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Commercial Mortgage Loans (Tables)
 12 Months Ended
Dec. 31, 2021
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Abstract]  
Schedule of Commercial Mortgage Loans The following table sets forth the cost, fair value, weighted average interest rate, and weighted average remaining maturity of the Company’s residential mortgage loan portfolio as of December 31, 2021 and 2020:
As of:December 31, 2021December 31, 2020
($ in thousands)
Cost $1,063,146 $143,455 
Unpaid principal balance$1,022,461 $139,278 
Net premium on mortgage loans purchased40,685 4,177 
Change in fair value(1,234)(1,425)
Fair value$1,061,912 $142,030 
Weighted average interest rate4.49 %5.95 %
Weighted average remaining maturity (years)3030
The following table sets forth the cost, fair value, weighted average interest rate, and weighted average remaining maturity of the Company’s commercial mortgage loan portfolio as of December 31, 2021 and 2020:
As of:December 31, 2021December 31, 2020
($ in thousands)
Cost$18,641 $7,674 
Unpaid principal balance$18,698 $7,756 
Net discount on mortgage loans purchased(51)(82)
Change in fair value17 (208)
Fair value$18,664 $7,466 
Weighted average interest rate6.25 %6.58 %
Weighted average remaining maturity (years)814