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Debt - Narrative (Details) - USD ($) $ in Thousands	1 Months Ended		12 Months Ended
Debt - Narrative (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Sep. 30, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	May 31, 2014
Debt Instrument [Line Items]
Loss on extinguishment of debt			$ 0	$ 4,876	$ 0
Term Loan \| Second Amendment [Member]
Debt Instrument [Line Items]
Repayments of debt	$ 20,000
Loss on extinguishment of debt	1,500
Write-off of unamortized debt issuance costs and discount	$ 1,900
Endo Ventures manufacturing and supply agreement
Debt Instrument [Line Items]
Notes payable		$ 7,000
Endo Ventures manufacturing and supply agreement \| Notes payable
Debt Instrument [Line Items]
Notes payable						$ 7,000
Imputed interest on working capital advance						$ 4,700
Write-off of unamortized discount		$ 3,400