Discontinued Operations - Schedule of Gain on Sale of Business (Details) - USD ($) $ in Thousands		12 Months Ended
	Sep. 01, 2016	Dec. 31, 2016	Dec. 31, 2017
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net cash proceeds		$ 69,790
Discontinued operations, disposed of by sale | International operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Consideration received	$ 80,000
Cash included in assets sold	(4,250)	$ (159)	$ (127)
Transaction costs	(5,960)
Net cash proceeds	69,790
Product supply obligation	(1,927)
Working capital adjustment	(2,295)
Carrying value of business and assets sold	(57,633)
Net gain on sale of business	$ 7,935