Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Premiums:
Life insurance	$ 47,351	$ 46,748	$ 90,124	$ 89,647
Accident and health insurance	395	421	785	796
Property insurance	1,261	1,291	2,537	2,583
Net investment income	12,000	11,201	23,731	22,270
Realized investment losses, net	(26)	(8)	(1,822)	(79)
Other income	256	426	407	722
Total revenue	61,237	60,079	115,762	115,939
Insurance benefits paid or provided:
Claims and surrenders	20,969	19,240	39,974	38,643
Increase in future policy benefit reserves	17,675	19,760	33,665	37,058
Policyholders' dividends	1,816	2,540	3,365	4,849
Total insurance benefits paid or provided	40,460	41,540	77,004	80,550
Commissions	10,777	10,805	20,245	20,664
Other general expenses	8,566	10,445	17,884	17,996
Capitalization of deferred policy acquisition costs	(8,103)	(8,036)	(14,367)	(14,892)
Amortization of deferred policy acquisition costs	6,827	5,647	13,535	10,946
Amortization of cost of customer relationships acquired	402	516	947	1,163
Total benefits and expenses	58,929	60,917	115,248	116,427
Income before federal income tax	2,308	(838)	514	(488)
Federal income tax (benefit) expense	989	1,076	1,144	1,001
Net income	1,319	(1,914)	(630)	(1,489)
Unrealized gains on available-for-sale securities:
Unrealized holding gains arising during period	16,374	(16,778)	27,707	(11,771)
Reclassification adjustments for losses included in net income	20	8	1,816	44
Unrealized gains on available-for-sale securities, net	16,394	(16,770)	29,523	(11,727)
Income tax expense on unrealized gains (losses) on available-for-sale securities	5,738	(5,869)	10,333	(4,104)
Other comprehensive income	10,656	(10,901)	19,190	(7,623)
Comprehensive income	$ 11,975	$ (12,815)	$ 18,560	$ (9,112)
Common Stock Class A [Member]
Earnings Per Share [Abstract]
Basic earnings per share (in dollars per share)	$ 0.03	$ (0.04)	$ (0.01)	$ (0.03)
Diluted earnings per share (in dollars per share)	0.03	(0.04)	(0.01)	(0.03)
Common Stock Class B [Member]
Earnings Per Share [Abstract]
Basic earnings per share (in dollars per share)	0.01	(0.02)	(0.01)	(0.02)
Diluted earnings per share (in dollars per share)	$ 0.01	$ (0.02)	$ (0.01)	$ (0.02)