Note 1 - Significant Accounting Policies and Related Matters - Allowance for Doubtful Accounts and Sales Returns (Details) - Allowance for Doubtful Accounts and Sales Returns [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Year ended December 31, 2023	$ 835	$ 679	$ 623
Year ended December 31, 2023	344	637	263
Deductions from Reserves	238	481	207
Year ended December 31, 2023	$ 941	$ 835	$ 679