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Prepaid Expenses and Other Current Assets - Schedule of Prepaid Expenses and Other Current Assets (Detail) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Prepaid Expense and Other Assets [Abstract]
Prepaid research and development expenses	$ 1,146	$ 676
Prepaid insurance	553	944
Payroll tax receivable	323	208
Other prepaid expenses and other assets	293	279
Total prepaid expenses and other current assets	$ 2,315	$ 2,107

X

- Definition

Amount of asset related to consideration paid in advance for costs that provide economic benefits in future periods, and amount of other assets that are expected to be realized or consumed within one year or the normal operating cycle, if longer, not separately disclosed.

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- Definition

Carrying amount as of the balance sheet date of payroll taxes previously overpaid to tax authorities (such as U.S. Federal, state and local tax authorities) representing refunds of overpayments or recoveries based on agreed-upon resolutions of disputes.

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Amount of asset related to consideration paid in advance for costs related to research and development.

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Amount of asset related to consideration paid in advance for costs that provide economic benefits in future periods, and amount of other assets that are expected to be realized or consumed within one year or the normal operating cycle, if longer.

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Amount of asset related to consideration paid in advance for insurance that provides economic benefits within a future period of one year or the normal operating cycle, if longer.

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