v3.26.1
Note 7 - Goodwill and Other Intangible Assets - Summary of Intangible Assets (Details) - USD ($)
Jun. 30, 2026
Dec. 31, 2025
Gross carrying amount $ 21,125,000 $ 19,425,000
Accumulated amortization (4,941,000) (4,189,000)
Net book value 16,184,000 15,236,000
Goodwill 12,962,000 $ 0
FAA Part 135 Operating Certificate 2,417,000  
Intangible assets and goodwill, gross 36,504,000  
Intangible assets and goodwill, net 31,563,000  
Cardiac Electrophysiology [Member]    
Gross carrying amount 19,425,000  
Accumulated amortization (4,897,000)  
Net book value 14,528,000  
Private Aviation [Member]    
Gross carrying amount 1,700,000  
Accumulated amortization (44,000)  
Net book value 1,656,000  
Goodwill $ 13  
Developed Technology Rights [Member] | VIVO [Member] | Cardiac Electrophysiology [Member]    
Estimated Useful Life (Year) 10 years 15 years
Gross carrying amount $ 170,000 $ 170,000
Accumulated amortization (9,000) 0
Net book value $ 161,000 $ 170,000
Developed Technology Rights [Member] | LockeT [Member] | Cardiac Electrophysiology [Member]    
Estimated Useful Life (Year) 14 years 14 years
Gross carrying amount $ 18,770,000 $ 18,770,000
Accumulated amortization (4,692,000) (4,022,000)
Net book value $ 14,078,000 $ 14,748,000
Customer Relationships [Member] | Cardiac Electrophysiology [Member]    
Estimated Useful Life (Year) 6 years 6 years
Gross carrying amount $ 62,000 $ 62,000
Accumulated amortization (36,000) (31,000)
Net book value $ 26,000 $ 31,000
Trademarks [Member] | VIVO [Member] | Cardiac Electrophysiology [Member]    
Estimated Useful Life (Year) 10 years 9 years
Gross carrying amount $ 14,000 $ 14,000
Accumulated amortization (1,000) 0
Net book value $ 13,000 $ 14,000
Trademarks [Member] | LockeT [Member] | Cardiac Electrophysiology [Member]    
Estimated Useful Life (Year) 9 years 9 years
Gross carrying amount $ 409,000 $ 409,000
Accumulated amortization (159,000) (136,000)
Net book value $ 250,000 $ 273,000
Applications [Member] | Private Aviation [Member]    
Estimated Useful Life (Year) 5 years  
Gross carrying amount $ 200,000  
Accumulated amortization (13,000)  
Net book value $ 187,000  
Trademarks and Trade Names [Member] | Private Aviation [Member]    
Estimated Useful Life (Year) 15 years  
Gross carrying amount $ 1,300,000  
Accumulated amortization (27,000)  
Net book value $ 1,273,000  
Customer-Related Intangible Assets [Member] | Private Aviation [Member]    
Estimated Useful Life (Year) 15 years  
Gross carrying amount $ 200,000  
Accumulated amortization (4,000)  
Net book value $ 196,000