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Recurring and Nonrecurring basis (Details) - USD ($) $ in Thousands | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Debt Securities, Trading | $ 2,200 |  | $ 1,500
Equity Securities, FV-NI | 21,261 |  | 19,477
Debt Securities, Available-for-sale | 426,424 |  | 442,752
Assets |  |  |
Total | 76,705 |  | 26,113
Derivative Liability, Fair Value, Gross Liability | 53,715 |  | 17,523
U.S. government agency securities |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Debt Securities, Available-for-sale | 33,115 |  | 32,038
Agency mortgage-backed securities |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Debt Securities, Available-for-sale | 247,000 |  | 220,105
Pooled trust preferred securities issued by banks and insurers |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Debt Securities, Available-for-sale | 1,114 |  | 1,329
Small Business Administration Pooled Securities [Member] |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Debt Securities, Available-for-sale | 54,795 |  | 51,927
Fair Value, Recurring [Member] |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Debt Securities, Trading | 2,179 |  | 1,504
Liabilities |  |  |
Total recurring fair value measurements | 507,633 |  | 478,951
Fair Value, Recurring [Member] | Equity Securities [Member] |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Equity Securities, FV-NI | 21,261 |  | 19,477
Fair Value, Recurring [Member] | U.S. government agency securities |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Debt Securities, Available-for-sale | 33,115 |  | 32,038
Fair Value, Recurring [Member] | Agency mortgage-backed securities |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Debt Securities, Available-for-sale | 247,000 |  | 220,105
Fair Value, Recurring [Member] | Agency collateralized mortgage obligations |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Debt Securities, Available-for-sale | 88,511 |  | 134,911
Fair Value, Recurring [Member] | State, county, and municipal securities |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Debt Securities, Available-for-sale | 1,396 |  | 1,735
Fair Value, Recurring [Member] | Single issuer trust preferred securities issued by banks and insurers |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Debt Securities, Available-for-sale | 493 |  | 707
Fair Value, Recurring [Member] | Pooled trust preferred securities issued by banks and insurers |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Debt Securities, Available-for-sale | 1,114 |  | 1,329
Fair Value, Recurring [Member] | Small Business Administration Pooled Securities [Member] |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Debt Securities, Available-for-sale | 54,795 |  | 51,927
Fair Value, Recurring [Member] | Loans held for sale |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Loans Held-for-sale, Fair Value Disclosure | 33,307 |  | 6,431
Fair Value, Recurring [Member] | Derivative instruments |  |  |
Assets |  |  |
Total | 78,385 |  | 26,310
Fair Value, Recurring [Member] | Derivative instruments |  |  |
Assets |  |  |
Financial and Nonfinancial Liabilities, Fair Value Disclosure | 53,923 |  | 17,523
Fair Value, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Debt Securities, Trading | 2,179 |  | 1,504
Liabilities |  |  |
Total recurring fair value measurements | 23,440 |  | 20,981
Fair Value, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Equity Securities [Member] |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Equity Securities, FV-NI | 21,261 |  | 19,477
Fair Value, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | State, county, and municipal securities |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Debt Securities, Available-for-sale |  |  | 0
Fair Value, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Small Business Administration Pooled Securities [Member] |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Debt Securities, Available-for-sale | 0 |  | 0
Fair Value, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] |  |  |
Liabilities |  |  |
Total recurring fair value measurements | 483,079 |  | 456,641
Fair Value, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | Equity Securities [Member] |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Equity Securities, FV-NI | 0 |  | 0
Fair Value, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | U.S. government agency securities |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Debt Securities, Available-for-sale | 33,115 |  | 32,038
Fair Value, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | Agency mortgage-backed securities |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Debt Securities, Available-for-sale | 247,000 |  | 220,105
Fair Value, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | Agency collateralized mortgage obligations |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Debt Securities, Available-for-sale | 88,511 |  | 134,911
Fair Value, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | State, county, and municipal securities |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Debt Securities, Available-for-sale | 1,396 |  | 1,735
Fair Value, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | Single issuer trust preferred securities issued by banks and insurers |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Debt Securities, Available-for-sale | 493 |  | 707
Fair Value, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | Small Business Administration Pooled Securities [Member] |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Debt Securities, Available-for-sale | 54,795 |  | 51,927
Fair Value, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | Loans held for sale |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Loans Held-for-sale, Fair Value Disclosure | 33,307 |  | 6,431
Fair Value, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | Derivative instruments |  |  |
Assets |  |  |
Total | 78,385 | [1] | 26,310
Fair Value, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | Derivative instruments |  |  |
Assets |  |  |
Financial and Nonfinancial Liabilities, Fair Value Disclosure |  |  | 17,523
Fair Value, Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member] |  |  |
Liabilities |  |  |
Total recurring fair value measurements | 1,114 |  | 1,329
Fair Value, Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | Equity Securities [Member] |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Equity Securities, FV-NI | 0 |  | 0
Fair Value, Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | State, county, and municipal securities |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Debt Securities, Available-for-sale |  |  | 0
Fair Value, Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | Pooled trust preferred securities issued by banks and insurers |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Debt Securities, Available-for-sale | 1,114 |  | 1,329
Fair Value, Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | Small Business Administration Pooled Securities [Member] |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Debt Securities, Available-for-sale | 0 |  | 0
Fair Value, Nonrecurring [Member] |  |  |
Assets |  |  |
Assets And Liabilities Fair Value Disclosure Nonrecurring | 25,515 |  | 29,109
Fair Value, Nonrecurring [Member] | Collateral dependent impaired loans |  |  |
Liabilities |  |  |
Assets, Fair Value Disclosure | 25,515 |  | 29,109
Fair Value, Nonrecurring [Member] | Significant Unobservable Inputs (Level 3) [Member] |  |  |
Assets |  |  |
Assets And Liabilities Fair Value Disclosure Nonrecurring | 25,515 |  | 29,109
Fair Value, Nonrecurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | Collateral dependent impaired loans |  |  |
Liabilities |  |  |
Assets, Fair Value Disclosure | $ 25,515 |  | $ 29,109
[1] | All asset derivatives are located in other assets on the balance sheet

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