Segment Reporting - Direct-to-consumer Channel Volume (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Interest Rate Lock Commitment
Revenue, Major Customer [Line Items]
Direct-to-consumer	$ 0	$ 95,756,000	$ 0	$ 663,848,000
Retail	402,951,000	605,114,000	777,993,000	1,346,129,000
Mortgage loan sales	402,951,000	700,870,000	777,993,000	2,009,977,000
Mortgage
Revenue, Major Customer [Line Items]
Mortgage loan sales	$ 330,326,000	$ 869,688,000	$ 662,633,000	$ 2,154,170,000