Note 5 - Inventory (Tables)

3 Months Ended

Mar. 31, 2020

Notes Tables

Schedule of Inventory, Current [Table Text Block]

(in thousands)	March 31,			December 31,
	2020			2019
Raw materials and supplies	$	168		$	185
Finished goods		614			554
Less: Reserve for excess and obsolete inventory		(230	)		(247	)
Total inventory, net	$	552		$	492