Annual report pursuant to Section 13 and 15(d)

Note 11 - Commitments and Contingencies (Details Textual)

v3.20.1
Note 11 - Commitments and Contingencies (Details Textual) - USD ($)
Dec. 27, 2019
Dec. 31, 2019
Dec. 31, 2018
Legalist Fund II, L.P. (Funder) [Member] | Lawsuit Against PRA Netherlands [Member] | Pending Litigation [Member]      
Litigation Funding Agreement, Maximum Funds Received $ 1,000,000    
Litigation Settlement, Expense Previously Paid 200,000    
Litigation Funding Agreement, Reimbursement for Diligence and Underwriting Costs 10,000    
Litigation Funding Agreement, Amount to Repaid If Occurs Within Nine Months 1,000,000    
Litigation Funding Agreement, Amount to Repaid If Occurs More Than Nine Months But Before Trial Start 2,000,000    
Litigation Funding Agreement, Amount to Repaid If Occurs After Nine Months and Trial Start $ 3,000,000    
Litigation Funding Agreement, Repayment, Percentage of Claim Proceeds 20.00%    
Litigation Funding Agreement, Period For Repayment Before Interest 3 years 182 days    
Litigation Funding Agreement, Interest, Percentage Unpaid Amounts 20.00%    
Research and Development Contracts [Member]      
Contractual Obligation, Due in Next Fiscal Year   $ 4,900,000  
Contractual Obligation, Due in Second Year   0  
Technology License [Member]      
Milestone Payment, Due Upon Initiation of Phase III Trial   185,000  
Milestone Payment, Due Upon First Regulatory Approval for Commercial Sale   185,000  
Contractual Obligation, Total   0 $ 0
Indemnification Agreements [Member]      
Contractual Obligation, Total   $ 0 $ 0