Note 10 - Customer and Geographic Information - Revenues by Geographic Area (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Revenues	$ 57,115,000	$ 46,409,000	$ 156,621,000	$ 129,380,000
Geographic Concentration Risk [Member] \| Revenue Benchmark [Member]
Concentration risk	100.00%	100.00%	100.00%	100.00%
Geographic Concentration Risk [Member] \| Revenue Benchmark [Member] \| UNITED STATES
Revenues	$ 30,143,000	$ 21,065,000	$ 68,325,000	$ 58,021,000
Concentration risk	53.00%	45.00%	43.00%	45.00%
Geographic Concentration Risk [Member] \| Revenue Benchmark [Member] \| JAPAN
Revenues	$ 10,091,000	$ 6,275,000	$ 31,131,000	$ 25,495,000
Concentration risk	18.00%	14.00%	20.00%	20.00%
Geographic Concentration Risk [Member] \| Revenue Benchmark [Member] \| CHINA
Revenues	$ 5,842,000	$ 5,673,000	$ 26,075,000	$ 17,526,000
Concentration risk	10.00%	12.00%	17.00%	14.00%
Geographic Concentration Risk [Member] \| Revenue Benchmark [Member] \| TAIWAN
Revenues	$ 1,238	$ 6,273	$ 4,235	$ 8,107
Concentration risk	2.00%	14.00%	3.00%	6.00%
Geographic Concentration Risk [Member] \| Revenue Benchmark [Member] \| Other Geographical Areas [Member]
Revenues	$ 9,801,000	$ 7,123,000	$ 26,855,000	$ 20,231,000
Concentration risk	17.00%	15.00%	17.00%	15.00%

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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+ Details

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