Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Premiums:
Life insurance	$ 42,773	$ 42,899
Accident and health insurance	390	375
Property insurance	1,276	1,292
Net investment income	11,731	11,069
Realized investment losses, net	(1,796)	(71)
Other income	151	296
Total revenue	54,525	55,860
Insurance benefits paid or provided:
Claims and surrenders	19,005	19,403
Increase in future policy benefit reserves	15,990	17,298
Policyholders' dividends	1,549	2,309
Total insurance benefits paid or provided	36,544	39,010
Commissions	9,468	9,859
Other general expenses	9,318	7,551
Capitalization of deferred policy acquisition costs	(6,264)	(6,856)
Amortization of deferred policy acquisition costs	6,708	5,299
Amortization of cost of customer relationships acquired	545	647
Total benefits and expenses	56,319	55,510
Income before federal income tax	(1,794)	350
Federal income tax (benefit) expense	155	(75)
Net income	(1,949)	425
Unrealized gains on available-for-sale securities:
Unrealized holding gains arising during period	11,333	5,007
Reclassification adjustments for losses included in net income	1,796	36
Unrealized gains on available-for-sale securities, net	13,129	5,043
Income tax expense on unrealized gains (losses) on available-for-sale securities	4,595	1,765
Other comprehensive income	8,534	3,278
Comprehensive income	$ 6,585	$ 3,703
Common Stock Class A [Member]
Earnings Per Share [Abstract]
Basic earnings per share (in dollars per share)	$ (0.04)	$ 0.01
Diluted earnings per share (in dollars per share)	(0.04)	0.01
Common Stock Class B [Member]
Earnings Per Share [Abstract]
Basic earnings per share (in dollars per share)	(0.02)	0.00
Diluted earnings per share (in dollars per share)	$ (0.02)	$ 0.00