Note 6 - Property and Equipment - Schedule of Property and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Total property and equipment–at cost	$ 7,135	$ 7,269
Less: Accumulated depreciation and amortization	(5,568)	(5,026)
Property and equipment, net	1,567	2,243
Equipment [Member]
Total property and equipment–at cost	5,137	5,351
Furniture and Fixtures [Member]
Total property and equipment–at cost	22	22
Leasehold Improvements [Member]
Total property and equipment–at cost	1,612	1,531
Software Development [Member]
Total property and equipment–at cost	$ 364	$ 365