Sale of Algenist and Discontinued Operations Gain On Sale Components (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
	Aug. 16, 2016	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Discontinued Operations, Disposed of by Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain on sale of Algenist before income taxes		$ 8,673
Algenist skincare
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total consideration received	$ 20,200
Algenist skincare | Discontinued Operations, Disposed of by Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash received, net of closing costs	18,836
Retained 19.9% interest in Algenist at fair value	1,600
Total consideration received	20,436
Net assets sold (primarily working capital)	(11,763)
Gain on sale of Algenist before income taxes	$ 8,673		$ 0	$ 8,673	$ 0