Condensed Consolidated Statements of Stockholders' Equity - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Loss	Treasury Stock
Beginning balance at Dec. 31, 2020		$ 1,751	$ 306,363	$ 2,395,395	$ (260,953)	$ (1,189,683)
Beginning balance (in shares) at Dec. 31, 2020		110,057
Increase (Decrease) in Stockholders' Equity
Net issuance of treasury stock for vested restricted stock units (in shares)		351
Repurchase of common stock (in shares)		0
Stock compensation expense			10,337
Net issuance of treasury stock for vested restricted stock units			(1,827)			(6,711)
Net income	$ 167,757			167,757
Dividends declared on common stock				(31,369)
Other comprehensive (loss) income					(2,480)
Repurchases of common stock						0
Ending balance at Jun. 30, 2021	$ 1,388,580	$ 1,751	314,873	2,531,783	(263,433)	(1,196,394)
Ending balance (in shares) at Jun. 30, 2021		110,408
Increase (Decrease) in Stockholders' Equity
Dividends declared on common stock per share (usd per share)	$ 0.28
Beginning balance at Mar. 31, 2021		$ 1,751	309,635	2,452,996	(291,806)	(1,196,221)
Beginning balance (in shares) at Mar. 31, 2021		110,386
Increase (Decrease) in Stockholders' Equity
Net issuance of treasury stock for vested restricted stock units (in shares)		22
Repurchase of common stock (in shares)		0
Stock compensation expense			5,327
Net issuance of treasury stock for vested restricted stock units			(89)			(173)
Net income	$ 94,476			94,476
Dividends declared on common stock				(15,689)
Other comprehensive (loss) income					28,373
Repurchases of common stock						0
Ending balance at Jun. 30, 2021	$ 1,388,580	$ 1,751	314,873	2,531,783	(263,433)	(1,196,394)
Ending balance (in shares) at Jun. 30, 2021		110,408
Increase (Decrease) in Stockholders' Equity
Dividends declared on common stock per share (usd per share)	$ 0.14
Beginning balance at Dec. 31, 2021	$ 1,562,696	$ 1,751	325,448	2,691,745	(259,828)	(1,196,420)
Beginning balance (in shares) at Dec. 31, 2021		110,410
Increase (Decrease) in Stockholders' Equity
Net issuance of treasury stock for vested restricted stock units (in shares)		455
Repurchase of common stock (in shares)		(650)
Stock compensation expense			8,870
Net issuance of treasury stock for vested restricted stock units			(2,441)			(10,593)
Net income	177,550			177,550
Dividends declared on common stock				(35,864)
Other comprehensive (loss) income					(48,388)
Repurchases of common stock						(26,367)
Ending balance at Jun. 30, 2022	$ 1,625,463	$ 1,751	331,877	2,833,431	(308,216)	(1,233,380)
Ending balance (in shares) at Jun. 30, 2022		110,215
Increase (Decrease) in Stockholders' Equity
Dividends declared on common stock per share (usd per share)	$ 0.32
Beginning balance at Mar. 31, 2022		$ 1,751	328,201	2,758,697	(244,642)	(1,205,768)
Beginning balance (in shares) at Mar. 31, 2022		110,800
Increase (Decrease) in Stockholders' Equity
Net issuance of treasury stock for vested restricted stock units (in shares)		65
Repurchase of common stock (in shares)		(650)
Stock compensation expense			3,991
Net issuance of treasury stock for vested restricted stock units			(315)			(1,245)
Net income	$ 92,675			92,675
Dividends declared on common stock				(17,941)
Other comprehensive (loss) income					(63,574)
Repurchases of common stock						(26,367)
Ending balance at Jun. 30, 2022	$ 1,625,463	$ 1,751	$ 331,877	$ 2,833,431	$ (308,216)	$ (1,233,380)
Ending balance (in shares) at Jun. 30, 2022		110,215
Increase (Decrease) in Stockholders' Equity
Dividends declared on common stock per share (usd per share)	$ 0.16