Stockholders' Deficit - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands				1 Months Ended
	Mar. 31, 2021	Dec. 23, 2020	Feb. 12, 2020	Apr. 30, 2021	Feb. 27, 2020	Jun. 30, 2021	Jun. 30, 2020	Mar. 31, 2020	Feb. 11, 2020	Dec. 31, 2019
Class of Stock [Line Items]
Common stock, shares issued (in shares)	40,531,996		4,171,571			40,662,020			50,325,662
Common stock, shares outstanding (in shares)	40,531,996		4,171,571			40,662,020			50,325,662
Shares issued in connection with the Reverse Merger (in shares)			1,650,000
Total common and preferred stock authorized for issuance (in shares)										755,000,000
Common stock, shares authorized (in shares)						750,000,000
Common stock, par value (in usd per share)	$ 0.0001					$ 0.0001				$ 0.0001
Par Value Per Share (in usd per share)										$ 0.0001
Preferred stock, shares issued (in shares)						0
Preferred stock, shares outstanding (in shares)						0
Common Stock
Class of Stock [Line Items]
Common stock, shares outstanding (in shares)	40,531,996					40,662,020	35,135,520	35,135,520
Number of shares sold in private placement offering (in shares)				97,099
Price per share (in dollars per share)			$ 4.00
Aggregate gross proceeds from closing of offering				$ 500
Private Placement
Class of Stock [Line Items]
Placement agent fees and closing expenses					$ 1,800
Private Placement | Common Stock
Class of Stock [Line Items]
Number of shares sold in private placement offering (in shares)	250,000	5,000,000			5,380,000
Price per share (in dollars per share)	$ 4.00	$ 3.00			$ 4.00
Aggregate gross proceeds from closing of offering	$ 1,000	$ 15,000			$ 21,500
Placement agent fees and closing expenses	$ 50	$ 1,400
Exercise price (in usd per share)		$ 3.30
Private Placement | Warrant
Class of Stock [Line Items]
Placement agent fees and closing expenses		$ 223
Number of common stock issuable from warrants (in shares)		150,000
Series 1 Preferred Stock
Class of Stock [Line Items]
Convertible preferred stock, shares issued (in shares)									51,680,254
Convertible preferred stock, shares outstanding (in shares)									51,680,254
Common stock, shares issued (in shares)			12,433,953
Common stock, shares outstanding (in shares)			12,433,953
Series 2 Preferred Stock
Class of Stock [Line Items]
Convertible preferred stock, shares issued (in shares)									38,760,190
Convertible preferred stock, shares outstanding (in shares)									38,760,190
Common stock, shares issued (in shares)			7,499,996
Common stock, shares outstanding (in shares)			7,499,996
Series 3 Preferred Stock
Class of Stock [Line Items]
Convertible preferred stock, shares issued (in shares)									31,850,304
Convertible preferred stock, shares outstanding (in shares)									31,850,304
Common stock, shares issued (in shares)			4,000,000
Common stock, shares outstanding (in shares)			4,000,000
Common Stock
Class of Stock [Line Items]
Shares redeemed (in shares)			52,733
Common stock, shares authorized (in shares)										750,000,000
Preferred Stock
Class of Stock [Line Items]
Preferred stock, shares authorized (in shares)						5,000,000				5,000,000