Long-Term Borrowings and Subordinated Debt - Interest Expense and Weighted Average Interest Rates (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Debt Disclosure [Abstract]
Long-term borrowings	$ 22,430	$ 23,681	$ 50,868
Weighted average interest rate	1.94%	2.03%	2.60%
Interest expense	$ 458	$ 1,201	$ 1,831