Unaudited Consolidated Statements of Changes in Shareholders Equity - USD ($) $ in Thousands		Total	Cumulative effect accounting adjustment	[1]	Common Stock	Additional Paid in Capital	Retained Earnings	Retained Earnings Cumulative effect accounting adjustment	[1]	Accumulated Other Comprehensive Income (Loss)	Unallocated Common Stock Held by ESOP
Beginning balance (in shares) at Dec. 31, 2019					0
Beginning Balance at Dec. 31, 2019		$ 1,600,153	$ (1,131)		$ 0	$ 0	$ 1,644,000	$ (1,131)		$ (43,847)	$ 0
Net income		66,800					66,800
Other comprehensive income (loss), net of tax		47,550								47,550
Ending balance (in shares) at Sep. 30, 2020					0
Ending balance at Sep. 30, 2020		1,713,372			$ 0	0	1,709,669			3,703	0
Beginning balance (in shares) at Jun. 30, 2020					0
Beginning Balance at Jun. 30, 2020		1,693,630			$ 0	0	1,681,164			12,466	0
Net income		28,505					28,505
Other comprehensive income (loss), net of tax		(8,763)								(8,763)
Ending balance (in shares) at Sep. 30, 2020					0
Ending balance at Sep. 30, 2020		$ 1,713,372			$ 0	0	1,709,669			3,703	0
Beginning balance (in shares) at Dec. 31, 2020		186,758,154			186,758,154,000
Beginning Balance at Dec. 31, 2020		$ 3,428,052			$ 1,868	1,854,068	1,665,607			54,234	(147,725)
Dividends to common shareholders	[2]	(37,885)					(37,885)
Net income		119,578					119,578
Other comprehensive income (loss), net of tax		(87,309)								(87,309)
ESOP shares committed to be released		$ 6,856				3,097					3,759
Ending balance (in shares) at Sep. 30, 2021		186,758,154			186,758,154,000
Ending balance at Sep. 30, 2021		$ 3,429,292			$ 1,868	1,857,165	1,747,300			(33,075)	(143,966)
Beginning balance (in shares) at Jun. 30, 2021					186,758,154,000
Beginning Balance at Jun. 30, 2021		3,430,622			$ 1,868	1,856,241	1,723,979			(6,247)	(145,219)
Dividends to common shareholders	[3]	(13,785)					(13,785)
Net income		37,106					37,106
Other comprehensive income (loss), net of tax		(26,828)								(26,828)
ESOP shares committed to be released		$ 2,177				924					1,253
Ending balance (in shares) at Sep. 30, 2021		186,758,154			186,758,154,000
Ending balance at Sep. 30, 2021		$ 3,429,292			$ 1,868	$ 1,857,165	$ 1,747,300			$ (33,075)	$ (143,966)

[1] Represents cumulative impact on retained earnings pursuant to the Company’s (as defined herein) adoption of Accounting Standards Update 2016-02 Leases. The transition adjustment to the opening balance of retained earnings on January 1, 2020 amounted to $1.1 million, net of tax, related to an incremental accrued rent adjustment calculated as a result of electing the hindsight practical expedient.

[2] The Company declared and paid quarterly cash dividends of $0.06, $0.08 and $0.08 per share of common stock during the three months ended March 31, 2021, June 30, 2021 and September 30, 2021, respectively.

[3] The Company declared and paid a quarterly cash dividend of $0.08 per share of common stock during the three months ended September 30, 2021.