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Short-Term Borrowings and Long-Term Debt - Narrative (Details)
€ in Millions
3 Months Ended
Sep. 30, 2016
USD ($)
Sep. 30, 2015
USD ($)
Sep. 30, 2016
EUR (€)
Jun. 30, 2016
USD ($)
Jun. 30, 2016
EUR (€)
Debt Instrument [Line Items]          
Borrowings under revolving credit facility $ 160,712,000     $ 71,427,000  
Debt issuance costs $ 700,000        
Industrial Development Revenue Bond          
Debt Instrument [Line Items]          
Percentage spread points on variable rate debt instrument 0.85%        
Maturity date of debt instrument Sep. 01, 2032        
Maximum time period of interest (in years) 10 years        
Put option, exercisable period limitation 180 days        
Percentage of principal due on exercise of put option 100.00%        
Long-term debt $ 5,400,000     $ 5,400,000  
Long-term debt, percentage bearing variable interest 1.37%   1.37% 1.32% 1.32%
Multi-Currency Revolving Credit Facility, Combined with Accordion Feature          
Debt Instrument [Line Items]          
Borrowing capacity under credit facility $ 450,000,000        
Multi-Currency Revolving Credit Facility, Accordion Feature          
Debt Instrument [Line Items]          
Borrowing capacity under credit facility 150,000,000        
Multi-Currency Revolving Credit Facility          
Debt Instrument [Line Items]          
Borrowing capacity under credit facility $ 300,000,000        
Line of credit facility, expiration date Nov. 06, 2018        
Line of credit facility, unused capacity, commitment fee percentage 0.175%        
Percentage of capital stock or other equity interest pledged per credit agreement (up to) 65.00%   65.00%    
Borrowings under revolving credit facility $ 160,700,000     $ 71,400,000  
Average daily balance on revolving credit facility 102,300,000 $ 30,700,000      
Line of credit facility, remaining borrowing capacity $ 138,900,000     $ 228,200,000  
Letters of credit outstanding | €     € 0.4   € 0.4
Multi-Currency Revolving Credit Facility | Minimum          
Debt Instrument [Line Items]          
Line of credit facility, unused capacity, commitment fee percentage 0.175%        
Multi-Currency Revolving Credit Facility | Maximum          
Debt Instrument [Line Items]          
Line of credit facility, unused capacity, commitment fee percentage 0.40%        
Multi-Currency Revolving Credit Facility | Alternate Base Rate Loans          
Debt Instrument [Line Items]          
Percentage spread points on variable rate debt instrument 0.00%        
Multi-Currency Revolving Credit Facility | Alternate Base Rate Loans | Minimum          
Debt Instrument [Line Items]          
Percentage spread points on variable rate debt instrument 0.00%        
Multi-Currency Revolving Credit Facility | Alternate Base Rate Loans | Maximum          
Debt Instrument [Line Items]          
Percentage spread points on variable rate debt instrument 1.25%        
Multi-Currency Revolving Credit Facility | London Interbank Offered Rate (LIBOR)          
Debt Instrument [Line Items]          
Percentage spread points on variable rate debt instrument 1.00%        
Multi-Currency Revolving Credit Facility | London Interbank Offered Rate (LIBOR) | Minimum          
Debt Instrument [Line Items]          
Percentage spread points on variable rate debt instrument 1.00%        
Multi-Currency Revolving Credit Facility | London Interbank Offered Rate (LIBOR) | Maximum          
Debt Instrument [Line Items]          
Percentage spread points on variable rate debt instrument 2.25%        
Letter of Credit          
Debt Instrument [Line Items]          
Borrowing capacity under credit facility $ 50,000,000