CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Cash flows from operating activities:
Net cash used in operating activities	$ (1,087)	$ (2,018)
Cash flows from investing activities:
Proceeds from sale of assets	115	50
Net cash from investing activities	115	50
Cash flows from financing activities:
Proceeds from issuance of common stock	449
Net cash from financing activities	449
Net decrease in cash and cash equivalents	(523)	(1,968)
Cash and cash equivalents, beginning of period	2,588	4,077
Cash and cash equivalents, end of period	$ 2,065	$ 2,109