Warrant and Derivative Liabilities - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended	7 Months Ended
	Jun. 08, 2020	Mar. 31, 2021	Dec. 31, 2020
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Warrant liability	$ 7,300	$ 5,850	$ 7,768
Fair value adjustment of warrants			1,900
Fair value of embedded derivative liability	$ 800	1,500	1,100
Adjustment to embedded derivative, fair value of embedded derivative liability		500
Change in fair value		(2,780)
Conversion feature, fair value		12,900
Derivative liability		3,601	6,163
Fair Value, Inputs, Level 3
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Warrant liability		5,900	7,800
Redeemable Preferred Stock
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Change in fair value		(3,249)
Derivative liability		1,861	5,110
Derivative, gain (loss) on derivative, net		(3,200)
Junior Convertible Note
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Change in fair value		(18)
Derivative liability		$ 200	$ 0
Senior Convertible Note
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Warrants to purchase common stock (in shares)	15,000,000
Exercise price of warrants or rights (in dollars per share)	$ 0.58	$ 0.37