Property and Equipment (Details) - USD ($)	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017
Total Property and Equipment	$ 31,389,000	$ 29,993,000
Less: Accumulated Depreciation	(22,612,000)	(19,943,000)
Property and Equipment, net	8,777,000	10,050,000
Land [Member]
Total Property and Equipment	300,000	300,000
Buildings and Improvements [Member]
Total Property and Equipment	$ 1,708,000	1,650,000
Property and Equipment Useful Life	31 years 6 months
Machinery and Equipment [Member]
Total Property and Equipment	$ 11,579,000	11,554,000
Capital Lease Machinery and Equipment [Member]
Total Property and Equipment	6,495,000	6,534,000
Tools and Instruments [Member]
Total Property and Equipment	9,882,000	8,538,000
Automotive Equipment [Member]
Total Property and Equipment	$ 177,000	172,000
Property and Equipment Useful Life	5 years
Furniture and Fixtures [Member]
Total Property and Equipment	$ 303,000	311,000
Leasehold Improvements [Member]
Total Property and Equipment	$ 520,000	528,000
Property and Equipment Useful Life, description	Term of Lease
Computers and Software [Member]
Total Property and Equipment	$ 425,000	$ 406,000
Minimum [Member] \| Machinery and Equipment [Member]
Property and Equipment Useful Life	5 years
Minimum [Member] \| Capital Lease Machinery and Equipment [Member]
Property and Equipment Useful Life	5 years
Minimum [Member] \| Tools and Instruments [Member]
Property and Equipment Useful Life	1 year 6 months
Minimum [Member] \| Furniture and Fixtures [Member]
Property and Equipment Useful Life	5 years
Minimum [Member] \| Computers and Software [Member]
Property and Equipment Useful Life	4 years
Maximum [Member] \| Machinery and Equipment [Member]
Property and Equipment Useful Life	8 years
Maximum [Member] \| Capital Lease Machinery and Equipment [Member]
Property and Equipment Useful Life	8 years
Maximum [Member] \| Tools and Instruments [Member]
Property and Equipment Useful Life	7 years
Maximum [Member] \| Furniture and Fixtures [Member]
Property and Equipment Useful Life	8 years
Maximum [Member] \| Computers and Software [Member]
Property and Equipment Useful Life	6 years

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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Describes the periods of time over which an entity anticipates to receive utility from its property, plant and equipment (that is, the periods of time over which an entity allocates the initial cost of its property, plant and equipment).

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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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Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services 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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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

+ References

No definition available.

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