Note 2 - Revenue from Contracts with Customers - Revenue by Geographic Area (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Total revenues	$ 61,529	$ 51,728	$ 121,659	$ 99,506
Geographic Concentration Risk [Member] \| Revenue Benchmark [Member]
Total revenues	$ 61,529	$ 51,728	$ 121,659	$ 99,506
Concentration risk	100.00%	100.00%	100.00%	100.00%
Geographic Concentration Risk [Member] \| Revenue Benchmark [Member] \| UNITED STATES
Total revenues	$ 34,036	$ 19,954	$ 58,543	$ 38,182
Concentration risk	55.00%	39.00%	48.00%	39.00%
Geographic Concentration Risk [Member] \| Revenue Benchmark [Member] \| JAPAN
Total revenues	$ 6,563	$ 9,304	$ 15,242	$ 21,040
Concentration risk	11.00%	18.00%	13.00%	21.00%
Geographic Concentration Risk [Member] \| Revenue Benchmark [Member] \| CHINA
Total revenues	$ 8,723	$ 12,190	$ 17,237	$ 20,233
Concentration risk	14.00%	23.00%	14.00%	20.00%
Geographic Concentration Risk [Member] \| Revenue Benchmark [Member] \| Other Geographical Areas [Member]
Total revenues	$ 12,207	$ 10,280	$ 30,637	$ 20,051
Concentration risk	20.00%	20.00%	25.00%	20.00%

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.

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
-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
-Topic 280
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Reference 4: http://www.xbrl.org/2003/role/disclosureRef
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Reference 5: http://www.xbrl.org/2003/role/disclosureRef
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Reference 6: http://www.xbrl.org/2003/role/disclosureRef
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Reference 7: http://www.xbrl.org/2003/role/disclosureRef
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Reference 10: http://www.xbrl.org/2003/role/disclosureRef
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Reference 11: http://www.xbrl.org/2003/role/disclosureRef
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+ Details