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FHLB Advances, Other Borrowings and Junior Subordinated Notes Payable (Composition of Borrowed Funds) (Details) - USD ($) $ in Thousands | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2020 | Dec. 31, 2019
Composition of Borrowed Funds |  |
Borrowed funds | $ 493,575 | $ 329,429
Borrowed funds, average balance | $ 423,135 | $ 321,740
Borrowed funds, interest rate during period | 1.95% | 2.87%
Long-term borrowings |  |
Composition of Borrowed Funds |  |
Borrowed funds | $ 262,575 | $ 210,929
Short-term borrowings |  |
Composition of Borrowed Funds |  |
Borrowed funds | 231,000 | 118,500
Federal funds purchased |  |
Composition of Borrowed Funds |  |
Borrowed funds | 0 | 0
Borrowed funds, average balance | $ 95 | $ 59
Borrowed funds, interest rate during period | 0.69% | 2.45%
Federal Reserve PPPLF |  |
Composition of Borrowed Funds |  |
Borrowed funds | $ 29,605 | $ 0
Borrowed funds, average balance | $ 16,855 | $ 0
Borrowed funds, interest rate during period | 0.35% | 0.00%
FHLB advances |  |
Composition of Borrowed Funds |  |
Borrowed funds | $ 429,500 | $ 295,000
Borrowed funds, average balance | $ 371,738 | $ 286,464
Borrowed funds, interest rate during period | 1.51% | 2.17%
Other borrowings |  |
Composition of Borrowed Funds |  |
Borrowed funds | $ 675 | $ 675
Borrowed funds, average balance | $ 675 | $ 675
Borrowed funds, interest rate during period | 8.12% | 8.11%
Subordinated notes payable(1) |  |
Composition of Borrowed Funds |  |
Borrowed funds | $ 23,737 | $ 23,707
Borrowed funds, average balance | $ 23,720 | $ 24,502
Borrowed funds, interest rate during period | 5.95% | 7.45%
Junior subordinated notes |  |
Composition of Borrowed Funds |  |
Borrowed funds | $ 10,058 | $ 10,047
Borrowed funds, average balance | $ 10,052 | $ 10,040
Borrowed funds, interest rate during period | 11.08% | 11.08%

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