Income Taxes - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Tax [Line Items]
U.S. federal tax rate	21.00%	21.00%	21.00%
Capital gains rate (as a percent)	21.00%
Dividends received	$ 0	$ 0	$ 4,675
Unconsolidated investee dividends			$ 479
Effective rate reduction due to unconsolidated investee dividends (as a percent)	0.00%	0.00%	0.20%
ESOP dividends paid deduction	$ 4,171	$ 1,566	$ 1,083
Effective rate reduction due to dividends paid to ESOP (as a percent)	0.60%	0.50%	0.60%
Expected effective tax rate when deferred items reverse in future years (as a percent)	21.00%
Federal and state income taxes paid	$ 190,300	$ 38,600	$ 23,700
Prime Holdings Insurance Services, Inc. (Prime)
Income Tax [Line Items]
Dividends received			4,700
Unconsolidated investee dividends			$ 500
Lower tax rate (as a percent)			10.80%