Note 15 - Consolidated Balance Sheet Detail - Accrued Liabilities and Other Current Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Accrued compensation	$ 4,535	$ 4,351
Accrued expenses	1,372	1,656
Deferred revenue, current	895	814
Accrued taxes	33	27
Other	131	294
Total accrued expenses and other current liabilities	$ 6,966	$ 7,142