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Acquisitions Goodwill and Other Intangible Assets - Additional Information (Detail)
 3 Months Ended 1 Months Ended 3 Months Ended
Mar. 31, 2013
USD ($)
Mar. 31, 2013
Milestone Payment Arrangement
EUR (€)
Dec. 31, 2011
Novozymes Biopharma Sweden Ab
USD ($)
Installment
Mar. 31, 2012
Novozymes Biopharma Sweden Ab
USD ($)
Mar. 31, 2013
Novozymes Biopharma Sweden Ab
USD ($)
Dec. 31, 2012
Novozymes Biopharma Sweden Ab
USD ($)
Dec. 20, 2011
Novozymes Biopharma Sweden Ab
USD ($)
Dec. 20, 2011
Novozymes Biopharma Sweden Ab
EUR (€)
Mar. 31, 2013
Novozymes Biopharma Sweden Ab
Earn Out Payment
EUR (€)
Dec. 20, 2011
Novozymes Biopharma Sweden Ab
Earn Out Payment
USD ($)
Dec. 20, 2011
Novozymes Biopharma Sweden Ab
Earn Out Payment
EUR (€)
Mar. 31, 2013
Novozymes Biopharma Sweden Ab
Milestone Payment Arrangement
EUR (€)
Dec. 20, 2011
Novozymes Biopharma Sweden Ab
Milestone Payment Arrangement
USD ($)
Dec. 20, 2011
Novozymes Biopharma Sweden Ab
Milestone Payment Arrangement
EUR (€)
Dec. 20, 2011
Novozymes Biopharma Sweden Ab
Technology Transfer
USD ($)
Dec. 20, 2011
Novozymes Biopharma Sweden Ab
Technology Transfer
EUR (€)
Business Acquisition [Line Items]                                
Payment for acquisition of business             $ 26,400,000 € 20,310,000                
Business acquisition, contingent Payment   1,000,000         5,200,000 4,000,000 1,000,000 1,300,000 1,000,000 1,000,000 1,300,000 1,000,000 1,300,000 1,000,000
Business acquisition, number of milestone payments     2                          
Business acquisition, probability-weighted fair value of contingent consideration         1,013,000 2,353,000                    
Business acquisition, fair value of the net assets acquired     28,922,000                          
Business acquisition, consideration transferred     28,495,000                          
Gain on bargain purchase     427,000 314,000                        
Amortization expense 251,000                              
Expected amortization expense in 2013 (excluding the three months ended March 31, 2013) 1,000,000                              
Expected amortization expense in 2014 1,000,000                              
Expected amortization expense in 2015 1,000,000                              
Expected amortization expense in 2016 1,000,000                              
Expected amortization expense in 2017 $ 1,000,000