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, 2022		129,320,962
Beginning balance at Dec. 31, 2022	$ 2,479,826	$ 3,450,493	$ (543,803)	$ (426,864)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(14,038)		(14,038)
Other comprehensive income (loss), net of tax	126,730			126,730
Stock issued in connection with the Merger	2,337,632	2,337,632
Stock-based compensation	5,644	$ 5,644
Stock repurchased and retired (in shares)		(215,229)
Stock repurchased and retired	(5,216)	$ (5,216)
Issuances of common stock under stock plans (in shares)		460,399
Issuances of common stock under stock plans	0	$ 0
Stock related to Merger (in shares)		78,863,112
Cash dividends on common stock	(45,855)		(45,855)
Ending balance (in shares) at Mar. 31, 2023		208,429,244
Ending balance at Mar. 31, 2023	4,884,723	$ 5,788,553	(603,696)	(300,134)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	133,377		133,377
Other comprehensive income (loss), net of tax	(118,628)			(118,628)
Stock issued in connection with the Merger	1,646
Stock-based compensation	3,335	$ 3,335
Stock repurchased and retired (in shares)		(32,727)
Stock repurchased and retired	(742)	$ (742)
Issuances of common stock under stock plans (in shares)		117,122
Issuances of common stock under stock plans	0	$ 0
Cash dividends on common stock	(75,523)		(75,523)
Ending balance (in shares) at Jun. 30, 2023		208,513,639
Ending balance at Jun. 30, 2023	4,828,188	$ 5,792,792	(545,842)	(418,762)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	135,845		135,845
Other comprehensive income (loss), net of tax	(261,667)			(261,667)
Stock-based compensation	4,338	$ 4,338
Stock repurchased and retired (in shares)		(7,072)
Stock repurchased and retired	(148)	$ (148)
Issuances of common stock under stock plans (in shares)		10,472
Issuances of common stock under stock plans	0	$ 0
Issuances of common stock under the employee stock purchase plan (In Shares)		58,440
Issuances of common stock under the employee stock purchase plan	1,185	$ 1,185
Cash dividends on common stock	(75,579)		(75,579)
Ending balance (in shares) at Sep. 30, 2023		208,575,479
Ending balance at Sep. 30, 2023	4,632,162	$ 5,798,167	(485,576)	(680,429)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	93,531		93,531
Other comprehensive income (loss), net of tax	340,287			340,287
Stock-based compensation	4,756	$ 4,756
Stock repurchased and retired (in shares)		(8,807)
Stock repurchased and retired	(176)	$ (176)
Issuances of common stock under stock plans (in shares)		17,995
Issuances of common stock under stock plans	0	$ 0
Cash dividends on common stock	$ (75,526)		(75,526)
Ending balance (in shares) at Dec. 31, 2023	208,584,667	208,584,667
Ending balance at Dec. 31, 2023	$ 4,995,034	$ 5,802,747	(467,571)	(340,142)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	124,080		124,080
Other comprehensive income (loss), net of tax	(85,989)			(85,989)
Stock-based compensation	4,422	$ 4,422
Stock repurchased and retired (in shares)		(240,329)
Stock repurchased and retired	(4,847)	$ (4,847)
Issuances of common stock under stock plans (in shares)		1,026,057
Issuances of common stock under stock plans	0	$ 0
Cash dividends on common stock	$ (75,455)		(75,455)
Ending balance (in shares) at Mar. 31, 2024	209,370,395	209,370,395
Ending balance at Mar. 31, 2024	$ 4,957,245	$ 5,802,322	$ (418,946)	$ (426,131)