Note 5 - Goodwill and Intangible Assets - Schedule of Goodwill (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Goodwill	$ 30,744	$ 21,728	$ 21,605
Electronic Test [Member]
Goodwill	12,567	3,436
Environmental Technologies [Member]
Goodwill	1,817	1,817
Process Technologies [Member]
Goodwill	$ 16,360	$ 16,475