Dividends [Abstract] Cash dividends per share (in dollars per share) Common Stock, Dividends, Per Share, Cash Paid Loans Receivable [Abstract] Loans Receivable [Abstract] Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Financing Receivable Information by Portfolio Segment [Axis] Financing Receivable Information by Portfolio Segment [Axis] Loans Receivable, Portfolio Segment, Name [Member] Loans Receivable, Portfolio Segment, Name [Member] Loans Receivable, Portfolio Segment, Name [Member] Residential Portfolio Segment [Member] Residential Portfolio Segment [Member] Construction, Speculative [Member] Construction, Speculative [Member] Construction, Speculative [Member] Construction, Custom [Member] Construction, Custom [Member] Construction, Custom [Member] Land, Acquisition and Development [Member] Land, Acquisition and Development [Member] Land, Acquisition and Development [Member] Land, Consumer Lot Loans [Member] Land, Consumer Lot Loans [Member] Land, Consumer Lot Loans [Member] Multi Family Housing [Member] Multi Family Housing [Member] Multi Family Housing [Member] Commercial Real Estate Portfolio Segment [Member] Commercial Real Estate Portfolio Segment [Member] Commercial and Industrial Loans [Member] Commercial and Industrial Loans [Member] Commercial and Industrial Loan [Member] Home Equity Line of Credit [Member] Home Equity Line of Credit [Member] Home Equity Line of Credit [Member] Consumer Portfolio Segment [Member] Consumer Portfolio Segment [Member] Accounts, Notes, Loans and Financing Receivable [Line Items] Accounts, Notes, Loans and Financing Receivable [Line Items] Number of Contracts (in contracts) Financing Receivable, Modifications, Number of Contracts During the Period Financing Receivable, Modifications, Number of Contracts During the Period Pre-Modification Outstanding Recorded Investment Financing Receivable, Modifications, Pre-Modification Recorded Investment During the Period Financing Receivable, Modifications, Pre-Modification Recorded Investment During the Period Post-Modification Outstanding Recorded Investment Financing Receivable, Modifications, Post-Modification Recorded Investment During the Period Financing Receivable, Modifications, Post-Modification Recorded Investment During the Period Loan Modification, Basis Point Reduction, Minimum Loan Modification, Basis Point Reduction, Minimum Loan Modification, Basis Point Reduction, Minimum Loan Modification, Basis Point Reduction, Maximum Loan Modification, Basis Point Reduction, Maximum Loan Modification, Basis Point Reduction, Maximum Single Family Residential Loans as Percentage of Restructured Loans Single Family Residential Loans as Percentage of Restructured Loans Single Family Residential Loans as Percentage of Restructured Loans Fair Value Measurements [Abstract] Fair Value Measurements [Abstract] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Table] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Table] Schedule of Available-for-sale Securities, Major Types of Debt and Equity Securities [Axis] Major Types of Debt and Equity Securities [Domain] Major Types of Debt and Equity Securities [Domain] Equity Securities [Member] Debt Securities [Member] Debt Securities [Member] US Treasury and Government [Member] US States and Political Subdivisions Debt Securities [Member] Foreign Government Debt Securities [Member] Corporate Debt Securities [Member] Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member] Other Debt Obligations [Member] Other Debt Obligations [Member] Fair Value by Measurement Frequency [Axis] Fair Value by Measurement Frequency [Axis] Fair Value, Measurement Frequency [Domain] Fair Value, Measurement Frequency [Domain] Fair Value, Measurements, Recurring [Member] Fair Value, Measurements, Recurring [Member] Fair Value, Measurements, Nonrecurring [Member] Fair Value, Measurements, Nonrecurring [Member] Fair Value, Hierarchy [Axis] Fair Value, Hierarchy [Axis] Fair Value, Measurements, Fair Value Hierarchy [Domain] Fair Value, Measurements, Fair Value Hierarchy [Domain] Estimate of Fair Value, Fair Value Disclosure [Member] Estimate of Fair Value, Fair Value Disclosure [Member] Fair Value, Inputs, Level 1 [Member] Fair Value, Inputs, Level 1 [Member] Fair Value, Inputs, Level 2 [Member] Fair Value, Inputs, Level 2 [Member] Fair Value, Inputs, Level 3 [Member] Fair Value, Inputs, Level 3 [Member] Fair Value, by Balance Sheet Grouping, Disclosure Item Amounts [Axis] Fair Value, by Balance Sheet Grouping, Disclosure Item Amounts [Axis] Fair Value, Disclosure Item Amounts [Domain] Fair Value, Disclosure Item Amounts [Domain] Carrying (Reported) Amount, Fair Value Disclosure [Member] Carrying (Reported) Amount, Fair Value Disclosure [Member] Portion at Fair Value, Fair Value Disclosure [Member] Portion at Fair Value, Fair Value Disclosure [Member] Change During Period, Fair Value Disclosure [Member] Change During Period, Fair Value Disclosure [Member] Assets Measured on NonRecurring Basis, by Type [Axis] Assets Measured on NonRecurring Basis, by Type [Axis] Assets Measured on Nonrecurring Basis, Name [Member] Assets Measured on Nonrecurring Basis, Name [Member] Impaired Loans [Member] Impaired Loans [Member] Covered Real Estate Owned [Member] Covered Real Estate Owned [Member] Covered Real Estate Owned [Member] Real Estate Held for Sale [Member] Real Estate Held for Sale [Member] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Term of Contractual Due Dates of Substantially All Mortgage-Backed Securities Term of Contractual Due Dates of Substantially All Mortgage-Backed Securities Term of Contractual Due Dates of Substantially All Mortgage-Backed Securities Available-for-sale Securities, Fair Value Disclosure Available-for-sale Securities, Fair Value Disclosure Assets, Fair Value Disclosure, Nonrecurring Assets, Fair Value Disclosure, Nonrecurring Loss Related to Impaired Loans and Real Estate Held for Sale, Measured on Nonrecurring Basis Loss Related to Impaired Loans and Real Estate Held for Sale, Measured on Nonrecurring Basis Fair value adjustments to collateral dependent loans and real estate held for sale are recorded to reflect write-downs of principal balances based on the current appraised or estimated value of the collateral. Business Acquisition [Axis] Business Acquisition [Axis] Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree [Domain] Non-Acquired Loans [Member] Non-Acquired Loans [Member] Non-Acquired Loans [Member] Acquired Loans [Member] Acquired Loans [Member] Acquired Loans [Member] Loans receivable, gross Loans and Leases Receivable, Gross, Carrying Amount Ratio of type of loan to total loans receivable Loans and Leases Receivable, Ratio of Loan Type to All Loans Loans and Leases Receivable, Ratio of Loan Type to All Loans Allowance for probable losses Financing Receivable, Allowance for Credit Losses Loans in process Loans and Leases Receivable, Loans in Process Discount on acquired loans Discount on Acquired Loans Discount on Acquired Loans Deferred net origination fees Loans and Leases Receivable, Deferred Income Charges against loans receivable Loans and Leases Receivable, Charges to Allowance, Loans in Process and Deferred Fees Loans and Leases Receivable, Charges to Allowance, Loans in Process and Deferred Fees Loans receivable, net Loans and Leases Receivable, Net Reported Amount Schedule of Available-for-sale and Held-to-maturity Securities [Table] Schedule of Available-for-sale and Held-to-maturity Securities [Table] Schedule of Available-for-sale and Held-to-maturity Securities [Table] Municipal Bonds [Member] Municipal Bonds [Member] Debt Security [Axis] Debt Security [Axis] Major Types of Debt Securities [Domain] Major Types of Debt Securities [Domain] Available-for-sale Securites and Held-to-maturity Securities [Line Items] Available-for-sale Securites and Held-to-maturity Securities [Line Items] Available-for-sale Securites and Held-to-maturity Securities [Line Items] Available-for-sale Securities, Debt Maturities, Amortized Cost Basis [Abstract] Available-for-sale Securities, Debt Maturities, within One Year, Amortized Cost Basis Available-for-sale Securities, Debt Maturities, within One Year, Amortized Cost Basis Available-for-sale Securities, Debt Maturities, after One Through Five Years, Amortized Cost Basis Available-for-sale Securities, Debt Maturities, after One Through Five Years, Amortized Cost Basis Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Amortized Cost Basis Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Amortized Cost Basis Available-for-sale Securities, Debt Maturities, after Ten Years, Amortized Cost Basis Available-for-sale Securities, Debt Maturities, after Ten Years, Amortized Cost Basis Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Amortized Cost Basis Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Amortized Cost Basis Available-for-sale Securities, Debt Maturities, Amortized Cost Basis Available-for-sale Securities, Debt Maturities, Amortized Cost Basis Available-for-sale Securities, Gross Realized Gain (Loss) [Abstract] Gross Unrealized Gains, Within One Year Gross Unrealized Gains, Within One Year Gross Unrealized Gains, Within One Year Gross Unrealized Gains After One Through Five Years Gross Unrealized Gains After One Through Five Years Gross Realized Gains After One Through Five Years Gross Unrealized Gains, Five Through Ten Years Gross Unrealized Gains, After Five Through Ten Years Gross Unrealized Gains, Five Through Ten Years Gross Unrealized Gains, After Ten Years Gross Unrealized Gains, After Ten Years Gross Unrealized Gains, After Ten Years Gross Unrealized Gains Without Single Maturity Gross Unrealized Gains Without Single Maturity Gross Unrealized Gains Without Single Maturity Available-for-sale Securities, Gross Unrealized Gains Available-for-sale Securities, Gross Unrealized Gains Gross Unrealized Losses, Within One Year Gross Unrealized Losses, Within One Year Gross Unrealized Losses, Within One Year Gross Unrealized Losses, After One Through Five Years Gross Unrealized Losses, AFter One Through Five Years Gross Unrealized Losses, AFter One Through Five Years Gross Unrealized Losses, After Five Years Through Ten Years Gross Unrealized Losses, After Five Years Through Ten Years Gross Unrealized Losses, After Five Years Through Ten Years Gross Unrealized Losses, Over Ten Years Gross Unrealized Losses, Over Ten Years Gross Unrealized Losses, Over Ten Years Gross Unrealized Losses Without Single Maturity Gross Unrealized Losses Without Single Maturity Gross Unrealized Losses Without Single Maturity Available-for-sale Securities, Gross Unrealized Losses Available-for-sale Securities, Gross Unrealized Losses Available-for-sale Securities, Debt Maturities, Fair Value [Abstract] Available-for-sale Securities, Debt Maturities, within One Year, Fair Value Available-for-sale Securities, Debt Maturities, within One Year, Fair Value Available-for-sale Securities, Debt Maturities, after One Through Five Years, Fair Value Available-for-sale Securities, Debt Maturities, after One Through Five Years, Fair Value Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Fair Value Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Fair Value Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Fair Value Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Fair Value Available-for-sale Securities, Debt Securities Available-for-sale Securities, Debt Securities Investment Yield [Abstract] Investment Yield [Abstract] Yield, Within One Year Yield, Within One Year Yield, Within One Year Yield, After One Through Five Years Yield, After One Through Five Years Yield, After One Through Five Years Yield, After Five Through Ten Years Yield, After Five Through Ten Years Yield, After Five Through Ten Years Yield, After Ten Years Yield, After Ten Years Yield, After Ten Years Yield, Without Single Maturity Yield, Without Single Maturity Yield, Without Single Maturity Available-for-sale Securities, Yield Available-for-sale Securities, Yield Available-for-sale Securities, Yield Held-to-maturity Securities, Yield Held-to-maturity Securities, Yield Held-to-maturity Securities, Yield Yield Yield Yield Held-to-maturity Securities, Debt Maturities, Net Carrying Amount [Abstract] Held-to-maturity Securities, Debt Maturities, within One Year, Net Carrying Amount Held-to-maturity Securities, Debt Maturities, within One Year, Net Carrying Amount Held-to-maturity Securities, Debt Maturities, after One Through Five Years, Net Carrying Amount Held-to-maturity Securities, Debt Maturities, after One Through Five Years, Net Carrying Amount Held-to-maturity Securities, Debt Maturities, after Five Through Ten Years, Net Carrying Amount Held-to-maturity Securities, Debt Maturities, after Five Through Ten Years, Net Carrying Amount Held-to-maturity Securities, Debt Maturities, after Ten Years, Net Carrying Amount Held-to-maturity Securities, Debt Maturities, after Ten Years, Net Carrying Amount Held-to-maturity Securities, Debt Maturities, without Single Maturity Date, Net Carrying Amount Held-to-maturity Securities, Debt Maturities, without Single Maturity Date, Net Carrying Amount Held-to-maturity Securities, Debt Maturities, Net Carrying Amount Held-to-maturity Securities, Debt Maturities, Net Carrying Amount Held to Maturity Securities, Gross Unrecognized Gains (Losses) [Abstract] Held to Maturity Securities, Gross Unrecognized Gains (Losses) [Abstract] Unrecognized Gains, After One Through Five Years Gross Unrecognized Holding Gains, After One Through Five Years Unrecognized Gains, After One Through Five Years Unrecognized Holding Gains, After Five Years Through Ten Years Gross Unrecognized Holding Gains, After Five Years Through Ten Years Unrecognized Holding Gains, After Five Years Through Ten Years Gross Unrecognized Gains, After Ten Years Gross Unrecognized Holding Gains, After Ten Years Gross Unrecognized Gains, After Ten Years Gross Unrecognized Gains Without Single Maturity Gross Unrecognized Gains Without Single Maturity Gross Unrecognized Gains Without Single Maturity Held-to-maturity Securities, Unrecognized Holding Gain Held-to-maturity Securities, Unrecognized Holding Gain Held to Maturity, Gross Unrecognized Losses [Abstract] Held to Maturity, Gross Unrecognized Losses [Abstract] Unrecognized Holding Losses, After One Year Through Five Years Gross Unrecognized Holding Losses, After One Year Through Five Years Gross Unrecognized Holding Losses, After One Year Through Five Years Unrecognized Holding Losses, After Five Through Ten Years Gross Unrecognized Holding Losses, After Five Through Ten Years Unrecognized Holding Losses, After Five Through Ten Years Gross Unrecognized Losses, After Ten Years Gross Unrecognized Holding Losses, After Ten Years Gross Unrecognized Losses, After Ten Years Gross Unrecognized Losses Without Single Maturity Gross Unrecognized Losses Without Single Maturity Gross Unrecognized Losses Without Single Maturity Held-to-maturity Securities, Unrecognized Holding Loss Held-to-maturity Securities, Unrecognized Holding Loss Held-to-maturity Securities, Debt Maturities, Fair Value [Abstract] Held-to-maturity Securities, Debt Maturities, within One Year, Fair Value Held-to-maturity Securities, Debt Maturities, within One Year, Fair Value Held-to-maturity Securities, Debt Maturities, after One Through Five Years, Fair Value Held-to-maturity Securities, Debt Maturities, after One Through Five Years, Fair Value Held-to-maturity Securities, Debt Maturities, after Five Through Ten Years, Fair Value Held-to-maturity Securities, Debt Maturities, after Five Through Ten Years, Fair Value Held-to-maturity Securities, Debt Maturities, after Ten Years, Fair Value Held-to-maturity Securities, Debt Maturities, after Ten Years, Fair Value Held-to-maturity Securities, Debt Maturities, without Single Maturity Date, Fair Value Held-to-maturity Securities, Debt Maturities, without Single Maturity Date, Fair Value Held-to-maturity Securities, Debt Maturities, Fair Value Held-to-maturity Securities, Debt Maturities, Fair Value Investments Investments Gross Unrealized Gains on Investments Gross Unrealized Gains on Investments Gross Unrealized Gains on Investments Gross Unrealized Losses on Investments Gross Unrealized Losses on Investments Gross Unrealized Losses on Investments Investments, Fair Value Disclosure Investments, Fair Value Disclosure Available-for-sale securities sold Proceeds from Sale of Available-for-sale Securities Business Combinations [Abstract] Schedule of Business Acquisitions, by Acquisition [Table] Schedule of Business Acquisitions, by Acquisition [Table] Business Acquisition, Purchase Price Allocation [Axis] Business Acquisition, Purchase Price Allocation [Axis] Business Acquisition, Purchase Price Allocation [Axis] Business Acquisition, Purchase Price Allocation [Domain] Business Acquisition, Purchase Price Allocation [Domain] Business Acquisition, Purchase Price Allocation [Domain] Received from FDIC [Member] Received from FDIC [Member] Received from FDIC [Member] Fair Value Adjustments [Member] Purchase Price Allocation Adjustments [Member] Business Acquisition [Line Items] Business Acquisition [Line Items] Assets: Business Acquisition, Purchase Price Allocation, Current Assets [Abstract] Cash and cash equivalents Business Acquisition, Purchase Price Allocation, Current Assets, Cash and Cash Equivalents Available for sale securities Business Acquisition, Purchase Price Allocation, Current Assets, Marketable Securities FHLB & FRB stock Business Acquisition, Purchase Price Allocation, FHLB and FRB Stock Business Acquisition, Purchase Price Allocation, Current Assets, FHLB and FRB Stock Loans receivable, net Business Acquisition, Purchase Price Allocation, Current Assets, Receivables Interest receivable Business Acquisition, Purchase Price Allocation, Business Acquisition, Purchase Price Allocation, Current Assets, Interest Receivable Business Acquisition, Purchase Price Allocation, Business Acquisition, Purchase Price Allocation, Current Assets, Interest Receivable Property and equipment, net Business Acquisition, Purchase Price Allocation, Property, Plant and Equipment Real estate held for sale Business Acquisition, Purchase Price Allocation, Current Assets, Asset Held-for-sale Other assets Business Acquisition, Purchase Price Allocation, Other Noncurrent Assets Total Assets Business Acquisition, Purchase Price Allocation, Assets Acquired Liabilities: Business Acquisition, Purchase Price Allocation, Current Liabilities [Abstract] Customer accounts Business Acquisition, Purchase Price Allocation, Customer Accounts Business Acquisition, Purchase Price Allocation, Customer Accounts FHLB advances Business Acquisition, Purchase Price Allocation, FHLB Advances Business Acquisition, Purchase Price Allocation, FHLB Advances Other liabilities Business Acquisition, Purchase Price Allocation, Other Noncurrent Liabilities Total Liabilities Business Acquisition, Purchase Price Allocation, Liabilities Assumed Net assets (liabilities) acquired Business Acquisition, Purchase Price Allocation, Assets Acquired (Liabilities Assumed), Net Aggregate fair value adjustments Business Acquisition, Purchase Price Allocation, Aggregate Fair Value Adjustmetns Business Acquisition, Purchase Price Allocation, Aggregate Fair Value Adjustmetns Cash received from the FDIC Cash Received From the FDIC Cash Received From the FDIC Covered Assets [Abstract] Covered Assets [Abstract] Schedule of Changes in Carrying Amount and Accretable Yield of Assets Schedule of Changes in Carrying Amount and Accretable Yield of Assets [Table Text Block] Schedule of Changes in Carrying Amount and Accretable Yield of Assets [Table Text Block] Schedule of Activity for FDIC Indemnification Asset Schedule of Activity for FDIC Indemnification Asset [Table Text Block] Schedule of Activity for FDIC Indemnification Asset [Table Text Block] Summary of Loans Based on Credit Quality Indicators Financing Receivable Credit Quality Indicators [Table Text Block] Analysis of Age of Purchased Non-Credit Impaired Loans In Past Due Status Analysis of Aging of Non-Credit Impaired Loans [Table Text Block] Analysis of Aging of Non-Credit Impaired Loans [Table Text Block] Consolidated Statements of Operations [Abstract] Consolidated Statements of Operations [Abstract] Statement [Table] Statement [Table] Statement, Scenario [Axis] Statement, Scenario [Axis] Scenario, Unspecified [Domain] Scenario, Unspecified [Domain] Statement [Line Items] Statement [Line Items] INTEREST INCOME Interest and Dividend Income, Operating [Abstract] Loans Interest and Fee Income, Loans and Leases Mortgage-backed securities Interest Income, Securities, Mortgage Backed Investment securities and cash equivalents Investment Income and Other Income derived from investments in debt and equity securities and on cash and cash equivalents. Interest income represents earnings which reflect the time value of money or transactions in which the payments are for the use or forbearance of money. Other income includes realized gains and losses and other items not otherwise defined due to materiality considerations. Investment Income, Interest and Dividend Investment Income, Interest and Dividend INTEREST EXPENSE Interest Expense [Abstract] Customer accounts Interest Expense, Deposits FHLB advances and other borrowings Interest Expense, Borrowings Interest Expense Interest Expense Net interest income Interest Income (Expense), Net Provision for loan losses Provision for Loan and Lease Losses Net interest income after provision for loan losses Interest Income (Expense), after Provision for Loan Loss OTHER INCOME Noninterest Income [Abstract] Gain on sale of investments Gain (Loss) on Sale of Securities, Net Other Noninterest Income, Other Operating Income Noninterest Income Noninterest Income OTHER EXPENSE Noninterest Expense [Abstract] Compensation and benefits Labor and Related Expense Occupancy Occupancy, Net FDIC insurance premiums Federal Deposit Insurance Corporation Premium Expense Other Other Noninterest Expense Noninterest Expense Noninterest Expense Gain (loss) on real estate acquired through foreclosure, net Gains (Losses) on Sales of Other Real Estate Income before income taxes Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest Income tax provision Income Tax Expense (Benefit) NET INCOME Net Income (Loss) Attributable to Parent PER SHARE DATA Earnings Per Share [Abstract] Basic earnings (in dollars per share) Earnings Per Share, Basic Diluted earnings (in dollars per share) Earnings Per Share, Diluted Basic weighted average number of shares outstanding (in shares) Weighted Average Number of Shares Outstanding, Basic Diluted weighted average number of shares outstanding, including dilutive stock options (in shares) Weighted Average Number of Shares Outstanding, Diluted Dividends Dividends [Text Block] Dividends [Text Block] Allowance for Losses on Loans [Abstract] Allowance for Losses on Loans [Abstract] Schedule of Financing Receivable, Recorded Investment, Credit Quality Indicator [Table] Schedule of Financing Receivable, Recorded Investment, Credit Quality Indicator [Table] Acquired Credit Impaired Loans [Member] Acquired Credit Impaired Loans [Member] Acquired Credit Impaired Loans [Member] Financing Receivable Information by Credit Quality Indicator [Axis] Financing Receivable Information by Credit Quality Indicator [Axis] Financing Receivable, by Credit Quality Indicator [Domain] Financing Receivable, by Credit Quality Indicator [Domain] Internally Assigned Grade [Member] Internally Assigned Grade [Member] Consumer Credit Score [Member] Consumer Credit Score [Member] Pass [Member] Pass [Member] Special Mention [Member] Special Mention [Member] Substandard [Member] Substandard [Member] Doubtful [Member] Doubtful [Member] Loss [Member] Loss [Member] Nonperforming Financing Receivable [Member] Nonperforming Financing Receivable [Member] Financing Receivable, Recorded Investment [Line Items] Financing Receivable, Recorded Investment [Line Items] Grade as percentage of total gross loans Grade as Percentage of Total Gross Loans Grade as Percentage of Total Gross Loans Statement of Income and Comprehensive Income [Abstract] Net unrealized loss on available-for-sale securities, tax Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Tax Summary of Significant Accounting Policies [Abstract] Summary of Significant Accounting Policies [Abstract] Fair Value, Off-balance Sheet Risks by Financial Instrument [Axis] Fair Value, Off-balance Sheet Risks, Financial Instruments [Domain] Fair Value, Off-balance Sheet Risks, Financial Instruments [Domain] Loans and Leases Receivable [Member] Loans and Leases Receivable [Member] Loans in process (excluding covered loans) Fair Value, by Balance Sheet Grouping [Table] Fair Value, by Balance Sheet Grouping [Table] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Cash and Cash Equivalents, Fair Value Disclosure Cash and Cash Equivalents, Fair Value Disclosure Held-to-maturity Securities, Fair Value Disclosure Held-to-maturity Securities, Fair Value Disclosure Loans Receivable, Fair Value Disclosure Loans Receivable, Fair Value Disclosure Covered loans, net Loans and Leases Receivable, Covered Loans Loans and Leases Receivable, Covered Loans, Gross FDIC indemnification asset FDIC Indemnification Asset, Fair Value Disclosure FDIC Indemnification Asset, Fair Value Disclosure FHLB stock Federal Home Loan Bank Stock Deposits, Fair Value Disclosure Deposits, Fair Value Disclosure Federal Home Loan Bank Advances, Long Term and Other Borrowings, Fair Value Disclosure Federal Home Loan Bank Advances, Long Term and Other Borrowings, Fair Value Disclosure Federal Home Loan Bank Advances, Long Term and Other Borrowings, Fair Value Disclosure Document and Entity Information [Abstract] Document and Entity Information [Abstract] Document Type Document Type Amendment Flag Amendment Flag Document Period End Date Document Period End Date Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Trading Symbol Trading Symbol Entity Registrant Name Entity Registrant Name Entity Central Index Key Entity Central Index Key Current Fiscal Year End Date Current Fiscal Year End Date Entity Filer Category Entity Filer Category Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Consolidated Statements of Cash Flows [Abstract] Consolidated Statements of Cash Flows [Abstract] CASH FLOWS FROM OPERATING ACTIVITIES Net Cash Provided by (Used in) Operating Activities [Abstract] Net income Adjustments to reconcile net income to net cash provided by operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Amortization (accretion) of fees, discounts, premiums and intangible assets, net Amortization Accretion of Fees Discounts Premiums and Intangible Assets Net The aggregate amount of recurring noncash expense charged against earnings in the period for net deferred loan fees, discounts/premiumns of investments and to allocate the cost of intangible assets over their estimated remaining economic lives. Cash received from FDIC under loss share Increase (Decrease) in FDIC Indemnification Asset Increase (Decrease) in FDIC Indemnification Asset Depreciation Depreciation, Nonproduction Stock option compensation expense Stock or Unit Option Plan Expense Loss (gain) on real estate held for sale, net (Gain) Loss on Sale of Investments in Securities and Other The net gain or loss on sale of investments in securities and other. Increase in accrued interest receivable Increase (Decrease) in Accrued Interest Receivable, Net Increase in FDIC loss share receivable Increase (Decrease) in FDIC Loss Share Receivable Increase (Decrease) in FDIC Loss Share Receivable Increase in income taxes payable Increase (Decrease) in Income Taxes Payable, Net of Income Taxes Receivable Decrease in other assets Increase (Decrease) in Other Operating Assets Increase (decrease) in accrued expenses and other liabilities Increase (Decrease) in Accrued Liabilities and Other Operating Liabilities Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities CASH FLOWS FROM INVESTING ACTIVITIES Net Cash Provided by (Used in) Investing Activities [Abstract] Net principal collections (loan originations) Loans Originated Net of Principal Collections Loans Originated Net of Principal Collections FHLB stock redemptions Payments for (Proceeds from) Federal Home Loan Bank Stock Available-for-sale securities purchased Payments to Acquire Available-for-sale Securities Principal payments and maturities of available-for-sale securities Proceeds from Maturities, Prepayments and Calls of Available-for-sale Securities Principal payments and maturities of held-to-maturity securities Proceeds from Maturities, Prepayments and Calls of Held-to-maturity Securities Net cash received from acquisition Cash Acquired from Acquisition Proceeds from sales of real estate held for sale Proceeds from Sale of Property Held-for-sale Proceeds from sales of covered REO Proceeds From Sales of Covered Real Estate Owned The cash inflow associated with the sale of covered real estate owned. Increase in intangible assets Payments to Acquire Intangible Assets Premises and equipment purchased Payments to Acquire Property, Plant, and Equipment Net cash provided (used) by investing activities Net Cash Provided by (Used in) Investing Activities CASH FLOWS FROM FINANCING ACTIVITIES Net Cash Provided by (Used in) Financing Activities [Abstract] Net decrease in customer accounts Increase (Decrease) in Deposits Net decrease in borrowings Proceeds from (Repayments of) Debt Proceeds from exercise of common stock options Proceeds from Stock Options Exercised Dividends paid on common stock Payments of Dividends, Common Stock Treasury stock purchased Payments for Repurchase of Common Stock Decrease in advance payments by borrowers for taxes and insurance Increase (Decrease)in Advance Payments by Borrowers for Taxes and Insurance Increase/ (decrease) in advances by borrowers for taxes and insurance Net cash used by financing activities Net Cash Provided by (Used in) Financing Activities Increase (decrease) in cash and cash equivalents Cash and Cash Equivalents, Period Increase (Decrease) Cash and cash equivalents at beginning of period Cash and Cash Equivalents, at Carrying Value Cash and cash equivalents at end of period SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION Supplemental Cash Flow Information [Abstract] Non-cash investing activities Non-Cash Investing Activities [Abstract] Non-Cash Investing Activities [Abstract] Non-covered real estate acquired through foreclosure Non Covered Real Estate Acquired Through Foreclosure The amount of non-covered real estate investments acquired through foreclosure during the period. Title through foreclosure occurs in a legal proceeding in which a secured creditor obtains title typically be bidding the amount of debt owed to it after the borrower has defaulted on the debt instrument. Covered real estate acquired through foreclosure Covered Real Estate Acquired Through Foreclosure The amount of covered real estate investments acquired through foreclosure during the period. Title through foreclosure occurs in a legal proceeding in which a secured creditor obtains title typically be bidding the amount of debt owed to it after the borrower has defaulted on the debt instrument. Cash paid during the period for Cash Paid During Period For [Abstract] Cash Paid During Period For [Abstract] Interest Interest Paid Income taxes Income Taxes Paid The following summarizes the non-cash activities related to acquisitions Other Noncash Investing and Financing Items [Abstract] Fair value of assets acquired Fair Value of Assets Acquired Fair value of liabilities assumed Liabilities Assumed Net fair value of liabilities assumed Net Fair Value of Assets (Liabilities) Net Fair Value of Assets (Liabilities) Unlikely to be Collected Financing Receivable [Member] Unlikely to be Collected Financing Receivable [Member] Performing Financing Receivable [Member] Performing Financing Receivable [Member] Nonaccrual loans by portfolio segment Loans and Leases Receivable, Impaired, Nonperforming, Nonaccrual of Interest Grade as a percetage of total gross loans Loans and Leases Receivable, Ratio of Nonperforming Loans to All Loans Balance Sheet Location [Axis] Balance Sheet Location [Axis] Balance Sheet Location [Axis] Balance Sheet Location, Name [Domain] Balance Sheet Location, Name [Domain] Balance Sheet Location, Name [Domain] Real Estate Held for Sale [Member] Other Assets [Member] Other Assets [Member] Western National Bank [Member] Western National Bank [Member] Western National Bank [Member] South Valley Bank [Member] South Valley Bank [Member] South Valley Bank [Member] Acquisition from FDIC, deposits assumed Acquisition from FDIC, Deposits Assumed Acquisition from FDIC, Deposits Assumed Number of branches acquired (in branches) Number of Branches Acquired Number of Branches Acquired Assets acquired Loans acquired Business Acquisition, Purchase Price Allocation, Loans Acquired Business Acquisition, Purchase Price Allocation, Loans Acquired Foreclosed real estate acquired Business Acquisition, Purchase Price Allocation, Foreclosed Real Estate Acquired Business Acquisition, Purchase Price Allocation, Foreclosed Real Estate Acquired Liabilities assumed Deposits acquired Business Acquisition, Purchase Price Allocation, Deposits Acquired Business Acquisition, Purchase Price Allocation, Deposits Acquired Increase (decrease) in assets, fair value adjustments Business Acquisition, Increase (Decrease) in Assets, Fair Value Adjustments Business Acquisition, Increase (Decrease) in Assets, Fair Value Adjustments Number of shares of common stock for each share of acquireee's common stock (in shares) Number of Shares of Company Common Stock Converted for One Share of Acquiree's Common Stock Number of Shares of Company Common Stock Converted for One Share of Acquiree's Common Stock Common stock consideration from Washington Federal Business Acquisition, Cost of Acquired Entity, Equity Interests Issued and Issuable Maximum contingent cash earn-out payments Business Acquisition, Contingent Consideration, Potential Cash Payment Assumed price of common stock Assumed Price of Common Stock Assumed Price of Common Stock Number of total offices after merger Number of Offices Number of Offices Number of states in which entity operates after merger (in states) Number of States in which Entity Operates Total assets after merger Assets Total deposits after merger Deposits Percent of common stock holders voting in favor of merger Percent of Common Stock Holders Voting In Favor of Merger Percent of Common Stock Holders Voting In Favor of Merger Covered Assets, Status of Loans Acquired in Transfer [Axis] Covered Assets, Status of Loans Acquired in Transfer [Axis] Loan Status, Designation [Member] Loan Type [Member] Acquired Impaired Assets [Member] Acquired Impaired Assets [Member] Acquired Non Impaired Assets [Member] Acquired Non Impaired Assets [Member] Covered assets Covered Assets Covered assets include loans and real estate held for sale participating in loss share with the FDIC. Loans and Leases Receivable, Covered Loans, Gross Loans and Leases Receivable, Covered Loans, Gross Loans and Leases Receivable, Covered Loans, Gross Discount balance related to acquired loans Receivable with Imputed Interest, Discount Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward] Balance at beginning of period, AccretableYield Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Balance at beginning of period, Carrying Amount of Loans Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Carrying Amount, Net Reclassification from nonaccretable balance, net, AccretableYield Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Reclassifications from Nonaccretable Difference Reclassification from nonaccretable balance, net, Carrying Amount of Loans Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Additons Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Additons Accretion, AccretableYield Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Accretion Transfers to REO, AccretableYield Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Transfers to Real Estate Owned Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Transfers to Real Estate Owned Transfers to REO, Carrying Amount of Loans Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Transfers to Real Estate Owned Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Transfers to Real Estate Owned Payments received, net, AccretableYield Certain Loans Acquired in Transfer not Accounted for as Debt Securities Accretable Yield, Payments Certain Loans Acquired in Transfer not Accounted for as Debt Securities Accretable Yield, Payments Payments received, net, Carrying Amount of Loans Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Payments Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Payments Balance at end of period, AccretableYield Balance at end of period, Carrying Amount of Loans FDIC Indemnification Asset Movement Analysis [Roll Forward] FDIC Indemnification Asset Movement Analysis [Roll Forward] Balance at beginning of period FDIC Loss Share Receivable The net present value of the amount expected to be received from the FDIC in connection with loss share agreements. Additions Additions to FDIC Indemnification Asset FDIC Indemnification Asset, Additions Payments made (received) FDIC Indemnification Asset, Payments FDIC Indemnification Asset, Payments Amortization FDIC Indemnification Asset, Amortization FDIC Indemnification Asset, Amortization Accretion, Carrying Amount of Loans FDIC Indemnification Asset, Discount Accretion FDIC Indemnification Asset, Discount Accretion Balance at end of period Single Family Residential [Member] Single Family Residential [Member] Accounts, Notes, Loans and Financing Receivable by Industry of Counterparty, Type [Axis] Accounts, Notes, Loans and Financing Receivable by Industry of Counterparty, Type [Axis] Industry of Counterparty [Domain] Industry of Counterparty [Domain] Credit Card Intermediary [Member] Credit Card Intermediary [Member] Accounts, Notes, Loans and Financing Receivable by Legal Entity of Counterparty, Type [Axis] Accounts, Notes, Loans and Financing Receivable by Legal Entity of Counterparty, Type [Axis] Legal Entity Type of Counterparty [Domain] Legal Entity Type of Counterparty [Domain] Government [Member] Government [Member] Individual [Member] Individual [Member] Health Care Patient [Member] Health Care Patient [Member] Corporation [Member] Corporation [Member] Partnership [Member] Partnership [Member] Accounts, Notes, Loans and Financing Receivable by Product and Service, Type [Axis] Accounts, Notes, Loans and Financing Receivable by Product and Service, Type [Axis] Products and Services [Domain] Products and Services [Domain] Statement, Business Segments [Axis] Statement, Business Segments [Axis] Segment [Domain] Segment [Domain] Business Intersegment, Eliminations [Member] Business Intersegment, Eliminations [Member] Accounts, Notes, Loans and Financing Receivable by Billing Status, Type [Axis] Accounts, Notes, Loans and Financing Receivable by Billing Status, Type [Axis] Receivables Billing Status [Domain] Receivables Billing Status [Domain] Unbilled Revenues [Member] Unbilled Revenues [Member] Billed Revenues [Member] Billed Revenues [Member] Accounts, Notes, Loans and Financing Receivable by Receivable Type [Axis] Accounts, Notes, Loans and Financing Receivable by Receivable Type [Axis] Receivable Type [Domain] Receivable Type [Domain] Trade Accounts Receivable [Member] Trade Accounts Receivable [Member] Notes Receivable [Member] Notes Receivable [Member] Loans Receivable [Member] Loans Receivable [Member] Financing Receivable [Member] Financing Receivable [Member] Mortgage Receivable [Member] Mortgage Receivable [Member] Credit Card Receivable [Member] Credit Card Receivable [Member] Accrued Income Receivable [Member] Accrued Income Receivable [Member] Outstanding principal balance of acquired loans Loans and Leases Receivable, Covered Loans, Current Loans and Leases Receivable, Covered Loans, Current Loans and Leases Receivable, Covered Loans, Current Loans and Leases Receivable, Covered Loans, 30 Days Loans and Leases Receivable, Covered Loans, 30 Days Loans and Leases Receivable, Covered Loans, 30 Days Loans and Leases Receivable, Covered Loans, 60 Days Loans and Leases Receivable, Covered Loans, 60 Days Loans and Leases Receivable, Covered Loans, 60 Days Loans and Leases Receivable, Covered Assets, 90 Days Loans and Leases Receivable, Covered Assets, 90 Days Loans and Leases Receivable, Covered Assets, 90 Days Loans and Leases Receivable, Covered Assets, Past Due Loans and Leases Receivable, Covered Assets, Past Due Loans and Leases Receivable, Covered Assets, Past Due Loans and Leases Receivable, Covered Loans, Ratio of Total Past Due Loans to Total Loans Receivable, Net of Charge Offs and Loans in Process Loans and Leases Receivable, Covered Loans, Ratio of Total Past Due Loans to Total Loans Receivable, Net of Charge Offs and Loans in Process Loans and Leases Receivable, Covered Loans, Ratio of Total Past Due Loans to Total Loans Receivable, Net of Charge Offs and Loans in Process Fair Value of Assets Measured on Recurring Basis Fair Value, Assets Measured on Recurring Basis [Table Text Block] Aggregated Balance of Assets Measured at Estimated Fair Value on a Nonrecurring Basis and Total Losses Resulting from Those Fair Value Adjustments Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Table Text Block] Fair Value of Financial Instruments by Balance Sheet Grouping Fair Value, by Balance Sheet Grouping [Table Text Block] Reconciliation of Amortized Cost to Fair Value of Available-for-Sale and Held-to-Maturity Securities Reconciliation of Amortized Cost to Fair Value, Available-for-sale Securities and Held-to-maturity Securities [Table Text Block] Reconciliation of Amortized Cost to Fair Value, Available-for-sale Securities and Held-to-maturity Securities [Table Text Block] Schedule of Unrealized Losses and Fair Value of Securities Schedule of Unrealized Loss on Investments [Table Text Block] Other comprehensive income (loss) net of tax: Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract] Net unrealized gain (loss) on available-for-sale securities, net of quarter-to-date tax of $1,422 and $14,154, and year-to-date tax of $13,394 and $4,498, respectively Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Net of Tax Reclassification adjustment of net gain from sale of available-for-sale securities included in net income Other Comprehensive Income (Loss), Reclassification Adjustment for Sale of Securities Included in Net Income, Net of Tax Other comprehensive income (loss) Other Comprehensive Income (Loss), Net of Tax Comprehensive income Comprehensive Income (Loss), Net of Tax, Attributable to Parent Fair Value Measurements Fair Value Disclosures [Text Block] Schedule of Financing Receivable, Allowance for Credit Losses [Table] Schedule of Financing Receivable, Allowance for Credit Losses [Table] Evaluation for Impairment of Loans Receivable and Allowance for Loans Receivable [Axis] Evaluation for Impairment of Loans Receivable and Allowance for Loans Receivable [Axis] Loans Receivable and Allowance for Loans Receivable, Impairment, Type [Member] Loans Receivable and Allowance for Loans Receivable, Impairment, Type [Member] Loans Receivable and Allowance for Loans Receivable, Impairment, Type [Member] Loans Collectively Evaluated for Impairment [Member] Loans Collectively Evaluated for Impairment [Member] Loans Individually Evaluated for Impairment [Member] Loans Individually Evaluated for Impairment [Member] Construction, Speculative and Land, Acquisition and Development [Member] Construction, Speculative and Land, Acquisition and Development [Member] Financing Receivable, Allowance for Credit Losses [Line Items] Financing Receivable, Allowance for Credit Losses [Line Items] Financing Receivable, Allowance for Credit Losses [Roll Forward] Financing Receivable, Allowance for Credit Losses [Roll Forward] Beginning Allowance Charge-offs Financing Receivable, Allowance for Credit Losses, Charge-offs Recoveries Financing Receivable, Allowance for Credit Losses, Recoveries Provisions & Transfers Financing Receivable, Allowance for Credit Losses, Provisions Ending Allowance Allowance as a percentage of outstanding loans and leases Allowance as a Percentage of Outstanding Loans and Leases Allowance as a Percentage of Outstanding Loans and Leases Percentage increase (decrease) in nonperforming assets Percentage Increase (Decrease) in Nonperforming Assets Percentage Increase (Decrease) in Nonperforming Assets Allowance for credit losses, charge-offs, net of recoveries Financing Receivable, Allowance for Credit Losses, Charge-offs, Net of Recoveries Reduction to the allowance for credit losses related to financing receivables deemed uncollectible, net of recoveries Percentage increase (decrease) in loans over 30 days delinquent Percentage Loans Over 30 Days Delinquent Percentage Increase (Decrease) Loans Over 30 Days Delinquent Ratio of past due loans to total loans, net of charge-offs and LIPs Loans and Leases Receivable, Ratio of Total Past Due Loans to Total Loans Receivable, Net of Charge Offs and Loans in Process Loans and Leases Receivable, Ratio of Total Past Due Loans to Total Loans Receivable, Net of Charge Offs and Loans in Process Acquisitions Business Combination Disclosure [Text Block] Allowance for Losses on Loans Allowance for Credit Losses [Text Block] Loans Receivable Finance, Loans and Leases Receivable, Policy [Policy Text Block] Off-Balance-Sheet Credit Exposures Off-Balance-Sheet Credit Exposure, Policy [Policy Text Block] Schedule of Impaired Financing Receivable [Table] Schedule of Impaired Financing Receivable [Table] Impaired Financing Receivable with No Related Allowance [Axis] Impaired Financing Receivable with No Related Allowance [Axis] Impaired Financing Receivable with No Related Allowance [Domain] Impaired Financing Receivable with No Related Allowance [Domain] Financing Receivable, Impairment, No Related Allowance [Member] Financing Receivable, Impairment, No Related Allowance [Member] Impaired Financing Receivable with Related Allowance [Axis] Impaired Financing Receivable with Related Allowance [Domain] Impaired Financing Receivable with Related Allowance [Domain] Financing Receivable, Impairment, Allowance Recorded [Member] Financing Receivable, Impairment, Allowance Recorded [Member] Financing Receivable, Impaired [Line Items] Financing Receivable, Impaired [Line Items] Recorded Investment Impaired Financing Receivable, Recorded Investment Unpaid Principal Balance Impaired Financing Receivable, Unpaid Principal Balance Related Allowance Impaired Financing Receivable, Related Allowance Average Recorded Investment Impaired Financing Receivable, Average Recorded Investment Amount of related allowance included in specific reserves Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment Amount of related allowance included in general reserves Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment Excludes Acquired and Covered Loans [Member] Excludes Acquired and Covered Loans [Member] Excludes Acquired and Covered Loans [Member] Summary of Activity in Allowance for Loan Losses Allowance for Credit Losses on Financing Receivables [Table Text Block] Summary of Loans Collectively and Individually Evaluated for Impairment and Related Allocation of Reserves Schedule of Loans Collectively and Individually Evaluated for Impairment [Table Text Block] Schedule of Loans Collectively and Individually Evaluated for Impairment [Table Text Block] Sumary of Impaired Loans Based on Type Impaired Financing Receivables [Table Text Block] Loans Receivable (excluding Covered Loans) Loans, Notes, Trade and Other Receivables Disclosure [Text Block] Schedule of Available-for-sale Securities [Table] Schedule of Available-for-sale Securities [Table] Corporate Bond Securities [Member] Corporate Bond Securities [Member] US Government Agencies Debt Securities [Member] Agency Securities [Member] Agency Securities [Member] Schedule of Available-for-sale Securities [Line Items] Schedule of Available-for-sale Securities [Line Items] Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value Financial Condition Parentheticals [Abstract] Financial Condition Parentheticals [Abstract] Available-for-sales securities, encumbered securities Available-for-sale Securities, Restricted Held-to-maturity securities, encumbered securities Held-to-maturity Securities, Restricted Common stock, par value Common Stock, Par or Stated Value Per Share Common stock, shares authorized (in shares) Common Stock, Shares Authorized Common stock, shares issued (in shares) Common Stock, Shares, Issued Common stock, shares outstanding (in shares) Common Stock, Shares, Outstanding Treasury stock, shares (in shares) Treasury Stock, Shares Consolidated Statements of Financial Condition [Abstract] Consolidated Statements of Financial Condition [Abstract] ASSETS Assets [Abstract] Cash and cash equivalents Available-for-sale securities, including encumbered securities of $964,338 and $965,927, at fair value Available-for-sale Securities Held-to-maturity securities, including encumbered securities of $34,433 and $45,086, at amortized cost Held-to-maturity Securities Loans receivable, net Covered loans, net Loans and Leases Receivable, Covered Loans, Net Reported Amount Loans and Leases Receivable, Covered Loans, Net Reported Amount Interest receivable Accrued Investment Income Receivable Premises and equipment, net Property, Plant and Equipment, Net Real estate held for sale Real Estate Held-for-sale Covered real estate held for sale Real Estate Held for Sale, Covered Real Estate Held for Sale Carrying amount as of the balance sheet date of covered investments in land and buildings held for sale, excluding real estate considered to be inventory of the entity. FDIC indemnification asset Intangible assets, net Goodwill and Intangible Assets, Net Sum of the carrying amounts of all goodwill and intangible assets of the balance sheet date, net of accumulated amortization and impairment charges. Federal and state income taxes Income Taxes Receivable Other assets Other Assets Assets LIABILITIES AND STOCKHOLDERS’ EQUITY Liabilities and Equity [Abstract] Liabilities Liabilities [Abstract] Customer accounts Deposits [Abstract] Transaction deposit accounts Transaction Deposits Transaction Deposits Time deposit accounts Time Deposits Savings and Demand Accounts and Repurchase Agreements with Customers Savings and Demand Accounts and Repurchase Agreements with Customers Savings and Demand Accounts and Repurchase Agreements with Customers FHLB advances Long-term Federal Home Loan Bank Advances Other borrowings Other Borrowings Advance payments by borrowers for taxes and insurance Advance Payments by Borrowers for Taxes and Insurance Federal and State income taxes Taxes Payable Accrued expenses and other liabilities Accounts Payable and Other Accrued Liabilities Liabilities Liabilities Stockholders’ equity Stockholders' Equity Attributable to Parent [Abstract] Common stock, $1.00 par value, 300,000,000 shares authorized;129,936,563 and 129,853,534 shares issued; 106,884,239 and 108,976,410 shares outstanding Common Stock, Value, Issued Paid-in capital Additional Paid in Capital, Common Stock Accumulated other comprehensive income, net of taxes Accumulated Other Comprehensive Income (Loss), Net of Tax Treasury stock, at cost; 23,052,324 and 20,877,124 shares Treasury Stock, Value Retained earnings Retained Earnings (Accumulated Deficit) Stockholders' Equity Attributable to Parent Stockholders' Equity Attributable to Parent Liabilities and Equity Liabilities and Equity Schedule of Financing Receivable, Troubled Debt Restructurings [Table] Schedule of Financing Receivable, Troubled Debt Restructurings [Table] Financing Receivable, Modifications [Line Items] Financing Receivable, Modifications [Line Items] Number of Contracts (in contracts) Financing Receivable, Modifications, Number of Contracts that Subsequently Defaulted Financing Receivable, Modifications, Number of Contracts that Subsequently Defaulted Recorded Investment Financing Receivable, Modifications, Recorded Investment During the Period Financing Receivable, Modifications, Recorded Investment During the Period Summary of Significant Accounting Policies Significant Accounting Policies [Text Block] Credit Impaired Acquired Loans [Member] Credit Impaired Acquired Loans [Member] Credit Impaired Acquired Loans [Member] Additions, AccretableYield Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Additions Additions, Carrying Amount of Loans Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Carrying Amount of Loans, Additions Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Carrying Amount of Loans, Additions Loans Receivable (excluding Covered Loans) [Abstract] Loans Receivable (excluding Covered Loans) [Abstract] Amount of Loan, Net of Charge-Offs and LIP Loans Receivable, Net of Charge Offs and Loans in Proces Loans Receivable, Net of Charge Offs and Loans in Proces Current Loans and Leases Receivable, Current Status Loans and Leases Receivable, Current Status 30 Days Loans and Leases Receivable, 1 to 30 Days Past Due Loans and Leases Receivable, 1 to 30 Days Past Due 60 Days Loans and Leases Receivable, 31 to 60 Days Past Due Loans and Leases Receivable, 31 to 60 Days Past Due 90 Days Loans and Leases Receivable, 61 to 90 Days Past Due Loans and Leases Receivable, 61 to 90 Days Past Due Total Loans and Leases Receivable, Past Due Loans and Leases Receivable, Past Due Schedule of Net Liabilities Acquired Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block] Covered Assets Assets Covered By FDIC Loss Share Disclosure [Text Block] Assets Covered By FDIC Loss Share Disclosure [Text Block] Schedule of Loans Receivable (excluding Covered Loans) Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] Schedule of Changes in the Accretable Yield for Credit Impaired Acquired Loans Schedule of Changes in the Accretable Yield for Credit Impaired Acquired Loans [Table Text Block] Schedule of Changes in the Accretable Yield for Credit Impaired Acquired Loans [Table Text Block] Summary of Information Regarding Non-Accrual Loans Schedule of Financing Receivables, Non Accrual Status [Table Text Block] Analysis of Age of Loans in Past Due Status Past Due Financing Receivables [Table Text Block] Schedule of Impaired Loans, Loan Commitments and Loans Serviced Schedule of Impaired Loans, Loan Commitments and Loans Serviced [Table Text Block] Schedule of Impaired Loans, Loan Commitments and Loans Serviced [Table Text Block] Schedule of Loan Modifications Troubled Debt Restructurings on Financing Receivables [Table Text Block] Covered Assets by Internally Assigned Grade Based on Loan Status Designation [Table] Covered Assets by Internally Assigned Grade Based on Loan Status Designation [Table] Covered Assets by Internally Assigned Grade Based on Loan Status Designation [Table] Home Equity Line of Credit and Other Consumer Loans [Member] Home Equity Line of Credit and Other Consumer Loans [Member] Covered Assets, Loan Status Designation [Line Items] Covered Assets, Loan Status Designation [Line Items] Covered loans, allowance for losses Covered Loans, Allowance for Losses Covered Loans, Allowance for Losses Loans and Leases Receivable, Covered Loans, Net Reported Amount New Accounting Pronouncements [Abstract] New Accounting Pronouncements [Abstract] New Accounting Pronouncements Description of New Accounting Pronouncements Not yet Adopted [Text Block] Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status Loans and Leases Receivable, Ratio of Type of Nonperforming Loans to All Nonperforming Loans Loans and Leases Receivable, Ratio of Type of Nonperforming Loans to All Nonperforming Loans