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Borrowings and Borrowings Availability - Schedule of Borrowings (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019
Debt Instrument [Line Items] |  |
Total borrowings, gross | $ 64,409 | $ 303,430
Weighted average interest rate | 2.22% | 2.68%
Unamortized discount on acquired borrowings | $ (2,580) | $ (2,759)
Total borrowings | 61,829 | 300,671
FHLB Term Note Due January 30, 2020 |  |
Debt Instrument [Line Items] |  |
Total borrowings, gross |  | $ 100,000
Weighted average interest rate |  | 1.70%
FHLB Term Note Due January 31, 2020 |  |
Debt Instrument [Line Items] |  |
Total borrowings, gross |  | $ 68,000
Weighted average interest rate |  | 1.70%
FHLB Term Note Due January 31, 2020 |  |
Debt Instrument [Line Items] |  |
Total borrowings, gross |  | $ 30,000
Weighted average interest rate |  | 1.70%
FHLB Term Note Due May 29, 2020 |  |
Debt Instrument [Line Items] |  |
Total borrowings, gross |  | $ 40,000
Weighted average interest rate |  | 1.62%
FHLB Principal Reducing Credit Due July 24, 2023 |  |
Debt Instrument [Line Items] |  |
Total borrowings, gross | $ 124 | $ 168
Weighted average interest rate | 1.00% | 1.00%
FHLB Principal Reducing Credit Due December 22, 2023 |  |
Debt Instrument [Line Items] |  |
Total borrowings, gross | $ 991 | $ 1,029
Weighted average interest rate | 1.25% | 1.25%
FHLB Principal Reducing Credit Due January 15, 2026 |  |
Debt Instrument [Line Items] |  |
Total borrowings, gross | $ 5,500 | $ 6,500
Weighted average interest rate | 1.98% | 1.98%
FHLB Principal Reducing Credit Due June 26, 2028 |  |
Debt Instrument [Line Items] |  |
Total borrowings, gross | $ 235 | $ 245
Weighted average interest rate | 0.25% | 0.25%
FHLB Principal Reducing Credit Due July 17, 2028 |  |
Debt Instrument [Line Items] |  |
Total borrowings, gross | $ 49 | $ 55
Weighted average interest rate | 0.00% | 0.00%
FHLB Principal Reducing Credit Due August 18, 2028 |  |
Debt Instrument [Line Items] |  |
Total borrowings, gross | $ 174 | $ 181
Weighted average interest rate | 1.00% | 1.00%
FHLB Principal Reducing Credit Due August 22, 2028 |  |
Debt Instrument [Line Items] |  |
Total borrowings, gross | $ 174 | $ 181
Weighted average interest rate | 1.00% | 1.00%
FHLB Principal Reducing Credit Due December 20, 2028 |  |
Debt Instrument [Line Items] |  |
Total borrowings, gross | $ 355 | $ 367
Weighted average interest rate | 0.50% | 0.50%
Trust Preferred Securities Due January 23, 2034 |  |
Debt Instrument [Line Items] |  |
Total borrowings, gross | $ 20,620 | $ 20,620
Weighted average interest rate | 2.91% | 4.61%
Trust Preferred Securities Due January 23, 2034 | Three-month LIBOR |  |
Debt Instrument [Line Items] |  |
Basis spread on variable rate (as a percent) | 2.70% | 2.70%
Trust Preferred Securities Due June 15, 2036 |  |
Debt Instrument [Line Items] |  |
Total borrowings, gross | $ 25,774 | $ 25,774
Weighted average interest rate | 1.61% | 3.28%
Trust Preferred Securities Due June 15, 2036 | Three-month LIBOR |  |
Debt Instrument [Line Items] |  |
Basis spread on variable rate (as a percent) | 1.39% | 1.39%
Trust Preferred Securities Due January 7, 2035 |  |
Debt Instrument [Line Items] |  |
Total borrowings, gross | $ 10,310 | $ 10,310
Weighted average interest rate | 2.24% | 3.99%
Trust Preferred Securities Due January 7, 2035 | Three-month LIBOR |  |
Debt Instrument [Line Items] |  |
Basis spread on variable rate (as a percent) | 2.00% | 2.00%
Other Borrowing |  |
Debt Instrument [Line Items] |  |
Total borrowings, gross | $ 103 |

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