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Note 15 - Leases (Details Textual)
 3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2021
USD ($)
Jun. 30, 2021
USD ($)
Sep. 30, 2020
USD ($)
Sep. 30, 2021
USD ($)
Sep. 30, 2020
USD ($)
Dec. 31, 2019
May 26, 2017
ft²
Operating Lease, Cost $ 100,000   $ 200,000 $ 400,000 $ 500,000    
Operating Lease, Payments $ 100,000   $ 100,000 $ 400,000 $ 400,000    
Operating Lease, Weighted Average Remaining Lease Term (Year) 4 years 9 months 14 days     4 years 9 months 14 days      
Operating Lease, Weighted Average Discount Rate, Percent 4.53%     4.53%      
Operating Lease, Liability, Total $ 2,767,937     $ 2,767,937      
Other Liabilities [Member]              
Operating Lease, Liability, Total $ 2,300,000     $ 2,300,000      
Facilities and Office Space in Corvallis Oregon [Member]              
Lessee, Operating Lease, First Renewal Term (Year)           2 years  
Lessee, Operating Lease, Second Renewal Term (Year)           3 years  
Increase (Decrease) in Operating Lease Liability   $ 700,000          
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability   $ 700,000          
The New HQ Lease [Member] | MacAndrews and Forbes Incorporated [Member]              
Lessee, Operating Lease, Term of Contract (Year)             10 years
Area of Real Estate Property (Square Foot) | ft²             3,200