Asset Sale (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2020	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2020
Asset Retirement Obligation Disclosure [Abstract]
Gain on sale of non-financial assets	$ 132,800	$ 132,818	$ 0	$ 132,818	$ 0
Proceeds from Sale of Productive Assets	$ 160,385				0
TerSera Maximum Development, Regulatory and Commercial Milestones				65,000
Xermelo Pretax Net Loss		(2,100)	(4,100)	(12,100)	(10,800)
Severance Costs				5,500
Debt Instrument [Line Items]
Gain (Loss) on Extinguishment of Debt		$ (255)	$ 0	(255)	$ 0
Severance Costs				5,500
R&D severance costs [Member]
Asset Retirement Obligation Disclosure [Abstract]
Severance Costs				2,500
Debt Instrument [Line Items]
Severance Costs				2,500
SG&A severance costs [Member]
Asset Retirement Obligation Disclosure [Abstract]
Severance Costs				3,000
Debt Instrument [Line Items]
Severance Costs				3,000
Forecast [Member]
Asset Retirement Obligation Disclosure [Abstract]
Severance Costs						$ 5,700
Debt Instrument [Line Items]
Severance Costs						$ 5,700
BioPharma [Member]
Debt Instrument [Line Items]
Gain (Loss) on Extinguishment of Debt				$ 8,600