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Note 3 - Revenues (Tables)

12 Months Ended

Dec. 31, 2024

Notes Tables

Disaggregation of Revenue [Table Text Block]

		Year Ended December 31,
(in thousands)		2024				2023
Instruments, equipment, software and accessories		$	86,964			$	105,716
Service, maintenance and warranty contracts			7,171				6,534
Total revenues		$	94,135			$	112,250

		Year Ended December 31,
(in thousands)		2024				2023
Goods and services transferred at a point in time		$	90,420			$	108,558
Goods and services transferred over time			3,715				3,692
Total revenues		$	94,135			$	112,250

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

		Year Ended December 31,
(in thousands)		2024				2023
Americas
United States		$	41,738			$	48,205
Americas - Other			3,596				3,517
Europe, Middle East and Africa			28,405				33,275
Asia
Greater China			13,297				18,488
Asia - Other			7,099				8,765
		$	94,135			$	112,250

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

		December 31,												Change
(in thousands)		2024				2023				2022				2024 vs. 2023				2023 vs. 2022
Service, maintenance and warranty contracts		$	2,366			$	2,849			$	1,530			$	(483	)		$	1,319
Customer advances			1,440				1,659				1,840				(219	)			(181	)
Total contract liabilities		$	3,806			$	4,508			$	3,370			$	(702	)		$	1,138

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

		December 31,
(in thousands)		2024				2023
Balance, beginning of period		$	160			$	191
Provision for expected credit losses			60				29
Charge-offs and other			(5	)			(60	)
Balance, end of period		$	215			$	160

Schedule of Product Warranty Liability [Table Text Block]

		Year Ended December 31,
(in thousands)		2024				2023
Balance, beginning of period		$	336			$	268
Provision for warranties			317				381
Warranty claims			(335	)			(313	)
Balance, end of period		$	318			$	336

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