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Debt - Additional Information (Detail)
1 Months Ended 3 Months Ended 6 Months Ended
Sep. 30, 2017
Jun. 15, 2017
EUR (€)
Mar. 22, 2017
USD ($)
Aug. 31, 2020
USD ($)
Aug. 31, 2020
EUR (€)
Jul. 31, 2020
USD ($)
Dec. 31, 2019
USD ($)
Sep. 30, 2019
USD ($)
Jun. 30, 2019
USD ($)
Jun. 30, 2020
USD ($)
Jun. 30, 2020
EUR (€)
Jun. 30, 2019
USD ($)
Jun. 30, 2020
EUR (€)
Jan. 31, 2020
EUR (€)
Dec. 31, 2019
EUR (€)
Sep. 30, 2019
EUR (€)
Jun. 30, 2019
EUR (€)
May 30, 2017
USD ($)
Debt Instrument [Line Items]                                    
Long-term debt             $ 611,025,000     $ 655,526,000                
Debt default, holder percent to declare all notes due, minimum                   30.00%     30.00%          
Term loan facility balance             630,635,000     $ 727,163,000                
Repayments under revolving credit facility                   106,992,000   $ 43,800,000            
Long-term debt             615,035,000     713,823,000                
Long-term debt, current             4,010,000     58,297,000                
European Operations [Member]                                    
Debt Instrument [Line Items]                                    
Long-term debt                   $ 11,300,000               $ 70,700,000
Senior Notes, 6.00%, due 2025 [Member] | Senior Notes [Member]                                    
Debt Instrument [Line Items]                                    
Debt Instrument, Face Amount   € 250,000,000.0         $ 14,400,000 $ 14,400,000 $ 22,400,000     22,400,000     € 13,000,000.0 € 13,000,000.0 € 20,000,000.0  
Debt instrument, interest rate stated, percentage   6.00%         6.00%     6.00%     6.00%   6.00%      
Debt instrument, repurchase amount             $ 14,100,000 14,100,000 21,800,000     21,800,000            
Long-term debt             12,900,000 12,900,000 19,400,000     19,400,000         17,400,000  
Net gain on extinguishment of debt             1,300,000 $ 1,300,000 2,400,000                  
Term loan facility balance             243,074,000     $ 244,008,000                
Long-term debt             $ 237,666,000     239,092,000                
Senior Secured Term Loan Facility [Member] | Senior Notes [Member]                                    
Debt Instrument [Line Items]                                    
Amount of term loan facility     $ 400,000,000.0                              
Line of credit facility maturity date     May 23, 2024                              
Repayments under term loan facility                   50,800,000                
Term loan facility balance                   349,200,000                
Amount outstanding                   4,800,000                
Senior Secured Term Loan Facility [Member] | London Interbank Offered Rate (LIBOR) [Member] | Minimum [Member] | Senior Notes [Member]                                    
Debt Instrument [Line Items]                                    
Debt instrument, basis spread on variable rate     0.00%                              
Senior Secured Term Loan Facility [Member] | London Interbank Offered Rate (LIBOR) [Member] | Maximum [Member] | Senior Notes [Member]                                    
Debt Instrument [Line Items]                                    
Debt instrument, basis spread on variable rate     4.00%                              
Senior Secured Term Loan Facility [Member] | Base Rate [Member] | Senior Notes [Member]                                    
Debt Instrument [Line Items]                                    
Debt instrument, basis spread on variable rate     2.00%                              
Senior Secured Term Loan Facility [Member] | Federal Funds Effective Swap Rate [Member] | Senior Notes [Member]                                    
Debt Instrument [Line Items]                                    
Debt instrument, basis spread on variable rate     0.50%                              
Senior Secured Term Loan Facility [Member] | One Month London Interbank Offered Rate (LIBOR) [Member] | Senior Notes [Member]                                    
Debt Instrument [Line Items]                                    
Debt instrument, basis spread on variable rate     1.00%                              
Senior Secured Term Loan Facility [Member] | One Month LIBOR Plus Margin [Member] | Senior Notes [Member]                                    
Debt Instrument [Line Items]                                    
Debt instrument, basis spread on variable rate     3.00%                              
Equipment Loan [Member]                                    
Debt Instrument [Line Items]                                    
Debt instrument, interest rate stated, percentage             2.74%               2.74%      
Long-term debt             $ 13,400,000               € 12,000,000.0      
Loans outstanding                 $ 11,900,000     $ 11,900,000         10,600,000  
Debt Instrument Redemption Period One [Member] | Senior Notes, 6.00%, due 2025 [Member] | Senior Notes [Member]                                    
Debt Instrument [Line Items]                                    
Redemption percentage   103.00%                                
Debt Instrument Redemption Period Two [Member] | Senior Notes, 6.00%, due 2025 [Member] | Senior Notes [Member]                                    
Debt Instrument [Line Items]                                    
Redemption percentage   101.50%                                
Debt Instrument Redemption Period Three [Member] | Senior Notes, 6.00%, due 2025 [Member] | Senior Notes [Member]                                    
Debt Instrument [Line Items]                                    
Redemption percentage   100.00%                                
Revolving Credit Facility [Member]                                    
Debt Instrument [Line Items]                                    
Commitment fees percentage 0.375%                                  
Outstanding borrowings and undrawn letters of credit threshold amount                   20,000,000                
Line of credit facility, commitment amount                   $ 160,000,000                
Revolving Credit Facility [Member] | Minimum [Member]                                    
Debt Instrument [Line Items]                                    
Commitment fees percentage 0.50%                                  
Net leverage ratio                   1.00% 1.00%              
Revolving Credit Facility [Member] | Maximum [Member]                                    
Debt Instrument [Line Items]                                    
Commitment fees percentage 0.25%                                  
Net leverage ratio                   4.50% 4.50%              
Line of credit facility borrowing capacity percentage                   35.00% 35.00%              
Revolving Credit Facility [Member] | London Interbank Offered Rate (LIBOR) [Member]                                    
Debt Instrument [Line Items]                                    
Debt instrument, basis spread on variable rate 3.25%                                  
Revolving Credit Facility [Member] | London Interbank Offered Rate (LIBOR) [Member] | Minimum [Member]                                    
Debt Instrument [Line Items]                                    
Debt instrument, basis spread on variable rate 3.50%                                  
Revolving Credit Facility [Member] | London Interbank Offered Rate (LIBOR) [Member] | Maximum [Member]                                    
Debt Instrument [Line Items]                                    
Debt instrument, basis spread on variable rate 3.00%                                  
Revolving Credit Facility [Member] | Base Rate [Member]                                    
Debt Instrument [Line Items]                                    
Debt instrument, basis spread on variable rate 2.25%                                  
Revolving Credit Facility [Member] | Base Rate [Member] | Minimum [Member]                                    
Debt Instrument [Line Items]                                    
Debt instrument, basis spread on variable rate 2.50%                                  
Revolving Credit Facility [Member] | Base Rate [Member] | Maximum [Member]                                    
Debt Instrument [Line Items]                                    
Debt instrument, basis spread on variable rate 2.00%                                  
Revolving Credit Facility [Member] | Senior Secured Term Loan Facility [Member]                                    
Debt Instrument [Line Items]                                    
Amount of term loan facility     $ 160,000,000.0                              
Line of credit facility maturity date     May 23, 2022                              
Outstanding borrowings                   $ 55,000,000.0                
Revolving Credit Facility [Member] | Senior Secured Term Loan Facility [Member] | Senior Notes [Member]                                    
Debt Instrument [Line Items]                                    
Amount of availability                   $ 100,200,000                
Revolving Credit Facility [Member] | Senior Secured Term Loan Facility [Member] | Senior Notes [Member] | Subsequent Event [Member]                                    
Debt Instrument [Line Items]                                    
Amount of availability           $ 125,200,000                        
Repayments under revolving credit facility           $ 30,000,000.0                        
Term Loan Facility [Member] | Senior Secured Term Loan Facility [Member]                                    
Debt Instrument [Line Items]                                    
Percentage of capital stock issued                   65.00%     65.00%          
Equipment Loan [Member] | European Operations [Member]                                    
Debt Instrument [Line Items]                                    
Debt instrument, interest rate stated, percentage                   2.20%     2.20%          
European Revolving Credit Facility [Member]                                    
Debt Instrument [Line Items]                                    
Outstanding borrowings                   $ 52,800,000     € 47,000,000          
Amount outstanding                   400,000     400,000          
Amount of availability                   14,200,000     € 12,600,000          
Percentage of management fee                 0.07%                  
Debt instrument expiry date                 May 22, 2022                  
European Revolving Credit Facility [Member] | Scenario Forecast [Member]                                    
Debt Instrument [Line Items]                                    
Outstanding borrowings       $ 11,800,000                            
Amount of availability       58,900,000                            
Repayments under revolving credit facility       $ 43,600,000 € 37,000,000                          
European Revolving Credit Facility [Member] | Minimum [Member]                                    
Debt Instrument [Line Items]                                    
Current borrowing capacity under line of credit | €                           € 45,000,000.0     30,000,000.0  
Annual commitment fee                 0.50%                  
European Revolving Credit Facility [Member] | Maximum [Member]                                    
Debt Instrument [Line Items]                                    
Current borrowing capacity under line of credit | €                           € 60,000,000.0     € 45,000,000.0  
Annual commitment fee                 1.05%                  
European Revolving Credit Facility [Member] | Euribor [Member]                                    
Debt Instrument [Line Items]                                    
Debt instrument, basis spread on variable rate                 0.00%                  
European Revolving Credit Facility [Member] | Euribor [Member] | Minimum [Member]                                    
Debt Instrument [Line Items]                                    
Debt instrument, basis spread on variable rate                 1.55%                  
European Revolving Credit Facility [Member] | Euribor [Member] | Maximum [Member]                                    
Debt Instrument [Line Items]                                    
Debt instrument, basis spread on variable rate                 3.00%                  
European Revolving Credit Facility [Member] | Equipment Loan [Member]                                    
Debt Instrument [Line Items]                                    
Debt instrument expiry date             Sep. 30, 2027                      
Quarterly payment                   $ 480,800 € 427,700              
Quarterly payment, start date                   Dec. 31, 2020 Dec. 31, 2020