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FHLB Advances, Other Borrowings and Junior Subordinated Notes Subordinated notes payable and junior subordinated notes payable (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Subordinated Borrowing [Line Items] |  |  |
Borrowed funds | $ 308,977,000 | $ 217,917,000 |
Repayment of subordinated notes payable | 0 | 7,875,000 | $ 0
Unamortized Debt Issuance Cost, Subordinated Notes | 321,000 |  |
Subordinated Debt |  |  |
Subordinated Borrowing [Line Items] |  |  |
Borrowed funds | 23,769,000 | $ 23,713,000 |
Maturity date September 21, 2024 | Subordinated Debt |  |  |
Subordinated Borrowing [Line Items] |  |  |
Borrowed funds | $ 15,000,000 |  |
Fixed rate | 6.50% |  |
Maturity date April 15, 2027 | Subordinated Debt |  |  |
Subordinated Borrowing [Line Items] |  |  |
Borrowed funds | $ 9,100,000 |  |
Fixed rate | 6.00% |  |

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