The aggregate amount of recurring noncash expense charged against earnings in the period to allocate the cost of assets over their estimated remaining economic lives.

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The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets.

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

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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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Property, Plant and Equipment - Additional Information (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Property, Plant and Equipment
Depreciation and amortization expense	$ 272,000	$ 230,000	$ 790,000	$ 751,000
Amortization expense	6,000	$ 6,000	18,000	$ 18,000
Property, plant and equipment, Gross	23,973,000		23,973,000		$ 23,366,000
Machinery and equipment
Property, Plant and Equipment
ROU assets	166,000		166,000		185,000
Property, plant and equipment, Gross	15,305,000		15,305,000		14,526,000
Construction in progress
Property, Plant and Equipment
Property, plant and equipment, Gross	257,000		257,000		$ 1,002,000
Construction in progress (CIP) machinery & equipment
Property, Plant and Equipment
Property, plant and equipment, Gross	248,000		248,000
Construction in progress (CIP) building improvements
Property, Plant and Equipment
Property, plant and equipment, Gross	$ 9,000		$ 9,000