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Intangible Assets (Details Textual) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Intangible Assets (Textual) [Abstract]    
Amortization expense $ 61 $ 157
Minimum
   
Intangible Assets (Textual) [Abstract]    
Intangible assets, useful life 3 years  
Maximum
   
Intangible Assets (Textual) [Abstract]    
Intangible assets, useful life 5 years