Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Premiums:
Life insurance	$ 42,313	$ 44,631	$ 83,293	$ 87,160
Accident and health insurance	345	301	668	592
Property insurance	1,146	1,198	2,307	2,407
Net investment income	15,315	13,811	29,111	27,582
Realized investment gains (losses), net	(2,869)	(178)	3,092	(753)
Other income	616	79	801	287
Total revenue	56,866	59,842	119,272	117,275
Insurance benefits paid or provided:
Claims and surrenders	27,024	20,617	50,057	41,768
Increase in future policy benefit reserves	9,472	16,555	21,771	31,163
Policyholders' dividends	1,423	1,614	2,605	2,921
Total insurance benefits paid or provided	37,919	38,786	74,433	75,852
Commissions	8,384	8,669	16,268	17,628
Other general expenses	11,949	14,466	26,081	20,973
Capitalization of deferred policy acquisition costs	(5,412)	(5,640)	(10,240)	(11,603)
Amortization of deferred policy acquisition costs	6,931	7,200	13,208	14,806
Amortization of cost of customer relationships acquired	418	472	837	1,151
Total benefits and expenses	60,189	63,953	120,587	118,807
Income (loss) before federal income tax	(3,323)	(4,111)	(1,315)	(1,532)
Federal income tax expense (benefit)	1,242	(1,553)	7,052	989
Net income (loss)	(4,565)	(2,558)	(8,367)	(2,521)
Unrealized gains (losses) on available-for-sale debt securities:
Unrealized holding gains (losses) arising during period	31,220	(12,329)	60,021	(30,427)
Reclassification adjustments for losses (gains) included in net income	(81)	87	23	346
Unrealized gains (losses) on available-for-sale debt securities, net	31,139	(12,242)	60,044	(30,081)
Income tax expense (benefit) on unrealized gains (losses) on available-for-sale securities	2,163	(2,571)	4,188	(6,306)
Other comprehensive income (loss)	28,976	(9,671)	55,856	(23,775)
Comprehensive income (loss)	$ 24,411	$ (12,229)	$ 47,489	$ (26,296)
Common Stock Class A [Member]
Earnings Per Share [Abstract]
Basic and diluted earnings (loss) per share (in dollars per share)	$ (0.09)	$ (0.05)	$ (0.17)	$ (0.05)
Common Stock Class B [Member]
Earnings Per Share [Abstract]
Basic and diluted earnings (loss) per share (in dollars per share)	$ (0.04)	$ (0.03)	$ (0.08)	$ (0.03)