Note 3 - Reserve for Sales Returns and Allowance - Reserve for Sales Returns and Allowances (Details) - Allowance For Sales Returns 1 [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Balance at the beginning of year	$ 2,636	$ 3,365
Provision for returns and allowances	4,512	4,911
Actual returns and allowances paid to customers	(5,058)	(5,640)
Balance at the end of year	$ 2,090	$ 2,636