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FHLB Advances, Other Borrowings and Junior Subordinated Notes (Composition of Borrowed Funds) (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Apr. 28, 2020
Composition of Borrowed Funds [Line Items] |  |  |
Junior subordinated notes and other borrowings | $ 429,229 | $ 329,429 |
Borrowed Funds, Average Balance | $ 429,624 | $ 321,740 |
Borrowed funds, interest rate during period | 1.91% | 2.87% |
Federal funds purchased |  |  |
Composition of Borrowed Funds [Line Items] |  |  |
Junior subordinated notes and other borrowings | $ 0 | $ 0 |
Borrowed Funds, Average Balance | $ 71 | $ 59 |
Borrowed funds, interest rate during period | 0.69% | 2.45% |
Federal Reserve PPPLF |  |  |
Composition of Borrowed Funds [Line Items] |  |  |
Junior subordinated notes and other borrowings | $ 0 | $ 0 | $ 29,600
Borrowed Funds, Average Balance | $ 15,207 | $ 0 |
Borrowed funds, interest rate during period | 0.35% | 0.00% |
FHLB advances |  |  |
Composition of Borrowed Funds [Line Items] |  |  |
Junior subordinated notes and other borrowings | $ 394,500 | $ 295,000 |
Borrowed Funds, Average Balance | $ 379,891 | $ 286,464 |
Borrowed funds, interest rate during period | 1.45% | 2.17% |
Other borrowings |  |  |
Composition of Borrowed Funds [Line Items] |  |  |
Junior subordinated notes and other borrowings | $ 920 | $ 675 |
Borrowed Funds, Average Balance | $ 676 | $ 675 |
Borrowed funds, interest rate during period | 12.60% | 8.11% |
Subordinated notes payable(1) |  |  |
Composition of Borrowed Funds [Line Items] |  |  |
Junior subordinated notes and other borrowings | $ 23,747 | $ 23,707 |
Borrowed Funds, Average Balance | $ 23,725 | $ 24,502 |
Borrowed funds, interest rate during period | 5.95% | 7.45% |
Junior subordinated notes |  |  |
Composition of Borrowed Funds [Line Items] |  |  |
Junior subordinated notes and other borrowings | $ 10,062 | $ 10,047 |
Borrowed Funds, Average Balance | $ 10,054 | $ 10,040 |
Borrowed funds, interest rate during period | 11.09% | 11.08% |

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