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Property and Equipment (Details) - USD ($)	Dec. 31, 2020	Dec. 31, 2019
Total Property and Equipment	$ 37,644,000	$ 33,139,000
Less: Accumulated Depreciation	(28,063,000)	(25,561,000)
Property and Equipment, net	9,581,000	7,578,000
Land [Member]
Total Property and Equipment	300,000	300,000
Buildings and Improvements [Member]
Total Property and Equipment	1,683,000	1,650,000
Machinery and Equipment [Member]
Total Property and Equipment	21,686,000	18,450,000
Finance Lease Machinery and Equipment [Member]
Total Property and Equipment	78,000	296,000
Tools and Instruments [Member]
Total Property and Equipment	12,116,000	11,021,000
Automotive Equipment [Member]
Total Property and Equipment	200,000	177,000
Furniture and Fixtures [Member]
Total Property and Equipment	290,000	290,000
Leasehold Improvements [Member]
Total Property and Equipment	855,000	530,000
Computers and Software [Member]
Total Property and Equipment	$ 436,000	$ 425,000

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- Definition

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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