Discontinued Operations, Sale of the Cold-EEZE® Business - Schedule of Proceeds from Sale of Business (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Discontinued Operations and Disposal Groups [Abstract]
Gross consideration from the sale of the Cold-EEZE® Business			$ 50,000
Closing and transaction costs			(4,175)
Net proceeds from sale of the Cold-EEZE®; Business			45,825
Book value of assets sold			(13)
Gain on sale of the Cold-EEZE® Business before income taxes			45,812
Income tax expense			(3,511)
Gain on sale of the Cold-EEZE® Business after income taxes		$ (584)		$ 42,684
Cash paid at closing, net of closing and transaction costs			43,145
Proceeds due on sale of assets, cash held in escrow (see Note 8)			5,000
Net proceeds from the sale of assets			$ 48,145