CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Investments:
Fixed maturities, cost	$ 215,241	$ 210,505
Common and non-redeemable preferred stocks, cost	10,918	11,453
Other invested assets, cost	9,167	9,709
Receivables:
Insurance premiums and other, allowance for doubtful accounts	$ 219	$ 280
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)	20,453,217	20,446,705
Treasury stock, at cost (in shares)	1,947,677	1,954,189