Note 3 - Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2021

Notes Tables

Schedule of Inventory, Current [Table Text Block]

	December 31, 2021		December 31, 2020
Description	(in thousands)
Raw Materials	$	132	$	143
Work-in-Progress		338		-
Finished Goods		1,988		-
Total Inventory	$	2,458	$	143

Incremental Weighted Average Shares Attributable to Dilutive Effect [Table Text Block]

	December 31, 2021		December 31, 2020
Stock Options		3,498,297		2,979,047
Warrants		6,596,096		7,935,503
Convertible Preferred Stock		6,476,275		9,399,758
Total Potential Dilutive Shares		16,570,668		20,314,308