Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Pre-Tax Amount
Change in net unrealized (losses) gains on debt securities available-for-sale	$ (48,261)	$ (9,712)
Change in interest rate swap	(2,601)	0
Adjustment to funded status of employee benefit plans	(12)	(343)
Other Comprehensive Loss	(50,874)	(10,055)
Tax Benefit (Expense)
Change in net unrealized (losses) gains on debt securities available-for-sale	10,332	2,072
Change in interest rate swap	557	0
Adjustment to funded status of employee benefit plans	32	73
Other Comprehensive Loss	10,921	2,145
Net of Tax Amount
Change in net unrealized (losses) gains on debt securities available-for-sale	(37,929)	(7,640)
Change in interest rate swap	(2,044)	0
Adjustment to funded status of employee benefit plans	20	(270)
Other Comprehensive Loss	$ (39,953)	$ (7,910)