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Summary of Significant Accounting Policies (Details 1) - USD ($)	Mar. 31, 2018	Dec. 31, 2017
Property, Plant and Equipment [Line Items]
Gross property and equipment	$ 8,040,000	$ 7,791,000
Accumulated depreciation and amortization	(5,307,000)	(5,121,000)
Net property and equipment	2,733,000	2,670,000
Production tooling, machinery and equipment [Member]
Property, Plant and Equipment [Line Items]
Gross property and equipment	4,003,000	4,003,000
Office furniture and fixtures [Member]
Property, Plant and Equipment [Line Items]
Gross property and equipment	325,000	325,000
Computer equipment and software [Member]
Property, Plant and Equipment [Line Items]
Gross property and equipment	2,687,000	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	$ 448,000	$ 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

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.14)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229

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-Name Accounting Standards Codification
-Topic 210
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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(13))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
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-Topic 210
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-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
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-Section S99
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