Commitments and Contingencies - Summary of Quantitative Information Associated with Amounts Recognized in Condensed Consolidated Financial Statements for Lease (Detail) - USD ($) $ in Thousands		12 Months Ended
Mar. 01, 2018	Dec. 31, 2021	Dec. 31, 2020
Commitments And Contingencies Disclosure [Abstract]
Operating lease cost		$ 664	$ 664
Variable lease cost		38	51
Total operating lease expense		702	715
Total lease payments	$ 7,300	$ 517	$ 507
Remaining Lease term (years)		7 years 7 months 2 days	8 years 7 months 2 days
Discount rate		15.00%	15.00%

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Amount of lease cost recognized by lessee for lease contract.

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- Definition

Amount of single lease cost, calculated by allocation of remaining cost of lease over remaining lease term. Includes, but is not limited to, single lease cost, after impairment of right-of-use asset, calculated by amortization of remaining right-of-use asset and accretion of lease liability.

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Amount of cash outflow from operating lease, excluding payments to bring another asset to condition and location necessary for its intended use.

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Weighted average discount rate for operating lease calculated at point in time.

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Weighted average remaining lease term for operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Amount of variable lease cost, excluded from lease liability, recognized when obligation for payment is incurred for finance and operating leases.

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