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Provision for Taxes (Details) (USD $)
In Thousands, unless otherwise specified
6 Months Ended
Jun. 30, 2013
Jul. 31, 2013
Dec. 31, 2012
Dec. 31, 2010
Provision for Taxes (Textual) [Abstract]        
Foreign earnings expected to be repatriated       $ 25,475
Foreign earnings successfully repatriated 13,757      
Fair value of net deferred tax assets 0      
Unrecognized tax liabilities 0   0  
Interest or penalties recorded for income taxes 0      
Income tax refund   132    
Income taxes related to repatriation of cash $ 0