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Consolidated Balance Sheets (Parenthetical) - USD ($)
$ in Thousands
Sep. 30, 2023
Dec. 31, 2022
Available for sale, amortized cost $ 1,334,130 $ 1,301,723
Available-for-sale, net of allowance for expected credit losses 0 0
Premiums receivable, allowance for expected credit loss 4,120 3,322
Reinsurance receivable, allowance for expected credit loss $ 8,992 $ 8,992
Common shares, par value $ 0 $ 0
Common shares, shares authorized 900,000,000 900,000,000
Series A Cumulative Fixed Rate Preferred Shares    
Preferred shares, par value $ 1,000 $ 1,000
Preferred shares, shares authorized 100,000,000 100,000,000
Preferred shares, shares issued 4,000 4,000
Preferred shares, shares outstanding 4,000 4,000
Preferred shares, liquidation preference $ 1,000 $ 1,000
Class A Common Shares    
Common shares, shares issued 11,020,174 10,876,041
Common shares, shares outstanding 9,748,933 10,073,660
Treasury shares, shares 1,271,241 802,381
Class B Common Shares    
Common shares, shares issued 3,793,612 3,793,612
Common shares, shares outstanding 3,793,612 3,793,612