Organization and Business (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2018 USD ($) product segment	Mar. 31, 2017 USD ($)
Summary of Significant Accounting Policies Details [Line Items]
Segments | segment	1
Net (loss) income	$ (4,802)	$ 831
Net decrease in cash, cash equivalents and restricted cash	(13,643)	$ (6,660)
Payments for (proceeds from) investments	4,100
Capital expenditures	11,800
Shelf offering	50,000
Prior period reclassification adjustment	200
Revenue recognition, sales returns, reserve for sales returns	$ 600
United States
Summary of Significant Accounting Policies Details [Line Items]
Generic products marketed | product	26
Branded generic products marketed | product	4
Minimum | Canada
Summary of Significant Accounting Policies Details [Line Items]
Generic and branded products marketed | product	30
Cost of Sales
Summary of Significant Accounting Policies Details [Line Items]
Prior period reclassification adjustment	$ (800)