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Debt (Details) - USD ($)
$ in Thousands
3 Months Ended
Sep. 30, 2016
Jun. 30, 2016
Line of Credit Facility [Line Items]    
Senior Notes $ 275,000 $ 275,000
Short-term debt 28,221 [1] 21,717
Long-term debt 654,300 656,794
Debt, Carrying Value 682,521 678,511
Other Long-term Debt $ 9,447 10,088
Description of variable rate basis LIBOR  
Debt Instrument, Unamortized Discount $ (6,964) (7,386)
Line of Credit [Member]    
Line of Credit Facility [Line Items]    
Debt Instrument, Unamortized Discount (1,693)  
Revolving Credit Facility [Member]    
Line of Credit Facility [Line Items]    
Debt, Carrying Value 405,038 $ 400,809
Line of Credit [Member]    
Line of Credit Facility [Line Items]    
Current borrowing capacity $ 826,000  
Line of Credit [Member] | Minimum [Member]    
Line of Credit Facility [Line Items]    
Basis spread on LIBOR 1.50%  
Commitment fee (percentage) 0.225%  
Line of Credit [Member] | Maximum [Member]    
Line of Credit Facility [Line Items]    
Basis spread on LIBOR 2.25%  
Commitment fee (percentage) 0.40%  
Revolving Loan, Maturity September 23, 2019 [Member]    
Line of Credit Facility [Line Items]    
Weighted average interest rate 2.32%  
Term Loan [Domain] | Line of Credit [Member]    
Line of Credit Facility [Line Items]    
Long-term Debt, Gross $ 136,000  
Senior Notes [Member]    
Line of Credit Facility [Line Items]    
Debt Instrument, Interest Rate, Stated Percentage 7.00%  
Revolving Loan, Maturity September 23, 2019 [Member] | Line of Credit [Member]    
Line of Credit Facility [Line Items]    
Maximum borrowing capacity $ 690,000  
Redemption Any Time Prior to April 1, 2018    
Line of Credit Facility [Line Items]    
Debt Instrument, Redemption Price, Percentage 100.00%  
Debt Instrument, Redemption Price, Percentage of Principal Amount Redeemed 107.00%  
Redemption Any Time Prior to April 1, 2018 - Percentage of Aggregate Outstanding Principal    
Line of Credit Facility [Line Items]    
Debt Instrument, Redemption Price, Percentage 35.00%  
[1] Balances as of September 30, 2016 and June 30, 2016 are both inclusive of short-term debt issuance costs and debt discounts of $1,693.