Organization and Basis of Presentation Narrative (Details)			1 Months Ended	3 Months Ended		6 Months Ended
	Jul. 01, 2015 shares	Apr. 24, 2015 USD ($)	Apr. 30, 2015 employee	Jun. 30, 2015 USD ($) shares	Jun. 30, 2014 USD ($)	Jun. 30, 2015 USD ($) shares	Jun. 30, 2014 USD ($)	Dec. 31, 2014 shares
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net product revenue				$ 0	$ 3,355,000	$ 0	$ 9,840,000
Number of positions committed to be eliminated | employee			16
Common stock shares authorized | shares				50,000,000		50,000,000		50,000,000
Subsequent event
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Common stock conversion ratio	0.125
Common stock shares authorized | shares	50,000,000
Zohydro ER
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Restricted cash		$ 10,000,000
Cash proceeds, net		80,000,000
Zohydro ER | Ferrimill Limited
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net product revenue		$ 900,000