Sale of Sumavel DosePro Business - Additional Information (Details) - USD ($)		3 Months Ended	12 Months Ended
	May 16, 2014	Dec. 31, 2016	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from divestiture of businesses			$ 0	$ 82,984,000	$ 89,624,000
Principal balance outstanding		$ 20,000,000	20,000,000
Net gain on sale of business			0	89,484,000	79,980,000
Imputed interest on working capital advance		1,176,000	1,176,000
Notes Payable, Other Payables [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Principal balance outstanding	$ 7,000,000
Endo Ventures Supply Agreement [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Imputed interest on working capital advance		4,748,000	4,748,000
Sumavel DosePro [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from divestiture of businesses	85,000,000
Escrow deposit	8,500,000
Net product revenue	$ 4,624,000
Cost of goods sold mark-up, in percent	2.50%
Non-contingent consideration received	$ 89,600,000
Divestiture of business, asset sale	85,300,000
Divestiture of business, supply agreement	4,400,000
Net gain on sale of business	79,980,000
Transaction costs				$ 660,000
Imputed interest on working capital advance	4,748,000
Deferred agreement payments	$ 9,108,000	1,194,000	$ 1,194,000
Impairment charges		8,431,000			$ 838,000
Sumavel DosePro [Member] | Long Lived Assets, Production [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Impairment charges		6,400,000
Sumavel DosePro [Member] | Long Lived Assets, Prepaid Royalties [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Impairment charges		$ 2,000,000