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Note 2 - Discontinued Operations (Details Textual)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2023
USD ($)
Sep. 30, 2023
USD ($)
Dec. 31, 2022
USD ($)
Disposal Group, Including Discontinued Operation, Assets $ 0 $ 0 $ 0
Net Cash Provided by (Used in) Discontinued Operations 0 $ 0  
Number of Reportable Segments   1  
Disposal Group, Including Discontinued Operation, Liabilities $ 0 $ 0 $ 0