Amount of life insurance issued and outstanding ceded to other entity, as disclosed in supplementary reinsurance information. Includes, but is not limited to, dividend and adjustment to face value.

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Amount, before effect of reinsurance, of life insurance issued and outstanding, as disclosed in supplementary reinsurance information. Includes, but is not limited to, dividend and adjustment to face value.

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Schedule IV - Reinsurance (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
Reinsurance Premiums for Insurance Companies, by Product Segment [Line Items]
Direct premiums, life insurance in force	$ 783,979,673				$ 767,001,938				$ 783,979,673	$ 767,001,938	$ 731,822,070
Direct premiums	673,605	$ 670,222	$ 667,191	$ 656,087	650,906	$ 646,079	$ 637,426	$ 627,698	2,667,104	2,562,109	2,444,268
Ceded premiums, life insurance in force	682,708,797				668,446,638				682,708,797	668,446,638	643,364,460
Ceded premiums	392,290	$ 391,175	$ 403,449	$ 394,249	397,318	$ 397,641	$ 406,043	$ 399,769	1,581,164	1,600,771	1,600,559
Net life insurance in force	$ 101,270,876				$ 98,555,300				101,270,876	98,555,300	88,457,610
Premiums earned, net									1,085,940	961,338	843,709
Life Insurance [Member]
Reinsurance Premiums for Insurance Companies, by Product Segment [Line Items]
Direct premiums									2,665,947	2,560,885	2,442,968
Ceded premiums									1,580,815	1,600,399	1,600,125
Premiums earned, net									1,085,132	960,486	842,843
Accident and Health Insurance [Member]
Reinsurance Premiums for Insurance Companies, by Product Segment [Line Items]
Direct premiums									1,157	1,224	1,300
Ceded premiums									349	372	434
Premiums earned, net									$ 808	$ 852	$ 866