CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Investments:
Fixed maturities, cost	$ 218,519	$ 219,924
Equity securities, cost	9,060	10,515
Other invested assets, cost	7,005	6,905
Receivables:
Insurance premiums and other, allowance for doubtful accounts	$ 204	$ 207
Shareholders' equity:
Preferred stock, par value (in dollars per share)	$ 1	$ 1
Preferred stock, shares authorized (in shares)	4,000,000	4,000,000
Preferred stock, shares issued (in shares)	55,000	55,000
Preferred stock, shares outstanding (in shares)	55,000	55,000
Preferred stock, redemption value	$ 5,500	$ 5,500
Common stock, par value (in dollars per share)	$ 1	$ 1
Common stock, shares authorized (in shares)	50,000,000	50,000,000
Common stock, shares issued (in shares)	22,400,894	22,400,894
Common stock, shares outstanding (in shares)	20,150,044	20,170,360
Treasury stock, at cost (in shares)	2,250,850	2,230,534