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Property and Equipment, Net - Schedule of Property and Equipment, Net (Details) - USD ($)
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Property and equipment, gross $ 817,000 $ 807,000
Less: accumulated depreciation 765,000 737,000
Property and equipment, net $ 52,000 $ 70,000
Property and equipment, Life 3 years 7 years
Manufacturing Equipment [Member]    
Property and equipment, gross $ 700,000 $ 690,000
Manufacturing Equipment [Member] | Minimum [Member]    
Property and equipment, Life 3 years 3 years
Manufacturing Equipment [Member] | Maximum [Member]    
Property and equipment, Life 5 years 5 years
Research Equipment [Member]    
Property and equipment, gross $ 37,000 $ 37,000
Property and equipment, Life 5 years 5 years
Computer Equipment [Member]    
Property and equipment, gross $ 43,000 $ 43,000
Computer Equipment [Member] | Minimum [Member]    
Property and equipment, Life 3 years 3 years
Computer Equipment [Member] | Maximum [Member]    
Property and equipment, Life 4 years 4 years
Furniture and Fixtures [Member]    
Property and equipment, gross $ 37,000 $ 37,000
Property and equipment, Life 7 years 7 years