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Intangible Assets (Details 1) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Schedule of future amortization expenses    
2014 $ 1,615  
2015 1,473  
2016 1,384  
2017 1,155  
2018 1,138  
Thereafter 4,984  
Net Carrying Amount $ 11,749 $ 7,906