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Revenue Recognition and Contracts with Customers - Additional Information (Details) - USD ($)
9 Months Ended 12 Months Ended
Sep. 30, 2019
Dec. 31, 2018
Standard Product Warranty Term 12 months  
Revenue, Remaining Performance Obligation $ 215,000  
Revenue, Performance Obligation, Total Transaction Price 666,000  
Expects to Recognize Sales in Existing Remaining Performance Obligation 215,000  
Accrued Revenue, Current 145,882 $ 0
Extended Warranties [Member]    
Standard Product Warranty Term   12 months
Revenue, Remaining Performance Obligation $ 148,000  
Consumer Focused Products [Member]    
Standard Product Warranty Term 24 months  
OEM Product and Waveguide Sales [Member]    
Standard Product Warranty Term 18 months