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FHLB Advances, Other Borrowings and Junior Subordinated Notes Subordinated notes payable and junior subordinated notes payable (Details) - USD ($) | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Subordinated Borrowing [Line Items] |  |
Junior subordinated notes and other borrowings | $ 429,229,000 | $ 329,429,000
Unamortized Debt Issuance Cost, Subordinated Notes | 343,000 |
Subordinated Debt |  |
Subordinated Borrowing [Line Items] |  |
Junior subordinated notes and other borrowings | 23,747,000 | $ 23,707,000
Maturity date August 15, 2029 | Subordinated Debt |  |
Subordinated Borrowing [Line Items] |  |
Junior subordinated notes and other borrowings | $ 15,000,000.0 |
Fixed rate | 5.50% |
Maturity date April 15, 2027 | Subordinated Debt |  |
Subordinated Borrowing [Line Items] |  |
Junior subordinated notes and other borrowings | $ 9,100,000 |
Fixed rate | 6.00% |

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