Consolidated Balance Sheets (Parenthetical) - USD ($) shares in Thousands, $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Statement of Financial Position [Abstract]
Fixed maturities, available-for-sale, amortized cost	$ 99,023	$ 100,314
Equity securities, cost	$ 26,530	$ 26,003
Preferred stock, shares authorized	1,000	1,000
Preferred stock, shares issued	0	0
Common stock, no par value
Common stock, shares authorized	10,000	10,000
Common stock, shares issued	1,887	1,886
Common stock, shares outstanding	1,887	1,886
Common stock, held by Company's subsidiary	292	292