Intangible Assets, Net - Schedule of Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 23,100	$ 34,320
Accumulated Amortization	(7,517)	(6,278)
Accumulated Impairment Charges	0	(9,939)
Net Book Value	$ 15,583	$ 18,103
Docetaxel product rights
Finite-Lived Intangible Assets [Line Items]
Useful Life (In Years)		10 years
Gross Carrying Amount		$ 11,220
Accumulated Amortization		(1,281)
Accumulated Impairment Charges		(9,939)
Net Book Value		$ 0
Ryanodex intangible
Finite-Lived Intangible Assets [Line Items]
Useful Life (In Years)	20 years	20 years
Gross Carrying Amount	$ 15,000	$ 15,000
Accumulated Amortization	(2,454)	(1,554)
Accumulated Impairment Charges	0	0
Net Book Value	$ 12,546	$ 13,446
Developed technology
Finite-Lived Intangible Assets [Line Items]
Useful Life (In Years)	5 years	5 years
Gross Carrying Amount	$ 8,100	$ 8,100
Accumulated Amortization	(5,063)	(3,443)
Accumulated Impairment Charges	0	0
Net Book Value	$ 3,037	$ 4,657