CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Cash flows from operating activities:
Net cash used in operating activities	$ (1,269)	$ (3,774)
Cash flows from investing activities:
Proceeds from sale of assets	733	50
Capitalized costs and acquisitions of property, plant and equipment		(20)
Net cash from investing activities	733	30
Cash flows from financing activities:
Proceeds from issuance of common stock	674	3,599
Net cash from financing activities	674	3,599
Net increase (decrease) in cash and cash equivalents	138	(145)
Cash and cash equivalents, beginning of period	2,588	4,077
Cash and cash equivalents, end of period	$ 2,726	$ 3,932