Note 15 - Income Taxes - Deferred Income Tax Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Loss and credit carryforwards	$ 12,126	$ 8,771
Stock-based compensation	2,524	2,890
Research and development capitalization	2,890	2,178
Lease liabilities	1,153	1,276
Accrued insurance deductibles	653	798
Interest expense limitation	1,429	599
Accrued bonuses	0	408
Deferred revenue	310	325
Inventory 263A adjustment	157	231
Other	814	556
Total deferred tax assets	22,056	18,032
Valuation allowance	(20,697)	(16,443)
Total deferred tax assets, net of valuation allowance	1,359	1,589
Lease right-of-use assets	(1,116)	(1,253)
Property and equipment	(134)	(165)
Other	(109)	(171)
Total deferred tax liabilities	(1,359)	(1,589)
Net deferred tax assets	$ 0	$ 0