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Commitments and Contingencies - Additional Information (Detail)
12 Months Ended
Dec. 31, 2013
USD ($)
Mar. 31, 2014
USD ($)
Apr. 29, 2014
Subsequent Event
EUR (€)
Apr. 29, 2014
Subsequent Event
Two Additional First Instance Cases
EUR (€)
Commitment And Contingencies [Line Items]        
Future minimum lease obligations, for the year ended December 31, 2014   $ 516,000    
Future minimum lease obligations, for the year ended December 31, 2015   204,000    
Change in control, if occurs, may require severance benefits payable   567,000    
Purchase commitments pending   12,200,000    
Legal costs paid in connection with class action lawsuits 250,000      
Amount of injunction bond to be posted     € 500,000 € 146,000