Annual report pursuant to Section 13 and 15(d)

Note 1 - Organization and Operations (Details Textual)

v3.20.4
Note 1 - Organization and Operations (Details Textual)
$ in Thousands
3 Months Ended 12 Months Ended
Dec. 31, 2020
USD ($)
Sep. 30, 2020
USD ($)
Jun. 30, 2020
USD ($)
Mar. 31, 2020
USD ($)
Dec. 31, 2019
USD ($)
Sep. 30, 2019
USD ($)
Jun. 30, 2019
USD ($)
Mar. 31, 2019
USD ($)
Dec. 31, 2020
USD ($)
Dec. 31, 2019
USD ($)
Number of Subsidiaries 2               2  
Revenue from Contract with Customer, Excluding Assessed Tax, Total $ 0 $ 90 $ 0 $ 18 $ 593 $ 2,361 $ 1,483 $ 437 $ 108 $ 4,874
Net Income (Loss) Attributable to Parent, Total (15,515) $ (1,837) $ (3,983) $ (4,427) (11,270) $ (11,316) $ (10,501) $ (11,708) (25,762) (44,795)
Cash and Cash Equivalents, at Carrying Value, Ending Balance $ 6,533       $ 7,575       $ 6,533 $ 7,575