Note 15 - Other Financial Statement Information (Tables)

12 Months Ended

Dec. 31, 2023

Notes Tables

Schedule of Inventory, Current [Table Text Block]

	December 31,
	2023			2022
Raw materials	$	271		$	307
Work in process		9			7
Total gross inventory		280			314
Reserve for excess and obsolete inventory		(76	)		(49	)
Inventories, net	$	204		$	265

Property, Plant and Equipment [Table Text Block]

	December 31,
	2023			2022
Machinery and equipment	$	639		$	639
Gross property, plant and equipment		639			639
Less: Accumulated depreciation		(639	)		(638	)
Property, plant and equipment, net	$	—		$	1

Schedule of Finite-Lived Intangible Assets [Table Text Block]

	December 31,
	2023			2022
Intellectual property	$	214		$	214
Gross intangible assets		214			214
Less: Accumulated amortization		(157	)		(136	)
Intangible assets, net	$	57		$	78