Consolidated Statements of Comprehensive Income (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Premiums:
Life insurance	$ 42,223	$ 39,945	$ 81,637	$ 77,351
Accident and health insurance	406	417	755	830
Property insurance	1,205	1,234	2,382	2,511
Net investment income	9,265	7,612	17,654	15,189
Realized investment gains, net	82	246	113	344
Decrease in fair value of warrants	0	37	0	73
Other income	427	111	613	209
Total revenue	53,608	49,602	103,154	96,507
Insurance benefits paid or provided:
Claims and surrenders	16,660	16,109	31,466	30,863
Increase in future policy benefit reserves	17,896	16,751	34,855	30,892
Policyholders' dividends	2,235	2,281	4,309	4,155
Total insurance benefits paid or provided	36,791	35,141	70,630	65,910
Commissions	10,429	9,731	19,487	18,395
Other general expenses	7,342	6,342	14,041	12,958
Capitalization of deferred policy acquisition costs	(7,672)	(7,044)	(14,034)	(12,983)
Amortization of deferred policy acquisition costs	4,363	4,433	8,989	8,559
Amortization of cost of customer relationships acquired	560	660	1,138	1,236
Total benefits and expenses	51,813	49,263	100,251	94,075
Income before federal income tax	1,795	339	2,903	2,432
Federal income tax expense (benefit)	488	(64)	740	517
Net income	1,307	403	2,163	1,915
Unrealized gains (losses) on available-for-sale securities:
Unrealized holding gains (losses) arising during period	(25,544)	6,003	(25,448)	8,564
Reclassification adjustments for gains included in net income	(73)	(121)	(104)	(207)
Unrealized gains (losses) on available-for-sale securities, net	(25,617)	5,882	(25,552)	8,357
Income tax expense (benefit) on unrealized gains on available-for-sale securities	(8,953)	2,063	(8,926)	2,959
Other comprehensive income (loss)	(16,664)	3,819	(16,626)	5,398
Comprehensive income (loss)	$ (15,357)	$ 4,222	$ (14,463)	$ 7,313
Common Stock Class A [Member]
Earnings Per Share [Abstract]
Basic earnings per share (in dollars per share)	$ 0.03	$ 0.01	$ 0.05	$ 0.04
Diluted earnings per share (in dollars per share)	$ 0.03	$ 0.01	$ 0.05	$ 0.04
Common Stock Class B [Member]
Earnings Per Share [Abstract]
Basic earnings per share (in dollars per share)	$ 0.01	$ 0.00	$ 0.02	$ 0.02
Diluted earnings per share (in dollars per share)	$ 0.01	$ 0.00	$ 0.02	$ 0.02