Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	Common Stock Outstanding	Common Stock	Value of Shares Held in Rabbi Trust at Cost	Deferred Compensation and Other Retirement Benefit Obligations	Additional Paid in Capital		Retained Earnings	Accumulated Other Comprehensive Income/(Loss)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common Stock, Shares, Outstanding		42,873,187
Net income	$ 47,770							$ 47,770
Other comprehensive income	$ (4,511)								$ (4,511)
Cash dividends declared per common share (in dollars per share)	$ 0.57
Common dividend declared	$ (24,197)							(24,197)
Stock based compensation	1,300					$ 1,300
Restricted stock awards issued, net of awards surrendered		101,245
Restricted stock awards issued, net of awards surrendered	(766)		$ 0			(766)
Shares issued under direct stock purchase plan		10,291
Shares issued under direct stock purchase plan	658		0			658
Stock Repurchased During Period, Shares		(532,266)
Stock Repurchased During Period, Value	(31,297)		(5)			(31,292)	[1]
Increase (Decrease) in Deferred Compensation and Other Retirement Benefits				$ (105)	$ 105
Increase (Decrease) in Deferred Compensation	0
Period End Balance at Mar. 31, 2024	2,884,208		422	(3,403)	3,403	1,902,063		1,101,061	(119,338)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common Stock, Shares, Outstanding		42,452,457
Sales and Excise Tax Payable	$ 311
Common Stock, Shares, Outstanding	42,500,611	42,500,611
Net income	$ 44,424							44,424
Other comprehensive income	$ 19,805								19,805
Cash dividends declared per common share (in dollars per share)	$ 0.59
Common dividend declared	$ (25,140)							(25,140)
Stock based compensation	1,896					1,896
Restricted stock awards issued, net of awards surrendered		100,430
Restricted stock awards issued, net of awards surrendered	(1,308)		1			(1,309)
Shares issued under direct stock purchase plan		9,230
Shares issued under direct stock purchase plan	595					595
Increase (Decrease) in Deferred Compensation and Other Retirement Benefits				(141)	141
Increase (Decrease) in Deferred Compensation	0
Period End Balance at Mar. 31, 2025	$ 3,033,392		$ 424	$ (3,524)	$ 3,524	$ 1,911,162		$ 1,192,008	$ (70,202)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common Stock, Shares, Outstanding	42,610,271	42,610,271

[1] Inclusive of $311,000 impact of excise tax attributable to shares repurchased under a share repurchase program during the three months ended March 31, 2024