Business Combination - Pro forma combined revenue and net loss (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
Dec. 31, 2017	Dec. 31, 2016
Business Combination
Pro forma revenue	$ 294,446	$ 223,532
Pro forma net loss	$ (37,267)	$ (27,959)
Pro forma net loss per share, basic and diluted	$ (0.76)	$ (0.60)

Pro forma diluted and basic and diluted earnings per share, which is commonly presented in initial public offerings.

No definition available.

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- Definition

The pro forma net Income or Loss for the period as if the business combination or combinations had been completed at the beginning of a period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(2)-(3)
-URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463

+ Details

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- Definition

The pro forma revenue for a period as if the business combination or combinations had been completed at the beginning of the period.

+ References

+ Details

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- References

No definition available.

+ Details

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