Consolidated Statements of Comprehensive Income (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Premiums:
Life insurance	$ 45,234	$ 42,091	$ 131,298	$ 123,728
Accident and health insurance	394	380	1,135	1,135
Property insurance	1,295	1,276	3,832	3,658
Net investment income	10,384	9,570	30,373	27,224
Realized investment gains (losses), net	(222)	30	(351)	143
Other income	145	269	477	882
Total revenue	57,230	53,616	166,764	156,770
Insurance benefits paid or provided:
Claims and surrenders	17,326	16,763	50,451	48,229
Increase in future policy benefit reserves	19,307	17,398	56,984	52,253
Policyholders' dividends	2,573	2,362	7,087	6,671
Total insurance benefits paid or provided	39,206	36,523	114,522	107,153
Commissions	11,116	9,940	31,429	29,427
Other general expenses	6,029	6,163	19,979	20,204
Capitalization of deferred policy acquisition costs	(8,126)	(7,067)	(22,617)	(21,101)
Amortization of deferred policy acquisition costs	5,276	4,758	15,378	13,747
Amortization of cost of customer relationships acquired	453	681	1,598	1,819
Total benefits and expenses	53,954	50,998	160,289	151,249
Income before federal income tax	3,276	2,618	6,475	5,521
Federal income tax expense	952	794	1,804	1,534
Net income	2,324	1,824	4,671	3,987
Unrealized gains (losses) on available-for-sale securities:
Unrealized holding gains (losses) arising during period	(1,628)	(4,128)	24,764	(29,576)
Reclassification adjustments for (gains) losses included in net income	227	(84)	332	(188)
Unrealized gains (losses) on available-for-sale securities, net	(1,401)	(4,212)	25,096	(29,764)
Income tax expense (benefit) on unrealized gains (losses) on available-for-sale securities	(490)	(1,474)	8,804	(10,400)
Other comprehensive income (loss)	(911)	(2,738)	16,292	(19,364)
Comprehensive income (loss)	$ 1,413	$ (914)	$ 20,963	$ (15,377)
Common Stock Class A [Member]
Earnings Per Share [Abstract]
Basic earnings per share (in dollars per share)	$ 0.04	$ 0.03	$ 0.09	$ 0.08
Diluted earnings per share (in dollars per share)	$ 0.04	$ 0.03	$ 0.09	$ 0.08
Common Stock Class B [Member]
Earnings Per Share [Abstract]
Basic earnings per share (in dollars per share)	$ 0.03	$ 0.02	$ 0.05	$ 0.04
Diluted earnings per share (in dollars per share)	$ 0.03	$ 0.02	$ 0.05	$ 0.04