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Debt - Warehouse Lines of Credit (Details) - USD ($)
Dec. 31, 2022
Dec. 31, 2021
Debt Instrument [Line Items]    
Outstanding Borrowings $ 190,509,000 $ 33,043,000
Warehouse Agreement Borrowings    
Debt Instrument [Line Items]    
Borrowing Capacity 550,000,000 115,000,000
Outstanding Borrowings $ 190,509,000 $ 33,043,000
Weighted-Average Interest Rate on Outstanding Borrowings
Warehouse Agreement Borrowings | Western Alliance Bank    
Debt Instrument [Line Items]    
Borrowing Capacity   $ 50,000,000
Outstanding Borrowings   $ 17,089,000
Weighted-Average Interest Rate on Outstanding Borrowings   3.00%
Warehouse Agreement Borrowings | Texas Capital Bank, N.A.    
Debt Instrument [Line Items]    
Borrowing Capacity   $ 40,000,000
Outstanding Borrowings   $ 11,852,000
Weighted-Average Interest Rate on Outstanding Borrowings   3.01%
Warehouse Agreement Borrowings | Flagstar Bank, FSB    
Debt Instrument [Line Items]    
Borrowing Capacity   $ 25,000,000
Outstanding Borrowings   $ 4,102,000
Weighted-Average Interest Rate on Outstanding Borrowings   3.00%
Warehouse Agreement Borrowings | City National Bank    
Debt Instrument [Line Items]    
Borrowing Capacity $ 75,000,000  
Outstanding Borrowings $ 27,288,000  
Weighted-Average Interest Rate on Outstanding Borrowings 5.89%  
Warehouse Agreement Borrowings | Comerica Bank    
Debt Instrument [Line Items]    
Borrowing Capacity $ 75,000,000  
Outstanding Borrowings $ 26,526,000  
Weighted-Average Interest Rate on Outstanding Borrowings 6.36%  
Warehouse Agreement Borrowings | Origin Bank    
Debt Instrument [Line Items]    
Borrowing Capacity $ 75,000,000  
Outstanding Borrowings $ 23,739,000  
Weighted-Average Interest Rate on Outstanding Borrowings 5.98%  
Warehouse Agreement Borrowings | M&T Bank    
Debt Instrument [Line Items]    
Borrowing Capacity $ 50,000,000  
Outstanding Borrowings $ 19,126,000  
Weighted-Average Interest Rate on Outstanding Borrowings 6.45%  
Warehouse Agreement Borrowings | Prosperity Bank    
Debt Instrument [Line Items]    
Borrowing Capacity $ 100,000,000  
Outstanding Borrowings $ 35,856,000  
Weighted-Average Interest Rate on Outstanding Borrowings 6.18%  
Warehouse Agreement Borrowings | Republic Bank & Trust Company    
Debt Instrument [Line Items]    
Borrowing Capacity $ 75,000,000  
Outstanding Borrowings $ 26,636,000  
Weighted-Average Interest Rate on Outstanding Borrowings 5.81%  
Warehouse Agreement Borrowings | Wells Fargo Bank, N.A.    
Debt Instrument [Line Items]    
Borrowing Capacity $ 100,000,000  
Outstanding Borrowings $ 31,338,000  
Weighted-Average Interest Rate on Outstanding Borrowings 6.41%