Note 2 - Summary of Significant Accounting Policies (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Accounts Receivable, Allowance for Credit Loss, Ending Balance	$ 3,032	$ 3,443
Deferred Tax Assets, Valuation Allowance	25,676	26,835
Domestic Tax Authority [Member]
Operating Loss Carryforwards	39,220	47,800
State and Local Jurisdiction [Member]
Operating Loss Carryforwards	$ 120,400	$ 28,740
Leasehold Improvements [Member]
Property, Plant and Equipment, Useful Life (Year)	15 years