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Loans Held for Investment - Schedule of Commercial real estate loans by property types and LTV (Details) - USD ($)
Jun. 30, 2026
Jun. 30, 2025
Loans Held for Investment    
Total commercial real estate $ 1,028,601,000 $ 1,042,423,000
Mortgage loans | Commercial real estate    
Loans Held for Investment    
Total commercial real estate $ 66,731,000 $ 72,766,000
Percentage of Total commercial Real Estate 100.00% 100.00%
Weighted Average LTV 35 37
Mortgage loans | Commercial real estate | Office    
Loans Held for Investment    
Total commercial real estate $ 21,219,000 $ 25,561,000
Percentage of Total commercial Real Estate 32.00% 35.00%
Weighted Average LTV 38 41
Mortgage loans | Commercial real estate | Mixed use    
Loans Held for Investment    
Total commercial real estate $ 14,656,000 $ 14,609,000
Percentage of Total commercial Real Estate 22.00% 20.00%
Weighted Average LTV 33 33
Mortgage loans | Commercial real estate | Office/Retail    
Loans Held for Investment    
Total commercial real estate $ 6,200,000 $ 6,400,000
Mortgage loans | Commercial real estate | Multi-family/Retail    
Loans Held for Investment    
Total commercial real estate 5,200,000 5,300,000
Mortgage loans | Commercial real estate | Other Mixed Use    
Loans Held for Investment    
Total commercial real estate 2,200,000 1,600,000
Mortgage loans | Commercial real estate | Multi-family/Commercial    
Loans Held for Investment    
Total commercial real estate 724 739
Mortgage loans | Commercial real estate | Multi-family/Office    
Loans Held for Investment    
Total commercial real estate 383 559
Mortgage loans | Commercial real estate | Retail    
Loans Held for Investment    
Total commercial real estate $ 9,231,000 $ 8,001,000
Percentage of Total commercial Real Estate 14.00% 11.00%
Weighted Average LTV 34 31
Mortgage loans | Commercial real estate | Warehouse    
Loans Held for Investment    
Total commercial real estate $ 8,346,000 $ 9,201,000
Percentage of Total commercial Real Estate 12.00% 13.00%
Weighted Average LTV 29 30
Mortgage loans | Commercial real estate | Mobile home park    
Loans Held for Investment    
Total commercial real estate $ 6,087,000 $ 6,761,000
Percentage of Total commercial Real Estate 9.00% 9.00%
Weighted Average LTV 34 37
Mortgage loans | Commercial real estate | Medical/dental office    
Loans Held for Investment    
Total commercial real estate $ 5,473,000 $ 6,888,000
Percentage of Total commercial Real Estate 8.00% 9.00%
Weighted Average LTV 40 43
Mortgage loans | Commercial real estate | Restaurant/Fast Food    
Loans Held for Investment    
Total commercial real estate $ 1,157,000 $ 1,174,000
Percentage of Total commercial Real Estate 2.00% 2.00%
Weighted Average LTV 45 46
Mortgage loans | Commercial real estate | Automotive - non gasoline    
Loans Held for Investment    
Total commercial real estate $ 562,000 $ 571,000
Percentage of Total commercial Real Estate 1.00% 1.00%
Weighted Average LTV 25 26
Mortgage loans | Owner Occupied Loan Balance    
Loans Held for Investment    
Total commercial real estate $ 9,735,000 $ 10,469,000
Mortgage loans | Owner Occupied Loan Balance | Office    
Loans Held for Investment    
Total commercial real estate 5,053,000 5,666,000
Mortgage loans | Owner Occupied Loan Balance | Mixed use    
Loans Held for Investment    
Total commercial real estate 264,000 279,000
Mortgage loans | Owner Occupied Loan Balance | Warehouse    
Loans Held for Investment    
Total commercial real estate 1,290,000 1,332,000
Mortgage loans | Owner Occupied Loan Balance | Medical/dental office    
Loans Held for Investment    
Total commercial real estate 2,458,000 2,511,000
Mortgage loans | Owner Occupied Loan Balance | Restaurant/Fast Food    
Loans Held for Investment    
Total commercial real estate 670,000 681,000
Mortgage loans | Non Owner Occupied Loan Balance    
Loans Held for Investment    
Total commercial real estate 56,996,000 62,297,000
Mortgage loans | Non Owner Occupied Loan Balance | Office    
Loans Held for Investment    
Total commercial real estate 16,166,000 19,895,000
Mortgage loans | Non Owner Occupied Loan Balance | Mixed use    
Loans Held for Investment    
Total commercial real estate 14,392,000 14,330,000
Mortgage loans | Non Owner Occupied Loan Balance | Retail    
Loans Held for Investment    
Total commercial real estate 9,231,000 8,001,000
Mortgage loans | Non Owner Occupied Loan Balance | Warehouse    
Loans Held for Investment    
Total commercial real estate 7,056,000 7,869,000
Mortgage loans | Non Owner Occupied Loan Balance | Mobile home park    
Loans Held for Investment    
Total commercial real estate 6,087,000 6,761,000
Mortgage loans | Non Owner Occupied Loan Balance | Medical/dental office    
Loans Held for Investment    
Total commercial real estate 3,015,000 4,377,000
Mortgage loans | Non Owner Occupied Loan Balance | Restaurant/Fast Food    
Loans Held for Investment    
Total commercial real estate 487,000 493,000
Mortgage loans | Non Owner Occupied Loan Balance | Automotive - non gasoline    
Loans Held for Investment    
Total commercial real estate $ 562,000 $ 571,000