Quarterly report pursuant to Section 13 or 15(d)

Warehouse Lines of Credit (Details)

v3.21.2
Warehouse Lines of Credit (Details) - USD ($)
9 Months Ended
Sep. 30, 2021
Jul. 31, 2021
Dec. 31, 2020
Line of Credit Facility [Line Items]      
Line of credit, Outstanding, current $ 10,305,000    
Liquid assets 28,826,000   $ 32,856,000
Libor interest rate   2.50%  
Warehousing credit and security agreement      
Line of Credit Facility [Line Items]      
Maximum borrowing capacity 15,000,000.0    
Line of credit, Outstanding, current $ 0    
Libor interest rate 2.09%    
Debt-to-tangible net worth ratio 15.00%    
Tangible net worth $ 2,300,000    
Warehousing credit and security agreement | Minimum      
Line of Credit Facility [Line Items]      
Liquid assets $ 1,000,000.0    
Warehousing credit and security agreement | Prime rate      
Line of Credit Facility [Line Items]      
Variable rate, Basis spread 0.75%    
Prime rate, Basis spread 3.25    
Variable Interest Rate 3.85%    
Warehousing credit and security agreement | London Interbank Offered Rate (LIBOR)      
Line of Credit Facility [Line Items]      
Libor interest rate 2.00%    
Warehousing credit and security agreement | London Interbank Offered Rate (LIBOR) | Minimum      
Line of Credit Facility [Line Items]      
Libor interest rate 2.00%    
Warehousing credit and security agreement | London Interbank Offered Rate (LIBOR) | Maximum      
Line of Credit Facility [Line Items]      
Libor interest rate 3.50%    
Master loan agreement      
Line of Credit Facility [Line Items]      
Variable Interest Rate 3.625%    
Maximum borrowing capacity $ 15,000,000.0    
Line of credit, Outstanding, current 4,100,000    
Master loan agreement | Minimum      
Line of Credit Facility [Line Items]      
Liquid assets 1,000,000.0    
Mortgage participation purchase agreement      
Line of Credit Facility [Line Items]      
Maximum borrowing capacity $ 25,000,000.0    
Interest Rate 3.50%    
Line of credit, Outstanding, noncurrent $ 6,200,000    
Mortgage participation purchase agreement | Minimum      
Line of Credit Facility [Line Items]      
Liquid assets $ 1,000,000.0