Note 5 - Inventory (Tables)

3 Months Ended

Mar. 31, 2019

Notes Tables

Schedule of Inventory, Current [Table Text Block]

	March 31,			December 31,
(in thousands)	2019			2018
Raw materials and supplies	$	188		$	217
Finished goods		224			167
Less: Reserve for excess and obsolete inventory		(110	)		(104	)
Total inventory, net	$	302		$	280