Investments (Trading Account Assets) (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Major Types of Investment Securities [Line Items]
Amortized Cost	$ 65,308	$ 46,937
Fair Value	65,815	49,661
Fixed maturities
Major Types of Investment Securities [Line Items]
Amortized Cost	50,547	43,490
Fair Value	47,567	44,121
Equity securities
Major Types of Investment Securities [Line Items]
Amortized Cost	14,761	3,447
Fair Value	$ 18,248	$ 5,540