GOODWILL AND INTANGIBLE ASSETS - Schedule of Goodwill (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Goodwill [Line Items]
Goodwill	$ 32,359	$ 30,744	$ 21,728
Electronic Test
Goodwill [Line Items]
Goodwill	13,957	12,567
Environmental Technologies
Goodwill [Line Items]
Goodwill	1,817	1,817
Process Technologies
Goodwill [Line Items]
Goodwill	$ 16,585	$ 16,360

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

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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+ Details

INTEST CORP 10-K