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Acquisitions -Business Acquisition, Pro Forma Information (Details) - Agilis - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Pro Forma
Revenues	$ 264,734	$ 194,392
Net loss attributable to common stockholders	(138,083)	$ (93,333)
Acquisition-related Costs
Pro Forma
Net loss attributable to common stockholders	$ 1,700

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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/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
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The pro forma revenue for a period as if the business combination or combinations had been completed at the beginning of the period.

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