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)		353
Repurchase of common stock (in shares)		0
Stock compensation expense			15,605
Net issuance of treasury stock for vested restricted stock units			(1,836)			(6,737)
Net income	$ 274,049			274,049
Dividends declared on common stock				(47,043)
Other comprehensive loss					(30,205)
Repurchases of common stock						0
Ending balance at Sep. 30, 2021	$ 1,456,706	$ 1,751	320,132	2,622,401	(291,158)	(1,196,420)
Ending balance (in shares) at Sep. 30, 2021		110,410
Increase (Decrease) in Stockholders' Equity
Dividends declared on common stock per share (usd per share)	$ 0.42
Beginning balance at Jun. 30, 2021		$ 1,751	314,873	2,531,783	(263,433)	(1,196,394)
Beginning balance (in shares) at Jun. 30, 2021		110,408
Increase (Decrease) in Stockholders' Equity
Net issuance of treasury stock for vested restricted stock units (in shares)		2
Repurchase of common stock (in shares)		0
Stock compensation expense			5,268
Net issuance of treasury stock for vested restricted stock units			(9)			(26)
Net income	$ 106,292			106,292
Dividends declared on common stock				(15,674)
Other comprehensive loss					(27,725)
Repurchases of common stock						0
Ending balance at Sep. 30, 2021	$ 1,456,706	$ 1,751	320,132	2,622,401	(291,158)	(1,196,420)
Ending balance (in shares) at Sep. 30, 2021		110,410
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			12,917
Net issuance of treasury stock for vested restricted stock units			(2,441)			(10,593)
Net income	316,253			316,253
Dividends declared on common stock				(53,706)
Other comprehensive loss					(105,528)
Repurchases of common stock						(26,367)
Ending balance at Sep. 30, 2022	$ 1,693,231	$ 1,751	335,924	2,954,292	(365,356)	(1,233,380)
Ending balance (in shares) at Sep. 30, 2022		110,215
Increase (Decrease) in Stockholders' Equity
Dividends declared on common stock per share (usd per share)	$ 0.48
Beginning balance at Jun. 30, 2022		$ 1,751	331,877	2,833,431	(308,216)	(1,233,380)
Beginning balance (in shares) at Jun. 30, 2022		110,215
Increase (Decrease) in Stockholders' Equity
Net issuance of treasury stock for vested restricted stock units (in shares)		0
Repurchase of common stock (in shares)		0
Stock compensation expense			4,047
Net issuance of treasury stock for vested restricted stock units			0			0
Net income	$ 138,703			138,703
Dividends declared on common stock				(17,842)
Other comprehensive loss					(57,140)
Repurchases of common stock						0
Ending balance at Sep. 30, 2022	$ 1,693,231	$ 1,751	$ 335,924	$ 2,954,292	$ (365,356)	$ (1,233,380)
Ending balance (in shares) at Sep. 30, 2022		110,215
Increase (Decrease) in Stockholders' Equity
Dividends declared on common stock per share (usd per share)	$ 0.16