Summary of Significant Accounting Policies (Details) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2021 USD ($)	Sep. 30, 2020 USD ($)	Sep. 30, 2021 USD ($) customer revenue_source	Sep. 30, 2020 USD ($)	Dec. 31, 2020 USD ($) customer	Jan. 01, 2021 USD ($)	Dec. 31, 2019 USD ($)
Summary of Significant Accounting Policies
Restricted cash	$ 50,000	$ 0	$ 50,000	$ 0	$ 0		$ 928
Number of revenue sources | revenue_source			2
Total Revenues	14,409	3,833	$ 63,046	217,909
Convertible notes, net of issuance costs	272,508		272,508		179,367
Accumulated Deficit	1,041,258		1,041,258		838,817
Additional Paid in Capital	(733,524)		(733,524)		$ (797,655)
Product sales, net
Summary of Significant Accounting Policies
Total Revenues	$ 10,895	$ 3,331	$ 27,855	$ 4,798
Cumulative Effect, Period of Adoption, Adjustment
Summary of Significant Accounting Policies
Convertible notes, net of issuance costs						$ 92,000
Accumulated Deficit						1,500
Additional Paid in Capital						$ 93,500
Trade Receivables | Customer Concentration Risk
Summary of Significant Accounting Policies
Number of major customers | customer			10		8