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Note 3 - Revenues (Tables)

3 Months Ended

Mar. 31, 2025

Notes Tables

Disaggregation of Revenue [Table Text Block]

		Three Months Ended March 31,
(in thousands)		2025				2024
Instruments, equipment, software and accessories		$	19,865			$	22,759
Service, maintenance and warranty contracts			1,909				1,753
Total revenues		$	21,774			$	24,512

		Three Months Ended March 31,
(in thousands)		2025				2024
Goods and services transferred at a point in time		$	20,945			$	23,743
Goods and services transferred over time			829				769
Total revenues		$	21,774			$	24,512

Revenue from External Customers by Geographic Areas [Table Text Block]

		Three Months Ended March 31,
(in thousands)		2025				2024
Americas
United States		$	9,827			$	10,983
Americas - Other			829				761
Europe, Middle East and Africa			6,030				6,623
Asia
China			2,734				4,260
Asia - Other			2,354				1,885
		$	21,774			$	24,512

Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block]

		March 31,				December 31,
(in thousands)		2025				2024				Change				Percentage
Deferred revenue
Service, maintenance and warranty contracts		$	1,681			$	1,560			$	121				8	%
Installation and training			605				806				(201	)			-25	%
Customer advances			1,141				1,440				(299	)			-21	%
Total short-term contract liabilities			3,427				3,806				(379	)			-10	%
Long-term service, maintenance and warranty contracts			282				-				282				100	%
Total contract liabilities		$	3,709			$	3,806			$	(97	)			-3	%

Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table Text Block]

		Remaining Performance Obligations
(in thousands)		2025 *				2026				2027				2028				2029				Thereafter				Total
Service, maintenance and warranty contracts		$	1,551			$	280			$	93			$	23			$	13			$	3			$	1,963

Financing Receivable, Allowance for Credit Loss [Table Text Block]

		Three Months Ended March 31,
(in thousands)		2025				2024
Balance, beginning of period		$	215			$	160
Provision for expected credit losses			31				1
Charge-offs and other			(5	)			(34	)
Balance, end of period		$	241			$	127

Schedule of Product Warranty Liability [Table Text Block]

		Three Months Ended March 31,
(in thousands)		2025				2024
Balance, beginning of period		$	318			$	336
Provision for warranties			36				105
Warranty claims			(31	)			(82	)
Balance, end of period		$	323			$	359

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