Nature of the Business - Additional Information (Details) - USD ($)			1 Months Ended	3 Months Ended		8 Months Ended	14 Months Ended
	Aug. 05, 2021	May 22, 2020	May 31, 2020	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2022	Aug. 04, 2021	Dec. 31, 2021
Class of Stock [Line Items]
Common stock, issued (in shares)				54,347,564		54,347,564		45,958,776
Accumulated deficit				$ 134,544,000		$ 134,544,000		$ 140,743,000
Operating expenses and capital expenditure requirements (in months)				12 months
2020 ATM Facility
Class of Stock [Line Items]
Common stock, issued (in shares)					1,677,118
Net proceeds from issuance of common stock					$ 14,716,000		$ 19,479,000
Common stock, issued (in shares)	2,303,545
2020 ATM Facility | Maximum
Class of Stock [Line Items]
Gross proceeds from issuance of common stock		$ 50,000,000	$ 50,000,000
Percentage of gross proceeds of shares sold for compensation (as a percent)		3.00%
2020 Amended Sales Agreement
Class of Stock [Line Items]
Common stock, issued (in shares)				7,337,251
Net proceeds from issuance of common stock				$ 20,556,000
Number of shares issued (in shares)				7,337,251
2020 Amended Sales Agreement | Maximum
Class of Stock [Line Items]
Gross proceeds from issuance of common stock	$ 80,000,000
2021 ATM Facility
Class of Stock [Line Items]
Common stock, issued (in shares)						8,770,878
Net proceeds from issuance of common stock						$ 30,602,000
Number of shares issued (in shares)						8,770,878
2021 ATM Facility | Maximum
Class of Stock [Line Items]
Gross proceeds from issuance of common stock	$ 80,000,000
Percentage of gross proceeds of shares sold for compensation (as a percent)	3.00%