Note 2 - Business Acquisition, Goodwill and Purchased Intangible Assets - Preliminary Allocation of Intangible Assets (Details) - Equiptest Engineering Pte Ltd. (“EQT”) [Member] $ in Millions	Oct. 02, 2023 USD ($)
Intangible assets, estimated fair value	$ 34.5
Developed Technology Rights [Member]
Finite-lived intangible assets, estimated fair value	$ 20.6
Finite-lived intangible assets, average useful life (Year)	8 years
Customer Relationships [Member]
Finite-lived intangible assets, estimated fair value	$ 12.9
Finite-lived intangible assets, average useful life (Year)	10 years
Order or Production Backlog [Member]
Finite-lived intangible assets, estimated fair value	$ 0.1
Finite-lived intangible assets, average useful life (Year)	1 year
Trademarks and Trade Names [Member]
Finite-lived intangible assets, estimated fair value	$ 0.9
Finite-lived intangible assets, average useful life (Year)	5 years