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Stock-based Compensation, Equity Grants, and Warrants - Stock Options Fair Value Assumptions (Details) - $ / shares
9 Months Ended
Dec. 01, 2017
Nov. 29, 2017
Jun. 30, 2018
11/29/2017      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Strike price (in dollars per share)   $ 6.46  
Stock price (in dollars per share)   6.46  
Threshold vesting price (in dollars per share)   12  
Calculated fair value (in dollars per share)   $ 3.98  
12/1/2017      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Strike price (in dollars per share) $ 6.28    
Stock price (in dollars per share) 6.28    
Threshold vesting price (in dollars per share) 8    
Calculated fair value (in dollars per share) 3.87    
12/1/2017      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Strike price (in dollars per share) 6.28    
Stock price (in dollars per share) 6.28    
Threshold vesting price (in dollars per share) 10    
Calculated fair value (in dollars per share) $ 3.82    
Employee Stock Option      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Expected volatility rate     50.00%
Expected term (years)     10 years
Stock price threshold term     10 days
Employee Stock Option | 11/29/2017      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Expected term (years)   10 years  
Risk free interest rate   2.40%  
Employee Stock Option | 12/1/2017      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Expected term (years) 10 years    
Risk free interest rate 2.40%    
Employee Stock Option | 12/1/2017      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Expected term (years) 10 years    
Risk free interest rate 2.40%