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Note 3 - Revenues - Disaggregation of Revenue (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Revenues $ 21,774 $ 24,512
Transferred at Point in Time [Member]    
Revenues 20,945 23,743
Transferred over Time [Member]    
Revenues 829 769
Instruments, Equipment, Software, and Accessories [Member]    
Revenues 19,865 22,759
Service, Maintenance, and Warranty Contracts [Member]    
Revenues $ 1,909 $ 1,753