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 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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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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- Definition

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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Property, Plant and Equipment - Additional Information (Details) - USD ($)	3 Months Ended		15 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2023	Dec. 31, 2022
Property, Plant and Equipment
Depreciation and amortization expense	$ 306,000	$ 313,000
Depreciation	298,000	$ 305,000
Amortization expense			$ 8,000
Property, plant and equipment, Gross	34,132,000		34,132,000	$ 33,694,000
Machinery and equipment
Property, Plant and Equipment
ROU assets	178,000		178,000	185,000
Property, plant and equipment, Gross	21,216,000		21,216,000	20,757,000
Construction in progress
Property, Plant and Equipment
Property, plant and equipment, Gross	1,023,000		1,023,000	$ 1,087,000
Construction In Progress Machinery And Equipment [Member]
Property, Plant and Equipment
Property, plant and equipment, Gross	384,000		384,000
Construction InProgress Building Improvement [Member]
Property, Plant and Equipment
Property, plant and equipment, Gross	$ 639,000		$ 639,000