Leases - Schedule of Leases (Detail) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Assets
Operating lease assets	$ 695		$ 792
Total leased assets	695		792
Liabilities
Current - Operating	801		852
Noncurrent - Operating	21		155
Total leased liabilities	822		$ 1,007
Lease Cost
Net lease cost	$ 147	$ 86
Lease Term and Discount Rate
Weighted-average remaining lease term (years)	1 year 1 month 6 days		2 years 3 months 18 days
Weighted-average discount rate	6.70%		6.00%
SG&A and R&D Expenses [Member]
Lease Cost
Operating lease cost	$ 265	191
Sublease income	(121)	(108)
SG&A Expenses [Member]
Lease Cost
Short term lease cost	$ 3	$ 3

Operating lease assets.

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Operating lease assets.

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Operating lease liabilities.

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Operating lease term and discount rate.

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Short term lease cost and cost (reclassifications).

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- Definition

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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Present value of lessee's discounted obligation for lease payments from operating lease.

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Present value of lessee's discounted obligation for lease payments from operating lease, classified as current.

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Present value of lessee's discounted obligation for lease payments from operating lease, classified as noncurrent.

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Amount of lessee's right to use underlying asset under operating lease.

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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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- Definition

Amount of sublease income excluding finance and operating lease expense.

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