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Stockholders' Deficiency - Narrative (Details) - USD ($)
 9 Months Ended 12 Months Ended
Nov. 16, 2016
Oct. 13, 2016
Sep. 30, 2017
Dec. 31, 2017
Dec. 31, 2016
Sep. 02, 2016
Dec. 31, 2015
Class of Warrant or Right [Line Items]              
Capital units, authorized       620,000,000      
Common stock, shares authorized       600,000,000     600,000,000
Preferred stock, shares authorized       20,000,000      
Exercise price of warrants           $ 2.29  
Common Stock              
Class of Warrant or Right [Line Items]              
Issuance of common stock associated with rights offering, shares 23,523,195       23,523,195    
Equity Rights              
Class of Warrant or Right [Line Items]              
Equity offering $ 35,300,000            
Common Stock | Subscription Right              
Class of Warrant or Right [Line Items]              
Amount to be invested by each right to purchase securities (in dollars per share) $ 0.65            
Exercise price of warrants $ 1.50            
Class of warrant or right, exercise price of warrants or rights, volume of weighted average price during market hours, percentage 85.00%            
Private Placement              
Class of Warrant or Right [Line Items]              
Backstop fee     $ 1,764,240 $ 1,764,240      
Private Placement | Common Stock              
Class of Warrant or Right [Line Items]              
Stock issued during period, shares, new issues   708,530          
MacAndrews & Forbes | Private Placement | Common Stock              
Class of Warrant or Right [Line Items]              
Stock issued during period, shares, new issues   565,000