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Accumulated Other Comprehensive Loss Schedule of Accumulated Other Comprehensive Income (Loss) (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Changes in accumulated other comprehensive loss      
Balance, beginning of year $ (1,640)    
Other comprehensive (loss) income (451) (381) 4,482
Balance, end of year (2,091) (1,640)  
Accumulated Translation Adjustment [Member]
     
Changes in accumulated other comprehensive loss      
Balance, beginning of year (2,354)    
Other comprehensive (loss) income (4,361)    
Balance, end of year (6,715)    
Accumulated Net Unrealized Investment Gain (Loss) [Member]
     
Changes in accumulated other comprehensive loss      
Balance, beginning of year 714    
Other comprehensive (loss) income 3,910    
Balance, end of year $ 4,624