Quarterly report pursuant to Section 13 or 15(d)

Convertible Notes Payable - Additional Information (Detail)

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Convertible Notes Payable - Additional Information (Detail)
 1 Months Ended 3 Months Ended
Mar. 31, 2017
USD ($)
$ / shares
shares
Mar. 31, 2017
USD ($)
$ / shares
shares
Debt Instrument [Line Items]    
Change in fair value of warrants   $ 3,118,000
Note Purchase Agreement [Member]    
Debt Instrument [Line Items]    
Line of credit maximum borrowing capacity $ 45,000,000 45,000,000
Initial installment under line of credit   $ 2,000,000
Common stock issued | shares   120,000
VLOC, LLC [Member] | Note Purchase Agreement [Member]    
Debt Instrument [Line Items]    
Common stock issued | shares   120,000
Additional common stock issued | shares 45,000 45,000
Warrants to purchase common stock | shares 60,000 60,000
Fully diluted shares outstanding percentage 0.375% 0.375%
Warrants maturity period 10 years  
VLOC, LLC [Member] | Note Purchase Agreement [Member] | Chad Steelberg and Ryan Steelberg [Member]    
Debt Instrument [Line Items]    
Ownership percentage 50.00%  
Maximum [Member] | VLOC, LLC [Member] | Note Purchase Agreement [Member]    
Debt Instrument [Line Items]    
Warrant exercise price | $ / shares $ 13.6088 $ 13.6088
Acacia [Member] | Convertible Notes Payable [Member]    
Debt Instrument [Line Items]    
Convertible note payable, public offering gross proceeds for automatic conversion $ 15,000,000  
Acacia [Member] | VLOC, LLC [Member] | Note Purchase Agreement [Member]    
Debt Instrument [Line Items]    
Line of credit, interest rate 8.00%  
Accrued interest $ 5,000 $ 5,000
Line of credit, tranche amount $ 2,000,000 $ 2,000,000
Line of credit, maturity date Nov. 25, 2017  
Line of credit, borrowing description   The Company drew down the initial $2,000 installment under the Bridge Loan upon the execution of the Note Purchase Agreement, and the remaining amounts could be drawn down in tranches of $2,000 per month commencing April 15, 2017; provided, however, that if the Company's IPO was not completed by April 30, 2017, the Lenders could, but were not obligated to, continue making advances under the Bridge Loan after that date.
Acacia [Member] | VLOC, LLC [Member] | Note Purchase Agreement [Member] | Bridge Loan [Member]    
Debt Instrument [Line Items]    
Line of credit maximum borrowing capacity $ 8,000,000 $ 8,000,000
Initial installment under line of credit 2,000,000  
Acacia [Member] | Primary Warrant [Member] | Convertible Notes Payable [Member]    
Debt Instrument [Line Items]    
Change in fair value of warrants $ 3,118,000  
Acacia [Member] | Maximum [Member] | Convertible Notes Payable [Member]    
Debt Instrument [Line Items]    
Warrant exercise price | $ / shares $ 13.6088 $ 13.6088
Acacia [Member] | Maximum [Member] | VLOC, LLC [Member] | Note Purchase Agreement [Member]    
Debt Instrument [Line Items]    
Conversion price per share | $ / shares $ 13.6088 $ 13.6088