Annual report pursuant to Section 13 and 15(d)

Commitments and Contingencies - Narrative (Details)

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Commitments and Contingencies - Narrative (Details) - USD ($)
1 Months Ended 12 Months Ended
Feb. 19, 2019
Feb. 01, 2016
Jun. 30, 2019
Dec. 31, 2019
Dec. 31, 2018
Payments for milestones     $ 250,000    
Percentage of license income entitlement       50.00%  
License income       $ 187,500 $ 27,500
Issuance of common stock (in shares) 2,172,591        
Rent expense       95,519 89,643
Purchase obligation       3,937,500  
Maximum penalty payment       500,000  
Postemployment benefits liability       1,775,035  
Office Space Lease Arrangement          
Operating lease term (in years)   63 months      
Monthly lease payment   $ 7,867      
MD Anderson          
Payment for expenses related to agreement       $ 65,000 $ 55,000
Issuance of common stock (in shares)       175,000