v3.19.1
Acquisition of OneClick - Summary of Unaudited Pro Forma Condensed Combined Statement of Operations (Paranthetical) (Detail) - USD ($)
9 Months Ended 12 Months Ended
Sep. 30, 2017
Dec. 31, 2018
Dec. 31, 2017
Business Acquisition [Line Items]      
Cost of sales   $ 19,128,000 $ 12,235,000
Effect of Change [Member]      
Business Acquisition [Line Items]      
Cost of sales $ 904,000   $ 904,000
Operating expenses $ (904,000)