Note 2 - Significant Accounting Policies - Inventory Balance (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Raw materials	$ 1,679	$ 4,569
Work-in-process (materials, labor and overhead)	2,661	1,385
Finished goods (materials, labor and overhead)	186	1,155
Total Inventories	$ 4,526	$ 7,109

Carrying amount, net of valuation reserves and adjustments, as of the balance sheet date of merchandise or goods held by the company that are readily available for sale.

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