Net Income (Loss) per Common Share -Computation of basic and diluted net income per common share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Net income (loss) per share - Basic:
Net income (loss)	$ (4,178)	$ 115,738
Less: Undistributed earnings to preferred stockholders		(6,132)
Net income (loss) applicable to common stockholders	(4,178)	109,606
Numerator for basic net income (loss) applicable to common stockholders	$ (4,178)	$ 109,606
Denominator for basic net income (loss) applicable to common stockholders	52,893	41,193
Net income (loss) income applicable to common stockholders - basic	$ (0.08)	$ 2.66
Net income (loss) per share - Diluted:
Net income (loss)	$ (4,178)	$ 109,606
Less: Warrant revaluation gain applicable to dilutive liability-classified warrants		(6,983)
Less: Future tranche right revaluation gain applicable to dilutive liability-classified future tranche rights		(118,803)
Numerator for diluted net income (loss) applicable to common stockholders	$ (4,178)	$ (10,048)
Denominator for basic net income (loss) applicable to common stockholders	52,893	41,193
Plus: Incremental shares underlying "in the money" liability-classified warrants outstanding		1,449
Plus: Incremental shares underlying "in the money" liability-classified future tranche rights outstanding		28,338
Denominator for diluted net income (loss) applicable to common stockholders	52,893	70,980
Net income (loss) applicable to common stockholders - diluted	$ (0.08)	$ (0.14)