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Commitments and Contingencies - Operating Leases (Details)
1 Months Ended 12 Months Ended
May 18, 2018
shares
Mar. 15, 2018
Dec. 14, 2017
Sep. 25, 2017
USD ($)
Jun. 30, 2018
Dec. 31, 2018
USD ($)
Y
$ / shares
shares
Dec. 31, 2017
USD ($)
shares
Mar. 12, 2018
shares
Mar. 11, 2018
shares
Commitments and Contingencies                  
Warrants to purchase (in shares) | shares           759,396 1,036,717    
Fair value of warrants included in stockholders equity             $ 630,859    
Percentage of amount received to be paid to Glenmark       25.00%          
Maximum amount to be received by Glenmark       $ 7,000,000          
Payments made to date to Glenmark           $ 0      
Payments made to date to SEED           0      
Non-cancelable purchase orders           $ 1,500,000      
Common stock, shares authorized | shares 150,000,000             500,000,000 250,000,000
Reverse stock split ratio 0.0667       0.0667        
Period to amend complaint from date of dismissal           20 days      
Future minimum lease payments under non-cancellable operating leases                  
2019           $ 465,310      
2020           357,079      
Total minimum lease payments           822,389      
Minimum                  
Commitments and Contingencies                  
Reverse stock split ratio 0.090909091 0.833333333              
Maximum                  
Commitments and Contingencies                  
Reverse stock split ratio 0.066666667 0.1              
SEED                  
Commitments and Contingencies                  
Percentage of revenue sharing commitment     15.00%            
Percentage of revenue sharing commitment after first million dollars of revenue     20.00%            
General and administrative expense                  
Commitments and Contingencies                  
Rent expense under non-cancelable operating lease           475,305 $ 361,114    
Office lease extension agreement                  
Commitments and Contingencies                  
Monthly base rent for first twelve months           38,392      
Monthly base rent for subsequent twelve months           39,544      
Monthly base rent for final months           40,730      
Standby letter of credit received as collateral           $ 475,000      
Term           5 years      
Warrants to purchase (in shares) | shares           670,586      
Exercise price (in dollars per share) | $ / shares           $ 0.70      
Fair value of warrant           $ 493,689      
Fair value of warrants included in stockholders equity           493,688      
Non-cash rent expense per month           $ 19,748      
Office lease extension agreement | Strike price                  
Commitments and Contingencies                  
Warrants - Measurement input | $ / shares           0.84      
Office lease extension agreement | Expected life                  
Commitments and Contingencies                  
Warrants - Measurement input | Y           5      
Office lease extension agreement | Volatility                  
Commitments and Contingencies                  
Warrants - Measurement input           132      
Office lease extension agreement | Risk free rate                  
Commitments and Contingencies                  
Warrants - Measurement input           2.77      
Office lease extension agreement | Dividend rate                  
Commitments and Contingencies                  
Warrants - Measurement input           0