XML 61 R43.htm IDEA: XBRL DOCUMENT v3.22.1
Note 7 - Commitments and Contingencies (Details Textual) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Jan. 01, 2020
Dec. 31, 2014
Estimated Litigation Liability $ 0      
Accrued Liabilities, Current, Total $ 8,416 $ 2,323    
Former Creditors [Member]        
Percentage of Milestone Based Contingent Payments Payable in Cash 7.50%      
Contingent Payable, Fair Value       $ 300
Accrued Liabilities, Current, Total   300 $ 700  
Payments for Contingent Payable   $ 400    
Former Creditors [Member] | Minimum [Member]        
Proceeds From Future Licensing Transaction Percentage 10.00%