Sale of Algenist and Discontinued Operations Income Statement Reclassifications (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
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Benefit from income taxes		$ (1,839)	$ 0	$ (1,839)	$ 0
Income (loss) from discontinued operations		5,852	268	3,230	(1,421)
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		8,673
Algenist skincare | Discontinued Operations, Disposed of by Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total revenues		2,204	6,882	13,674	18,284
Cost of product revenues		936	2,159	4,724	5,826
Sales, general and administrative		2,233	4,453	12,525	13,879
Total costs and operating expenses		3,169	6,612	17,249	19,705
Income (loss) before other expense		(965)	270	(3,575)	(1,421)
Other expense		(17)	(2)	(29)	0
Gain on sale of Algenist	$ 8,673		0	8,673	0
Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax		7,691	268	5,069	(1,421)
Benefit from income taxes		1,839	0	1,839	0
Income (loss) from discontinued operations		$ 5,852	$ 268	$ 3,230	$ (1,421)