Class of warrant or rights period of warrants or rights exercisable.

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Debt instrument closure fee payment percentage.

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Debt instrument, redemption price prepayment fee, percentage of principal amount redeemed

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- Definition

Fair value of warrant at issuance.

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Exercise price per share or per unit of warrants or rights outstanding.

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Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares.

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Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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No definition available.

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Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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Description of reference rate used for variable rate of debt instrument.

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Face (par) amount of debt instrument at time of issuance.

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Amount of the fee that accompanies borrowing money under the debt instrument.

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Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Description of the interest rate as being fixed or variable, and, if variable, identification of the index or rate on which the interest rate is based and the number of points or percentage added to that index or rate to set the rate, and other pertinent information, such as frequency of rate resets.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Date when the debt instrument is scheduled to be fully repaid, in YYYY-MM-DD format.

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Amount of unused borrowing capacity under the long-term financing arrangement that is available to the entity as of the balance sheet date.

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Description of unused borrowing capacity under the debt instrument and conditions under which the commitment can be withdrawn by the lender.

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Amount of commitment fees for the unused borrowing capacity under the long-term financing arrangement that is available to the entity.

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Amount of the cost of borrowed funds accounted for as interest expense for debt.

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Value of input used to measure long-term debt.

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Period between issuance and maturity of long-term debt, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Oxford Finance Loan Agreement - Additional Information (Details)			12 Months Ended
	Dec. 23, 2020 USD ($) $ / shares shares	Feb. 12, 2020 USD ($) $ / shares shares	Dec. 31, 2021 USD ($) shares	Dec. 31, 2020 shares	Dec. 31, 2019 shares
Debt Instrument [Line Items]
Warrants to purchase common stock \| shares			2,117,094	2,117,094	2,118,094
Loan Agreement
Debt Instrument [Line Items]
Term loan, aggregate principal amount		$ 60,000,000.0
Additional term loan advances, description			A $20.0 million term loan (first tranche) was funded on February 12, 2020, and another $20.0 million term loan (second tranche) was funded on December 23, 2020. As of December 31, 2021, the final $20.0 million tranche remained available under the Loan Agreement, at the sole discretion of the Lender
Term loan, interest rate terms			The term loan bears interest at an annual rate equal to the greater of (i) 7.75% and (ii) the sum of 5.98% and the greater of (A) one-month LIBOR or (B) 1.77%.
Term loan, interest rate		7.75%
Term loan, effective interest rate		5.98%
Term loan, variable interest rate basis			one-month LIBOR
Term loan, variable interest rate basis spread		1.77%
Term loan, maturity date		Feb. 01, 2025
Term loan, final payment fee percentage		5.00%
Warrant exercisable period from date of issuance			5 years
Interest expense			$ 3,900,000
Loan Agreement \| Advance Prepaid in First 12 Months
Debt Instrument [Line Items]
Term loan, prepayment fee, equal to percentage of the principal amount being prepaid		2.00%
Loan Agreement \| Advance Prepaid After 12 Months But Prior to 24 Months
Debt Instrument [Line Items]
Term loan, prepayment fee, equal to percentage of the principal amount being prepaid		1.00%
Loan Agreement \| Advance Prepaid After 24 Months But Prior to Maturity Date
Debt Instrument [Line Items]
Term loan, prepayment fee, equal to percentage of the principal amount being prepaid		0.50%
Loan Agreement \| First Loan Tranche
Debt Instrument [Line Items]
Term loan		$ 20,000,000.0
Term Loan, facilities fee		$ 100,000
Warrants to purchase common stock \| shares		27,548
Warrant exercise price of common stock per share \| $ / shares		$ 7.26
Fair value of warrants		$ 100,000
Loan Agreement \| First Loan Tranche \| Expected volatility \| Weighted Average
Debt Instrument [Line Items]
Fair value of weighted average volatility		75.43
Loan Agreement \| First Loan Tranche \| Expected life (in years) \| Weighted Average
Debt Instrument [Line Items]
Fair value of weighted expected term		5 years
Loan Agreement \| Second Loan Tranche
Debt Instrument [Line Items]
Term loan	$ 20,000,000.0
Term Loan, facilities fee	$ 75,000
Warrants to purchase common stock \| shares	17,389
Warrant exercise price of common stock per share \| $ / shares	$ 11.50
Fair value of warrants	$ 200,000
Loan Agreement \| Second Loan Tranche \| Expected volatility \| Weighted Average
Debt Instrument [Line Items]
Fair value of weighted average volatility	82.41
Loan Agreement \| Second Loan Tranche \| Expected life (in years) \| Weighted Average
Debt Instrument [Line Items]
Fair value of weighted expected term	5 years
Loan Agreement \| Final Loan Tranche
Debt Instrument [Line Items]
Each of available additional term loan advances			$ 20,000,000.0
Loan Agreement \| Third Loan Tranche
Debt Instrument [Line Items]
Term loan, facilities fee		$ 50,000