CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Cash flows from operating activities:
Net cash used in operating activities	$ (8,030)	$ (12,147)
Cash flows from investing activities:
Proceeds from sale of assets	416	973
Capitalized costs and acquisitions of property, plant and equipment	(44)	(427)
Net cash provided by investing activities	372	546
Cash flows from financing activities:
Proceeds from issuance of stock units, net of issue costs		7,410
Net cash provided by financing activities		7,410
Net decrease in cash and cash equivalents	(7,658)	(4,191)
Cash and cash equivalents - beginning of period	8,579	19,146
Cash and cash equivalents - end of period	$ 921	$ 14,955