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Short-term and Long-term Obligations - Future Minimum Lease Payments (Details) - USD ($)
Jul. 31, 2016
Jun. 30, 2016
Jun. 30, 2015
Debt Instrument [Line Items]      
2017   $ 53,589,000  
2018   10,000,000  
2019   10,000,000  
2020   10,000,000  
2021   10,000,000  
Thereafter   0  
Total debt, outstanding borrowings   93,589,000 $ 94,412,000
Bank of America | Secured Debt | Term Loan | Bank of America 2016 Credit Agreement      
Debt Instrument [Line Items]      
Term loan, face amount   $ 50,000,000  
Subsequent Event | Bank of America | Secured Debt | Term Loan | Bank of America 2016 Credit Agreement      
Debt Instrument [Line Items]      
Term loan, face amount $ 50,000,000