CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid-in-Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss), net [Member]	Treasury Stock [Member]	Previously Reported [Member]	Previously Reported [Member] Common Stock [Member]	Previously Reported [Member] Additional Paid-in-Capital [Member]	Previously Reported [Member] Retained Earnings [Member]	Previously Reported [Member] Accumulated Other Comprehensive Income (Loss), net [Member]	Previously Reported [Member] Treasury Stock [Member]
Beginning balance at Dec. 31, 2018	$ 975,389	$ 113,915	$ 492,273	$ 511,409	$ (11,341)	$ (130,867)
Beginning balance, Shares Outstanding at Dec. 31, 2018		98,518,668
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	105,333			105,333
Total other comprehensive (loss) Income	16,920				16,920
Cash dividends declared	(39,394)			(39,394)
Treasury stock acquired	(6,259)					(6,259)
Treasury stock acquired		(486,849)
Treasury stock reissued	2,744		1,014	0		1,730
Treasury stock reissued, Shares Outstanding		205,021
Restricted stock, Shares Outstanding		75,000
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures	932	$ 0	450	0		482
Ending balance at Dec. 31, 2019	1,055,665	$ 113,915	493,737	577,348	5,579	(134,914)
Ending balance, Shares Outstanding at Dec. 31, 2019		98,311,840
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	73,447			73,447
Total other comprehensive (loss) Income	11,654				11,654
Cash dividends declared	(42,982)			(42,982)
Treasury stock acquired	(20,905)					(20,905)
Treasury stock acquired		(2,430,842)
Treasury stock reissued	1,817		459	0		1,358
Treasury stock reissued, Shares Outstanding		158,453
Restricted stock, Shares Outstanding		91,300
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures	1,120	$ 0	487	0		633
Ending balance at Dec. 31, 2020	$ 1,068,617						$ 1,068,617	$ 113,915	$ 494,683	$ 596,614	$ 17,233	$ (153,828)
Ending balance, Shares Outstanding at Dec. 31, 2020	96,130,751							96,130,751
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cumulative Effect Of New Accounting Principle In Period Of Adoption	$ (11,199)			(11,199)
Net Income	138,257			138,257
Total other comprehensive (loss) Income	(26,001)				(26,001)
Cash dividends declared	(43,611)			(43,611)
Treasury stock acquired	(31,301)					(31,301)
Treasury stock acquired		(2,195,110)
Treasury stock reissued	2,264		771	0		1,493
Treasury stock reissued, Shares Outstanding		173,907
Restricted stock, Shares Outstanding		123,604
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures	1,147	$ 0	667	0		480
Ending balance at Dec. 31, 2021	$ 1,109,372	$ 113,915	$ 496,121	$ 691,260	$ (8,768)	$ (183,156)
Ending balance, Shares Outstanding at Dec. 31, 2021	94,233,152	94,233,152