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Share incentive plan (Details 2) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Share-based Compensation	$ 700	$ 2,623	$ 736
Research and development expenses [Member]
Share-based Compensation	531	381	83
Pre-commercialization expenses [Member]
Share-based Compensation	(147)	159	0
General and administrative expenses [Member]
Share-based Compensation	$ 316	$ 2,083	$ 653

X

- Definition

The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585

+ Details

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Balance Type:	debit
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- Details

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- Details

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X

- Details

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