Income Taxes - Schedule of Reconciliation of Income Tax Expense (Benefit) Attributable to Income from Operations with Amounts Computed by Applying U.S. Federal Tax Rate to Pretax Income from Continuing Operations (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Reconciliation of income tax expense reported to amount computed by applying the U.S. federal tax rate
Provision for income taxes at the statutory rate	$ 20,167	$ (1,376)	$ 45,953	$ 10,914
Increase (reduction) in taxes resulting from:
Excess tax benefit on share-based compensation	(878)	(761)	(2,868)	(2,175)
Tax exempt interest income	(274)	(288)	(557)	(570)
Dividends received deduction	(209)	(163)	(433)	(434)
Tax credit	(780)	(1,461)	(1,559)	(2,922)
ESOP dividends paid deduction	(144)	(138)	(281)	(268)
Nondeductible expenses	745	258	1,346	574
Other items, net	(248)	(386)	758	1,168
Total tax expense	$ 18,379	$ (4,315)	$ 42,359	$ 6,287
Reconciliation of income tax expense rate to the U.S. federal tax rate
Tax rate used (as a percent)	21.00%	21.00%	21.00%	21.00%
Excess tax benefit on share-based compensation (as a percent)	(0.90%)	11.60%	(1.30%)	(4.20%)
Effective rate reduction due to tax exempt interest income (as a percent)	(0.30%)	4.40%	(0.30%)	(1.10%)
Effective rate reduction due to dividend received (as a percent)	(0.20%)	2.50%	(0.20%)	(0.80%)
Effective rate reduction due to tax credit (as a percent)	(0.80%)	22.30%	(0.70%)	(5.60%)
Effective rate reduction due to dividend paid to ESOP (as a percent)	(0.20%)	2.10%	(0.10%)	(0.50%)
Effective rate reduction due to nondeductible expenses (as a percent)	0.80%	(3.90%)	0.60%	1.10%
Effective rate reduction due to other items, net (as a percent)	(0.30%)	5.80%	0.40%	2.20%
Total tax expense	19.10%	65.80%	19.40%	12.10%