Debt - Warehouse Lines of Credit (Details) - USD ($)	Mar. 31, 2024	Dec. 31, 2023
Debt Instrument [Line Items]
Outstanding Borrowings	$ 156,588,000	$ 151,964,000
Warehouse Agreement Borrowings
Debt Instrument [Line Items]
Borrowing Capacity	395,000,000	395,000,000
Outstanding Borrowings	156,588,000	151,964,000
Warehouse Agreement Borrowings | City National Bank
Debt Instrument [Line Items]
Borrowing Capacity	50,000,000	50,000,000
Outstanding Borrowings	$ 21,828,000	$ 20,046,000
Weighted-Average Interest Rate on Outstanding Borrowings	7.25%	7.24%
Warehouse Agreement Borrowings | Origin Bank
Debt Instrument [Line Items]
Borrowing Capacity	$ 75,000,000	$ 75,000,000
Outstanding Borrowings	$ 22,366,000	$ 30,110,000
Weighted-Average Interest Rate on Outstanding Borrowings	7.30%	7.25%
Warehouse Agreement Borrowings | M&T Bank
Debt Instrument [Line Items]
Borrowing Capacity	$ 50,000,000	$ 50,000,000
Outstanding Borrowings	$ 19,951,000	$ 18,870,000
Weighted-Average Interest Rate on Outstanding Borrowings	7.32%	7.39%
Warehouse Agreement Borrowings | Prosperity Bank
Debt Instrument [Line Items]
Borrowing Capacity	$ 75,000,000	$ 75,000,000
Outstanding Borrowings	$ 36,294,000	$ 29,358,000
Weighted-Average Interest Rate on Outstanding Borrowings	7.20%	7.23%
Warehouse Agreement Borrowings | Republic Bank & Trust Company
Debt Instrument [Line Items]
Borrowing Capacity	$ 45,000,000	$ 45,000,000
Outstanding Borrowings	$ 33,091,000	$ 23,415,000
Weighted-Average Interest Rate on Outstanding Borrowings	7.26%	7.28%
Warehouse Agreement Borrowings | Wells Fargo Bank, N.A.
Debt Instrument [Line Items]
Borrowing Capacity	$ 100,000,000	$ 100,000,000
Outstanding Borrowings	$ 23,058,000	$ 30,165,000
Weighted-Average Interest Rate on Outstanding Borrowings	7.35%	7.36%