Note 13 - Segment Information (Tables)

9 Months Ended

Sep. 30, 2023

Notes Tables

Schedule of Segment Reporting Information, by Segment [Table Text Block]

	Three Months Ended September 30,						Nine Months Ended September 30,
	2023			2022			2023			2022
Revenue:
Electronic Test	$	11,547		$	10,408		$	32,911		$	28,983
Environmental Technologies		7,000			7,631			23,178			22,131
Process Technologies		14,116			12,732			41,051			33,309
Total revenue	$	32,663		$	30,771		$	97,140		$	84,423
Income from divisional operations:
Electronic Test	$	3,268		$	2,406		$	8,487		$	6,486
Environmental Technologies		523			1,021			2,479			2,893
Process Technologies		2,909			2,465			8,177			5,764
Total income from divisional operations		6,700			5,892			19,143			15,143
Corporate expenses		(2,902	)		(2,138	)		(7,416	)		(6,312	)
Acquired intangible amortization		(515	)		(595	)		(1,582	)		(2,142	)
Interest expense		(168	)		(179	)		(526	)		(457	)
Other income (expense)		423			59			678			32
Earnings before income tax expense	$	3,538		$	3,039		$	10,297		$	6,264

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

	Three Months Ended September 30,				Nine Months Ended September 30,
	2023		2022		2023		2022
Revenue:
U.S.	$	10,670	$	12,619	$	31,672	$	35,921
Foreign		21,993		18,152		65,468		48,502
	$	32,663	$	30,771	$	97,140	$	84,423

Long-Lived Assets by Geographic Areas [Table Text Block]

	September 30,		December 31,
	2023		2022
Property and equipment:
U.S.	$	2,529	$	2,658
Foreign		614		474
	$	3,143	$	3,132

Asset [Member]

Notes Tables

Schedule of Segment Reporting Information, by Segment [Table Text Block]

	September 30,		December 31,
	2023		2022
Identifiable assets:
Electronic Test	$	32,406	$	31,143
Environmental Technologies		17,349		18,040
Process Technologies		56,685		56,866
Corporate		28,143		4,017
	$	134,583	$	110,066