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Note 1 - Description of Business and Basis of Presentation (Details Textual) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2023
Jun. 30, 2023
Dec. 31, 2022
Disposal Group, Including Discontinued Operation, Assets $ 0 $ 0 $ 0
Net Cash Provided by (Used in) Discontinued Operations 0 0  
Disposal Group, Including Discontinued Operation, Liabilities $ 0 $ 0 $ 0
Bomay [Member]      
Equity Method Investment, Ownership Percentage 40.00% 40.00%