Quarterly report pursuant to Section 13 or 15(d)

Note 2 - Risks and Uncertainties (Details Textual)

v3.22.2.2
Note 2 - Risks and Uncertainties (Details Textual) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2022
Jun. 30, 2022
Mar. 31, 2022
Sep. 30, 2021
Jun. 30, 2021
Mar. 31, 2021
Sep. 30, 2022
Sep. 30, 2021
Dec. 31, 2021
Dec. 31, 2020
Retained Earnings (Accumulated Deficit), Total $ (92,426)           $ (92,426)   $ (82,501)  
Net Income (Loss) Attributable to Parent, Total (3,059) $ (3,358) $ (3,508) $ (3,450) $ (3,274) $ (3,622) (9,925) $ (10,346)    
Net Cash Provided by (Used in) Operating Activities, Total             (8,745) (9,448)    
Cash, Cash Equivalents, and Short-Term Investments, Total 36,100           36,100      
Working Capital 35,000           35,000      
Stockholders' Equity Attributable to Parent, Ending Balance $ 35,079 $ 37,715 $ 40,768 $ 47,036 $ 20,318 $ 23,145 $ 35,079 $ 47,036 $ 44,024 $ 26,014