Note 5 - Inventory (Tables)

12 Months Ended

Dec. 31, 2019

Notes Tables

Schedule of Inventory, Current [Table Text Block]

(in thousands)	December 31,			December 31,
	2019			2018
Raw materials and supplies	$	185		$	217
Finished goods		554			167
Less: Reserve for excess and obsolete inventory		(247	)		(104	)
Total inventory, net	$	492		$	280