Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Premiums:
Life insurance	$ 47,513	$ 47,219	$ 137,637	$ 136,866
Accident and health insurance	385	387	1,170	1,183
Property insurance	1,274	1,302	3,811	3,885
Net investment income	12,320	11,325	36,051	33,595
Realized investment losses, net	46	(2,407)	(1,776)	(2,486)
Other income	203	298	610	1,020
Total revenue	61,741	58,124	177,503	174,063
Insurance benefits paid or provided:
Claims and surrenders	21,014	19,528	60,988	58,171
Increase in future policy benefit reserves	19,267	19,276	52,932	56,334
Policyholders' dividends	1,620	2,719	4,985	7,568
Total insurance benefits paid or provided	41,901	41,523	118,905	122,073
Commissions	10,852	11,388	31,097	32,052
Other general expenses	5,076	6,958	22,960	24,954
Capitalization of deferred policy acquisition costs	(7,890)	(8,482)	(22,257)	(23,374)
Amortization of deferred policy acquisition costs	6,889	6,271	20,424	17,217
Amortization of cost of customer relationships acquired	641	605	1,588	1,768
Total benefits and expenses	57,469	58,263	172,717	174,690
Income before federal income tax	4,272	(139)	4,786	(627)
Federal income tax (benefit) expense	1,728	(242)	2,872	759
Net income	2,544	103	1,914	(1,386)
Unrealized gains on available-for-sale securities:
Unrealized holding gains arising during period	(1,261)	(1,803)	26,446	(13,574)
Reclassification adjustments for losses included in net income	(47)	2,405	1,769	2,449
Unrealized gains on available-for-sale securities, net	(1,308)	602	28,215	(11,125)
Income tax expense on unrealized gains (losses) on available-for-sale securities	(458)	210	9,875	(3,894)
Other comprehensive income	(850)	392	18,340	(7,231)
Comprehensive income	$ 1,694	$ 495	$ 20,254	$ (8,617)
Common Stock Class A [Member]
Earnings Per Share [Abstract]
Basic earnings per share (in dollars per share)	$ 0.05	$ 0.00	$ 0.04	$ (0.03)
Diluted earnings per share (in dollars per share)	0.05	0.00	0.04	(0.03)
Common Stock Class B [Member]
Earnings Per Share [Abstract]
Basic earnings per share (in dollars per share)	0.03	0.00	0.02	(0.02)
Diluted earnings per share (in dollars per share)	$ 0.03	$ 0.00	$ 0.02	$ (0.02)