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Acquisitions (Unaudited) - Summary of Unaudited Proforma Results of Operation (Detail)
$ / shares in Units, $ in Thousands
12 Months Ended
Dec. 31, 2018
USD ($)
$ / shares
Business Acquisition Pro Forma Information [Abstract]  
Revenues | $ $ 30,086
Net loss | $ $ (1,421)
Loss per share:  
Basic | $ / shares $ (0.08)
Diluted | $ / shares $ (0.08)