Note 14 - Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Net operating loss carryforwards	$ 75,235	$ 74,807
Accrual and reserves	4,637	3,531
Leases	3,532	3,834
Other	4	4
Total noncurrent deferred tax assets	83,408	82,176
Valuation allowance	(76,516)	(74,559)
Noncurrent deferred tax assets, net of valuation allowance	6,892	7,617
Fixed assets	2,364	2,584
Intangible assets	(487)	(674)
Leases	4,016	4,344
Total noncurrent deferred tax liabilities	6,867	7,602
Net deferred income tax asset	$ 25	$ 15