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Subsequent Events - Additional Information (Detail) - USD ($)
1 Months Ended
Jul. 09, 2018
Nov. 30, 2017
Jun. 30, 2018
Dec. 31, 2017
Subsequent Event [Line Items]        
Common stock, par value     $ 0.0005 $ 0.0005
Warrant [Member]        
Subsequent Event [Line Items]        
Issuance of common shares upon exercise of warrants, shares   300,000    
Warrant [Member] | Red Violet, Inc. [Member] | Subsequent Event [Member] | Spin-off [Member]        
Subsequent Event [Line Items]        
Issuance of shares, net of offering costs, shares 40,000      
Sale of shares in private placement $ 200,000      
Whitehorse Warrants        
Subsequent Event [Line Items]        
Minimum share price to transfer common stock underlying warrants   $ 4.50    
Whitehorse Warrants | Subsequent Event [Member]        
Subsequent Event [Line Items]        
Minimum share price to transfer common stock underlying warrants $ 3.8334      
Whitehorse Warrants | Subsequent Event [Member] | Put Rights [Member]        
Subsequent Event [Line Items]        
Exercise price of warrants $ 3.8334      
Whitehorse Warrants | H.I.G. Whitehorse SMA ABF, L.P. [Member] | Subsequent Event [Member]        
Subsequent Event [Line Items]        
Warrant rights exercisable 46,667      
Common stock, par value $ 0.0005      
Exercise price of warrants $ 3.00      
Whitehorse Warrants | H.I.G. Whitehorse SMA Holdings I, LLC [Member] | Subsequent Event [Member]        
Subsequent Event [Line Items]        
Warrant rights exercisable 66,666      
Exercise price of warrants $ 3.00      
Whitehorse Warrants | Whitehorse Finance, Inc. [Member] | Subsequent Event [Member]        
Subsequent Event [Line Items]        
Warrant rights exercisable 186,667      
Exercise price of warrants $ 3.00