Stockholders' Equity (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 20, 2021
Stockholders' Equity [Abstract]
Unrecognized prior service cost and net actuarial (losses) on pension plans	$ (26,435)	$ (16,269)	$ (20,134)
Unrealized (losses) on derivatives (cash flow hedges)	0	0	(16)
Unrealized net holding (losses) gains on AFS securities	(163,599)	(7,075)	20,567
AOCI	$ (190,034)	$ (23,344)	$ 417
Preceding period of retained net profits for approval of Office of Comptroller of the Currency	2 years
Statutory amount available for dividend payments	$ 145,300
Stock Repurchase Program [Abstract]
Purchase of common stock (in shares)	400,000	604,637	263,507
Purchase of common stock value	$ 14,713	$ 21,714	$ 7,980
Average price per share (in dollars per share)	$ 36.78
Number of shares authorized under stock repurchase program (in shares)				2,000,000
Number of shares available for repurchase under stock repurchase program (in shares)	1,600,000