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Acquisition (Details Textual) (Aarding Thermal Acoustics [Member])
3 Months Ended
Mar. 31, 2013
USD ($)
Mar. 31, 2013
EUR (€)
Acquisition (Textual) [Abstract]    
Cash paid on acquisition $ 24,400,000  
Company's common stock 763,673 763,673
Earn-out payment upon attainment of gross profit 7,200,000 5,500,000
Potential earn out consideration 0  
Prepaid compensation by the Company 5,300,000 4,000,000
Closing price of the company's common stock $ 7,400,000