Investments (Trading Account Assets) (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Major Types of Investment Securities [Line Items]
Amortized Cost	$ 66,416	$ 65,326
Fair Value	67,862	64,612
Fixed maturities
Major Types of Investment Securities [Line Items]
Amortized Cost	50,585	50,565
Fair Value	45,663	46,364
Equity securities
Major Types of Investment Securities [Line Items]
Amortized Cost	15,831	14,761
Fair Value	$ 22,199	$ 18,248