v3.26.1
Note 4 - Discontinued Operations (Details Textual) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Mar. 31, 2026
Dec. 31, 2025
Apr. 30, 2024
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]              
Common stock, par value $ 0.001   $ 0.001     $ 0.001  
Estimated reduction of reserve from hazardous waste disposal vendor   $ 0.3   $ 0.3      
GT Medical Technologies, Inc. [Member]              
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]              
Percentage of issued and outstanding capital stock             0.50%
GT Medical Technologies, Inc. [Member] | GT Medical Stock [Member]              
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]              
Estimated fair value         $ 0.2    
GT Medical Technologies, Inc. [Member] | Royalty [Member]              
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]              
Royalties receivable $ 0.2 $ 0.2 $ 0.2 $ 0.2