Essentialis, Inc. Acquisition - Pro Forma Information (Details) - Essentialis, Inc. [Member] - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
Mar. 31, 2017	Mar. 31, 2016
Business Acquisition [Line Items]
Pro forma total revenue	$ 265	$ 447
Pro forma net loss	$ (4,233)	$ (3,814)
Pro forma net loss per share - basic and diluted (in usd per share)	$ (0.09)	$ (0.10)
Proforma weighted-average shares - basic and diluted (in shares)	44,841,090	38,759,486

Business Acquisition, Pro Forma Earnings Per Share, Basic and Diluted

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Pro Forma Weighted Average Shares Outstanding, Basic and Diluted

+ References

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

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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=65885119&loc=d3e1392-128463

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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.

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