Note 4 - Inventories 1 (Tables)

9 Months Ended

12 Months Ended

Sep. 30, 2019

Dec. 31, 2018

Notes Tables

Schedule of Inventory, Current [Table Text Block]

	September 30,		December 31,
	2019		2018
Raw materials	$	1,898	$	2,102
Work-in-process		544		158
Finished products		1,670		1,162
Total inventories	$	4,112	$	3,422

	December 31,
	2018		2017
Raw materials	$	1,162	$	1,286
Work-in-process		158		-
Finished products		2,102		3,009
Total inventories	$	3,422	$	4,295