Note 10 - CUSTOMER AND GEOGRAPHIC INFORMATION - Revenues by Geographic Area (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Revenues	$ 39,860	$ 29,555	$ 108,026	$ 81,174
Geographic Concentration Risk [Member] | Revenue Benchmark [Member]
Revenues	$ 39,860	$ 29,555	$ 108,026	$ 81,174
Concentration risk	100.00%	100.00%	100.00%	100.00%
Geographic Concentration Risk [Member] | Revenue Benchmark [Member] | UNITED STATES
Revenues	$ 18,292	$ 13,983	$ 52,869	$ 34,634
Concentration risk	46.00%	47.00%	49.00%	43.00%
Geographic Concentration Risk [Member] | Revenue Benchmark [Member] | CHINA
Revenues	$ 9,555	$ 4,038	$ 18,214	$ 10,065
Concentration risk	24.00%	14.00%	17.00%	12.00%
Geographic Concentration Risk [Member] | Revenue Benchmark [Member] | JAPAN
Revenues	$ 2,818	$ 2,515	$ 8,219	$ 8,543
Concentration risk	7.00%	9.00%	8.00%	10.00%
Geographic Concentration Risk [Member] | Revenue Benchmark [Member] | Rest of the World [Member]
Revenues	$ 9,195	$ 9,019	$ 28,724	$ 27,932
Concentration risk	23.00%	30.00%	26.00%	35.00%