v3.19.1
Intangible Assets - Additional Information (Detail) - USD ($)
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Acquired Finite Lived Intangible Assets [Line Items]    
Amortization expense $ 63,000 $ 63,000
Definite-lived intangible assets, amortization expense, remainder of 2019 252,000  
Definite-lived intangible assets, amortization expense, 2020 252,000  
Definite-lived intangible assets, amortization expense, 2021 236,000  
Definite-lived intangible assets, amortization expense, 2022 $ 143,000  
OneClick [Member] | Tradenames [Member]    
Acquired Finite Lived Intangible Assets [Line Items]    
Amortization period 60 months  
OneClick [Member] | Covenants Not To Compete [Member]    
Acquired Finite Lived Intangible Assets [Line Items]    
Amortization period 48 months