Segment Reporting - Direct-to-consumer Channel Volume (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Interest Rate Lock Commitment
Revenue, Major Customer [Line Items]
Direct-to-consumer	$ 0	$ 568,092
Retail	375,042	741,015
Mortgage loan sales	375,042	1,309,107
Mortgage
Revenue, Major Customer [Line Items]
Mortgage loan sales	$ 332,307	$ 1,284,482