CONSOLIDATED STATEMENTS OF INCOME (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
REVENUES
Premiums earned (affiliated $534,105, $509,704 and $452,334)	$ 540,722	$ 515,506	$ 458,846
Investment income, net	46,465	43,022	44,145
Net realized investment gains, excluding impairment losses on securities available-for-sale	5,227	9,060	8,203
Total other-than-temporary impairment losses on securities available-for-sale	(878)	(63)	(186)
Portion of other-than-temporary impairment losses on fixed maturity securities available-for-sale reclassified from other comprehensive income (before taxes)	0	0	0
Net impairment losses on securities available-for-sale	(878)	(63)	(186)
Net realized investment gains	4,349	8,997	8,017
Other income (affiliated $1,784, $834 and $912)	2,931	460	834
Total revenues	594,467	567,985	511,842
LOSSES AND EXPENSES
Losses and settlement expenses (affiliated $378,263, $326,130 and $298,798)	385,474	333,287	303,388
Dividends to policyholders (all affiliated)	9,504	10,864	8,630
Amortization of deferred policy acquisition costs (affiliated $97,551, $93,116 and $82,540)	99,042	94,728	84,275
Other underwriting expenses (affiliated $57,148, $65,575 and $60,981)	56,826	65,754	60,919
Interest expense (all affiliated)	337	384	900
Other expense (affiliated $1,570, $1,356 and $2,097)	2,377	2,115	2,097
Total losses and expenses	553,560	507,132	460,209
Income before income tax expense	40,907	60,853	51,633
INCOME TAX EXPENSE
Current	7,280	16,927	11,594
Deferred	3,635	407	2,073
Total income tax expense	10,915	17,334	13,667
Net income	$ 29,992	$ 43,519	$ 37,966
Net income per common share - basic and diluted	$ 2.23	$ 3.33	$ 2.95
Average number of common shares outstanding - basic and diluted (in shares)	13,470,623	13,086,612	12,886,667