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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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