Borrowings - Summary of Borrowings By Type (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Schedule of Borrowings [Line Items]
Balance at end of period	$ 14,101	$ 17,906
Federal Home Loan Bank Advances [Member]
Schedule of Borrowings [Line Items]
Balance at end of period	$ 95,000	$ 110,000
Weighted average interest rate	1.34%	1.42%
Subordinated Debt [Member]
Schedule of Borrowings [Line Items]
Balance at end of period	$ 98,797	$ 183,515
Weighted average interest rate	5.31%	4.96%
Customer Repurchase Agreements [Member]
Schedule of Borrowings [Line Items]
Balance at end of period	$ 14,101	$ 17,906
Weighted average interest rate	0.05%	0.05%