Quarterly report pursuant to Section 13 or 15(d)

Deerfield Obligation - Narrative (Details)

v3.19.2
Deerfield Obligation - Narrative (Details) - USD ($)
3 Months Ended 6 Months Ended 28 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2019
Jun. 30, 2018
Oct. 31, 2020
Jan. 31, 2021
Dec. 31, 2018
Debt Instrument [Line Items]              
Interest expense, net $ (199,746) $ (242,407) $ (407,685) $ (342,810)      
Long-term debt, current portion 1,050,000   1,050,000       $ 1,050,000
Deerfield Obligation              
Debt Instrument [Line Items]              
Interest expense, net 200,000   500,000        
Deerfield Obligation 15,300,000   15,300,000        
Long-term debt, current portion $ 1,100,000   $ 1,100,000        
Forecast | Deerfield Obligation              
Debt Instrument [Line Items]              
Periodic payment         $ 262,500    
Balloon payment to be paid           $ 15,250,000