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Intangible Assets (Details Textual) (USD $)
 3 Months Ended
Mar. 31, 2012
Mar. 31, 2013
Dec. 31, 2012
Finite Lived Intangible Assets [Line Items]      
Purchased Intangible Assets Net   $ 2,691,000 $ 2,915,000
Intangible Assets Accumulated Amortization   10,080,000 9,856,000
Intangible Assets (Textual) [Abstract]      
Impairment loss 22,800,000    
Acquired software licenses [Member]
      
Finite Lived Intangible Assets [Line Items]      
Purchased Intangible Assets Net   196,000 248,000
Intangible Assets Accumulated Amortization   $ 2,100,000 $ 2,100,000