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Property and Equipment, Net - Additional Information (Detail) - USD ($)	1 Months Ended	3 Months Ended		9 Months Ended
	Oct. 31, 2023	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Property Plant And Equipment [Line Items]
Depreciation expense		$ 89,000	$ 77,000	$ 227,000	$ 354,000
Property and equipment, gross		3,270,000		3,270,000		$ 3,491,000
Gain on sale of property and equipment		11,000	0	36,000	386,000
Proceeds from sale of property and equipment		5,000	$ 5,000	42,000	$ 897,000
Property and equipment classified as assets held for sale, fair value		87,000		87,000		87,000
Subsequent Event [Member]
Property Plant And Equipment [Line Items]
Proceeds from sale of property and equipment	$ 65,000
Construction in Progress [Member]
Property Plant And Equipment [Line Items]
Property and equipment, gross		$ 0		$ 0		$ 10,000

X

- Definition

Fair value portion of assets classified as held for sale.

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-Topic 820
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The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

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Amount of gain (loss) on sale or disposal of property, plant and equipment assets, including oil and gas property and timber property.

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The cash inflow from the sale of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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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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