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, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2019	Dec. 31, 2018
Deferred Policy Acquisition Costs and Cost of Customer Relationship Acquired [Abstract]
First year commissions, percentage of capitalized deferred acquisition costs									93.60%
New business expense, percentage of capitalized deferred acquisition costs									6.40%
Number of years of available premiums									50 years
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
Balance at beginning of period				$ 155,747				$ 167,063	$ 155,747	$ 167,063	$ 167,790
Deferred Policy Acquisition Costs, Capitalized Amount									22,255	22,695	29,120
Amortization of deferred policy acquisition costs									(28,268)	(34,235)	(29,690)
Effect of Unrealized (gains) losses									(485)	224	(157)
Balance at end of period	$ 149,249				$ 155,747				149,249	155,747	167,063
Change in Accounting Estimate [Line Items]
Deferred policy acquisition costs	149,249			155,747	155,747			167,063	149,249	155,747	167,063	$ 149,249	$ 155,747
Life insurance												1,218,757	1,179,946
Decrease in future policy benefit reserves									41,712	47,947	76,029
Amortization of deferred policy acquisition costs									28,268	34,235	29,690
Income before federal income tax									5,745	2,002	(2,986)
Federal income tax expense (benefit)	(23)	$ 86	$ 1,242	5,810	(596)	$ 12,671	$ (1,553)	2,542	7,115	13,064	35,141
Net income (loss)	4,951	$ 2,046	$ (4,565)	(3,802)	(1,432)	$ (7,109)	$ (2,558)	$ 37	(1,370)	(11,062)	$ (38,127)
Unusual or Infrequent Item, or Both [Member]
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
Balance at beginning of period				4,339					4,339
Amortization of deferred policy acquisition costs									(1,396)	(4,339)
Balance at end of period	1,396				4,339				1,396	4,339
Change in Accounting Estimate [Line Items]
Deferred policy acquisition costs	$ 1,396			$ 4,339	$ 4,339				1,396	4,339		1,396	4,339
Life insurance												$ 2,299	$ 10,197
Decrease in future policy benefit reserves									(2,299)	(10,197)
Amortization of deferred policy acquisition costs									1,396	4,339
Income before federal income tax									903	5,858
Federal income tax expense (benefit)									190	1,230
Net income (loss)									$ 713	$ 4,628