Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Assets
Fixed maturities, amortized cost	$ 494,561	$ 442,578
Equity securities, cost	64,902	80,221
Limited partnerships, affiliated	44,038	45,009
Account receivable, allowance	542	600
Property and equipment, accumulated depreciation	$ 15,328	$ 14,768
Class A Voting [Member]
Shareholders' equity:
Common stock, par value (in dollars per share)	$ 0	$ 0
Common stock, shares authorized (in shares)	3,000,000	3,000,000
Common stock, shares outstanding (in shares)	2,623,109	2,623,109
Class B Non-voting [Member]
Shareholders' equity:
Common stock, par value (in dollars per share)	$ 0	$ 0
Common stock, shares authorized (in shares)	20,000,000	20,000,000
Common stock, shares outstanding (in shares)	12,460,900	12,402,941