Note 13 - Related Party Transactions (Details Textual) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended	6 Months Ended
Jul. 31, 2020	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025	Dec. 31, 2025
Revenue from Contract with Customer, Including Assessed Tax		$ 61,529	$ 51,728	$ 121,659	$ 99,506
Contract with Customer, Liability		21,090		21,090		$ 20,306
Advantest [Member] \| Strategic Partnership [Member]
Proceeds from Issuance of Common Stock	$ 65,200
Revenue from Contract with Customer, Including Assessed Tax		$ 200	$ 3,500	$ 700	$ 7,100
Contract with Customer, Liability						$ 8,300

Amount, including tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value-added and excise.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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Reference 4: http://www.xbrl.org/2003/role/disclosureRef
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+ Details