Fair Value - Securities Available for Sale Measured at Fair Value on Recurring Basis Using Significant Unobservable Inputs (Level 3) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
State & political subdivisions
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	$ 64	$ 0
Purchases	0	422
Total gains or (losses):
Included in other comprehensive income (loss)	0	0
Settlements	(64)
Transfers out of Level 3	0
Ending Balance	0	64
Transfers out of Level 3		(358)
Residential & multi-family mortgage
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	0	2,795
Purchases		0
Total gains or (losses):
Included in other comprehensive income (loss)		0
Ending Balance		0
Transfers out of Level 3		(2,795)
Corporate notes and bonds
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	0
Purchases	8,250
Total gains or (losses):
Included in other comprehensive income (loss)	0
Settlements	0
Transfers out of Level 3	(8,250)
Ending Balance	0	0
Transfers out of Level 3	$ 8,300	358
Multi-family mortgage		$ 2,800