Investments (Securities Pledged) (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Financial Instruments Owned and Pledged as Collateral [Line Items]
Total securities pledged	$ 10,218	$ 5,098
Fixed maturities, available-for-sale
Financial Instruments Owned and Pledged as Collateral [Line Items]
Total securities pledged	10,218	5,098
Trading account assets
Financial Instruments Owned and Pledged as Collateral [Line Items]
Total securities pledged	$ 0	$ 0