Summary of Significant Accounting Policies Financial Statements (Details) - USD ($)		9 Months Ended	12 Months Ended
	Mar. 07, 2014	Sep. 30, 2015	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Goodwill and Intangible Asset Impairment			$ 0	$ 0
Participating Policies Additional Income Allocated, Percent			61.30%	60.70%
Statutory deposit with state insurance departments			$ 10,200,000	$ 10,300,000
Deferred acquisition costs			$ 165,362,000.000	$ 157,468,000.000	$ 146,691,000	$ 135,569,000
Minimum [Member]
Annuity Credit Rate Associated with Amortization Method of Present Value of Future Insurance Profits			3.00%
Interest Accrual Rate Associated with Amortization Method of Present Value of Future Insurance Profits			4.00%
Maximum [Member]
Annuity Credit Rate Associated with Amortization Method of Present Value of Future Insurance Profits			5.50%
Interest Accrual Rate Associated with Amortization Method of Present Value of Future Insurance Profits			8.25%
MGLIC [Member]
Business Acquisition, Date of Acquisition Agreement	Mar. 07, 2014
Payments to Acquire Businesses, Gross	$ 5,200,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets	12,000,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities	6,800,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net	$ 5,200,000
Goodwill, Acquired During Period		$ 100,000