Note 16 - Income Taxes - Significant Components of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Deferred tax assets:
Accrued expenses	$ 2,254	$ 2,511
Section 174 expenses	8,119	0
Leases	4,822	1,830
Warrants and stock options	4,087	4,271
Inventories	198	205
Research and development credit	2,374	2,126
Other assets	838	1,111
Net operating loss	16,586	14,046
Less valuation allowance	(17,562)	(13,999)
Total deferred tax assets	21,716	12,101
Deferred tax liabilities:
Depreciation	(29,397)	(31,897)
Goodwill	(10,716)	(9,872)
Intangible assets	(3,103)	(4,394)
Leases	(4,822)	(1,830)
Total deferred tax liabilities	(48,038)	(47,993)
Net deferred tax liability	$ (26,322)	$ (35,892)