Debt - Warehouse Lines of Credit (Details) - USD ($)	Jun. 30, 2023	Dec. 31, 2022
Debt Instrument [Line Items]
Outstanding Borrowings	$ 227,801,000	$ 190,509,000
Warehouse Agreement Borrowings
Debt Instrument [Line Items]
Borrowing Capacity	550,000,000	550,000,000
Outstanding Borrowings	227,801,000	190,509,000
Warehouse Agreement Borrowings | City National Bank
Debt Instrument [Line Items]
Borrowing Capacity	75,000,000	75,000,000
Outstanding Borrowings	$ 32,140,000	$ 27,288,000
Weighted-Average Interest Rate on Outstanding Borrowings	7.01%	5.89%
Warehouse Agreement Borrowings | Comerica Bank
Debt Instrument [Line Items]
Borrowing Capacity	$ 75,000,000	$ 75,000,000
Outstanding Borrowings	$ 6,636,000	$ 26,526,000
Weighted-Average Interest Rate on Outstanding Borrowings	7.22%	6.36%
Warehouse Agreement Borrowings | Origin Bank
Debt Instrument [Line Items]
Borrowing Capacity	$ 75,000,000	$ 75,000,000
Outstanding Borrowings	$ 35,128,000	$ 23,739,000
Weighted-Average Interest Rate on Outstanding Borrowings	7.01%	5.98%
Warehouse Agreement Borrowings | M&T Bank
Debt Instrument [Line Items]
Borrowing Capacity	$ 50,000,000	$ 50,000,000
Outstanding Borrowings	$ 24,298,000	$ 19,126,000
Weighted-Average Interest Rate on Outstanding Borrowings	7.21%	6.45%
Warehouse Agreement Borrowings | Prosperity Bank
Debt Instrument [Line Items]
Borrowing Capacity	$ 100,000,000	$ 100,000,000
Outstanding Borrowings	$ 45,688,000	$ 35,856,000
Weighted-Average Interest Rate on Outstanding Borrowings	7.05%	6.18%
Warehouse Agreement Borrowings | Republic Bank & Trust Company
Debt Instrument [Line Items]
Borrowing Capacity	$ 75,000,000	$ 75,000,000
Outstanding Borrowings	$ 48,868,000	$ 26,636,000
Weighted-Average Interest Rate on Outstanding Borrowings	7.15%	5.81%
Warehouse Agreement Borrowings | Wells Fargo Bank, N.A.
Debt Instrument [Line Items]
Borrowing Capacity	$ 100,000,000	$ 100,000,000
Outstanding Borrowings	$ 35,043,000	$ 31,338,000
Weighted-Average Interest Rate on Outstanding Borrowings	7.23%	6.41%