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Summary of Significant Accounting Policies (Details 1) - USD ($)	Sep. 30, 2018	Dec. 31, 2017
Property, Plant and Equipment [Line Items]
Gross property and equipment	$ 8,714,000	$ 7,791,000
Accumulated depreciation and amortization	(5,665,000)	(5,121,000)
Net property and equipment	3,049,000	2,670,000
Production tooling, machinery and equipment [Member]
Property, Plant and Equipment [Line Items]
Gross property and equipment	4,087,000	4,003,000
Office furniture and fixtures [Member]
Property, Plant and Equipment [Line Items]
Gross property and equipment	329,000	325,000
Computer equipment and software [Member]
Property, Plant and Equipment [Line Items]
Gross property and equipment	2,726,000	2,680,000
Leasehold improvements [Member]
Property, Plant and Equipment [Line Items]
Gross property and equipment	577,000	577,000
Construction in-progress [Member]
Property, Plant and Equipment [Line Items]
Gross property and equipment	$ 995,000	$ 206,000

X

- Definition

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

+ References

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-SubTopic 10
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