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Revenue Recognition and Contracts with Customers (Company’s total revenue was comprised of four major product lines) (Detail) - USD ($)
3 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Sales Revenue Net $ 1,543,895 $ 1,210,663
Smart Glasses and Video Eyewear Sales [Member]    
Sales Revenue Net 1,212,771 959,383
OEM Product Sales [Member]    
Sales Revenue Net 114,170 0
Waveguide Sales [Member]    
Sales Revenue Net 36,438 0
Engineering Services [Member]    
Sales Revenue Net $ 180,516 $ 251,280