Quarterly report pursuant to Section 13 or 15(d)

Termination Costs - Additional Information (Details)

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Termination Costs - Additional Information (Details) - USD ($)
9 Months Ended
Jun. 30, 2018
May 02, 2018
Apr. 02, 2018
Sep. 30, 2018
Sep. 30, 2017
Restructuring Cost And Reserve [Line Items]          
Stock compensation expense       $ 2,536,132 $ 463,856
Mr. Charles Myers          
Restructuring Cost And Reserve [Line Items]          
Severance amount paid in cash   $ 484,000      
Unvested options shares   282,994      
Number of monthly premiums for disability insurance   12 months      
Remaining amount payable       20,389  
Mr. Charles Myers | Other Employment Benefits          
Restructuring Cost And Reserve [Line Items]          
Severance amount paid in cash   $ 20,000      
Mr. Charles Myers | Disability Insurance Plan          
Restructuring Cost And Reserve [Line Items]          
Severance amount paid in cash   $ 3,200      
Mr. Selbo          
Restructuring Cost And Reserve [Line Items]          
Severance amount paid in cash     $ 150,000    
Remaining amount payable       0  
Sales and Marketing Expense          
Restructuring Cost And Reserve [Line Items]          
Agreement termination costs $ 1,300,000        
Sales and Marketing Expense | Mr. Selbo          
Restructuring Cost And Reserve [Line Items]          
Stock compensation expense     $ 44,267    
General and Administrative Expense | Mr. Charles Myers          
Restructuring Cost And Reserve [Line Items]          
Stock compensation expense       $ 1,200,000