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Debt - Additional Information (Detail)
0 Months Ended 3 Months Ended 9 Months Ended 9 Months Ended 3 Months Ended 9 Months Ended 9 Months Ended
Aug. 27, 2013
USD ($)
Sep. 30, 2014
USD ($)
Sep. 30, 2014
USD ($)
Dec. 31, 2013
USD ($)
Sep. 30, 2014
Cross Currency Interest Rate Contract [Member]
Minimum [Member]
Sep. 30, 2014
Cross Currency Interest Rate Contract [Member]
Maximum [Member]
Sep. 30, 2014
Flextor, Inc. ("Flextor") [Member]
USD ($)
Sep. 30, 2014
Flextor, Inc. ("Flextor") [Member]
CAD
Sep. 30, 2014
Flextor, Inc. ("Flextor") [Member]
Minimum [Member]
USD ($)
Sep. 30, 2014
Flextor, Inc. ("Flextor") [Member]
Maximum [Member]
Sep. 30, 2014
Flextor, Inc. ("Flextor") [Member]
Forward Contracts [Member]
CAD
Sep. 30, 2014
Flextor, Inc. ("Flextor") [Member]
Bank Guarantee Facility [Member]
CAD
Sep. 30, 2014
Flextor, Inc. ("Flextor") [Member]
Variable Line Of Credit [Member]
CAD
Sep. 30, 2014
Aarding Thermal Acoustics B.V. ("Aarding") [Member]
Sep. 30, 2014
Aarding Thermal Acoustics B.V. ("Aarding") [Member]
Aug. 17, 2012
Aarding Thermal Acoustics B.V. ("Aarding") [Member]
EUR (€)
Sep. 30, 2014
Aarding Thermal Acoustics B.V. ("Aarding") [Member]
Minimum [Member]
USD ($)
Aug. 17, 2012
Aarding Thermal Acoustics B.V. ("Aarding") [Member]
Minimum [Member]
Sep. 30, 2014
Aarding Thermal Acoustics B.V. ("Aarding") [Member]
Maximum [Member]
USD ($)
Sep. 30, 2014
Bank Guarantee Facility [Member]
Aarding Thermal Acoustics B.V. ("Aarding") [Member]
USD ($)
Sep. 30, 2014
Bank Guarantee Facility [Member]
Aarding Thermal Acoustics B.V. ("Aarding") [Member]
EUR (€)
Dec. 31, 2013
Bank Guarantee Facility [Member]
Aarding Thermal Acoustics B.V. ("Aarding") [Member]
USD ($)
Dec. 31, 2013
Bank Guarantee Facility [Member]
Aarding Thermal Acoustics B.V. ("Aarding") [Member]
EUR (€)
Aug. 17, 2012
Bank Guarantee Facility [Member]
Aarding Thermal Acoustics B.V. ("Aarding") [Member]
EUR (€)
Sep. 30, 2014
Bank Overdrafts [Member]
Aarding Thermal Acoustics B.V. ("Aarding") [Member]
USD ($)
Sep. 30, 2014
Bank Overdrafts [Member]
Aarding Thermal Acoustics B.V. ("Aarding") [Member]
EUR (€)
Dec. 31, 2013
Bank Overdrafts [Member]
Aarding Thermal Acoustics B.V. ("Aarding") [Member]
USD ($)
Dec. 31, 2013
Bank Overdrafts [Member]
Aarding Thermal Acoustics B.V. ("Aarding") [Member]
EUR (€)
Aug. 17, 2012
Bank Overdrafts [Member]
Aarding Thermal Acoustics B.V. ("Aarding") [Member]
EUR (€)
Sep. 30, 2014
Term Loan [Member]
USD ($)
Dec. 31, 2013
Term Loan [Member]
USD ($)
Aug. 27, 2013
Term Loan [Member]
USD ($)
Aug. 27, 2013
U.S. Dollar Revolving Loans [Member]
USD ($)
Aug. 27, 2013
Multi-currency Revolving Credit Facility [Member]
USD ($)
Sep. 30, 2014
Base Rate [Member]
Minimum [Member]
Sep. 30, 2014
Base Rate [Member]
Maximum [Member]
Sep. 30, 2014
Federal Funds Rate [Member]
Sep. 30, 2014
One-Month LIBOR [Member]
Sep. 30, 2014
Prime Rate [Member]
Flextor, Inc. ("Flextor") [Member]
Line of Credit Facility [Line Items]                                                                              
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                                                                            
Aggregate principal amount outstanding under the credit facilities                                       6,600,000 5,200,000 3,400,000 2,500,000   3,500,000 2,700,000 4,900,000 3,500,000   1,200,000 1,300,000                
Unused credit availability under credit facility   63,800,000 63,800,000 66,700,000                                                                      
Revolving loan expiration date Aug. 27, 2018                                                                            
Companies consolidated leverage ratio, Base Rate         0.50% 1.50%                                                         1.50% 2.50%     0.50%
Interest rate, basis spread                                                                         0.50% 1.00%  
Weighted average interest rate on outstanding borrowings   2.23% 2.23% 2.23%                   2.82% 2.82%                                                
Maximum consolidated leverage ratio   2.75 2.75                                                                        
Minimum fixed charge coverage ratio     1.25                                                                        
Increased interest rate of loan due to default   2.00% 2.00%                                                                        
Other expenses for credit agreement   2,700,000 2,700,000                                                                        
Capitalized deferred financing costs   500,000 500,000 600,000                                                                      
Deferred charges Other asset   (1,610,000) (1,610,000) (1,918,000)                                                                      
Amortization expense   100,000 400,000                                                                        
Facilities agreement, amount               5,500,000     500,000 2,500,000 2,500,000     10,500,000 7,000,000   10,500,000         7,000,000         3,500,000                    
Working capital ratio, minimum             125.00% 125.00%                                                              
Working capital, minimum                 1,000,000                                                            
Adjusted tangible net worth ratio, maximum                   2.50                                                          
Adjusted tangible net worth, minimum             1,300,000                                                                
Penalties on cancellation of agreement               0                                                              
Borrowers solvency ratio                                   30.00%                                          
Maximum debt as proportion of EBITDA                               3.0                                              
Debt instrument variable interest rate description                           3 months Euribor plus 265 basis points 3 months Euribor plus 195 basis points