Investments (Trading Account Assets) (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Amortized Cost $ 15,506 $ 10,730
Fair Value 18,892 11,376
Corporate Debt Securities [Member]
   
Fair Value 14,183  
Asset-backed Securities [Member]
   
Fair Value 1,978 4,008
Commercial Mortgage Backed Securities [Member]
   
Fair Value 0 4,091
Fixed Maturities [Member]
   
Amortized Cost 14,118 7,647
Fair Value 16,162 8,099
Equity Securities [Member]
   
Amortized Cost 1,388 [1] 3,083 [1]
Fair Value $ 2,730 [1] $ 3,277 [1]
[1] _____________ Included in equity securities are perpetual preferred stock securities that have characteristics of both debt and equity securities.