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DEBT - Private Placement of Convertible Notes Narrative (Details)
3 Months Ended 6 Months Ended
Mar. 17, 2017
USD ($)
$ / shares
shares
Jun. 30, 2017
USD ($)
Mar. 31, 2017
USD ($)
instrument
d
$ / shares
Jun. 30, 2016
USD ($)
Jun. 30, 2017
USD ($)
Jun. 30, 2016
USD ($)
Jun. 30, 2014
USD ($)
Debt Instrument [Line Items]              
Repayments of debt         $ 6,509,000 $ 95,247,000  
Extinguishment fees         578,000 641,000  
Loss on early extinguishment of debt   $ 0   $ 1,568,000 $ 4,969,000 $ 1,568,000  
Convertible Notes [Member]              
Debt Instrument [Line Items]              
Face amount             $ 25,000,000.0
Common stock, par value (in usd per share) | $ / shares $ 0.0001            
Payment of debt and extinguishment fees $ 5,600,000            
Repayments of debt 5,000,000            
Extinguishment fees 600,000            
Loss on early extinguishment of debt     $ 5,000,000        
Non-cash write off related to settlement of convertible notes $ 46,000,000            
Debt conversion price (in usd per share) | $ / shares     $ 7.10        
Debt instrument, convertible, number of equity instruments | instrument     3,521,126        
Debt Instrument, convertible, threshold period following issuance date (in years)     3 years        
Debt instrument, convertible, threshold percentage of stock price trigger     125.00%        
Debt instrument, convertible, threshold trading days | d     20        
Debt instrument, convertible, threshold consecutive trading days     30 days        
Interest rate (percent)     8.00%        
Common Stock [Member]              
Debt Instrument [Line Items]              
Shares issued (in shares) | shares 3,175,584            
8% Convertible Notes [Member] | Convertible Notes [Member]              
Debt Instrument [Line Items]              
Original debt amount in debt conversion $ 20,000,000            
Interest rate (percent)   8.00%     8.00%    
Convertible Note Derivative Liability [Member] | Convertible Notes [Member]              
Debt Instrument [Line Items]              
Original debt amount in debt conversion $ 26,000,000