Debt - Convertible Notes - Schedule of Convertible Note (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Convertible notes	$ 88,960	$ 66,196
Convertible Note
Debt Instrument [Line Items]
Principal	78,377	69,245
Less: debt issuance costs		(38)
Debt premium (discount)	10,120	(8,145)
Accrued interest	463	5,134
Convertible notes	$ 88,960	$ 66,196

Amount, after accumulated amortization, of debt discount (premium).

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Name:	us-gaap_DebtInstrumentUnamortizedDiscountPremiumNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant