v3.25.4
SCHEDULE IV - MORTGAGE LOANS ON REAL ESTATE (Detail) - USD ($)
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Mortgage Loans on Real Estate [Line Items]        
Face Amount of Mortgages $ 1,144,292,000      
Carrying Amount of Mortgages 898,318,000 $ 942,765,000 $ 698,776,000 $ 648,130,000
Carrying Amount of Loans Subject to Delinquent Principal or Interest 1,472,000      
Allowance for credit loss on mortgage loans $ (23,078,000)      
Michigan | Group 1        
Mortgage Loans on Real Estate [Line Items]        
Interest Rate 11.78%      
Fixed/Variable F(2)      
Final Maturity Date 2030      
Periodic Payment Terms Interest plus approximately $112.6 of principal payable monthly with $426,322 due at maturity      
Prior Liens $ 0      
Face Amount of Mortgages 621,749,000      
Carrying Amount of Mortgages 433,544,000      
Mortgage loans on real estate periodic payment, amount 112,600      
Mortgage loans on real estate, periodic payment terms, balloon payment to be received $ 426,322,000      
Michigan | Group 7        
Mortgage Loans on Real Estate [Line Items]        
Interest Rate 10.00%      
Fixed/Variable F      
Final Maturity Date 2027      
Periodic Payment Terms Interest payable monthly until maturity      
Prior Liens $ 0      
Face Amount of Mortgages 8,000,000      
Carrying Amount of Mortgages $ 8,000,000      
Michigan | Group 21        
Mortgage Loans on Real Estate [Line Items]        
Interest Rate 10.51%      
Fixed/Variable F(2)      
Final Maturity Date 2030      
Periodic Payment Terms Interest payable monthly until maturity      
Prior Liens $ 0      
Face Amount of Mortgages 560,000      
Carrying Amount of Mortgages $ 362,000      
Michigan | Group 22        
Mortgage Loans on Real Estate [Line Items]        
Interest Rate 10.25%      
Fixed/Variable F(2)      
Final Maturity Date 2030      
Periodic Payment Terms No interest due on the first $300, then interest payable monthly until maturity      
Prior Liens $ 0      
Face Amount of Mortgages 500,000      
Carrying Amount of Mortgages 391,000      
Mortgage loans on real estate periodic payment, amount 0      
Mortgage loans on real estate, periodic payment terms, balloon payment to be received $ 300,000      
Michigan | Group 23        
Mortgage Loans on Real Estate [Line Items]        
Interest Rate 10.50%      
Fixed/Variable F(2)      
Final Maturity Date 2030      
Periodic Payment Terms Interest plus approximately $1.9 of principal payable monthly with $1,356 due at maturity      
Face Amount of Mortgages $ 3,835,000      
Carrying Amount of Mortgages 1,458,000      
Mortgage loans on real estate periodic payment, amount 1,900      
Mortgage loans on real estate, periodic payment terms, balloon payment to be received $ 1,356,000      
Michigan | Group 24        
Mortgage Loans on Real Estate [Line Items]        
Interest Rate 11.91%      
Fixed/Variable F(2)      
Final Maturity Date 2030      
Periodic Payment Terms Interest plus approximately $6.1 of principal payable monthly with $43,864 due at maturity      
Prior Liens $ 0      
Face Amount of Mortgages 54,223,000      
Carrying Amount of Mortgages 44,272,000      
Mortgage loans on real estate periodic payment, amount 6,100      
Mortgage loans on real estate, periodic payment terms, balloon payment to be received $ 43,864,000      
Ohio | Group 2        
Mortgage Loans on Real Estate [Line Items]        
Interest Rate 10.50%      
Fixed/Variable F(2)      
Final Maturity Date 2037      
Periodic Payment Terms Interest payable monthly until maturity      
Prior Liens $ 0      
Face Amount of Mortgages 72,420,000      
Carrying Amount of Mortgages $ 72,420,000      
Ohio | Group 4        
Mortgage Loans on Real Estate [Line Items]        
Interest Rate 10.00%      
Fixed/Variable F      
Final Maturity Date 2027      
Periodic Payment Terms Interest payable monthly until maturity      
Prior Liens $ 0      
Face Amount of Mortgages 7,300,000      
Carrying Amount of Mortgages $ 7,300,000      
Ohio | Group 20        
Mortgage Loans on Real Estate [Line Items]        
Interest Rate 10.25%      
Fixed/Variable F(2)      
Final Maturity Date 2037      
Periodic Payment Terms Interest plus approximately $27.2 of principal payable monthly with $82 due at maturity      
Prior Liens $ 0      
Face Amount of Mortgages 7,200,000      
Carrying Amount of Mortgages 6,543,000      
Mortgage loans on real estate periodic payment, amount 27,200      
Mortgage loans on real estate, periodic payment terms, balloon payment to be received $ 82,000      
Maryland | Group 3        
Mortgage Loans on Real Estate [Line Items]        
Interest Rate 10.00%      
Fixed/Variable F      
Final Maturity Date 2026      
Periodic Payment Terms Interest payable monthly until maturity      
Prior Liens $ 0      
Face Amount of Mortgages 4,623,000      
Carrying Amount of Mortgages $ 4,623,000      
Illinois | Group 5        
Mortgage Loans on Real Estate [Line Items]        
Interest Rate 10.00%      
Fixed/Variable F      
Final Maturity Date 2028      
Periodic Payment Terms Interest payable monthly until maturity      
Prior Liens $ 0      
Face Amount of Mortgages 60,000,000      
Carrying Amount of Mortgages $ 53,750,000      
Pennsylvania | Group 6        
Mortgage Loans on Real Estate [Line Items]        
Interest Rate 10.00%      
Fixed/Variable F      
Final Maturity Date 2027      
Periodic Payment Terms Interest payable monthly until maturity      
Prior Liens $ 0      
Face Amount of Mortgages 38,626,000      
Carrying Amount of Mortgages $ 37,382,000      
South Carolina | Group 8        
Mortgage Loans on Real Estate [Line Items]        
Interest Rate 10.00%      
Fixed/Variable F      
Final Maturity Date 2028      
Periodic Payment Terms Interest payable monthly until maturity      
Prior Liens $ 0      
Face Amount of Mortgages 11,844,000      
Carrying Amount of Mortgages $ 11,844,000      
Florida | Group 9        
Mortgage Loans on Real Estate [Line Items]        
Interest Rate 10.00%      
Fixed/Variable F      
Final Maturity Date 2027      
Periodic Payment Terms Interest payable monthly until maturity      
Prior Liens $ 0      
Face Amount of Mortgages 8,332,000      
Carrying Amount of Mortgages $ 8,332,000      
Florida | Group 16        
Mortgage Loans on Real Estate [Line Items]        
Interest Rate 10.00%      
Fixed/Variable F      
Final Maturity Date 2030      
Periodic Payment Terms Interest payable monthly until maturity      
Prior Liens $ 0      
Face Amount of Mortgages 10,400,000      
Carrying Amount of Mortgages $ 10,400,000      
Florida | Group 19        
Mortgage Loans on Real Estate [Line Items]        
Interest Rate 10.00%      
Fixed/Variable F      
Final Maturity Date 2027      
Periodic Payment Terms Interest payable monthly until maturity      
Prior Liens $ 0      
Face Amount of Mortgages 11,891,000      
Carrying Amount of Mortgages $ 11,891,000      
Tennessee | Group 10        
Mortgage Loans on Real Estate [Line Items]        
Interest Rate 8.00%      
Fixed/Variable F      
Final Maturity Date 2026      
Periodic Payment Terms Interest payable monthly until maturity      
Prior Liens $ 0      
Face Amount of Mortgages 8,680,000      
Carrying Amount of Mortgages $ 8,680,000      
Tennessee | Group 13        
Mortgage Loans on Real Estate [Line Items]        
Interest Rate 8.35%      
Fixed/Variable F      
Final Maturity Date 2015      
Periodic Payment Terms Past due      
Prior Liens $ 0      
Face Amount of Mortgages 6,377,000      
Carrying Amount of Mortgages 1,472,000      
Carrying Amount of Loans Subject to Delinquent Principal or Interest $ 1,472,000      
Oregon | Group 11        
Mortgage Loans on Real Estate [Line Items]        
Interest Rate 9.00%      
Fixed/Variable F      
Final Maturity Date 2027      
Periodic Payment Terms Interest payable monthly until maturity      
Prior Liens $ 0      
Face Amount of Mortgages 5,450,000      
Carrying Amount of Mortgages $ 5,450,000      
Massachusetts | Group 12        
Mortgage Loans on Real Estate [Line Items]        
Interest Rate 9.00%      
Fixed/Variable F      
Final Maturity Date 2029      
Periodic Payment Terms Interest plus $250 of principal payable quarterly with $2,436 due at maturity      
Prior Liens $ 0      
Face Amount of Mortgages 9,000,000      
Mortgage loans on real estate periodic payment, amount 250,000      
Mortgage loans on real estate, periodic payment terms, balloon payment to be received $ 2,436,000      
Georgia | Group 14        
Mortgage Loans on Real Estate [Line Items]        
Interest Rate 10.00%      
Fixed/Variable F      
Final Maturity Date 2029      
Periodic Payment Terms Interest payable monthly until maturity      
Prior Liens $ 0      
Face Amount of Mortgages 9,551,000      
Carrying Amount of Mortgages $ 9,551,000      
Georgia and Florida | Group 15        
Mortgage Loans on Real Estate [Line Items]        
Interest Rate 10.00%      
Fixed/Variable F      
Final Maturity Date 2027      
Periodic Payment Terms Interest payable monthly until maturity      
Prior Liens $ 0      
Face Amount of Mortgages 29,700,000      
Carrying Amount of Mortgages $ 29,700,000      
United Kingdom | Group 17        
Mortgage Loans on Real Estate [Line Items]        
Interest Rate 10.00%      
Fixed/Variable F      
Final Maturity Date 2026      
Periodic Payment Terms Interest payable monthly until maturity      
Prior Liens $ 0      
Face Amount of Mortgages 39,069,000      
Carrying Amount of Mortgages $ 39,069,000      
United Kingdom | Group 18        
Mortgage Loans on Real Estate [Line Items]        
Interest Rate 10.00%      
Fixed/Variable F      
Final Maturity Date 2026      
Periodic Payment Terms Interest payable monthly until maturity      
Prior Liens $ 0      
Face Amount of Mortgages 61,742,000      
Carrying Amount of Mortgages $ 61,742,000      
United Kingdom | Group 25        
Mortgage Loans on Real Estate [Line Items]        
Interest Rate 10.00%      
Fixed/Variable F      
Final Maturity Date 2026      
Periodic Payment Terms Interest payable monthly until maturity      
Prior Liens $ 0      
Face Amount of Mortgages 53,220,000      
Carrying Amount of Mortgages $ 53,220,000