Fair Values of Financial Instruments, Measured on a Recurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Financial instruments carried at fair value measured on a recurring basis [Abstract]
Fixed maturities	$ 240,038	$ 260,986
Equity securities	21,316	19,124
Recurring [Member]
Financial instruments carried at fair value measured on a recurring basis [Abstract]
Fixed maturities	240,038	260,986
Equity securities	21,316	19,124
Cash equivalents	11,534	12,713
Assets at fair value	272,888	292,823
Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Financial instruments carried at fair value measured on a recurring basis [Abstract]
Fixed maturities	0	250
Equity securities	21,160	18,967
Cash equivalents	11,534	12,713
Assets at fair value	32,694	31,930
Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member]
Financial instruments carried at fair value measured on a recurring basis [Abstract]
Fixed maturities	240,038	260,486
Equity securities	0	0
Cash equivalents	0	0
Assets at fair value	240,038	260,486
Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member]
Financial instruments carried at fair value measured on a recurring basis [Abstract]
Fixed maturities	0	250
Equity securities	156	157
Cash equivalents	0	0
Assets at fair value	$ 156	$ 407