Fair Values of Financial Instruments, Measured on a Recurring Basis (Details) - USD ($) $ in Thousands		Sep. 30, 2019	Dec. 31, 2018
Financial instruments carried at fair value measured on a recurring basis [Abstract]
Fixed maturities		$ 217,517	$ 210,386
Equity securities		19,507	20,758
Recurring [Member]
Financial instruments carried at fair value measured on a recurring basis [Abstract]
Fixed maturities		217,517	210,386
Equity securities		19,507	20,758
Cash equivalents		29,132	8,250
Assets at fair value		266,156	239,394
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		11,233	11,413
Equity securities		16,921	16,398
Cash equivalents		29,132	8,250
Assets at fair value		57,286	36,061
Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member]
Financial instruments carried at fair value measured on a recurring basis [Abstract]
Fixed maturities		205,064	197,907
Equity securities	[1]	2,586	4,360
Cash equivalents		0	0
Assets at fair value		207,650	202,267
Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member]
Financial instruments carried at fair value measured on a recurring basis [Abstract]
Fixed maturities	[1]	1,220	1,066
Equity securities		0	0
Cash equivalents		0	0
Assets at fair value		$ 1,220	$ 1,066

[1] All underlying securities are financial services industry related.