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Short-Term Borrowings and Long-Term Debt (Long-term Debt) (Details) - USD ($)
$ in Thousands
Jun. 30, 2017
Jun. 30, 2016
Debt Instrument [Line Items]    
Revolving credit facility $ 91,871 $ 71,427
Long term debt 5,429 5,429
Total debt 97,300 76,856
Industrial Development Revenue Bond [Member]    
Debt Instrument [Line Items]    
Long term debt 5,429 5,429
Multi-Currency Revolving Credit Facility [Member]    
Debt Instrument [Line Items]    
Revolving credit facility $ 91,871 $ 71,427