4. Inventories

6 Months Ended

Jun. 30, 2017

Inventory Disclosure [Abstract]

Inventories

Following is a summary of inventory at June 30, 2017 and December 31, 2016, in thousands:

		June 30,		December 31,
		2017		2016
Raw materials	$	5,578	$	5,235
Work in progress		1,541		1,636
Finished goods		3,488		4,587
Supplies		1,121		717
Total Inventories		11,728		12,175
Inventory reserve		(398)		(399)
Net Inventories	$	11,330	$	11,776