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DEBT - Schedule of Long-term Debt (Details) - USD ($)
Jun. 30, 2018
Jun. 30, 2017
Jun. 04, 2015
Debt Instrument [Line Items]      
Total $ 107,212,000 $ 234,272,000  
Less: current portion (100,250,000) (227,993,000)  
Total long-term debt 6,962,000 6,279,000  
Notes payable      
Debt Instrument [Line Items]      
Total 7,212,000 14,272,000  
Credit Facility      
Debt Instrument [Line Items]      
Commitment Amount     $ 750,000,000.0
Total $ 100,000,000 $ 220,000,000