Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Operating activities:
Net loss	$ (18,998)	$ (6,209)
Adjustment to reconcile net loss to net cash used in operating activities
Depreciation	78	73
Share-based compensation expense	10,476
Impairment loss on capital projects		506
Changes in operating assets and liabilities
Prepaid expenses and other currents assets	53	234
Accounts payable	190	(473)
Accrued expenses and other liabilities	209	639
Net cash used in operating activities	(7,992)	(5,230)
Investing activities:
Acquisition of property, plant and equipment	(10,690)	(15,917)
Issuance of note receivable	(115)
Repayment of note receivable	115
Cash received in reverse recapitalization	26,774
Change in restricted cash		17,003
Investments	(54)	(5,009)
Net cash (used in) provided by investing activities	16,030	(3,923)
Financing activities:
Proceeds from equity issuances	30,100
Equity issuance costs	(5,953)
Net cash provided by financing activities	24,147
Net increase (decrease) in cash	32,185	(9,153)
Cash - Beginning of the period	12,524	27,127
Cash - End of the period	44,709	17,974
Non-cash investing activities:
Accounts payable for acquisition of property, plant and equipment	1,266	1,371
Accrued liabilities for acquisition of property, plant and equipment	$ 1,845	$ 875