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Investments (Schedule of Unrealized Appreciation) (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Investments [Abstract]    
Net change in unrealized appreciation on available-for-sale securities before deferred tax $ (4,243) $ (153)
Deferred income tax 1,442 52
Net change in unrealized appreciation on available-for-sale securities $ (2,801) $ (101)