Consolidated Statements of Changes in Shareholders' Equity - USD ($) $ in Thousands		Total	Cumulative effect accounting adjustment		Common Stock	Additional Paid in Capital	Retained Earnings	Retained Earnings Cumulative effect accounting adjustment		Accumulated Other Comprehensive Income (Loss)	Unallocated Common Stock Held by ESOP
Beginning balance (in shares) at Dec. 31, 2020					186,758,154
Beginning balance at Dec. 31, 2020		$ 3,428,052			$ 1,868	$ 1,854,068	$ 1,665,607			$ 54,234	$ (147,725)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Dividends to common shareholders		(51,619)					(51,619)
Repurchased common stock (in shares)					(1,135,878)
Repurchased common stock		(23,224)			$ (12)	(23,212)
Issuance of restricted stock awards (in shares)					683,056
Issuance of restricted stock awards		0			$ 7	(7)
Net income		154,665					154,665
Other comprehensive loss, net of tax		(110,930)								(110,930)
ESOP shares committed to be released		9,408				4,392					5,016
Ending balance (in shares) at Dec. 31, 2021					186,305,332
Ending balance at Dec. 31, 2021		$ 3,406,352	$ (20,098)	[1]	$ 1,863	1,835,241	1,768,653	$ (20,098)	[1]	(56,696)	(142,709)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Accounting Standards Update [Extensible Enumeration]	[1]	Accounting Standards Update 2016-13
Dividends to common shareholders		$ (66,539)					(66,539)
Repurchased common stock (in shares)					(10,112,272)
Repurchased common stock		(201,618)			$ (101)	(201,517)
Issuance of restricted stock awards (in shares)					31,559
Issuance of restricted stock awards		0			$ 1	(1)
Unvested restricted stock awards forfeited and subsequently cancelled (in shares)					(52,546)
Unvested restricted stock awards forfeited and subsequently cancelled		0			$ (1)	1
Share-based compensation		10,507				10,507
Net income		199,759					199,759
Other comprehensive loss, net of tax		(866,496)								(866,496)
ESOP shares committed to be released		$ 9,923				4,910					5,013
Ending balance (in shares) at Dec. 31, 2022		176,172,073			176,172,073
Ending balance at Dec. 31, 2022		$ 2,471,790	$ 822	[2]	$ 1,762	1,649,141	1,881,775	$ 822	[2]	(923,192)	(137,696)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Accounting Standards Update [Extensible Enumeration]	[2]	Accounting Standards Update 2022-02
Dividends to common shareholders		$ (67,020)					(67,020)
Issuance of restricted stock awards (in shares)					47,820
Issuance of restricted stock awards		0			$ 1	(1)
Issuance of common stock under share-based compensation arrangements (in shares)	[3]				207,100
Issuance of common stock under share-based compensation arrangements	[3]	(1,396)			$ 4	(1,400)
Share-based compensation		16,513				16,513
Net income		232,177					232,177
Other comprehensive loss, net of tax		314,840								314,840
ESOP shares committed to be released		$ 7,129				2,188					4,941
Ending balance (in shares) at Dec. 31, 2023		176,426,993			176,426,993
Ending balance at Dec. 31, 2023		$ 2,974,855			$ 1,767	$ 1,666,441	$ 2,047,754			$ (608,352)	$ (132,755)

[1] Represents gross transition adjustment amount of $28.0 million, net of taxes of $7.9 million, to reflect the cumulative impact on retained earnings pursuant to the Company’s adoption of Accounting Standards Update 2016-13. Refer to Note 4, “Loans and Allowance for Credit Losses” for additional discussion.

[2] Represents gross transition adjustment amount of $1.1 million, net of taxes of $0.3 million, to reflect the cumulative impact on retained earnings pursuant to the Company’s adoption of Accounting Standards Update 2022-02. Refer to Note 4, “Loans and Allowance for Credit Losses” for additional discussion.

[3] Represents shares issued, net of employee tax withheld, during the year ended December 31, 2023 upon the vesting of restricted stock units. Refer to Note 16, “Share-Based Compensation” for additional discussion.