Sale of Algenist and Discontinued Operations Sale of Algenist and Discontinued Operations Summarized Financial Information (Details) - USD ($) $ in Thousands	5 Months Ended	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Current assets of discontinued operations	$ 0	$ 0	$ 13,389
Current liabilities of discontinued operations	0	0	2,914
Noncurrent liabilities of discontinued operations	0	0	26
Discontinued Operations, Disposed of by Sale | Algenist skincare
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Current assets of discontinued operations	14,883	14,883	13,389
Property, plant and equipment, net	666	666	348
Other assets	15,044	15,044
Total assets	30,593	30,593
Current liabilities of discontinued operations	2,580	2,580	2,914
Noncurrent liabilities of discontinued operations	1	1	26
Stockholders' equity	28,012	28,012
Total liabilities and stockholders' equity	30,593	30,593
Net sales	8,843	$ 13,674	$ 23,278	$ 24,429
Gross profit	5,861
Net income	$ (768)