CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Unaudited) - USD ($) $ in Thousands	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated other comprehensive loss	Treasury Stock	Total
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
Treasury Stock, Value, Beginning Balance at Dec. 31, 2021					$ (354,998)
Increase (Decrease) in Stockholders' Equity
Net Income (Loss)			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
Treasury Stock, Value, Ending Balance at Sep. 30, 2022					(368,037)
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
Treasury Stock, Value, Beginning Balance at Jun. 30, 2022					(365,525)
Increase (Decrease) in Stockholders' Equity
Net Income (Loss)			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
Treasury Stock, Value, Ending Balance at Sep. 30, 2022					(368,037)
Balance at Dec. 31, 2022	$ 1,410	2,538,336	736,544	(639,254)		$ 2,269,005
Balance (in shares) at Dec. 31, 2022	127,363,327					127,363,327
Treasury Stock, Value, Beginning Balance at Dec. 31, 2022					(368,031)	$ 368,031
Increase (Decrease) in Stockholders' Equity
Net Income (Loss)			187,481			187,481
Cash dividends declared			(99,468)			(99,468)
Common stock issued under Employee Stock Purchase Plan		163				163
Common stock issued under Employee Stock Purchase Plan (in shares)	9,548
Equity-based awards	$ 3	7,160	(662)		(3,196)	3,305
Equity-based awards (in shares)	237,059
Other comprehensive loss, net of tax				(9,477)		(9,477)
Balance at Sep. 30, 2023	$ 1,413	2,545,659	823,895	(648,731)		$ 2,351,009
Balance (in shares) at Sep. 30, 2023	127,609,934					127,609,934
Treasury Stock, Value, Ending Balance at Sep. 30, 2023					(371,227)	$ 371,227
Balance at Jun. 30, 2023	$ 1,413	2,543,226	799,045	(612,736)		2,359,738
Balance (in shares) at Jun. 30, 2023	127,608,037
Treasury Stock, Value, Beginning Balance at Jun. 30, 2023					(371,210)
Increase (Decrease) in Stockholders' Equity
Net Income (Loss)			58,221			58,221
Cash dividends declared			(33,178)			(33,178)
Equity-based awards		2,433	(193)		(17)	2,223
Equity-based awards (in shares)	1,897
Other comprehensive loss, net of tax				(35,995)		(35,995)
Balance at Sep. 30, 2023	$ 1,413	$ 2,545,659	$ 823,895	$ (648,731)		$ 2,351,009
Balance (in shares) at Sep. 30, 2023	127,609,934					127,609,934
Treasury Stock, Value, Ending Balance at Sep. 30, 2023					$ (371,227)	$ 371,227