Note 12 - Common Stock and Stock-based Compensation Plans - Equity-based Compensation Expense Included in Interim Condensed Consolidated Statements of Income (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Total equity-based compensation expense	$ 4,242	$ 3,691	$ 12,306	$ 10,383
Cost of Revenues [Member]
Total equity-based compensation expense	216	187	636	511
Research and Development, Net [Member]
Total equity-based compensation expense	2,257	2,105	6,703	5,988
Sales and Marketing [Member]
Total equity-based compensation expense	478	380	1,305	1,030
General and Administrative [Member]
Total equity-based compensation expense	1,018	699	2,787	2,004
Total Equity-based Compensation Expense From Continuing Operations [Member]
Total equity-based compensation expense	3,969	3,371	11,431	9,533
Equity-based Compensation Expense Included in Discontinued Operations [Member]
Total equity-based compensation expense	$ 273	$ 320	$ 875	$ 850