CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDER'S EQUITY (Parenthetical) $ in Thousands	3 Months Ended
Mar. 31, 2018 USD ($)
Common Stock
Issuance costs	$ 100
Follow On Offering \| Common Stock \| Stock Purchase Agreement
Issuance costs	$ 3,300

The cash outflow for cost incurred directly with the issuance of an equity security.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3291-108585

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