Annual report pursuant to Section 13 and 15(d)

Note 15 - Income Taxes - Net Loss (Details)

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Note 15 - Income Taxes - Net Loss (Details) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Dec. 31, 2023
Sep. 30, 2023
Jun. 30, 2023
Mar. 31, 2023
Dec. 31, 2022
Sep. 30, 2022
Jun. 30, 2022
Mar. 31, 2022
Dec. 31, 2023
Dec. 31, 2022
Notes To Financial Statements [Abstract]                    
Loss attributed to US foreign operations                 $ (45,652) $ (36,615)
Loss attributed to Canadian operations                 (5,555) (5,208)
Loss before income taxes $ (11,955) $ (11,447) $ (14,129) $ (13,676) $ (10,000) $ (9,777) $ (10,565) $ (11,481) $ (51,207) $ (41,823)