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Note 7 - Intangible Assets, Net - Schedule of Finite-lived Intangible Assets (Details) - USD ($)
$ in Thousands
Dec. 31, 2025
Dec. 31, 2024
Total Intangible Assets, Gross Carrying Amount $ 7,599 $ 7,599
Total Intangible Assets, Accumulated Amortization 6,555 5,722
Intangible assets, net $ 1,044 1,877
Customer Relationships [Member] | VisiSonics [Member]    
Total Intangible Assets, Weighted Average Amortization Period (Year) 4 years  
Total Intangible Assets, Gross Carrying Amount $ 432 432
Total Intangible Assets, Accumulated Amortization 288 180
Intangible assets, net $ 144 252
Customer Relationships [Member] | Acquisition of Hillcrest Labs [Member]    
Total Intangible Assets, Weighted Average Amortization Period (Year) 4 years 4 months 24 days  
Total Intangible Assets, Gross Carrying Amount $ 3,518 3,518
Total Intangible Assets, Accumulated Amortization 3,511 3,351
Intangible assets, net $ 7 167
Technology-Based Intangible Assets [Member] | VisiSonics [Member]    
Total Intangible Assets, Weighted Average Amortization Period (Year) 5 years  
Total Intangible Assets, Gross Carrying Amount $ 1,174 1,174
Total Intangible Assets, Accumulated Amortization 626 391
Intangible assets, net $ 548 783
Research and Development Tools [Member] | Acquisition of Hillcrest Labs [Member]    
Total Intangible Assets, Weighted Average Amortization Period (Year) 7 years 6 months  
Total Intangible Assets, Gross Carrying Amount $ 2,475 2,475
Total Intangible Assets, Accumulated Amortization 2,130 1,800
Intangible assets, net $ 345 $ 675