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Debt - Additional Information (Detail)
 1 Months Ended 6 Months Ended 6 Months Ended 6 Months Ended 6 Months Ended 6 Months Ended
Mar. 31, 2013
USD ($)
Jun. 30, 2013
USD ($)
Mar. 22, 2013
USD ($)
Dec. 31, 2012
USD ($)
Aug. 06, 2010
USD ($)
Jun. 30, 2013
Majority Owned Subsidiary [Member]
USD ($)
Jun. 30, 2013
Majority Owned Subsidiary [Member]
EUR (€)
Aug. 17, 2012
Majority Owned Subsidiary [Member]
EUR (€)
Jun. 30, 2013
Flextor Inc [Member]
USD ($)
Jun. 30, 2013
Flextor Inc [Member]
CAD
Jun. 30, 2013
Flextor Inc [Member]
Forward Contracts [Member]
CAD
Jun. 30, 2013
Flextor Inc [Member]
Variable Line Of Credit [Member]
CAD
Jun. 30, 2013
Flextor Inc [Member]
Maximum [Member]
Jun. 30, 2013
Flextor Inc [Member]
Minimum [Member]
USD ($)
Jun. 30, 2013
London Interbank Offered Rate (LIBOR) [Member]
Jun. 30, 2013
Revolving credit facility [Member]
USD ($)
Jun. 30, 2013
Letter Of credit [Member]
USD ($)
Line of Credit Facility [Line Items]                                  
Previous limit on letters of credit     $ 20,000,000   $ 5,000,000                        
Credit facility limit under amended, Terms of the Bank Facility                               20,000,000  
Increased limit on letter of credit   23,500,000 25,000,000                           10,000,000
Maximum capital expenditures financial covenant   2,500,000                              
Minimum Fixed Charge Coverage Ratio   1.25                              
Maximum funded debt to EBITDA covenant   2                              
Credit agreement fees paid for amendment 116,000,000                                
Maximum total funded debt to EBITDA covenant   2.0                              
Extension of termination date of term loan   Apr. 01, 2014                              
Financial covenants which require compliance   Mar. 31, 2013                              
Extension of termination date of line of credit   Apr. 01, 2013                              
Excess in aggregate indebtedness   100,000                              
Line of Credit Facility, Amount Outstanding   0   0         0                
Bank facility covenant compliance Description   The Company was in compliance with all related financial and other restrictive covenants, and we expect continued compliance                              
Interest rate, description   Interest rate of LIBOR plus 2.0%                              
Outstanding trade letters of credit   1,500,000                              
Line of Credit Facility, Interest Rate                 0.50% 0.50%         2.00%    
Debt facility agreement amount due to subsidiary                   5,500,000              
Debt bank guarantee facility           3,100,000 2,400,000 3,500,000 500,000 2,500,000              
Line of credit                     500,000 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           $ 1,600,000 € 1,300,000 € 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