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Stockholders' (Deficit) Equity (Series C Convertible Redeemable Preferred Stock) (Details) - Series C Convertible Redeemable Preferred Stock - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 12 Months Ended
Aug. 22, 2016
Oct. 24, 2014
Sep. 30, 2016
Sep. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Class of Stock [Line Items]            
Temporary equity, shares authorized (in shares)   100,000     100,000 100,000
Temporary equity, stated value (usd per share) $ 1,000 $ 1,000     $ 1,000 $ 1,000
Annual dividend rate, percent 12.00% 12.00%        
Conversion price per share (USD per share)   $ 80        
Early redemption premium, percent 6.00% 6.00%        
Percent excluded from redemption fee 33.00% 33.00%        
Conversion price excluded from redemption fee (USD per share) $ 5.00 $ 100        
Undeclared dividends     $ 484 $ 307    
Number of days per year over which the dividend rate is computed 360 days 360 days        
Number of months per year over which the dividend rate is computed 12 months 12 months        
Number of days in each month over which the dividend rate is computed 30 days 30 days        
Securities Purchase Agreement            
Class of Stock [Line Items]            
Undeclared dividends         $ 1,156 $ 468