Debt instrument additional advance prepayments percentage.

No definition available.

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- Definition

Debt Instrument prepayment charges.

+ References

No definition available.

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- Definition

Debt instruments prepayment percentage.

+ References

No definition available.

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- Definition

Notes payable interest only period.

+ References

No definition available.

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- Definition

Notes payable principal payments equal monthly installments.

+ References

No definition available.

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- Definition

Percentage of prepayment amount during first year following closing date.

+ References

No definition available.

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- Definition

Percentage of prepayment amount during second year following closing date.

+ References

No definition available.

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- Definition

Percentage of prepayment amount during third year following closing date.

+ References

No definition available.

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- Definition

Proceeds from issuance of long term debt gross.

+ References

No definition available.

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- Definition

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

+ References

No definition available.

+ Details

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- Definition

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.

+ References

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- Definition

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

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- Definition

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.

+ References

No definition available.

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- Definition

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

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- Definition

Description of the frequency of the required periodic payments of interest, principal, or both, and the amount, if set, or a description of a formula upon which payment is based.

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- Definition

The effective interest rate during the reporting period.

+ References

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

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Notes Payable - Additional Information (Detail)		12 Months Ended
Notes Payable - Additional Information (Detail)	Oct. 29, 2019 USD ($)	Dec. 31, 2021 USD ($) Installment	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
Debt Instrument [Line Items]
Interest expense		$ 2,910,000	$ 2,924,000	$ 502,000
Loan and Security Agreement [Member]
Debt Instrument [Line Items]
Interest expense		$ 2,910,000	$ 2,899,000
Loan and Security Agreement [Member] \| Original Credit Facility [Member]
Debt Instrument [Line Items]
Credit facility, interest rate	9.65%
Credit facility, payment terms		Following an interest-only period of 24 months, principal payments are due in 24 equal monthly installments commencing December 1, 2021 and ending November 1, 2023
Notes payable interest-only period		24 months
Notes payable principal payments equal monthly installments \| Installment		24
Percentage of prepayment amount during first year	3.00%
Percentage of prepayment amount during second year	2.00%
Percentage of prepayment amount during third year	1.00%
Prepayment or repayment percentage	4.85%
Additional advance prepayment or repayment percentage	4.85%
Carrying value of debt		$ 24,643,000
Loan and Security Agreement [Member] \| Original Credit Facility [Member] \| Prime Rate [Member]
Debt Instrument [Line Items]
Debt instrument, variable rate	4.40%
Hercules Capital, Inc. [Member] \| Loan and Security Agreement [Member] \| Original Credit Facility [Member]
Debt Instrument [Line Items]
Credit facility, aggregate principal amount	$ 50,000,000
First Tranche [Member] \| Loan and Security Agreement [Member] \| Original Credit Facility [Member]
Debt Instrument [Line Items]
Prepayment or repayment charge	1,213,000
Carrying value of debt	$ 24,575,000
Debt instrument, interest rate effective percentage	11.47%
First Tranche [Member] \| Hercules Capital, Inc. [Member] \| Loan and Security Agreement [Member] \| Original Credit Facility [Member]
Debt Instrument [Line Items]
Gross proceeds from debt	$ 25,000,000
Second Tranche Unavailable to Borrow Due to Not Met Milestone Requirements [Member] \| Hercules Capital, Inc. [Member] \| Loan and Security Agreement [Member] \| Original Credit Facility [Member]
Debt Instrument [Line Items]
Credit facility, aggregate principal amount	12,500,000
Third Tranche Available Upon Approval on or Prior to June 30, 2021 [Member] \| Hercules Capital, Inc. [Member] \| Loan and Security Agreement [Member] \| Original Credit Facility [Member]
Debt Instrument [Line Items]
Credit facility, aggregate principal amount	$ 12,500,000