Quarterly report pursuant to Section 13 or 15(d)

Note 1 - Organization - Correction of Prior Period (Details)

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Note 1 - Organization - Correction of Prior Period (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Dec. 31, 2023
Operating cost and expense      
Gain on disposal of property, plant and equipment $ 0 $ (20)  
Total operating expense 5,792 4,496  
Income (loss) from Operations (5,792) (4,496)  
Other income and expense      
Gain on disposal of property, plant and equipment 0 (20)  
Total other income (expense), net $ 40 (110)  
Common stock, shares issued (in shares) 113,131,561   108,308,661
Common stock, shares outstanding (in shares) 112,674,915   107,880,095
Previously Reported [Member]      
Operating cost and expense      
Gain on disposal of property, plant and equipment   20  
Total operating expense   4,516  
Income (loss) from Operations   (4,516)  
Other income and expense      
Gain on disposal of property, plant and equipment   20  
Total other income (expense), net   $ (90)  
Common stock, shares outstanding (in shares)   83,180,801  
Revision of Prior Period, Adjustment [Member]      
Operating cost and expense      
Gain on disposal of property, plant and equipment   $ (20)  
Total operating expense   (20)  
Income (loss) from Operations   20  
Other income and expense      
Gain on disposal of property, plant and equipment   (20)  
Total other income (expense), net   $ (20)  
Common stock, shares outstanding (in shares)   (510,632)  
As Corrected [Member]      
Operating cost and expense      
Gain on disposal of property, plant and equipment   $ (20)  
Total operating expense   4,496  
Income (loss) from Operations   (4,496)  
Other income and expense      
Gain on disposal of property, plant and equipment   (20)  
Total other income (expense), net   $ (110)  
Common stock, shares outstanding (in shares)   82,670,169  
Restricted Stock Units (RSUs) [Member] | Employees and Directors [Member] | Previously Reported [Member]      
Other income and expense      
Common stock, shares issued (in shares)   1,332,743  
Restricted Stock Units (RSUs) [Member] | Employees and Directors [Member] | Revision of Prior Period, Adjustment [Member]      
Other income and expense      
Common stock, shares issued (in shares)   (510,632)  
Restricted Stock Units (RSUs) [Member] | Employees and Directors [Member] | As Corrected [Member]      
Other income and expense      
Common stock, shares issued (in shares)   822,111