Sale of Algenist and Discontinued Operations Income Statement Reclassifications (Details) - USD ($)	3 Months Ended								5 Months Ended	12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	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]
Income tax provision	$ (223,000)	$ (1,839,000)	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0		$ (2,062,000)	$ 0	$ 0
Income (loss) from discontinued operations	$ 71,000	$ 5,852,000	$ (1,577,000)	$ (1,045,000)	$ (1,644,000)	$ 268,000	$ (736,000)	$ (953,000)		3,301,000	(3,065,000)	(980,000)
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									$ 8,843,000	13,674,000	23,278,000	24,429,000
Cost of product revenues										4,724,000	7,616,000	7,746,000
Sales, general and administrative										12,525,000	18,692,000	17,645,000
Total costs and operating expenses										17,249,000	26,308,000	25,391,000
Income (loss) before other expense										(3,575,000)	(3,030,000)	(962,000)
Other expense										(29,000)	(35,000)	(18,000)
Gain on sale of Algenist										8,967,000	0	0
Income (loss) from discontinued operations before income taxes										5,363,000	(3,065,000)	(980,000)
Income tax provision										2,062,000	0	0
Income (loss) from discontinued operations										$ 3,301,000	$ (3,065,000)	$ (980,000)