XML 44 R32.htm IDEA: XBRL DOCUMENT v3.21.1
Note 10 - Collaboration, Licensing and Research Funding Agreements (Details Textual) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Oct. 31, 2020
Sep. 30, 2021
Mar. 31, 2021
Mar. 18, 2020
AEROSURF Funding Term Sheet [Member] | Lee’s Pharmaceutical Holdings Limited [Member]        
Nonrefundable Payments $ 2.8      
Term Sheet With Lee [Member]        
Financing of Product, Percent of Financing That Must be Repaid to Discontinue Revenue Sharing       125.00%
Financing of Product, Percent of Revenue Shared With Financer       50.00%
Term Sheet With Lee [Member] | Other Liabilities [Member]        
Contractual Obligation, Total     $ 2.8  
Term Sheet With Lee [Member] | Forecast [Member]        
Proceeds for Payments to Develop Product   $ 1.0