Borrowed Funds - Debt Disclosure by Year (Details) - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2022	Dec. 31, 2021
Debt Disclosure [Abstract]
Securities sold under repurchase agreements, maximum balance	$ 120,188,000	$ 132,005,000
FHLB line of credit, maximum balance	0	0
FHLB advances, maximum balance	488,996,000	941,939,000
Securities sold under repurchase agreements, average balance	117,615,000	116,158,000
FHLB line of credit, average balance	0	205,000
FHLB advances, average balance	$ 432,064,000	$ 673,014,000
Securities sold under repurchase agreements, weighted average interest rate	0.30%	0.07%
FHLB line of credit, weighted average interest rate	0.00%	0.34%
FHLB advances, weighted average interest rate	0.99%	1.27%