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Debt - Additional Information (Details)
€ in Millions
1 Months Ended 6 Months Ended 12 Months Ended
Oct. 01, 2016
Aug. 31, 2015
USD ($)
Jun. 30, 2016
USD ($)
tranche
Dec. 31, 2015
USD ($)
Jun. 30, 2016
EUR (€)
Debt Instrument [Line Items]          
Borrowings under the credit facility     $ 706,800,000 $ 576,500,000  
Term loan          
Debt Instrument [Line Items]          
Face value | €         € 60
Debt instrument, interest rate terms     The loan has two tranches of which the first tranche for €25 million has a three month availability period at a rate of Euribor +1.2% and a final maturity date of June 30, 2023. The second tranche for €35 million has a one year availability period at a rate of Euribor +1.25% and a final maturity date of June 30, 2024. There is a zero percent floor on the Euribor. The loans are payable in annual installments, beginning on June 30, 2017 and June 30, 2019, respectively.    
Number of tranches | tranche     2    
Debt instrument, payment terms     annual    
Outstanding amount under loan     $ 0    
Term loan | Euribor          
Debt Instrument [Line Items]          
Debt instrument, floor rate     0.00%    
Senior unsecured credit facility- revolving loan due 2021          
Debt Instrument [Line Items]          
Face value     $ 700,000,000    
Debt instrument expiration period     2021-06    
Variable interest rate basis     LIBOR + 1.25%    
Spread on variable interest rate basis     1.25%    
Debt instrument, interest rate terms     The initial interest rate for the revolver (until the third quarter 2016 is reported) is LIBOR + 1.25%. The interest rate ranges from LIBOR + 0.875% to a maximum of LIBOR + 1.875%, depending upon the Company’s leverage ratio.    
Borrowings under the credit facility     $ 410,000,000    
Maximum amount available under credit facility to issue letters of credit     40,000,000    
Letters of credit outstanding under credit facility     2,100,000    
Undrawn availability under credit facility     $ 287,900,000    
Debt instrument, covenant terms     In accordance with the terms of the Facility, we are required to maintain a minimum interest coverage ratio of 3.50 (based on the ratio of EBITDA, as defined in the credit agreement, to interest expense) and may not exceed a maximum leverage ratio of 3.50 (based on the ratio of total debt to EBITDA) throughout the term of the Facility.    
Average interest rate     1.90% 1.80%  
Debt instrument, maturity year     2021    
Repayments of debt   $ 296,400,000      
Senior unsecured credit facility- revolving loan due 2021 | Minimum | Scenario Forecast          
Debt Instrument [Line Items]          
Variable interest rate basis LIBOR + 0.875%        
Spread on variable interest rate basis 0.875%        
Senior unsecured credit facility- revolving loan due 2021 | Maximum          
Debt Instrument [Line Items]          
Interest coverage ratio required to be maintained     3.50    
Senior unsecured credit facility- revolving loan due 2021 | Maximum | Scenario Forecast          
Debt Instrument [Line Items]          
Variable interest rate basis LIBOR + 1.875%        
Spread on variable interest rate basis 1.875%        
Tranche one | Term loan          
Debt Instrument [Line Items]          
Face value | €         25
Variable interest rate basis     Euribor +1.2%    
Spread on variable interest rate basis     1.20%    
Debt instrument availability period     3 months    
Debt instrument, maturity date     Jun. 30, 2023    
Beginning date of first required loan payment     Jun. 30, 2017    
Tranche two | Term loan          
Debt Instrument [Line Items]          
Face value | €         € 35
Variable interest rate basis     Euribor +1.25%    
Spread on variable interest rate basis     1.25%    
Debt instrument, maturity date     Jun. 30, 2024    
Debt instrument availability period     1 year    
Beginning date of first required loan payment     Jun. 30, 2019    
4.7% senior notes due 2025          
Debt Instrument [Line Items]          
Face value   $ 300,000,000      
Debt instrument, interest rate   4.70% 4.70%   4.70%
Debt instrument, maturity year   2025 2025    
Increase in senior notes interest rate   0.25%      
Effective interest rate     4.80%   4.80%
4.7% senior notes due 2025 | Level 2          
Debt Instrument [Line Items]          
Fair value of senior notes     $ 309,300,000    
4.7% senior notes due 2025 | Maximum          
Debt Instrument [Line Items]          
Debt instrument, interest rate   6.70%