Condensed Consolidated Statements of Changes In Shareholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	Common Stock	Retained Earnings (Accumulated Deficit)	Accumulated Other Comprehensive Income (Loss)
Beginning balance (in shares) at Dec. 31, 2020		220,226,335
Beginning balance at Dec. 31, 2020	$ 2,704,577	$ 3,514,599	$ (932,767)	$ 122,745
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	107,737		107,737
Other comprehensive income (loss), net of tax	(84,613)			(84,613)
Stock-based compensation	2,964	$ 2,964
Stock repurchased and retired (in shares)		(143,832)
Stock repurchased and retired	(2,315)	$ (2,315)
Issuances of common stock under stock plans (in shares)		408,700
Issuances of common stock under stock plans	0	$ 0
Cash dividends on common stock	(46,481)		(46,481)
Ending balance (in shares) at Mar. 31, 2021		220,491,203
Ending balance at Mar. 31, 2021	2,681,869	$ 3,515,248	(871,511)	38,132
Beginning balance (in shares) at Dec. 31, 2020		220,226,335
Beginning balance at Dec. 31, 2020	2,704,577	$ 3,514,599	(932,767)	122,745
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	223,880
Other comprehensive income (loss), net of tax	(72,116)
Ending balance (in shares) at Jun. 30, 2021		220,626,452
Ending balance at Jun. 30, 2021	2,766,316	$ 3,517,641	(801,954)	50,629
Beginning balance (in shares) at Mar. 31, 2021		220,491,203
Beginning balance at Mar. 31, 2021	2,681,869	$ 3,515,248	(871,511)	38,132
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	116,143		116,143
Other comprehensive income (loss), net of tax	12,497			12,497
Stock-based compensation	2,377	$ 2,377
Stock repurchased and retired (in shares)		(957)
Stock repurchased and retired	(18)	$ (18)
Issuances of common stock under stock plans (in shares)		136,206
Issuances of common stock under stock plans	34	$ 34
Cash dividends on common stock	(46,586)		(46,586)
Ending balance (in shares) at Jun. 30, 2021		220,626,452
Ending balance at Jun. 30, 2021	2,766,316	$ 3,517,641	(801,954)	50,629
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	108,066		108,066
Other comprehensive income (loss), net of tax	(30,420)			(30,420)
Stock-based compensation	2,765	$ 2,765
Stock repurchased and retired (in shares)		(4,011,808)
Stock repurchased and retired	(78,321)	$ (78,321)
Issuances of common stock under stock plans (in shares)		7,159
Issuances of common stock under stock plans	0	$ 0
Cash dividends on common stock	(46,027)		(46,027)
Ending balance (in shares) at Sep. 30, 2021		216,621,803
Ending balance at Sep. 30, 2021	2,722,379	$ 3,442,085	(739,915)	20,209
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	88,354		88,354
Other comprehensive income (loss), net of tax	(18,450)			(18,450)
Stock-based compensation	2,800	$ 2,800
Stock repurchased and retired (in shares)		(1,790)
Stock repurchased and retired	(36)	$ (36)
Issuances of common stock under stock plans (in shares)		5,493
Issuances of common stock under stock plans	0	$ 0
Cash dividends on common stock	$ (45,777)		(45,777)
Ending balance (in shares) at Dec. 31, 2021	216,625,506	216,625,506
Ending balance at Dec. 31, 2021	$ 2,749,270	$ 3,444,849	(697,338)	1,759
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	91,157		91,157
Other comprehensive income (loss), net of tax	(185,515)			(185,515)
Stock-based compensation	2,454	$ 2,454
Stock repurchased and retired (in shares)		(194,792)
Stock repurchased and retired	(4,037)	$ (4,037)
Issuances of common stock under stock plans (in shares)		536,157
Issuances of common stock under stock plans	0	$ 0
Cash dividends on common stock	(45,731)		(45,731)
Ending balance (in shares) at Mar. 31, 2022		216,966,871
Ending balance at Mar. 31, 2022	$ 2,607,598	$ 3,443,266	(651,912)	(183,756)
Beginning balance (in shares) at Dec. 31, 2021	216,625,506	216,625,506
Beginning balance at Dec. 31, 2021	$ 2,749,270	$ 3,444,849	(697,338)	1,759
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	169,748
Other comprehensive income (loss), net of tax	$ (309,906)
Ending balance (in shares) at Jun. 30, 2022	217,048,967	217,048,967
Ending balance at Jun. 30, 2022	$ 2,518,276	$ 3,445,531	(619,108)	(308,147)
Beginning balance (in shares) at Mar. 31, 2022		216,966,871
Beginning balance at Mar. 31, 2022	2,607,598	$ 3,443,266	(651,912)	(183,756)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	78,591		78,591
Other comprehensive income (loss), net of tax	(124,391)			(124,391)
Stock-based compensation	2,283	$ 2,283
Stock repurchased and retired (in shares)		(4,267)
Stock repurchased and retired	(72)	$ (72)
Issuances of common stock under stock plans (in shares)		86,363
Issuances of common stock under stock plans	54	$ 54
Cash dividends on common stock	$ (45,787)		(45,787)
Ending balance (in shares) at Jun. 30, 2022	217,048,967	217,048,967
Ending balance at Jun. 30, 2022	$ 2,518,276	$ 3,445,531	$ (619,108)	$ (308,147)