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Note 3 - Discontinued Operations (Details Textual) - USD ($)
$ in Thousands
3 Months Ended
Dec. 23, 2025
Mar. 31, 2026
Dec. 31, 2025
Dec. 31, 2024
Sep. 30, 2025
Proceeds from Divestiture of Businesses     $ 9,000 $ 0  
Impairment of Long-Lived Assets to be Disposed of     9,696 0  
Loss Contingency Accrual     2,100    
Edwards Vacuum LLC Warranty Claim [Member]          
Loss Contingency Accrual         $ 2,100
Loss Contingency Accrual, Provision     0    
B Medical Systems Business [Member] | Discontinued Operations, Held-for-Sale [Member]          
Disposal Group, Including Discontinued Operation, Consideration $ 63,000        
Proceeds from Divestiture of Businesses 9,000   9,000    
Business Combination, Contingency, Break-up Fee $ 5,000        
Impairment of Long-Lived Assets to be Disposed of     $ 9,696 $ 0  
B Medical Systems Business [Member] | Discontinued Operations, Held-for-Sale [Member] | Forecast [Member]          
Proceeds from Divestiture of Businesses   $ 54,000