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Summary of Significant Accounting Policies (Details 2) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Sep. 30, 2015
Sep. 30, 2014
Dec. 31, 2014
Property and Equipment          
Gross Property and Equipment $ 5,937,000   $ 5,937,000   $ 5,992,000
Accumulated depreciation and amortization (4,817,000)   (4,817,000)   (4,525,000)
Net Property and Equipment 1,120,000   1,120,000   1,467,000
Depreciation expense 160,000 $ 159,000 482,000 $ 471,000  
Production tooling, machinery and equipment          
Property and Equipment          
Gross Property and Equipment 3,805,000   3,805,000   3,976,000
Office furniture and fixtures          
Property and Equipment          
Gross Property and Equipment 260,000   260,000   260,000
Computer equipment and software          
Property and Equipment          
Gross Property and Equipment 1,149,000   1,149,000   1,065,000
Web site          
Property and Equipment          
Gross Property and Equipment 40,000   40,000   40,000
Leasehold improvements          
Property and Equipment          
Gross Property and Equipment 616,000   616,000   616,000
Construction in-progress          
Property and Equipment          
Gross Property and Equipment $ 67,000   $ 67,000   $ 35,000