Receivables [Abstract] Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Financing Receivables, Period Past Due [Axis] Financing Receivables, Period Past Due [Axis] Financing Receivables, Period Past Due [Domain] Financing Receivables, Period Past Due [Domain] 30-89 Days Past Due Financing Receivables, 30 to 89 Days Past Due [Member] Financing Receivables, 30 to 89 Days Past Due [Member] Receivables Acquired with Deteriorated Credit Quality [Axis] Receivables Acquired with Deteriorated Credit Quality [Axis] Receivables Acquired with Deteriorated Credit Quality [Domain] Receivables Acquired with Deteriorated Credit Quality [Domain] Purchased Credit- Impaired Receivables Acquired with Deteriorated Credit Quality [Member] Schedule of Receivables with Imputed Interest, Name of Receivable with Imputed Interest [Axis] Schedule of Receivables with Imputed Interest, Name of Receivable with Imputed Interest [Axis] Name of Receivable with Imputed Interest [Domain] Name of Receivable with Imputed Interest [Domain] Non-Covered Non Covered Loans [Member] Non covered loans. Covered Covered Loans [Member] Covered loans. Class of Financing Receivable [Axis] Class of Financing Receivable, Type [Axis] Class of Financing Receivable [Domain] Class of Financing Receivable, Type [Domain] Non-purchased credit impaired loans Non Purchased Credit Impaired Loans Acquired [Member] Non purchased credit impaired loans. Financial Instrument [Axis] Financial Instrument [Axis] Financial Instruments [Domain] Financial Instruments [Domain] Total commercial real estate Commercial Real Estate [Member] Total commercial Commercial Loan [Member] Total consumer Consumer Loan [Member] Other Other Loan [Member] Other loan. Receivable Type [Axis] Receivable Type [Axis] Receivable [Domain] Receivable [Domain] Non-owner occupied commercial real estate Nonowner Occupied Commercial Real Estate [Member] Non owner occupied commercial real estate. Other commercial construction and land Other Commercial Construction And Land [Member] Other commercial construction and land. Multifamily commercial real estate Multifamily Commercial Real Estate [Member] Multifamily commercial real estate. 1-4 family residential construction and land One To Four Family Residential Construction And Land [Member] One to four family residential construction and land. Owner occupied commercial real estate Owner Occupied Commercial Real Estate [Member] Owner occupied commercial real estate. Commercial and industrial loans Commercial And Industrial [Member] Commercial and industrial loans. Lease financing Lease Financing [Member] Lease Financing [Member] 1-4 family residential One To Four Family Residential [Member] One to four family residential. Home equity loans Home Equity Line of Credit [Member] Other consumer loans Other Consumer [Member] Other Consumer [Member] Accounts, Notes, Loans and Financing Receivable [Line Items] Accounts, Notes, Loans and Financing Receivable [Line Items] 30-89 Days Past Due Financing Receivable, Recorded Investment, Past Due Greater than 90 Days Past Due and Still Accruing/Accreting Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing Non-accrual Financing Receivable, Recorded Investment, Nonaccrual Status Total Loans and Leases Receivable, Gross, Covered and Not Covered Including Held for Sale, Excluding Current Loans and Leases Receivable, Gross, Covered and Not Covered Including Held for Sale, Excluding Current Investments, Debt and Equity Securities [Abstract] Investment Securities Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block] Disclosure of Compensation Related Costs, Share-based Payments [Abstract] Stock-Based Compensation Disclosure of Compensation Related Costs, Share-based Payments [Text Block] Debt Disclosure [Abstract] Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Variable Rate [Axis] Variable Rate [Axis] Variable Rate [Domain] Variable Rate [Domain] Fixed Rate Long Term Borrowings Fixed Interest Rate [Member] Long term borrowings fixed interest rate. Floating Rate Long Term Borrowings Floating Interest Rate [Member] Long term borrowings floating interest rate. Debt Instrument [Line Items] Debt Instrument [Line Items] Due in 2016 Long-term Debt, Maturities, Repayments of Principal, Remainder of Fiscal Year Due in 2017 Long-term Debt, Maturities, Repayments of Principal in Year Two Due in 2018 Long-term Debt, Maturities, Repayments of Principal in Year Three Due in 2019 Long-term Debt, Maturities, Repayments of Principal in Year Four Due in 2020 Long-term Debt, Maturities, Repayments of Principal in Year Five Thereafter Long-term Debt, Maturities, Repayments of Principal after Year Five Total Long-term Debt Schedule of Available-for-sale Securities [Table] Schedule of Available-for-sale Securities [Table] Major Types of Debt and Equity Securities [Axis] Major Types of Debt and Equity Securities [Axis] Major Types of Debt and Equity Securities [Domain] Major Types of Debt and Equity Securities [Domain] Corporate bonds Corporate Bond Securities [Member] Mortgage-backed securities—residential issued by government sponsored entities Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member] Schedule of Available-for-sale Securities [Line Items] Schedule of Available-for-sale Securities [Line Items] Estimated Fair Value Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract] Estimated Fair Value, Less than 12 Months, Available-for-sale Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value Estimated Fair Value, 12 Months or Longer, Available-for-sale Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value Total, Estimated Fair Value, Available-for-sale Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value Unrealized Losses Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss [Abstract] Unrealized Losses, Less than 12 Months, Available-for-sale Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss Unrealized Losses,12 Months or Longer, Available-for-sale Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss Total, Unrealized Losses, Available-for-sale Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss Schedule of Held-to-maturity Securities [Table] Schedule of Held-to-maturity Securities [Table] Debt Security [Axis] Debt Security [Axis] Major Types of Debt Securities [Domain] Major Types of Debt Securities [Domain] U.S. Government agencies US Treasury and Government [Member] Schedule of Held-to-maturity Securities [Line Items] Schedule of Held-to-maturity Securities [Line Items] Estimated Fair Value Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value [Abstract] Estimated Fair Value, Less than 12 Months, Held-to-maturity Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value Estimated Fair Value, 12 Months or Longer, Held-to-maturity Held-to-maturity Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value Total, Estimated Fair Value, Held-to-maturity Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value Held-to-maturity Securities, Continuous Unrealized Loss Position, Accumulated Loss Held-to-maturity Securities, Continuous Unrealized Loss Position, Accumulated Loss Unrealized Losses Held-to-maturity Securities, Continuous Unrealized Loss Position, Accumulated Loss [Abstract] Unrealized Losses, Less than 12 Months, Held-to-maturity Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss Unrealized Losses, 12 Months or Longer, Held-to-maturity Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss Derivative Instruments and Hedging Activities Disclosure [Abstract] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Hedging Designation [Axis] Hedging Designation [Axis] Hedging Designation [Domain] Hedging Designation [Domain] Derivatives designated as hedging instruments Designated as Hedging Instrument [Member] Derivatives not designated as hedging instruments Not Designated as Hedging Instrument [Member] Derivative Instrument [Axis] Derivative Instrument [Axis] Derivative Contract [Domain] Derivative Contract [Domain] Interest rate swap Interest Rate Swap [Member] Forward loan sales contracts Forward Contracts [Member] Balance Sheet Location [Axis] Balance Sheet Location [Axis] Balance Sheet Location [Domain] Balance Sheet Location [Domain] Other assets Other Assets [Member] Other liabilities Other Liabilities [Member] Derivatives, Fair Value [Line Items] Derivatives, Fair Value [Line Items] Asset Derivatives, Number of Instruments Held Derivative Asset, Number of Instruments Held Gross asset value of derivatives Derivative Asset, Fair Value, Gross Asset Asset Derivatives, Notional Amount Derivative Asset, Notional Amount Liability Derivatives, Number of Instruments Held Derivative Liability, Number of Instruments Held Liability Derivatives, Fair Value Derivative Liability, Fair Value, Gross Liability Liability Derivatives, Notional Amount Derivative Liability, Notional Amount Statement [Table] Statement [Table] Hedging Relationship [Axis] Hedging Relationship [Axis] Hedging Relationship [Domain] Hedging Relationship [Domain] Cash Flow Hedging Cash Flow Hedging [Member] Interest Rate Swap Income Statement Location [Axis] Income Statement Location [Axis] Income Statement Location [Domain] Income Statement Location [Domain] Non Interest Income Non Interest Income [Member] Non interest income. Non Interest Expenses Non Interest Expenses [Member] Non interest expenses. Derivative Instruments and Hedging Activities Disclosures [Line Items] Derivative Instruments and Hedging Activities Disclosures [Line Items] Estimated gain to be reclassified to interest income in the next twelve months Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months Discontinued cash flow hedges Number of Discontinued Cash Flow Hedges Number of Discontinued Cash Flow Hedges Gain (loss) reclassified into earnings due to discontinuance Gain (Loss) on Discontinuation of Cash Flow Hedge Due to Forecasted Transaction Probable of Not Occurring, Net Gain (loss) on derivative Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net Derivatives in a net liability position Accounting Policies [Abstract] Basis of Presentation Basis of Presentation and Significant Accounting Policies [Text Block] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Award Type [Axis] Award Type [Axis] Equity Award [Domain] Equity Award [Domain] Stock options Employee Stock Option [Member] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Shares Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] Beginning balance (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number Granted (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross Exercised (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Canceled, expired or forfeited (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period Ending balance (in shares) Weighted Average Exercise Price Per Share Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] Beginning balance (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price Granted (in dollars per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price Exercised (in dollars per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Canceled, expired or forfeited (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period, Weighted Average Exercise Price Ending balance (in dollars per share) Statement of Financial Position [Abstract] Class of Stock [Axis] Class of Stock [Axis] Class of Stock [Domain] Class of Stock [Domain] Common Class A Common Class A [Member] Common Class B Common Class B [Member] Statement [Line Items] Statement [Line Items] Amortized cost of investment securities available-for-sale Available-for-sale Securities, Amortized Cost Basis Fair value of investment securities held-to-maturity Held-to-maturity Securities, Fair Value Preferred stock, par value (in dollars per share) Preferred Stock, Par or Stated Value Per Share Preferred stock, shares authorized Preferred Stock, Shares Authorized Preferred stock, shares issued Preferred Stock, Shares Issued Common stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Common stock, shares authorized Common Stock, Shares Authorized Common stock, shares issued Common Stock, Shares, Issued Common stock, shares outstanding Common Stock, Shares, Outstanding Treasury stock, shares Treasury Stock, Shares Fair Value Disclosures [Abstract] Fair Value, by Balance Sheet Grouping [Table] Fair Value, by Balance Sheet Grouping [Table] Measurement Basis [Axis] Measurement Basis [Axis] Fair Value Measurement [Domain] Fair Value Measurement [Domain] Portion at Fair Value Measurement Portion at Fair Value Measurement [Member] Carrying Value Reported Value Measurement [Member] Estimated Fair Value Estimate of Fair Value Measurement [Member] Fair Value, Hierarchy [Axis] Fair Value, Hierarchy [Axis] Fair Value Hierarchy [Domain] Fair Value Hierarchy [Domain] Quoted Prices in Active Markets for Identical Assets (Level 1) Fair Value, Inputs, Level 1 [Member] Significant Other Observable Inputs (Level 2) Fair Value, Inputs, Level 2 [Member] Significant Unobservable Inputs (Level 3) Fair Value, Inputs, Level 3 [Member] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Financial Assets Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract] Cash and cash equivalents Cash and Cash Equivalents, Fair Value Disclosure Trading securities Trading Securities Investment securities available-for-sale Available-for-sale Securities Investment securities held-to-maturity Loans, net Loans Receivable, Fair Value Disclosure FDIC indemnification asset FDIC Indemnification Asset Receivable from FDIC Accounts Receivable, Fair Value Disclosure Other earning assets Other Assets, Fair Value Disclosure Total financial assets Assets, Fair Value Disclosure Financial Liabilities Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract] Non-contractual deposits Deposits, Money Market Deposits and Negotiable Order of Withdrawal (NOW) Contractual deposits Time Deposits Federal Home Loan Bank advances Advances from Federal Home Loan Banks Short-term borrowings Short-term Debt, Fair Value Subordinated debentures Subordinated Debt Gross liability value of derivatives Total financial liabilities Financial and Nonfinancial Liabilities, Fair Value Disclosure Banking and Thrift [Abstract] Covered OREO Other Real Estate, Covered Non-covered OREO Other Real Estate, Non Covered Proceeds from sales of OREO Proceeds from Sale of Wholly Owned Real Estate and Real Estate Acquired in Settlement of Loans Net gain on sales of OREO Gains (Losses) on Sales of Other Real Estate Regulatory Capital Requirements [Abstract] Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table] Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table] Legal Entity [Axis] Legal Entity [Axis] Entity [Domain] Entity [Domain] CBF Consolidated Parent Company [Member] Bank Capital Bank Na [Member] Capital Bank NA. Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] Tier 1 Leverage Capital Tier One Leverage Capital [Abstract] Well capitalized requirement tier 1 capital to average assets, amount Tier One Leverage Capital Required to be Well Capitalized Adequately capitalized requirement tier 1 capital to average assets, amount Tier One Leverage Capital Required for Capital Adequacy Actual tier 1 capital to average assets Tier One Leverage Capital Tier 1 Common Equity Capital Tier One Common Equity To Capital [Abstract] Tier One Common Equity To Capital [Abstract] Well capitalized requirement tier 1 common equity capital to risk weighted assets, amount Tier One Common Equity Capital Required to be Well Capitalized Tier One Common Equity Capital Required to be Well Capitalized Adequately capitalized requirement tier 1 common equity capital to risk weighted assets, amount Tier One Common Equity Capital Required for Capital Adequacy Tier One Common Equity Capital Required for Capital Adequacy Actual tier 1 common equity capital to risk weighted average assets, amount Tier One Common Equity Capital Tier One Common Equity Capital Tier 1 Risk-based Capital Tier One Risk Based Capital [Abstract] Well capitalized requirement tier 1 capital to risk weighted assets, amount Tier One Risk Based Capital Required to be Well Capitalized Adequately capitalized requirement tier 1 capital to risk weighted assets, amount Tier One Risk Based Capital Required for Capital Adequacy Actual tier 1 capital to risk weighted assets, amount Tier One Risk Based Capital Total Risk-based Capital Capital [Abstract] Well capitalized requirement total capital to risk weighted assets, amount Capital Required to be Well Capitalized Adequately capitalized requirement total capital to risk weighted assets, amount Capital Required for Capital Adequacy Actual total capital to risk weighted assets, amount Capital Risk Based Ratios Risk Based Ratios [Abstract] Well capitalized requirement, tier 1 capital to average assets (greater than or equal to) Tier One Leverage Capital Required to be Well Capitalized to Average Assets Adequately capitalized requirement, tier 1 capital to average assets (greater than or equal to) Tier One Leverage Capital Required for Capital Adequacy to Average Assets Well capitalized requirement, tier 1 common equity capital to risk weighted assets (greater than or equal to) Tier One Common Equity Capital Required to be Well Capitalized to Risk Weighted Assets Tier One Common Equity Capital Required to be Well Capitalized to Risk Weighted Assets Adequately capitalized requirement, tier 1 common equity capital to risk weighted assets (greater than or equal to) Tier One Common Equity Capital Required for Capital Adequacy to Risk Weighted Assets Tier One Common Equity Capital Required for Capital Adequacy to Risk Weighted Assets Well capitalized requirement, tier 1 capital to risk weighted assets (greater than or equal to) Tier One Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets Adequately capitalized requirement, tier 1 capital to risk weighted assets (greater than or equal to) Tier One Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets Well capitalized requirement, total capital to risk weighted assets (greater than or equal to) Capital Required to be Well Capitalized to Risk Weighted Assets Adequately capitalized requirement, total capital to risk weighted assets (greater than or equal to) Capital Required for Capital Adequacy to Risk Weighted Assets Leverage Ratios Leverage Ratios [Abstract] Actual tier 1 capital to average assets Tier One Leverage Capital to Average Assets Actual tier 1 common equity capital to risk weighted assets Tier One Common Equity Capital to Risk Weighted Assets Tier One Common Equity Capital to Risk Weighted Assets Actual tier 1 capital to risk weighted assets Tier One Risk Based Capital to Risk Weighted Assets Actual tier 1 capital to total capital to risk weighted assets Capital to Risk Weighted Assets Statement of Cash Flows [Abstract] Net Income Net Income (Loss) Attributable to Parent Cash flows from operating activities Net Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to reconcile net income to net cash provided by (used in) operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Accretion of purchased credit impaired loans Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Accretion Depreciation and amortization Depreciation, Depletion and Amortization Impairment of premises and equipment Impairment of Long-Lived Assets to be Disposed of Provision (reversal) for loan and lease losses Provision for Loan and Lease Losses Deferred income tax Increase (Decrease) in Deferred Income Taxes Net amortization of investment securities premium/discount Investment Income, Net, Amortization of Discount and Premium Net realized gains on investment securities Gain (Loss) on Sale of Securities, Net Stock-based compensation expense Share-based Compensation Net gains on sales of OREO OREO valuation expense Other Real Estate Owned Valuation Adjustments Other real estate owned valuation adjustments. Other Other Operating Activities, Cash Flow Statement Net deferred loan origination fees Amortization of Deferred Loan Origination Fees, Net Mortgage loans originated for sale Payments for Origination of Mortgage Loans Held-for-sale Proceeds from sales of mortgage loans originated for sale Proceeds from Sale of Mortgage Loans Held-for-sale Fees on mortgage loans originated and sold Fees and Commissions, Mortgage Banking FDIC indemnification asset expense Federal Deposit Insurance Corporation Indemnification Asset Expense Federal deposit insurance corporation indemnification asset expense. Termination of loss share agreements Gain (Loss) on Contract Termination Gains on sales/disposals of premises and equipment Gain (Loss) on Disposition of Property Plant Equipment Net proceeds from FDIC loss share agreements Proceeds From Fdic Loss Share Agreements Proceeds from FDIC loss share agreements. Change in other assets Increase (Decrease) in Other Operating Assets Change in accrued expenses and other liabilities Increase Decrease In Accrued Expenses And Other Liabilities Increase decrease in accrued expenses and other liabilities. Net cash provided by (used in) operating activities Net Cash Provided by (Used in) Operating Activities, Continuing Operations Cash flows from investing activities Net Cash Provided by (Used in) Investing Activities [Abstract] Purchases of investment securities available-for-sale Payments to Acquire Available-for-sale Securities Purchases of investment securities held-to-maturity Payments to Acquire Held-to-maturity Securities Proceeds from sale of investment securities available-for-sale Proceeds from Sale and Maturity of Available-for-sale Securities Repayments of principal and maturities of investment securities available-for-sale Proceeds from Maturities, Prepayments and Calls of Available-for-sale Securities Repayments of principal and maturities of investment securities held-to-maturity Proceeds from Maturities, Prepayments and Calls of Held-to-maturity Securities Net purchases of FHLB and FRB stock Payments for (Proceeds from) Federal Home Loan Bank Stock Net decrease (increase) in loans Payments for (Proceeds from) Loans and Leases Proceeds paid to FDIC for settlement of loss share agreements Cash Paid to Settle Loss Sharing Agreement Cash Paid to Settle Loss Sharing Agreement Purchases of premises and equipment Payments to Acquire Property, Plant, and Equipment Proceeds from sales of premises and equipment Proceeds from Sale of Property, Plant, and Equipment Net cash provided by (used in) investing activities Net Cash Provided by (Used in) Investing Activities, Continuing Operations Cash flows from financing activities Net Cash Provided by (Used in) Financing Activities [Abstract] Net increase in demand, money market and savings accounts Increase (Decrease) in Deposits Net (decrease) increase in time deposits Increase (Decrease) in Time Deposits Net change in short-term borrowings Increase (Decrease) in Federal Funds Purchased and Securities Sold under Agreements to Repurchase, Net Repayment of short-term FHLB advances Repayments of Short-term Debt, Maturing in Three Months or Less Proceeds from short-term FHLB advances Proceeds from Short-term Debt, Maturing in Three Months or Less Decrease in long-term FHLB advances Net Increase (Decrease) in Long-term Federal Home Loan Borrowing Advances Net Increase (Decrease) in Long-term Federal Home Loan Borrowing Advances Excess tax benefit from share-based payment Excess Tax Benefit from Share-based Compensation, Financing Activities Proceeds from exercise of stock options Proceeds from Stock Options Exercised Dividends paid Payments of Dividends Purchases of treasury stock Payments for Repurchase of Common Stock Net cash provided by financing activities Net Cash Provided by (Used in) Financing Activities, Continuing Operations Net increase 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: Supplemental Cash Flow Information [Abstract] Interest paid Interest Paid Cash collections of contractual interest on purchased credit impaired loans Cash Payments Of Contractual Interest On Acquired Impaired Loans Cash payments of contractual interest on acquired impaired loans. Income taxes paid Income Taxes Paid, Net Supplemental disclosures of non-cash transactions: Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] OREO acquired through loan transfers Real Estate Owned, Transfer to Real Estate Owned Transfers of other assets to OREO Other Real Estate Owner, Transfer of Other Assets to Other Real Estate Owned Other Real Estate Owner, Transfer of Other Assets to Other Real Estate Owned Loans Loans, Notes, Trade and Other Receivables Disclosure [Text Block] Derivative Instruments, Gain (Loss) [Table] Derivative Instruments, Gain (Loss) [Table] Interest income Interest Income [Member] Derivative Instruments, Gain (Loss) [Line Items] Derivative Instruments, Gain (Loss) [Line Items] Amount of Gain or (Loss) Recognized in Accumulated OCI on Derivative (Effective Portion) Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income (Loss), Effective Portion, Net Amount of Gain Reclassified from Accumulated OCI on Derivative (Effective Portion) Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net Amount of Gain or (Loss) Recognized in Income on Derivative (Ineffective Portion) Derivative Instruments, Gain (Loss) Recognized in Income, Ineffective Portion and Amount Excluded from Effectiveness Testing, Net Shareholders' Equity and Minimum Regulatory Capital Requirements Shareholders' Equity Note Disclosure and Regulatory Capital Requirements under Banking Regulations [Text Block] Shareholders' Equity Note Disclosure and Regulatory Capital Requirements under Banking Regulations [Text Block] Nature of Operations and Principles of Consolidation Consolidation, Policy [Policy Text Block] Use of Estimates and Assumptions Use of Estimates, Policy [Policy Text Block] Recent Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Derivative [Table] Derivative [Table] Derivative [Line Items] Derivative [Line Items] Offsetting of derivative assets: Offsetting Derivative Assets [Abstract] Offsetting of Derivative Assets, Gross Amount of Recognized Assets Offsetting of Derivative Assets, Gross Amount Offset in the Balance Sheets Derivative Asset, Fair Value, Gross Liability Offsetting of Derivative Assets, Net Amount of Assets Presented in the Balance Sheets Derivative Asset Offsetting of Derivative Assets, Gross Amounts Not Offset in the Balance Sheet, Offsetting of Derivative Assets, Financial Instruments Derivative, Collateral, Obligation to Return Securities Offsetting of Derivative Assets, Gross Amounts Not Offset in the Balance Sheet, Cash Collateral Received Derivative, Collateral, Obligation to Return Cash Offsetting of Derivative Assets, Net Amount Derivative Asset, Fair Value, Amount Offset Against Collateral Offsetting of derivative liabilities: Offsetting Derivative Liabilities [Abstract] Offsetting of Derivative Liabilities, Gross Amount of Recognized Assets Offsetting of Derivative Liabilities, Gross Amount Offset in the Balance Sheets Derivative Liability, Fair Value, Gross Asset Offsetting of Derivative Liabilities, Net Amount of Assets Presented in the Balance Sheets Derivative Liability Offsetting of Derivative Liabilities, Gross Amounts Not Offset in the Balance Sheet, Financial Instruments Derivative, Collateral, Right to Reclaim Securities Offsetting of Derivative Liabilities, Gross Amounts Not Offset in the Balance Sheet, Cash Collateral Received Derivative, Collateral, Right to Reclaim Cash Offsetting of Derivative Liabilities, Net Amount Derivative Liability, Fair Value, Amount Offset Against Collateral Debt Securities Debt Securities [Member] Amortized Cost Available-for-sale Securities, Debt Maturities, Single Maturity Date, Amortized Cost Basis [Abstract] Available-for-sale, Amortized Cost, Due in one year or less Available-for-sale Securities, Debt Maturities, Next Rolling Twelve Months, Amortized Cost Basis Available-for-sale, Amortized Cost, Due after one year through five years Available-for-sale Securities, Debt Maturities, Rolling Year Two Through Five, Amortized Cost Basis Available-for-sale, Amortized Cost, Due after five years through ten years Available-for-sale Securities, Debt Maturities, Rolling Year Six Through Ten, Amortized Cost Basis Available-for-sale, Amortized Cost, Due after ten years Available-for-sale Securities, Debt Maturities, after Ten Years, Amortized Cost Basis Available-for-sale, Amortized Cost, Mortgage-backed securities—residential issued by government sponsored entities Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Amortized Cost Basis Available-for-sale, Amortized Cost Estimated Fair Value Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract] Available-for-sale, Estimated Fair Value, Due in one year or less Available-for-sale Securities, Debt Maturities, Next Rolling Twelve Months, Fair Value Available-for-sale, Estimated Fair Value, Due after one year through five years Available-for-sale Securities, Debt Maturities, Rolling Year Two Through Five, Fair Value Available-for-sale, Estimated Fair Value, Due after five years through ten years Available-for-sale Securities, Debt Maturities, Rolling Year Six Through Ten, Fair Value Available-for-sale, Estimated Fair Value, Due after ten years Available-for-sale Securities, Debt Maturities, Rolling after Year Ten, Fair Value Available-for-sale, Estimated Fair Value, Mortgage-backed securities—residential issued by government sponsored entities Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Fair Value Available-for-sale, Estimated Fair Value Yield Available-for-sale Securities, Debt Maturities, Single Maturity Date, Yield [Abstract] Available-for-sale Securities, Debt Maturities, Single Maturity Date, Yield [Abstract] Available-for-sale, Due in one year or less, Yield Available-for-sale Securities, Debt Maturities, Next Rolling Twelve Months, Yield Available-for-sale Securities, Debt Maturities, Next Rolling Twelve Months, Yield Available-for-sale, Due after one year through five years, Yield Available-for-sale Securities, Debt Maturities, Rolling Year Two Through Five, Yield Available-for-sale Securities, Debt Maturities, Rolling Year Two Through Five, Yield Available-for-sale, Due after five years through ten years, Yield Available-for-sale Securities, Debt Maturities, Rolling Year Six Through Ten, Yield Available-for-sale Securities, Debt Maturities, Rolling Year Six Through Ten, Yield Available-for-sale, Due after ten years, Yield Available-for-sale Securities, Debt Maturities, Rolling after Year Ten, Yield Available-for-sale Securities, Debt Maturities, Rolling after Year Ten, Yield Available-for-sale, Mortgage-backed securities—residential issued by government sponsored entities, Yield Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Yield Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Yield Available-for-sale, Total, Yield Available For Sale Securities Debt Maturities to Yield Available For Sale Securities Debt Maturities to Yield Amortized Cost Held-to-maturity Securities, Debt Maturities, Single Maturity Date, Amortized Cost Basis [Abstract] Held-to-maturity, Amortized Cost, Due in one year or less Held-to-maturity Securities, Debt Maturities, Next Rolling Twelve Months, Amortized Cost Held-to-maturity, Amortized Cost, Due after one year through five years Held-to-maturity Securities, Debt Maturities, Rolling Year Two Through Five, Amortized Cost Held-to-maturity, Amortized Cost, Due after five years through ten years Held-to-maturity Securities, Debt Maturities, Rolling Year Six Through Ten, Amortized Cost Held-to-maturity, Amortized Cost, Due after ten years Held-to-maturity Securities, Debt Maturities, Rolling after Ten Years, Amortized Cost Held-to-maturity, Amortized Cost, Mortgage-backed securities—residential issued by government sponsored entities Held-to-maturity Securities, Debt Maturities, without Single Maturity Date, Net Carrying Amount Held-to-maturity, Amortized Cost Held-to-maturity Securities Estimated Fair Value Held-to-maturity Securities, Debt Maturities, Single Maturity Date, Fair Value [Abstract] Held-to-maturity, Estimated Fair Value, Due in one year or less Held-to-maturity Securities, Debt Maturities, Next Rolling Twelve Months, Fair Value Held-to-maturity, Estimated Fair Value, Due after one year through five years Held-to-maturity Securities, Debt Maturities, Rolling Year Two Through Five, Fair Value Held-to-maturity, Estimated Fair Value, Due after five years through ten years Held-to-maturity Securities, Debt Maturities, Rolling Year Six Through Ten, Fair Value Held-to-maturity, Estimated Fair Value, Due after ten years Held-to-maturity Securities, Debt Maturities, Rolling after Ten Years, Fair Value Held-to-maturity, Estimated Fair Value, Mortgage-backed securities—residential issued by government sponsored entities Held-to-maturity Securities, Debt Maturities, without Single Maturity Date, Fair Value Held-to-maturity, Estimated Fair Value Yield Held-to-maturity Securities, Debt Maturities, Single Maturity Date, Yield [Abstract] Held-to-maturity Securities, Debt Maturities, Single Maturity Date, Yield [Abstract] Held-to-maturity, Due in one year or less, Yield Held-to-maturity Securities, Debt Maturities, Next Rolling Twelve Months, Yield Held-to-maturity Securities, Debt Maturities, Next Rolling Twelve Months, Yield Held-to-maturity, Due after one year through five years, Yield Held-to-maturity Securities, Debt Maturities, Rolling Year Two Through Five, Yield Held-to-maturity Securities, Debt Maturities, Rolling Year Two Through Five, Yield Held-to-maturity, Due after five years through ten years, Yield Held-to-maturity Securities, Debt Maturities, Rolling Year Six Through Ten, Yield Held-to-maturity Securities, Debt Maturities, Rolling Year Six Through Ten, Yield Held-to-maturity, Due after ten years, Yield Held-to-maturity Securities, Debt Maturities, Rolling after Ten Years, Yield Held-to-maturity Securities, Debt Maturities, Rolling after Ten Years, Yield Held-to-maturity, Mortgage-backed securities—residential issued by government sponsored entities, Yield Held-to-maturity Securities, Debt Maturities, without Single Maturity Date, Yield Held-to-maturity Securities, Debt Maturities, without Single Maturity Date, Yield Held-to-maturity, Total, Yield Held To Maturity Securities Debt Securities To Yield Held to maturity securities debt securities to yield. Accretable Yield Certain Loans Acquired in Transfer Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward] Balance at beginning of period Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Accretion of income Reclassification from nonaccretable difference Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Reclassifications (to) from Nonaccretable Difference Other Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Other Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Other Balance at end of period Nonaccretable Difference Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Reclassifications (to) from Nonaccretable Difference [Abstract] Nonaccretable difference, balance at the end of the period Certain Loans Acquired in Transfer, Nonaccretable Difference Statement of Stockholders' Equity [Abstract] Equity Components [Axis] Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Accumulated Other Comprehensive Income (Loss) AOCI Attributable to Parent [Member] Other comprehensive income tax expense Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent Fair Value Measurements, Recurring and Nonrecurring [Table] Fair Value Measurements, Recurring and Nonrecurring [Table] Measurement Frequency [Axis] Measurement Frequency [Axis] Fair Value, Measurement Frequency [Domain] Fair Value, Measurement Frequency [Domain] Fair Value on Recurring Basis Fair Value, Measurements, Recurring [Member] Mortgage-backed securities—residential Residential Mortgage Backed Securities [Member] Industrial revenue bonds Industrial Revenue Bond [Member] Industrial revenue bond. 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] Assets Derivative Asset, Fair Value, Amount Not Offset Against Collateral [Abstract] Available-for-sale securities: Available-for-sale Securities [Abstract] Available-for-sale securities Liabilities Derivative Liability, Fair Value, Amount Not Offset Against Collateral [Abstract] Advances from Federal Home Loan Banks [Abstract] Federal Home Loan Bank Advances and Short-Term Borrowings Short-term Debt [Text Block] FDIC Indemnification Asset [Roll Forward] FDIC Indemnification Asset [Roll Forward] FDIC indemnification asset, beginning balance Termination of FDIC loss sharing agreements Gain (Loss) on Contract Termination, Net of Settlement Costs Gain (Loss) on Contract Termination, Net of Settlement Costs Indemnification asset income FDIC Indemnification Asset, Additional Estimated Losses Amortization of indemnification asset FDIC Indemnification Asset, Amortization FDIC Indemnification Asset, Amortization Cash received on reimbursable losses FDIC Indemnification Asset, Cash Payments Received FDIC indemnification asset, ending balance Range [Axis] Range [Axis] Range [Domain] Range [Domain] Minimum Minimum [Member] Farm Land Land Farm And Agriculture Loans [Member] Land farm and agriculture loans. State and Political Subdivision Obligations State and Political Subdivision Obligations [Member] State and Political Subdivision Obligations Deposit Customer Overdraft Deposit Overdraft [Member] Deposit overdraft. Loans held for sale Loans Receivable Held-for-sale, Net, Not Part of Disposal Group Deferred loan origination costs Loans and Leases Receivable, Deferred Income Total loans Loans and Leases Receivable, Gross, Covered and Not Covered, Including Held-for-sale Loans and Leases Receivable, Gross, Covered and Not Covered, Including Held-for-sale Analysis of loans individually by classification of credit risk Loans and Leases Receivable, Threshold to Perform Annual Credit Risk Loans and Leases Receivable, Threshold to Perform Annual Credit Risk Assets and Liabilities Measured at Fair Value on a Recurring Basis Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Fair Value Measurements on Recurring Basis Using Significant Unobservable Inputs (Level 3) Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block] Quantitative Information About Recurring Level 3 Fair Value Measurements Fair Value Inputs, Liabilities, Quantitative Information [Table Text Block] Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis Fair Value Measurements, Nonrecurring [Table Text Block] Quantitative Information About Nonrecurring Level 3 Fair Value Measurements Fair Value Inputs, Assets, Quantitative Information [Table Text Block] Carrying Amounts and Estimated Fair Values of Financial Instruments Fair Value, by Balance Sheet Grouping [Table Text Block] Earnings Per Share [Abstract] Computation of Earnings Per Share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Weighted Average Anti-Dilutive Stock Options and Unvested Restricted Shares Excluded from the Computation of Diluted Earnings Per Share Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block] Long-Term Borrowings Long-term Debt [Text Block] Income Tax Disclosure [Abstract] Effective income tax rate Effective Income Tax Rate Reconciliation, Percent Deferred income tax asset, net Deferred Income Tax Assets, Net Valuation allowance Deferred Tax Assets, Valuation Allowance Operating loss carryforwards Operating Loss Carryforwards Amount of annual commutative limitation Operating Loss Carryforwards, Annual Cumulative Limitation Operating Loss Carryforwards, Annual Cumulative Limitation Unrecognized tax benefits Unrecognized Tax Benefits Uncertain tax positions Liability for Uncertain Tax Positions, Current Reconciliation of Income Tax Computed at Applicable Federal Statutory Income Tax Rates to Total Income Taxes Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] Other Real Estate Owned Real Estate Owned [Text Block] Fair Value Inputs, Liabilities, Quantitative Information [Table] Fair Value Inputs, Liabilities, Quantitative Information [Table] Valuation Technique [Axis] Valuation Technique [Axis] Valuation Technique [Domain] Valuation Technique [Domain] Discounted Cash Flow Discounted Cash Flow [Member] Discounted cash flow. Maximum Maximum [Member] Fair Value Inputs, Liabilities, Quantitative Information [Line Items] Fair Value Inputs, Liabilities, Quantitative Information [Line Items] Fair Value Discount rate Fair Value Inputs, Discount Rate Illiquidity factor Fair Value Inputs, Counterparty Credit Risk Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Antidilutive Securities [Axis] Antidilutive Securities [Axis] Antidilutive Securities, Name [Domain] Antidilutive Securities, Name [Domain] Unvested Restricted Shares Restricted Stock [Member] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Anti-dilutive (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Schedule of FDIC Indemnification Asset FDIC Indemnification Asset Roll Forward [Table Text Block] Federal Home Loan Bank Advances Owed Schedule of Federal Home Loan Bank, Advances, by Branch of FHLB Bank [Table Text Block] Loans modified in TDRs with recorded investments Financing Receivable, Modifications, Post-Modification Recorded Investment Major Classifications of Loans Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] Roll Forward of Accretable Yield Impaired Financing Receivables [Table Text Block] Major Categories of Loans Major Categories Of Loans Table [Text Block] Major categories of loans. Aging of the Recorded Investment in Past Due Loans, Based on Contractual Terms Past Due Financing Receivables [Table Text Block] Loans, Excluding Purchased Credit-Impaired Loans by Internal Ratings Financing Receivable Credit Quality Indicators [Table Text Block] Allowance for Loan and Lease Losses Allowance for Credit Losses on Financing Receivables [Table Text Block] Roll Forward of Allowance for Loan and Lease Losses Roll Forward Of Allowance For Loan Losses [Table Text Block] Roll forward of allowance for loan losses. Roll forward of Allowance for Loan and Lease Losses for PCI and Non-PCI Loans Allowance For Loan Losses [Table Text Block] Allowance for Loan Losses [Table Text Block] Summary of Allowance for Loan and Lease Losses and Recorded Investment in Loans by Class of Loans and by Impairment Evaluation Schedule of Credit Losses Related to Financing Receivables, Current and Noncurrent [Table Text Block] Summary of Derivative Instrument Contracts at Fair Value and Balance Sheet Classification Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block] Summary of Derivative Instrument on the Consolidated Statements of Income Derivative Instruments, Gain (Loss) [Table Text Block] Offsetting Derivative Assets Offsetting Assets [Table Text Block] Offsetting Derivative Liabilities Offsetting Liabilities [Table Text Block] Real Estate Property Ownership [Axis] Real Estate Property Ownership [Axis] Real Estate Properties [Domain] Real Estate Properties [Domain] Commercial properties Residential properties Residential Real Estate [Member] Transfers of assets and liabilities between levels of the fair value Transfers Of Assets And Liabilities Between Levels Of Fair Value Transfers of assets and liabilities between levels of the fair value. Other real estate owned, gross Other Real Estate, Foreclosed Assets, and Repossessed Assets, Gross Other Real Estate, Foreclosed Assets, and Repossessed Assets, Gross Other real estate owned, valuation allowance Real Estate Owned, Valuation Allowance, Amounts Applied Other real estate Other Real Estate Weighted average number of shares outstanding: Weighted Average Number of Shares Outstanding, Diluted [Abstract] Basic (in shares) Weighted Average Number of Shares Outstanding, Basic Dilutive effect (in shares) Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements Diluted (in shares) Weighted Average Number of Shares Outstanding, Diluted Other Real Estate [Roll Forward] Other Real Estate [Roll Forward] Balance, beginning of period Other Real Estate, Foreclosed Assets, and Repossessed Assets Real estate acquired from borrowers and transfers from other assets Other Real Estate, Additions Valuation allowance Properties sold Other Real Estate Owned Property Sold And Other Other real estate owned property sold and other. Balance, end of period Trust Preferred Securities Trust Preferred Securities [Member] Trust preferred securities. Number of trust preferred securities acquired Number Of Pooled Offerings Of Trust Preferred Securities Assumed Number Of Pooled Offerings Of Trust Preferred Securities Assumed Life of debt securities and trust preferred securities Debt Instrument, Term Period allowed for deferral of interest payment on the trust preferred securities (up to) Period Allowed For Deferral Of Interest Payment On Trust Preferred Securities Period allowed for deferral of interest payment on the trust preferred securities. Fair Value Fair Value Disclosures [Text Block] Document And Entity Information [Abstract] Document and entity information. Entities [Table] Entities [Table] Document Information [Line Items] Document Information [Line Items] 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 Document Type Document Type Document Period End Date Document Period End Date Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Amendment Flag Amendment Flag Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table] Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table] Plan Name [Axis] Plan Name [Axis] Plan Name [Domain] Plan Name [Domain] 2010 And 2013 Plan Equity Compensation 2010 And 2013 Plan [Member] Equity Compensation, 2010 And 2013 Plan [Member] 2013 Plan Equity Compensation 2013 Plan [Member] Equity Compensation, 2013 Plan [Member] Restricted stock Title of Individual [Axis] Title of Individual [Axis] Relationship to Entity [Domain] Relationship to Entity [Domain] 10% Percent Owners Ten Percent Owners [Member] Ten Percent Owners [Member] Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] Number of compensation plans Share-based Compensation Arrangement by Share-based Payment Award, Number of Plans Share-based Compensation Arrangement by Share-based Payment Award, Number of Plans Plan effective date Share Based Compensation Arrangement By Share Based Payment Award Effective Date Share Based Compensation Arrangement By Share Based Payment Award Effective Date Plan expiration date Share-based Compensation Arrangement by Share-based Payment Award, Expiration Date Number of shares authorized under plan Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized Tax benefit related to stock-based compensation expense Employee Service Share-based Compensation, Tax Benefit from Compensation Expense Exercise price for common stock as a percentage of fair value (at least) Share-based Compensation Arrangement by Share-based Payment Award, Purchase Price of Common Stock, Percent Stock ownership percentage for 110% exercise price (more than) Share Based Compensation Arrangement By Share Based Payment Award, Required Stock Ownership Percentage To Exercise At 110 Percent Of Fair Value Share Based Compensation Arrangement By Share Based Payment Award Required Stock Ownership Percentage To Exercise At 110 Percent of Fair Value Stock award exercise expiration period from grant date Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period Options exercised after ten years Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable After Expiration Date, Number Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable After Expiration Date, Number Stock options granted Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures Weighted average remaining contractual life Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Outstanding Options, Weighted Average Remaining Contractual Term Aggregate intrinsic value, outstanding Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Aggregate Intrinsic Value Vesting period Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period Restricted stock granted Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period Fair Value on Nonrecurring Basis Fair Value, Measurements, Nonrecurring [Member] Other real estate owned Other Real Estate Owned, Fair Value Disclosure Other Real Estate Owned, Fair Value Disclosure Other repossessed assets Other Repossessed Assets Impaired loans Fair Value Of Impaired Loans Fair value of impaired loans. FDIC Indemnification Asset FDIC Indemnification Asset [Text Block] FDIC indemnification asset. Schedule of Financing Receivable, Recorded Investment, Credit Quality Indicator [Table] Schedule of Financing Receivable, Recorded Investment, Credit Quality Indicator [Table] Non-PCI Loans Internal Credit Assessment [Axis] Internal Credit Assessment [Axis] Internal Credit Assessment [Domain] Internal Credit Assessment [Domain] Pass Pass [Member] Special Mention Special Mention [Member] Substandard Accruing/Accreting Substandard Accrual And Accretion [Member] Substandard accrual and accretion. Substandard Nonaccrual Substandard Nonaccrual [Member] Substandard nonaccrual. Doubtful Doubtful [Member] Financing Receivable, Recorded Investment [Line Items] Financing Receivable, Recorded Investment [Line Items] FDIC Indemnification Asset [Table] F D I C Indemnification Asset [Table] Fdic indemnification asset. Single Family Loans Single Family Loans [Member] Single Family Loans [Member] Commercial and Other Loans Commercial And Other Loans [Member] Commercial And Other Loans [Member] Other Covered Assets Other Covered Assets [Member] Other Covered Assets [Member] FDIC Indemnification Asset [Line Items] Fdic Indemnification Asset [Line Items] Fdic indemnification asset. Percentage future credit losses and workout expenses to be absorbed by FDIC FDIC Future Credit Losses And Workout Expense Coverage Percentage FDIC covered future credit losses and workout expenses percentage. Number of FDIC loss sharing agreements Number of FDIC Loss Sharing Agreements Number of FDIC Loss Sharing Agreements Period covered by loss sharing agreement FDIC Indemnification Assets, Period Covered By Loss Sharing Agreement FDIC Indemnification Assets, Period Covered By Loss Sharing Agreement Payment to FDIC as consideration for the early termination of loss share agreements Contract termination expense Summary of Components and Classification of Stock-Based Compensation Expense Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block] Summary of Stock Option Activity Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block] Summary of Options Outstanding Disclosure of Share-based Compensation Arrangements by Share-based Payment Award [Table Text Block] Summary of Unvested Restricted Stock Activity Schedule of Share-based Compensation, Restricted Stock Units Award Activity [Table Text Block] Amortized Cost and Estimated Fair Value of Investment Securities Available for Sale and Held to Maturity Marketable Securities [Table Text Block] Estimated Fair Value of Investment Securities Available for Sale and Held to Maturity by Contractual Maturity Investments Classified by Contractual Maturity Date [Table Text Block] Securities with Unrealized Losses Not Recognized in Income Schedule of Unrealized Loss on Investments [Table Text Block] Earnings Per Common Share Earnings Per Share [Text Block] Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] Subordinated Debt Subordinated Debt [Member] 3 Month LIBOR Three Month London Interbank Offered Rate (LIBOR) [Member] Three Month London Interbank Offered Rate (LIBOR) [Member] Debt Instrument [Axis] Debt Instrument [Axis] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Subordinated Debt With 4 Point 20 Percent Interest Rate Subordinated Debt With 4 Point 20 Percent Interest Rate [Member] Subordinated Debt With 4 Point 20 Percent Interest Rate [Member] Subordinated Debt With 4 Point 20 Percent Interest Rate Two Subordinated Debt With 4 Point 20 Percent Interest Rate Two [Member] Subordinated Debt With 4 Point 20 Percent Interest Rate Two [Member] Subordinated Debt With 3 Point 73 Percent Interest Rate Subordinated Debt With 3 Point 73 Percent Interest Rate [Member] Subordinated Debt With 3 Point 73 Percent Interest Rate [Member] Subordinated Debt With 3 Point 47 Percent Interest Rate Subordinated Debt With 3 Point 47 Percent Interest Rate [Member] Subordinated Debt With 3 Point 47 Percent Interest Rate [Member] Subordinated Debt With 3 Point 47 Percent Interest Rate Two Subordinated Debt With 3 Point 47 Percent Interest Rate Two [Member] Subordinated Debt With 3 Point 47 Percent Interest Rate Two [Member] Subordinated Debt With 2 Point 31 Percent Interest Rate Subordinated Debt With 2 Point 31 Percent Interest Rate [Member] Subordinated Debt With 2 Point 31 Percent Interest Rate [Member] Subordinated Debt With 2 Point 03 Percent Interest Rate Subordinated Debt With 2 Point 03 Percent Interest Rate [Member] Subordinated Debt With 2 Point 03 Percent Interest Rate [Member] Subordinated Debt With 2 Point 17 Percent Interest Rate Subordinated Debt With 2 Point 17 Percent Interest Rate [Member] Subordinated Debt With 2 Point 17 Percent Interest Rate [Member] Subordinated Debt With 2 Point 17 Percent Interest Rate Two Subordinated Debt With 2 Point 17 Percent Interest Rate Two [Member] Subordinated Debt With 2 Point 17 Percent Interest Rate Two [Member] Subordinated Debt With 2 Point 84 Percent Interest Rate Subordinated Debt With 2 Point 84 Percent Interest Rate [Member] Subordinated Debt With 2 Point 84 Percent Interest Rate [Member] Subordinated Debt With 2 Point 07 Percent Interest Rate Subordinated Debt With 2 Point 07 Percent Interest Rate [Member] Subordinated Debt With 2 Point 07 Percent Interest Rate [Member] Date of Offering Debt Instrument, Offering Date Face Amount Debt Instrument, Face Amount Carrying Amount Interest Rate Debt Instrument, Interest Rate, Effective Percentage Interest Rate, Basis Points Debt Instrument, Basis Spread on Variable Rate Maturity Date Debt Instrument, Maturity Date Income Statement [Abstract] Interest and dividend income Interest and Dividend Income, Operating [Abstract] Loans, including fees Interest and Fee Income, Loans and Leases Investment securities: Interest and Dividend Income, Securities, by Taxable Status [Abstract] Taxable interest income Interest Income, Securities, Operating, Taxable Tax-exempt interest income Interest Income, Securities, Operating, Tax Exempt Dividends Dividend Income, Operating Interest-bearing deposits in other banks Interest Income, Deposits with Financial Institutions Other earning assets Other Interest and Dividend Income Total interest and dividend income Interest and Dividend Income, Operating Interest expense Interest Expense [Abstract] Deposits Interest Expense, Deposits Long-term borrowings Interest Expense, Long-term Debt Federal Home Loan Bank advances Interest Expense, Federal Home Loan Bank and Federal Reserve Bank Advances, Long-term Other borrowings Interest Expense, Other Total interest expense Interest Expense Net Interest Income Interest Income (Expense), Net Net interest income after provision (reversal) for loan and lease losses Interest Income (Expense), after Provision for Loan Loss Non-Interest Income Noninterest Income [Abstract] Service charges on deposit accounts Fees and Commissions, Depositor Accounts Debit card income Fees and Commissions, Debit Cards Fees on mortgage loans originated and sold Investment advisory and trust fees Investment Banking, Advisory, Brokerage, and Underwriting Fees and Commissions FDIC indemnification asset expense Termination of loss share agreements Investment securities gains (losses), net Other income Noninterest Income, Other Operating Income Total non-interest income Noninterest Income Non-Interest Expense Noninterest Expense [Abstract] Salaries and employee benefits Labor and Related Expense Stock-based compensation expense Net occupancy and equipment expense Occupancy, Net Computer services Equipment Expense Software expense Information Technology and Data Processing Telecommunication expense Communication OREO valuation expense Foreclosed asset related expense Foreclosed Real Estate Expense Loan workout expense Loan Processing Fee Conversion and merger related expense Business Combination, Acquisition Related Costs Professional fees Professional Fees Contingent value right expense Contingent Value Right Expense Contingent value right expense. Regulatory assessments Federal Deposit Insurance Corporation Premium Expense Restructuring charges, net Restructuring Charges Other expense Other Noninterest Expense Total non-interest expense Noninterest Expense Income before income taxes Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest Income tax expense Income Tax Expense (Benefit) Net income Earnings per share: Basic (in dollars per share) Earnings Per Share, Basic Diluted (in dollars per share) Earnings Per Share, Diluted Weighted average shares outstanding: Earnings Per Share, Basic and Diluted, Other Disclosures [Abstract] Allowance For Loan And Lease Losses [Table] Allowance For Loan And Lease Losses [Table] Allowance for loan and lease losses. PCI Loans Allowance For Loan And Lease Losses [Line Items] Allowance For Loan And Lease Losses [Line Items] Allowance for loan and lease losses. Allowance for Loan and Lease Losses [Roll Forward] Allowance for Loan and Lease Losses [Roll Forward] Balance, beginning of period Loans and Leases Receivable, Allowance Provision (reversal) for loan losses Loans charged off Allowance for Loan and Lease Losses, Write-offs Recoveries of non-PCI loans previously charged-off Allowance for Loan and Lease Loss, Recovery of Bad Debts Balance, end of period Other Real Estate Owned Other Real Estate, Roll Forward [Table Text Block] Available-for-Sale Unrealized Gains Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax Unrealized Losses Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax State and political subdivisions—tax exempt Tax-exempt Money Market Funds [Member] State and political subdivisions—taxable Taxable Money Market Funds [Member] Held-to-Maturity Held-to-maturity Securities [Abstract] Unrealized Gains Held-to-maturity Securities, Accumulated Unrecognized Holding Gain Unrealized Losses Held-to-maturity Securities, Accumulated Unrecognized Holding Loss Non-PCI Loans, New Non Purchased Credit Impaired Loans New [Member] Non purchased credit impaired loans new. Non-covered loans Loans and Leases Receivable, Net of Deferred Income Covered loans Loans and Leases Receivable, Gross, Carrying Amount, Covered Shares Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Beginning balance (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number Granted (in shares) Vested or released (in shares) Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Exercised Or Settled Share based compensation arrangement by share based payment award equity instruments other than options exercised or settled. Canceled, expired or forfeited (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period Ending balance (in shares) Weighted Average Grant-Date Fair Value Per Share Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Beginning balance (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value Granted (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Vested or released (in dollars per share) Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Exercised In Period Weighted Average Grant Date Fair Value Share based compensation arrangement by share based payment award equity instruments other than options exercised in period weighted average grant date fair value. Canceled, expired or forfeited (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Ending balance (in dollars per share) Schedule of Financing Receivable, Allowance for Credit Losses [Table] Schedule of Financing Receivable, Allowance for Credit Losses [Table] Acquired Loans Acquired Loans [Member] Acquired Loans [Member] Financing Receivable, Allowance for Credit Losses [Line Items] Financing Receivable, Allowance for Credit Losses [Line Items] Allowance for Loan Losses, Individually Evaluated for Impairment Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment Allowance for Loan Losses, Collectively Evaluated for Impairment Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment Allowance for Loan Losses, Purchased Credit-Impaired Financing Receivable, Allowance for Credit Losses Loans, Individually Evaluated for Impairment Financing Receivable, Individually Evaluated for Impairment Loans, Collectively Evaluated for Impairment Financing Receivable, Collectively Evaluated for Impairment Loans, Purchase Credit-Impaired Financing Receivable, Net Loans collectively evaluated for impairment, unamortized purchase discounts (Premium) Unamortized Loan Commitment and Origination Fees and Unamortized Discounts or Premiums Assets Assets [Abstract] Cash and due from banks Cash and Due from Banks Interest-bearing deposits in other banks Interest-bearing Deposits in Banks and Other Financial Institutions Total cash and cash equivalents Investment securities available-for-sale at fair value (amortized cost $657,631 and $640,455, respectively) Investment securities held-to-maturity at amortized cost (fair value $467,372 and $475,134, respectively) Loans, net of deferred loan costs and fees Loans and Leases Receivable, Net of Deferred Income, Covered and Not Covered Loans and Leases Receivable, Net of Deferred Income, Covered and Not Covered Less: Allowance for loan and lease losses Loans and Leases Receivable, Covered and Not Covered, Allowance Loans and Leases Receivable, Covered and Not Covered, Allowance Loans, net Loans and Leases Receivable, Net Reported Amount, Covered and Not Covered Other real estate owned Receivable from FDIC Receivable From Fdic Receivable from FDIC. Premises and equipment, net Property, Plant and Equipment, Net Goodwill Goodwill Intangible assets, net Intangible Assets, Net (Excluding Goodwill) Other assets Other Assets Total Assets Assets Liabilities and Shareholders’ Equity Liabilities and Equity [Abstract] Liabilities Liabilities [Abstract] Deposits: Deposits [Abstract] Non-interest bearing demand Noninterest-bearing Deposit Liabilities Interest bearing demand Deposits, Negotiable Order of Withdrawal (NOW) Money market Deposits, Money Market Deposits Savings Deposits, Savings Deposits Time deposits Total deposits Deposits Short-term borrowings Short-term Debt Long-term borrowings Accrued expenses and other liabilities Accrued Liabilities and Other Liabilities Total liabilities Liabilities Commitments and contingencies Commitments and Contingencies Shareholders’ equity Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] Preferred stock $0.01 par value: 50,000 shares authorized, 0 shares issued Preferred Stock, Value, Issued Common stock Common Stock, Value, Issued Additional paid in capital Additional Paid in Capital Retained earnings Retained Earnings (Accumulated Deficit) Accumulated other comprehensive income (loss) Accumulated Other Comprehensive Income (Loss), Net of Tax Treasury stock, at cost, 12,345 and 12,196 shares, respectively Treasury Stock, Value Total shareholders’ equity Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Total Liabilities and Shareholders’ Equity Liabilities and Equity Stock-based compensation expense Allocated Share-based Compensation Expense Provision/ (Reversals) Provision For Reversal Of Provision On Loan Lease And Other Losses Provision for (reversal of provision on) loan, lease and other losses Net(Charge-offs)/ Recoveries Allowance for Loan and Lease Losses Write-offs, Net Income before income taxes Income taxes computed at Federal statutory tax rate Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount Effect of: Effective Income Tax Rate Reconciliation, Amount [Abstract] State taxes (net of federal benefit) Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount Tax-exempt interest income, net Effective Income Tax Rate Reconciliation, Tax Exempt Income, Amount Contingent value right expense (CVR) Effective Income Tax Rate Reconciliation, Nondeductible Expense, Other, Amount Other, net Effective Income Tax Rate Reconciliation, Other Adjustments, Amount Total income tax expense Derivative and Hedging Activities Derivative Instruments and Hedging Activities Disclosure [Text Block] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Beginning balance Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value Principal reduction Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases, (Sales), Issuances, (Settlements) Included in other comprehensive income Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Other Comprehensive Income (Loss) Ending balance Charge-offs Recoveries Net charge-offs Schedule of Minimum and Actual Ratios Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table Text Block] Summary of Subordinated Debentures Schedule of Subordinated Borrowing [Table Text Block] Schedule of Maturities of Long-Term Borrowings Schedule of Maturities of Long-term Debt [Table Text Block] Allowance for Loan Losses Allowance for Credit Losses [Text Block] Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table] Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table] Exercise Price Range [Axis] Exercise Price Range [Axis] Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Domain] Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Domain] $18.00 Range One [Member] Range one. $20.00 Range Two [Member] Range two. $28.44 - $2,026.00 Range Three [Member] Range three. Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] Exercise prices, lower range limit Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Lower Range Limit Exercise prices, upper range limit Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Upper Range Limit Outstanding options (in shares) Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Number of Outstanding Options Weighted average remaining contractual life, outstanding options Weighted average exercise price per share, outstanding options (in dollars per share) Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Outstanding Options, Weighted Average Exercise Price Exercisable options (in shares) Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Number of Exercisable Options Weighted average exercise price per share, exercisable options (in dollars per share) Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Exercisable Options, Weighted Average Exercise Price Income Taxes Income Tax Disclosure [Text Block] Share Repurchase Program [Axis] Share Repurchase Program [Axis] Share Repurchase Program [Domain] Share Repurchase Program [Domain] Share Repurchase Plan Share Repurchase Plan [Member] Share Repurchase Plan [Member] Capital to risk-weighted assets (at least) Tier 1 capital to risk-weighted assets (at least) Tier 1 capital ratio, minimum leverage ratio Period of retained net profits Period Of Retained Net Profit Period of retained net profit. Approved dividend to Company by subsidiary Cash Dividends Paid to Parent Company Conservation buffer, actual Capital Required for Capital Adequacy Ratio, Capital Conservation Buffer Capital Required for Capital Adequacy Ratio, Capital Conservation Buffer Dividend declared per share Common Stock, Dividends, Per Share, Declared Stock repurchase, authorized amount Stock Repurchase Program, Authorized Amount Common shares repurchased Treasury Stock, Value, Acquired, Cost Method Common shares repurchased (in shares) Treasury Stock, Shares, Acquired Average price of common shares repurchased (in dollars per share) Treasury Stock Acquired, Average Cost Per Share Stock repurchased Stock repurchased (in shares) Stock repurchased, average price per share (in dollars per share) Sale of Stock, Price Per Share Remaining availability for future share repurchases Stock Repurchase Program, Remaining Authorized Repurchase Amount Schedule of Federal Home Loan Bank Advances, by Branch of FHLB Bank [Table] Schedule of Federal Home Loan Bank Advances, by Branch of FHLB Bank [Table] 1 Month FRC One-Month Fixed Rate Credit [Member] One-Month Fixed Rate Credit [Member] FHLB Maturity Date May 19, 2016 FHLB Maturity Date May 19, 2016 [Member] FHLB Maturity Date May 19, 2016 [Member] FHLB Maturity Date November 25, 2016 FHLB Maturity Date November 25, 2016 [Member] FHLB Maturity Date November 25, 2016 [Member] FHLB Maturity Date November 6, 2017 FHLB Maturity Date November 6, 2017 [Member] FHLB Maturity Date November 6, 2017 [Member] FHLB Maturity Date November 20, 2017 FHLB Maturity Date November 20, 2017 [Member] FHLB Maturity Date November 20, 2017 [Member] FHLB Maturity Date November 23, 2018 FHLB Maturity Date November 23, 2018 [Member] FHLB Maturity Date November 23, 2018 [Member] FHLB Maturity Date December 31, 2019 FHLB Maturity Date December 31, 2019 [Member] FHLB Maturity Date December 31, 2019 [Member] FHLB Maturity Date May 28, 2020 FHLB Maturity Date May 28, 2020 [Member] FHLB Maturity Date May 28, 2020 [Member] FHLB Maturity Date August, 11, 2020 FHLB Maturity Date August, 11, 2020 [Member] FHLB Maturity Date August, 11, 2020 [Member] FHLB Maturity Date February 10, 2026 FHLB Maturity Date February 10, 2026 [Member] FHLB Maturity Date February 10, 2026 [Member] Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items] Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items] Contractual Outstanding Amount Interest Rate Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Interest Rate at Period End Interest Rate, Basis Points Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Basis Spread on Interest Rate Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Basis Spread on Interest Rate Additional Paid in Capital Additional Paid-in Capital [Member] Retained Earnings Retained Earnings [Member] Treasury Stock Treasury Stock [Member] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Beginning balance (in shares) Beginning balance Dividends paid Dividends Other comprehensive income, net of tax expense Other Comprehensive Income (Loss), Net of Tax Stock-based compensation Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition Restricted stock grants (in shares) Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures Restricted stock grants Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures Nonqualified stock option exercise (in shares) Nonqualified stock option exercise Stock Issued During Period, Value, Stock Options Exercised Purchase of treasury stock (in shares) Purchase of treasury stock Conversion of shares (in shares) Stock Issued During Period, Shares, Conversion of Convertible Securities Conversion of shares Stock Issued During Period, Value, Conversion of Convertible Securities Ending balance (in shares) Ending balance Amount raised through private placements and an initial public offering during year of inception Proceeds from Issuance Initial Public Offering and Issuance of Private Placement Proceeds from Issuance Initial Public Offering and Issuance of Private Placement Number of depository institutions acquired since inception Number of Depository Institutions Acquired Since Inception Number of Depository Institutions Acquired Since Inception Total number of full service banking offices Number Of Full Service Banking Offices Number of full service banking offices. Statement of Comprehensive Income [Abstract] Other comprehensive income before tax: Other Comprehensive Income (Loss), before Tax, Portion Attributable to Parent [Abstract] Unrealized holding gains on investment securities available-for-sale Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, before Tax Reclassification adjustment for gains realized in net income on securities available-for-sale Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, before Tax Reclassification adjustment for losses amortized in net income on securities held-to-maturity Other Comprehensive Income (Loss), Reclassification Adjustment Amortized In Net Income Of Held To Maturity Securities Other comprehensive income loss reclassification adjustment amortized in net income of held to maturity securities. Unrealized holding gains on cash flow hedges Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, before Tax Reclassification adjustments for net gains included in net income on cash flow hedges Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, before Tax Other comprehensive income, before tax: Other Comprehensive Income (Loss), before Tax Tax effect Other Comprehensive Income (Loss), Tax Other comprehensive income, net of tax: Comprehensive income Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Proceeds from sale of securities Proceeds from Sale and Maturity of Marketable Securities Available-for-sale Securities, Gross Realized Gains Available-for-sale Securities, Gross Realized Gains Securities in portfolio Securities In Portfolio Securities in portfolio. Securities in portfolio in an unrealized loss position Securities In Portfolio In Unrealized Loss Position Securities in portfolio in unrealized loss position. Investment securities, carrying values Pledged Financial Instruments, Not Separately Reported, Securities Asset Class [Axis] Asset Class [Axis] Asset Class [Domain] Asset Class [Domain] Other real estate owned Oreo [Member] Oreo. Impaired loans Impaired Loans Commercial And Residential [Member] Impaired loans commercial and residential. Fair Value of Property Fair Value Of Property [Member] Fair value of property. Fair Value of Collateral Fair Value Of Collateral [Member] Fair value of collateral. Fair value Weighted Average Fair Value Inputs, Appraised Value Less Costs To Sell Fair value inputs appraised value less costs to sell. Schedule of Short-term Debt [Table] Schedule of Short-term Debt [Table] Short-term Debt, Type [Axis] Short-term Debt, Type [Axis] Short-term Debt, Type [Domain] Short-term Debt, Type [Domain] Letter of Credit Letter of Credit [Member] Short-term Debt [Line Items] Short-term Debt [Line Items] Securities sold under repurchase agreements Securities Sold under Agreements to Repurchase Available-for-sale securities pledged as collateral Available-for-sale Securities Pledged as Collateral Borrowings related to cash received from counterparties as mark-to-market exposure Federal Home Loan Bank Short Term Borrowing Pledged For Market Exposure Federal Home Loan Bank Short Term Borrowing Pledged For Market Exposure Amounts of eligible collateral provided for incremental borrowing Federal Home Loan Bank, Advances, General Debt Obligations, Maximum Amount Available Letter of credit used as collateral in lieu of pledging securities Federal Home Loan Bank Advances Letter Of Credit In Lieu Of Pledging Securities Federal home loan bank advances letter of credit in lieu of pledging securities.