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Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - USD ($)
$ / shares in Thousands
Mar. 31, 2023
Dec. 31, 2022
Fixed maturities, cost $ 39,267,000 $ 40,127,000
Equity investments, cost 187,000 187,000
Property and equipment, accumulated depreciation 1,115,000 1,041,000
Intangible assets accumulated amortization $ 23,646,000 $ 22,228,000
Common stock, no par value (in dollars per share) $ 0 $ 0
Common stock, authorized (in shares) 50,000,000 50,000,000
Common stock, issued (in shares) 25,444,701 23,437,530
Common stock, outstanding (in shares) 25,197,251 23,190,080
Treasury stock (in shares) 247,450 247,450
Redeemable Class A Preferred Stock [Member]    
Temporary equity, par value (in dollars per share) $ 0 $ 0
Temporary equity, authority (in shares) 1,000,000 1,000,000
Temporary equity, issued (in shares) 30,000 149,733
Temporary equity, outstanding (in shares) 30,000 149,733
Temporary equity, redemption $ 1,219,000 $ 6,013,000
Other Receivables [Member]    
Allowance for credit losses 8 8
Allowance for credit losses 8 8
Service Fees [Member]    
Allowance for credit losses 182 147
Allowance for credit losses $ 182 $ 147