GOODWILL AND INTANGIBLE ASSETS - Changes in Goodwill (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2026 USD ($)
Goodwill [Roll Forward]
Beginning balance	$ 32,359
Impact of foreign currency translation adjustments	(218)
Ending balance	$ 32,141

Amount, after accumulated impairment loss, of asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized.

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+ Details

INTEST CORP 10-Q