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			144,434			144,434
Cash dividends declared			(67,448)			(67,448)
Equity-based awards	$ 3	6,776	(449)		(2,845)	3,485
Equity-based awards (in shares)	239,910
Common stock repurchased					(31,928)	(31,928)
Common stock repurchased (in shares)	(1,132,311)
Other comprehensive loss, net of tax				(61,306)		(61,306)
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
Balance at Mar. 31, 2021	$ 1,405	2,517,048	497,418	(43,435)	(288,806)	2,683,630
Balance (in shares) at Mar. 31, 2021	129,749,890
Increase (Decrease) in Stockholders' Equity
Net income			86,741			86,741
Cash dividends declared			(33,637)			(33,637)
Equity-based awards		3,742	(11)		(471)	3,260
Equity-based awards (in shares)	69,828
Common stock repurchased					(22,386)	(22,386)
Common stock repurchased (in shares)	(799,847)
Other comprehensive loss, net of tax				13,733		13,733
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
Balance at Dec. 31, 2021	$ 1,406	2,527,663	604,534	(121,693)	(354,998)	$ 2,656,912
Balance (in shares) at Dec. 31, 2021	127,502,472					127,502,472
Increase (Decrease) in Stockholders' Equity
Net income			117,079			$ 117,079
Cash dividends declared			(66,363)			(66,363)
Equity-based awards	$ 3	5,744	(473)		(3,527)	1,747
Equity-based awards (in shares)	239,173
Common stock repurchased					(7,000)	(7,000)
Common stock repurchased (in shares)	(290,558)
Other comprehensive loss, net of tax				(449,764)		(449,764)
Balance at Jun. 30, 2022	$ 1,409	2,533,407	654,777	(571,457)	(365,525)	$ 2,252,611
Balance (in shares) at Jun. 30, 2022	127,451,087					127,451,087
Balance at Mar. 31, 2022	$ 1,409	2,530,795	628,642	(517,502)	(358,195)	$ 2,285,149
Balance (in shares) at Mar. 31, 2022	127,686,307
Increase (Decrease) in Stockholders' Equity
Net income			59,360			59,360
Cash dividends declared			(33,212)			(33,212)
Equity-based awards		2,612	(13)		(330)	2,269
Equity-based awards (in shares)	55,338
Common stock repurchased					(7,000)	(7,000)
Common stock repurchased (in shares)	(290,558)
Other comprehensive loss, net of tax				(53,955)		(53,955)
Balance at Jun. 30, 2022	$ 1,409	$ 2,533,407	$ 654,777	$ (571,457)	$ (365,525)	$ 2,252,611
Balance (in shares) at Jun. 30, 2022	127,451,087					127,451,087