Segment Information (Details) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2020 USD ($)	Jun. 30, 2019 USD ($)	Jun. 30, 2020 USD ($) segment	Jun. 30, 2019 USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments \| segment			2
Revenue, net	$ 2,046	$ 886	$ 3,453	$ 2,149
Cost of revenue	1,389	994	2,658	2,201
Research and development	6,466	17,519	15,909	37,161
General and administrative	5,572	7,469	11,773	14,926
Goodwill impairment		18,504		18,504
Loss from operations	(11,381)	(43,600)	(26,887)	(70,643)
Loss from discontinued operations	(27)	(6,191)	(285)	(16,483)
Dermatology Therapeutics Segment
Segment Reporting Information [Line Items]
Revenue, net	193		411
Research and development	6,577	17,615	16,121	37,352
General and administrative		359		477
Goodwill impairment		18,504		18,504
Loss from operations	(6,384)	(36,478)	(15,710)	(56,333)
Loss from discontinued operations	(27)	(5,298)	(284)	(14,720)
Contract Research Segment
Segment Reporting Information [Line Items]
Revenue, net	3,657	3,807	7,064	8,995
Cost of revenue	3,082	3,819	6,468	8,856
General and administrative	688	613	1,440	1,145
Loss from operations	(113)	(625)	(844)	(1,006)
Corporate and Other
Segment Reporting Information [Line Items]
Revenue, net	(1,804)	(2,921)	(4,022)	(6,846)
Cost of revenue	(1,693)	(2,825)	(3,810)	(6,655)
Research and development	(111)	(96)	(212)	(191)
General and administrative	4,884	6,497	10,333	13,304
Loss from operations	$ (4,884)	(6,497)	(10,333)	(13,304)
Loss from discontinued operations		$ (893)	(1)	(1,763)
Intersegment Eliminations \| Contract Research Segment
Segment Reporting Information [Line Items]
Revenue, net			$ (4,022)	$ (6,846)

The aggregate cost of goods produced and sold and services rendered during the reporting period.

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