Debt - Warehouse Lines of Credit (Details) - USD ($)	Sep. 30, 2024	Dec. 31, 2023
Debt Instrument [Line Items]
Outstanding Borrowings	$ 208,817,000	$ 151,964,000
Warehouse Agreement Borrowings
Debt Instrument [Line Items]
Borrowing Capacity	275,000,000	395,000,000
Outstanding Borrowings	208,817,000	151,964,000
Warehouse Agreement Borrowings | City National Bank
Debt Instrument [Line Items]
Borrowing Capacity	50,000,000	50,000,000
Outstanding Borrowings	$ 45,374,000	$ 20,046,000
Weighted-Average Interest Rate on Outstanding Borrowings	6.72%	7.24%
Warehouse Agreement Borrowings | Origin Bank
Debt Instrument [Line Items]
Borrowing Capacity	$ 75,000,000	$ 75,000,000
Outstanding Borrowings	$ 48,577,000	$ 30,110,000
Weighted-Average Interest Rate on Outstanding Borrowings	6.83%	7.25%
Warehouse Agreement Borrowings | M&T Bank
Debt Instrument [Line Items]
Borrowing Capacity	$ 50,000,000	$ 50,000,000
Outstanding Borrowings	$ 42,385,000	$ 18,870,000
Weighted-Average Interest Rate on Outstanding Borrowings	6.83%	7.39%
Warehouse Agreement Borrowings | Prosperity Bank
Debt Instrument [Line Items]
Borrowing Capacity	$ 100,000,000	$ 75,000,000
Outstanding Borrowings	$ 72,481,000	$ 29,358,000
Weighted-Average Interest Rate on Outstanding Borrowings	6.75%	7.23%
Warehouse Agreement Borrowings | Republic Bank & Trust Company
Debt Instrument [Line Items]
Borrowing Capacity		$ 45,000,000
Outstanding Borrowings		$ 23,415,000
Weighted-Average Interest Rate on Outstanding Borrowings		7.28%
Warehouse Agreement Borrowings | Wells Fargo Bank, N.A.
Debt Instrument [Line Items]
Borrowing Capacity		$ 100,000,000
Outstanding Borrowings		$ 30,165,000
Weighted-Average Interest Rate on Outstanding Borrowings		7.36%