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Debt - Summary of Outstanding Note Balances (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 24, 2019
Debt Instrument [Line Items]
Principal	$ 207,000
Less: debt discount and debt issuance costs, net	(55,975)
Net carrying amount	151,025
Equity component	18,257
Derivative liability-conversion Option	37
Convertible Senior Secured Notes due 2024
Debt Instrument [Line Items]
Principal		$ 207,000
Less: debt discount and debt issuance costs, net		(69,381)
Net carrying amount		137,619
Equity component		18,257
Derivative liability-conversion Option		1,193		$ 59,400
Convertible Senior Notes due 2021
Debt Instrument [Line Items]
Principal	$ 69,000	69,000	$ 69,000
Less: debt discount and debt issuance costs, net		(1,029)
Net carrying amount		67,971
Equity component		$ 22,791