Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Premiums:
Life insurance	$ 46,748	$ 44,667	$ 89,647	$ 86,064
Accident and health insurance	421	390	796	741
Property insurance	1,291	1,272	2,583	2,537
Net investment income	11,201	10,083	22,270	19,989
Realized investment losses, net	(8)	(73)	(79)	(129)
Other income	426	163	722	332
Total revenue	60,079	56,502	115,939	109,534
Insurance benefits paid or provided:
Claims and surrenders	19,240	16,668	38,643	33,125
Increase in future policy benefit reserves	19,760	19,979	37,058	37,677
Policyholders' dividends	2,540	2,412	4,849	4,514
Total insurance benefits paid or provided	41,540	39,059	80,550	75,316
Commissions	10,805	10,403	20,664	20,313
Other general expenses	10,445	7,448	17,996	13,950
Capitalization of deferred policy acquisition costs	(8,036)	(7,423)	(14,892)	(14,491)
Amortization of deferred policy acquisition costs	5,647	4,893	10,946	10,102
Amortization of cost of customer relationships acquired	516	614	1,163	1,145
Total benefits and expenses	60,917	54,994	116,427	106,335
Income before federal income tax	(838)	1,508	(488)	3,199
Federal income tax (benefit) expense	1,076	358	1,001	852
Net income	(1,914)	1,150	(1,489)	2,347
Unrealized gains on available-for-sale securities:
Unrealized holding gains arising during period	(16,778)	12,296	(11,771)	26,392
Reclassification adjustments for losses included in net income	8	73	44	105
Unrealized gains on available-for-sale securities, net	(16,770)	12,369	(11,727)	26,497
Income tax expense on unrealized gains (losses) on available-for-sale securities	(5,869)	4,340	(4,104)	9,294
Other comprehensive income	(10,901)	8,029	(7,623)	17,203
Comprehensive income	$ (12,815)	$ 9,179	$ (9,112)	$ 19,550
Common Stock Class A [Member]
Earnings Per Share [Abstract]
Basic earnings per share (in dollars per share)	$ (0.04)	$ 0.03	$ (0.03)	$ 0.05
Diluted earnings per share (in dollars per share)	(0.04)	0.03	(0.03)	0.05
Common Stock Class B [Member]
Earnings Per Share [Abstract]
Basic earnings per share (in dollars per share)	(0.02)	0.01	(0.02)	0.02
Diluted earnings per share (in dollars per share)	$ (0.02)	$ 0.01	$ (0.02)	$ 0.02