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Property and Equipment (Tables)
12 Months Ended
Dec. 31, 2017
Property, Plant and Equipment [Abstract]  
Schedule of Property and Equipment
Year ended December 31   2017     2016  
Property and Equipment:            
Production tooling, machinery and equipment   $ 4,003,000     $ 4,000,000  
Office furniture and fixtures     325,000       322,000  
Computer equipment and software     2,680,000       1,301,000  
Leasehold improvements     577,000       577,000  
Construction in-progress     206,000       523,000  
      7,791,000       6,723,000  
Accumulated depreciation and amortization     (5,121,000 )     (4,293,000 )
Net Property and Equipment   $ 2,670,000     $ 2,430,000