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Goodwill and Intangible Assets - Summary of Intangible Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items]
Intangible assets	$ 8,500	$ 17,600
NPS
Finite-Lived Intangible Assets [Line Items]
Intangible assets	5,700	5,700
GALE-401
Finite-Lived Intangible Assets [Line Items]
Intangible assets	0	9,100
GALE-301 And GALE-302
Finite-Lived Intangible Assets [Line Items]
Intangible assets	$ 2,800	$ 2,800

X

- Definition

Amount of intangible assets, excluding goodwill, acquired at the acquisition date.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=84161108&loc=d3e4845-128472

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- Definition

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+ References

No definition available.

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