Note 4 - Property, Plant and Equipment (Details Textual) - USD ($)	12 Months Ended
Dec. 31, 2024	Dec. 31, 2023
Depreciation, Depletion and Amortization	$ 990,000	$ 1,083,000
Depreciation	966,000	1,059,000
Amortization	24,000	24,000
Construction in Progress, Gross	216,000	106,000
Machinery and Equipment [Member]
Finance Lease, Right-of-Use Asset, after Accumulated Amortization	136,000	160,000
Construction in Progress, Gross	$ 180,000
Building Improvements [Member]
Construction in Progress, Gross		$ 36,000

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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- Definition

Amount of structure or a modification to a structure under construction. Includes recently completed structures or modifications to structures that have not been placed into service.

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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.

+ References

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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, after accumulated amortization, of right-of-use asset from finance lease.

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