Capital Stock - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands							3 Months Ended			6 Months Ended		12 Months Ended
	Jun. 30, 2021	Jan. 21, 2021	Dec. 10, 2020	Dec. 06, 2020	Oct. 21, 2020	Oct. 01, 2019	Jun. 30, 2021	Mar. 31, 2021	Mar. 31, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020	Dec. 31, 2019
Class of Stock [Line Items]
Conversion of convertible preferred stock, shares (in shares)						1,315,790
Issuance of stock for services							$ 116	$ 274
Exercised												$ 0.01
Issuance of common shares from warrant exercise (in shares)					521,500
Warrant term					2 years
Exercise price (in dollars per share)	$ 4.42						$ 4.42			$ 4.42		$ 4.85	$ 0.01
Warrant exercises	0						0			0
Issuance costs	$ 896
Proceeds from stock issuance, net of issuance costs	$ 11,504									$ 11,504	$ 0
Public Offering
Class of Stock [Line Items]
Sale of stock, price per share (in dollars per share)	$ 4.00						$ 4.00			$ 4.00
General and administrative expense
Class of Stock [Line Items]
Accrued professional fees							$ 116			$ 390
Warrants
Class of Stock [Line Items]
Issuance of common shares from warrant exercise (in shares)				625,000
Warrant term				2 years
Exercise price (in dollars per share)				$ 5.49	$ 4.08
Warrants | Public Offering
Class of Stock [Line Items]
Number of shares issued (in shares)	1,000,000
Warrants | Private Placement
Class of Stock [Line Items]
Number of shares issued (in shares)	3,000,000
Sale of stock, price per share (in dollars per share)	$ 4.40						$ 4.40			$ 4.40
Common Stock
Class of Stock [Line Items]
Conversion of convertible preferred stock, shares (in shares)									50,000	18,846,411	50,000
Issuance of shares for professional service fees (in shares)		21,008	50,000					21,008
Issuance of stock for services		$ 100	$ 348
Common Stock | Public Offering
Class of Stock [Line Items]
Number of shares issued (in shares)	4,000,000
Sale of stock, price per share (in dollars per share)	$ 4.00						4.00			$ 4.00
Common Stock | Private Placement
Class of Stock [Line Items]
Proceeds from issuance of common stock gross	$ 12,400
Sale of stock, price per share (in dollars per share)	$ 4.40						$ 4.40			$ 4.40
Series A Warrants
Class of Stock [Line Items]
Warrant term	6 months						6 months			6 months
Series B Warrants
Class of Stock [Line Items]
Warrant term	3 years						3 years			3 years