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Borrowings - Long-term Borrowings (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Long-term borrowings
Early debt repayment charges			$ (2,197)
2028 Subordinated Notes | Subordinated Notes
Long-term borrowings
Aggregate principal amount	$ 4,000
Fixed rate (as a percent)	6.99%
2030 Subordinated Notes | Subordinated Notes
Long-term borrowings
Aggregate principal amount	$ 20,000
2030 Subordinated Notes | Subordinated Notes | Until September 2025
Long-term borrowings
Fixed rate (as a percent)	4.875%
2030 Subordinated Notes | Subordinated Notes | Thereafter | Three month SOFR
Long-term borrowings
Variable rate, basis spread (as a percent)	4.755%
Revolving bank line of credit | Subordinated Notes
Long-term borrowings
Revolving bank line of credit terminated		$ 50,000
Repayment of revolving bank line of credit			75,030
Repayment of FHLB advances			44,500
Early debt repayment charges			$ 2,200

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