CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Treasury Stock	Total
Balance at Dec. 31, 2020	$ 1,402	$ 2,514,014	$ 473,974	$ 31,604	$ (276,890)	$ 2,744,104
Balance (in shares) at Dec. 31, 2020	129,912,272
Increase (Decrease) in Stockholders' Equity
Net income			208,713			208,713
Cash dividends declared			(100,889)			(100,889)
Equity-based awards	$ 4	10,154	(704)		(3,086)	6,368
Equity-based awards (in shares)	252,593
Common stock repurchased					(53,495)	(53,495)
Common stock repurchased (in shares)	(1,909,295)
Other comprehensive loss, net of tax				(93,067)		(93,067)
Balance at Sep. 30, 2021	$ 1,406	2,524,168	581,094	(61,463)	(333,471)	2,711,734
Balance (in shares) at Sep. 30, 2021	128,255,570
Balance at Jun. 30, 2021	$ 1,405	2,520,790	550,511	(29,702)	(311,663)	2,731,341
Balance (in shares) at Jun. 30, 2021	129,019,871
Increase (Decrease) in Stockholders' Equity
Net income			64,279			64,279
Cash dividends declared			(33,441)			(33,441)
Equity-based awards	$ 1	3,378	(255)		(241)	2,883
Equity-based awards (in shares)	12,683
Common stock repurchased					(21,567)	(21,567)
Common stock repurchased (in shares)	(776,984)
Other comprehensive loss, net of tax				(31,761)		(31,761)
Balance at Sep. 30, 2021	$ 1,406	2,524,168	581,094	(61,463)	(333,471)	2,711,734
Balance (in shares) at Sep. 30, 2021	128,255,570
Increase (Decrease) in Stockholders' Equity
Treasury Stock Balance					(354,998)	354,998
Balance at Dec. 31, 2021	$ 1,406	2,527,663	604,534	(121,693)		$ 2,656,912
Balance (in shares) at Dec. 31, 2021	127,502,472					127,502,472
Increase (Decrease) in Stockholders' Equity
Net income			186,097			$ 186,097
Cash dividends declared			(99,475)			(99,475)
Common stock issued under Employee Stock Purchase Plan		224				224
Common stock issued under Employee Stock Purchase Plan (in shares)	10,411
Equity-based awards	$ 4	7,714	(723)		(3,561)	3,434
Equity-based awards (in shares)	241,982
Common stock repurchased					(9,478)	(9,478)
Common stock repurchased (in shares)	(397,185)
Other comprehensive loss, net of tax				(537,063)		(537,063)
Balance at Sep. 30, 2022	$ 1,410	2,535,601	690,433	(658,756)		$ 2,200,651
Balance (in shares) at Sep. 30, 2022	127,357,680					127,357,680
Increase (Decrease) in Stockholders' Equity
Treasury Stock Balance					(365,525)
Balance at Jun. 30, 2022	$ 1,409	2,533,407	654,777	(571,457)		$ 2,252,611
Balance (in shares) at Jun. 30, 2022	127,451,087
Increase (Decrease) in Stockholders' Equity
Net income			69,018			69,018
Cash dividends declared			(33,112)			(33,112)
Common stock issued under Employee Stock Purchase Plan		224				224
Common stock issued under Employee Stock Purchase Plan (in shares)	10,411
Equity-based awards	$ 1	1,970	(250)		(34)	1,687
Equity-based awards (in shares)	2,809
Common stock repurchased					(2,478)	(2,478)
Common stock repurchased (in shares)	(106,627)
Other comprehensive loss, net of tax				(87,299)		(87,299)
Balance at Sep. 30, 2022	$ 1,410	$ 2,535,601	$ 690,433	$ (658,756)		$ 2,200,651
Balance (in shares) at Sep. 30, 2022	127,357,680					127,357,680
Increase (Decrease) in Stockholders' Equity
Treasury Stock Balance					$ (368,037)	$ 368,037