Summary of Significant Accounting Policies Deferred Acquisition Costs and Cost of Customer Relationships Acquired (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2018	Dec. 31, 2017
Deferred Policy Acquisition Costs and Cost of Customer Relationship Acquired [Abstract]
First year commissions, percentage of capitalized deferred acquisition costs									93.00%
New business expense, percentage of capitalized deferred acquisition costs									7.00%
Number of years of available premiums									50 years
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
Balance at beginning of period				$ 167,063				$ 167,790	$ 167,063	$ 167,790	$ 163,692
Deferred Policy Acquisition Costs, Capitalized Amount									22,695	29,120	32,732
Amortization of deferred policy acquisition costs									(34,235)	(29,690)	(28,515)
Effect of Unrealized (gains) losses									224	(157)	(119)
Balance at end of period	$ 155,747				$ 167,063				155,747	167,063	167,790
Change in Accounting Estimate [Line Items]
Deferred policy acquisition costs	155,747			167,063	167,063			167,790	167,063	167,790	163,692	$ 155,747	$ 167,063
Life insurance												1,179,946	$ 1,133,875
Decrease in future policy benefit reserves									47,947	76,029	75,881
Amortization of deferred policy acquisition costs									34,235	29,690	28,515
Income before federal income tax									2,002	(2,986)	5,483
Federal income tax expense (benefit)	(596)	$ 12,671	$ (1,553)	2,542	35,069	$ (339)	$ 1,524	(1,113)	13,064	35,141	3,514
Net income	(1,432)	$ (7,109)	$ (2,558)	$ 37	$ (44,204)	$ 3,449	$ 572	$ 2,056	(11,062)	$ (38,127)	$ 1,969
Impact due to System Conversion [Member]
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
Amortization of deferred policy acquisition costs									(4,339)
Balance at end of period	4,339								4,339
Change in Accounting Estimate [Line Items]
Deferred policy acquisition costs	$ 4,339								4,339			4,339
Life insurance												$ 10,197
Decrease in future policy benefit reserves									(10,197)
Amortization of deferred policy acquisition costs									4,339
Income before federal income tax									5,858
Federal income tax expense (benefit)									1,230
Net income									$ 4,628