Note 11 - Employee Benefits Plan (Details Textual) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
401(k) Plan [Member]
Defined Contribution Plan, Employer Discretionary Contribution Amount	$ 3.5	$ 2.4	$ 1.3
Provident Fund Plan and Gratuity Plan [Member]
Defined Contribution Plan, Employer Discretionary Contribution Amount	$ 2.0	$ 1.7	$ 1.4