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Long -Term Debt and Capital Leases - Narrative (Details) - USD ($)
$ in Thousands
1 Months Ended 12 Months Ended
Nov. 07, 2012
Feb. 29, 2012
Jun. 30, 2017
Jun. 30, 2016
Feb. 14, 2012
Oct. 21, 2011
Long Term Debt and Capital Leases (Additional Textual) [Abstract]            
Long-term Debt, Maturities, Repayments of Principal in 2020     $ 400,000      
Future Principal Maturities of Long-term Debt Beyond 2022     300,000      
Capital Lease Obligations     $ 190 $ 748    
US Dollar Denominated Borrowings [Member]            
Long-Term Debt and Capital Leases (Textual) [Abstract]            
Debt Instrument, Interest Rate, Stated Percentage     0.00% 0.00%    
Capital Lease Obligations [Member]            
Long-Term Debt and Capital Leases (Textual) [Abstract]            
Debt Instrument, Interest Rate, Stated Percentage     3.90% 3.90%    
2.650% Senior Notes due 2019 [Member]            
Long-Term Debt and Capital Leases (Textual) [Abstract]            
Debt Instrument, Interest Rate, Stated Percentage 2.65%          
Debt Instrument, Unamortized Discount     $ 200 $ 300    
Long Term Debt and Capital Leases (Additional Textual) [Abstract]            
Proceeds from Issuance of Senior Long-term Debt $ 400,000          
3.875% Senior Unsecured Notes Due in 2022 [Member]            
Long-Term Debt and Capital Leases (Textual) [Abstract]            
Debt Instrument, Interest Rate, Stated Percentage         3.875%  
Debt Instrument, Unamortized Discount     200 $ 200    
Long Term Debt and Capital Leases (Additional Textual) [Abstract]            
Proceeds from Issuance of Senior Long-term Debt   $ 300,000        
2016 Credit Agreement [Member]            
Long-Term Debt and Capital Leases (Textual) [Abstract]            
Maximum Borrowing Capacity under the 2016 Credit Agreement           $ 600,000
Borrowing outstanding under 2016 Credit Agreement     $ 0      
Term of Long Term Debt     5 years