Supplemental Schedule of Reinsurance Premiums for Insurance Companies: Supplemental Schedule of Reinsurance Premiums For Insurance Companies Table Text Block (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Life Insurance in Force, Gross	$ 12,063,911	$ 11,054,484	$ 11,415,328
Life Insurance in Force, Assumed	129,231	418,775	333,200
Life Insurance in Force, Ceded	6,365,993	6,128,608	6,493,122
Life Insurance in Force, Net	$ 5,827,149	$ 5,344,651	$ 5,255,406
Life Insurance in Force, Percentage Assumed to Net	2.20%	7.80%	6.30%
Direct Premiums Earned	$ 596,325	$ 557,395	$ 526,597
Assumed Premiums Earned	33,152	58,191	92,281
Ceded Premiums Earned	149,943	136,538	122,887
Premiums earned	$ 479,534	$ 479,048	$ 495,991
Premiums, Percentage Assumed to Net	6.90%	12.10%	18.60%
Accident and Health Insurance Product Line
Direct Premiums Earned	$ 513,814	$ 482,511	$ 461,336
Assumed Premiums Earned	28,822	52,063	85,627
Ceded Premiums Earned	126,613	116,163	102,053
Premiums earned	$ 416,023	$ 418,411	$ 444,910
Premiums, Percentage Assumed to Net	6.90%	12.40%	19.20%
Life and Annuity Insurance Product Line
Direct Premiums Earned	$ 46,699	$ 44,407	$ 46,416
Assumed Premiums Earned	4,330	6,128	6,654
Ceded Premiums Earned	23,078	20,214	20,820
Premiums earned	$ 27,951	$ 30,321	$ 32,250
Premiums, Percentage Assumed to Net	15.50%	20.20%	20.60%
Property, Liability and Casualty Insurance Product Line
Direct Premiums Earned	$ 35,812	$ 30,477	$ 18,845
Ceded Premiums Earned	252	161	14
Premiums earned	$ 35,560	$ 30,316	$ 18,831
Premiums, Percentage Assumed to Net	0.00%	0.00%	0.00%