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Fair Value Measurement - Valuation Techniques and Significant Unobservable Inputs (Details) - Fair Value, Recurring $ in Thousands	Dec. 31, 2020 USD ($)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	$ 13,730
Level 3
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	13,730
Level 3 | Warrants | Black-Scholes
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	$ 13,730
Level 3 | Warrants | Black-Scholes | Stock price volatility
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Assumption or Input Ranges	0.622
Level 3 | Warrants | Black-Scholes | Annual risk free rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Assumption or Input Ranges	0.002

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- Definition

Value of input used to measure outstanding warrant and right embodying unconditional obligation requiring redemption by transferring asset at specified or determinable date or upon event certain to occur.

+ References

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

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