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Equity - Narrative (Details) - USD ($)
$ in Millions
9 Months Ended
May 02, 2017
Aug. 02, 2016
Sep. 30, 2018
Sep. 30, 2017
Common Stock        
Class of Warrant or Right [Line Items]        
Common stock (in shares) 17,500      
Fair value upon issuance $ 0.1      
Common Stock        
Class of Warrant or Right [Line Items]        
Issuance and sale of common stock (in shares)     502,000 374,000
DG Value Partners, LP and DG Value Partners II Master Funds LP | Series A shares issued and outstanding        
Class of Warrant or Right [Line Items]        
Number of shares of preferred stock converted (in shares) 2,308      
DG Value Partners, LP and DG Value Partners II Master Funds LP | Series A-1 Convertible Preferred Stock        
Class of Warrant or Right [Line Items]        
Number of shares of preferred stock converted (in shares) 1,000      
DG Value Partners, LP and DG Value Partners II Master Funds LP | Common Stock        
Class of Warrant or Right [Line Items]        
Number of shares of common stock from conversion (in shares) 803,469      
Corrib Master Fund, Ltd. | Series A shares issued and outstanding        
Class of Warrant or Right [Line Items]        
Number of shares of preferred stock converted (in shares)     10,043  
Issuance and sale of common stock (in shares)   1,000    
Luxor Capital Partners, LP | Series A shares issued and outstanding        
Class of Warrant or Right [Line Items]        
Number of shares of preferred stock converted (in shares)     89,273  
Luxor Capital Partners, LP | Series A-1 shares issued and outstanding        
Class of Warrant or Right [Line Items]        
Issuance and sale of common stock (in shares)   9,000    
Corrib Master Fund, Ltd. and Luxor Capital Partners, LP        
Class of Warrant or Right [Line Items]        
Percent of accrued value     1.875%  
Recurring        
Class of Warrant or Right [Line Items]        
Additional share consideration valued at     $ 0.6