Financings - Additional Information (Details) - USD ($)			1 Months Ended	9 Months Ended
	Mar. 10, 2020	Feb. 05, 2020	Jun. 30, 2019	Sep. 30, 2021	Sep. 30, 2020	Aug. 06, 2021
Class of Stock [Line Items]
Sale of stock consideration received on transaction				$ 0	$ 88,661,000
Issuance of common stock in connection with at the market offering, net					$ 13,015,000
Term Loan [Member]
Class of Stock [Line Items]
Description of payment terms				Agreement with principal repayments for the Term Loan Agreement starting on September 1, 2023 and a maturity date of August 1, 2025.
Initial term loan						$ 25,000,000.0
Additonal tranche facility						$ 25,000,000.0
At The Market Offering [Member]
Class of Stock [Line Items]
Stock issued during period				0	2,814,673
Sale of stock consideration received on transaction					$ 13,000,000.0
par value per share					$ 4.77
At The Market Offering [Member] | Maximum [Member]
Class of Stock [Line Items]
Issuance of common stock in connection with at the market offering, net			$ 100,000,000.0
Underwriting Agreement [Member]
Class of Stock [Line Items]
Stock issued during period		27,826,086
Issuance & sale of common stock in public offering price per share		$ 3.25
Sale of stock consideration received on transaction		$ 84,800,000
par value per share		$ 3.055
Underwriting Agreement [Member] | Stock Option [Member]
Class of Stock [Line Items]
Stock issued during period	1,284,025
Sale of stock consideration received on transaction	$ 3,900,000