Fair Value Measurements Financial Instruments not Carried at Fair Value (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014	Dec. 31, 2013
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities held-to-maturity	$ 254,048		$ 232,891
Mortgage loans	599		628
Policy loans	58,968		54,032
Other Short-term Investments	254		0
Cash and cash equivalents, at carrying value	42,831	$ 56,986	50,708	$ 54,593
Liability for future policy benefits individual and group annuities	$ 63,489		59,727
Mortgage Loans on Real Estate, Interest Rate	6.30%	6.40%
Mortgage loan maturity lower end range	1 year	1 year
Mortgage loan maturity higher end range	30 years	30 years
Mortgage loans interest rate used to estimate fair value	6.20%
Insurance policy loans interest rate	7.70%	7.70%
Fair value minimum interest rate of investment contract	1.60%
Fair value maximum rate of investment contract	5.71%
Carrying (Reported) Amount, Fair Value Disclosure [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities held-to-maturity	$ 247,829		224,932
Mortgage loans	599		628
Policy loans	58,968		54,032
Other Short-term Investments	254		0
Cash and cash equivalents, at carrying value	42,831		50,708
Liability for future policy benefits individual and group annuities	45,737		42,837
Estimate of Fair Value, Fair Value Disclosure [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities held-to-maturity	254,048		232,891
Mortgage loans	623		652
Policy loans	58,968		54,032
Other Short-term Investments	254		0
Cash and cash equivalents, fair value disclosure	42,831		50,708
Liability for future policy benefits individual and group annuities	$ 37,399		$ 37,978