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Debt - Additional Information (Detail)
 9 Months Ended 9 Months Ended 9 Months Ended 9 Months Ended 9 Months Ended 9 Months Ended 3 Months Ended
Sep. 30, 2013
USD ($)
Aug. 27, 2013
USD ($)
Dec. 31, 2012
USD ($)
Sep. 30, 2013
Majority Owned Subsidiary [Member]
USD ($)
Sep. 30, 2013
Majority Owned Subsidiary [Member]
EUR (€)
Aug. 17, 2012
Majority Owned Subsidiary [Member]
EUR (€)
Sep. 30, 2013
Flextor Inc [Member]
USD ($)
Sep. 30, 2013
Flextor Inc [Member]
CAD
Sep. 30, 2013
Flextor Inc [Member]
Forward Contracts [Member]
CAD
Sep. 30, 2013
Flextor Inc [Member]
Variable Line Of Credit [Member]
CAD
Sep. 30, 2013
Flextor Inc [Member]
Maximum [Member]
Sep. 30, 2013
Flextor Inc [Member]
Minimum [Member]
USD ($)
Sep. 30, 2013
Eurocurrency Rate [Member]
Maximum [Member]
Sep. 30, 2013
Eurocurrency Rate [Member]
Minimum [Member]
Sep. 30, 2013
Federal Funds Rate [Member]
Sep. 30, 2013
One-Month LIBOR [Member]
Sep. 30, 2013
Base Rate [Member]
Maximum [Member]
Sep. 30, 2013
Base Rate [Member]
Minimum [Member]
Sep. 30, 2013
Senior Secured Term Loan [Member]
USD ($)
Aug. 27, 2013
Senior Secured Term Loan [Member]
USD ($)
Sep. 30, 2013
U.S.dollar Revolving Credit Facility [Member]
USD ($)
Aug. 27, 2013
U.S.dollar Revolving Credit Facility [Member]
USD ($)
Aug. 27, 2013
Multi-currency Revolving Credit Facility [Member]
USD ($)
Sep. 30, 2013
Amended and Restated Credit Agreement [Member]
Sep. 30, 2013
First Twelve Installments [Member]
USD ($)
Sep. 30, 2013
Second Four Installments [Member]
USD ($)
Sep. 30, 2013
Third Three Installments [Member]
USD ($)
Line of Credit Facility [Line Items]                                                      
Date of entering into credit agreement Aug. 27, 2013                                             Aug. 17, 2010      
Senior secured credit facility                                       $ 65,000,000   $ 70,500,000 $ 19,500,000        
Increased credit facility commitment for either Revolving credit facility or term loan facility   30,000,000                                                  
Line of credit                 500,000 2,500,000                 65,000,000   52,000,000            
Aggregate principal amount outstanding under the credit facilities 90,000,000   0       0                                        
Interest rate, basis spread             0.50% 0.50%         2.50% 1.50%     1.50% 0.50%                  
Base rate, basis spread                             0.50% 1.00%                      
Base rate, description "Base Rate" means the highest of (a) the federal funds rate plus 0.5%, (b) the Agent's prime lending rate, and (c) one-month LIBOR plus 1.00%.                                                    
Debt instrument, fees paid 2,730,000                                                    
Revolving loan expiration date Aug. 27, 2018                                                    
Quarterly repayment of term loans                                                 1,200,000 1,600,000 2,000,000
Maximum consolidated leverage ratio 2.75                                                    
Minimum fixed charge coverage ratio 1.25                                                    
Increased interest rate of loan due to default 2.00%                                                    
Debt facility agreement amount due to subsidiary               5,500,000                                      
Debt bank guarantee facility       1,500,000 1,100,000 3,500,000 600,000 2,500,000                                      
Working capital ratio             1.25% 1.25%                                      
Working capital             1,000,000                                        
Adjusted tangible net worth ratio                     2.50                                
Adjusted tangible net worth                       1,300,000                              
Debt facility agreement amount due to subsidiary           7,000,000                                          
Debt overdraft guarantee facility       $ 3,500,000 € 2,600,000 € 3,500,000                                          
Borrowers solvency ratio           30.00%                                          
Maximum debt as proportion of EBITDA           3                                          
Debt instrument variable interest rate description       3 months Euribor plus 195 basis points 3 months Euribor plus 195 basis points