The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585

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The aggregate amount of write-downs for impairments recognized during the period for long-lived assets held for abandonment, exchange or sale.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 45
-Paragraph 15
-URI http://asc.fasb.org/extlink&oid=51824106&loc=d3e2611-110228

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585

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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

No definition available.

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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

+ References

No definition available.

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Summary of Significant Accounting Policies - Property and Equipment, Net Narrative (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Property, Plant and Equipment [Line Items]
Depreciation		$ 1,402	$ 1,621	$ 1,625
Computer equipment and software [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, useful life		3 years
Furniture and fixtures [Member] \| Minimum [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, useful life		3 years
Furniture and fixtures [Member] \| Maximum [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, useful life		7 years
Manufacturing equipment and tooling [Member] \| Minimum [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, useful life		3 years
Manufacturing equipment and tooling [Member] \| Maximum [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, useful life		15 years
Sumavel DosePro [Member]
Property, Plant and Equipment [Line Items]
Impairment charges	$ 8,431			$ 838
Long Lived Assets, Production [Member] \| Sumavel DosePro [Member]
Property, Plant and Equipment [Line Items]
Impairment charges	$ 6,400