Derivative Liability - Main Inputs to Valuing Convertible Notes with Conversion Option (Details) - 2026 Convertible Notes	Dec. 31, 2021	Dec. 31, 2020
Company's stock price
Derivative Liability
Debt instrument, measurement input	6.97	20.70
Expected annual volatility
Derivative Liability
Debt instrument, measurement input	0.826	1.055
Bond yield
Derivative Liability
Debt instrument, measurement input	0.126	0.120

Value of input used to measure debt instrument, including, but not limited to, convertible and non-convertible debt.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (bbb)(2)
-URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258

Name:	us-gaap_DebtInstrumentMeasurementInput
Namespace Prefix:	us-gaap_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	instant