Business Combination (Details) - Selected amounts related to Aviragen’s business included in the Company’s condensed consolidated sta $ in Thousands	3 Months Ended
Mar. 31, 2018 USD ($)
Selected amounts related to Aviragen’s business included in the Company’s condensed consolidated sta [Abstract]
Revenue	$ 893,000
Net loss	$ (362,000)

The revenues and gains recognized recorded for each transaction with the acquiree that is recognized separately from the acquisition of assets and assumptions of liabilities in the business combination.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (e)(3)
-URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration