4. Inventories

3 Months Ended

Mar. 31, 2017

Inventory Disclosure [Abstract]

Inventories

Following is a summary of inventory at March 31, 2017 and December 31, 2016, in thousands:

		March 31,		December 31,
		2017		2016
Raw materials	$	4,590	$	5,235
Work in progress		1,192		1,636
Finished goods		3,221		4,587
Supplies		737		717
Total Inventories		9,740		12,175
Inventory reserve		(379)		(399)
Net Inventories	$	9,361	$	11,776