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Note 3 - Revenues (Tables)

9 Months Ended

Sep. 30, 2025

Notes Tables

Disaggregation of Revenue [Table Text Block]

		Three Months Ended September 30,								Nine Months Ended September 30,
(in thousands)		2025				2024				2025				2024
Instruments, equipment, software and accessories		$	18,582			$	20,543			$	56,625			$	64,594
Service, maintenance and warranty contracts			2,009				1,427				6,190				4,985
Total revenues		$	20,591			$	21,970			$	62,815			$	69,579

		Three Months Ended September 30,								Nine Months Ended September 30,
(in thousands)		2025				2024				2025				2024
Goods and services transferred at a point in time		$	19,541			$	21,119			$	59,755			$	66,845
Goods and services transferred over time			1,050				851				3,060				2,734
Total revenues		$	20,591			$	21,970			$	62,815			$	69,579

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

		Three Months Ended September 30,								Nine Months Ended September 30,
(in thousands)		2025				2024				2025				2024
Americas
United States		$	9,254				9,706			$	28,737			$	31,495
Americas - Other			1,185				1,211				2,436				2,635
Europe, Middle East and Africa			6,610				6,620				19,228				19,842
Asia
China			2,145				2,639				7,330				10,149
Asia - Other			1,397				1,794				5,084				5,458
		$	20,591			$	21,970			$	62,815			$	69,579

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

		September 30,				December 31,
(in thousands)		2025				2024				Change				Percentage
Deferred revenue
Service, maintenance and warranty contracts		$	1,414			$	1,560			$	(146	)			-9	%
Installation and training			477				806				(329	)			-41	%
Customer advances			988				1,440				(452	)			-31	%
Total short-term contract liabilities			2,879				3,806				(927	)			-24	%
Long-term service, maintenance and warranty contracts			288				-				288				100	%
Total contract liabilities		$	3,167			$	3,806			$	(639	)			-17	%

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		$	1,194			$	450			$	38			$	15			$	5			$	-			$	1,702

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

		Nine Months Ended September 30,
(in thousands)		2025				2024
Balance, beginning of period		$	215			$	160
Provision for expected credit losses			(29	)			13
Charge-offs and other			(24	)			1
Balance, end of period		$	162			$	174

Schedule of Product Warranty Liability [Table Text Block]

		Nine Months Ended September 30,
(in thousands)		2025				2024
Balance, beginning of period		$	318			$	336
Provision for warranties			131				307
Warranty claims			(145	)			(228	)
Balance, end of period		$	304			$	415

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