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Fair Value - Additional Information (Details) - USD ($) $ in Thousands			12 Months Ended
	Oct. 02, 2020	Sep. 30, 2020	Dec. 31, 2020
Lincoln Park [Member] | 2020 Purchase Agreement [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Commitment shares issued as commitment fee	180,701
Change in fair value of commitment shares		$ 18,000
Series U Warrants [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Reclassification of number of warrants to equity from amendment of warrants			3,522,500
Series T Warrants [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Warrants expired unexercised date			2021-01

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- Definition

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- Definition

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