Document and Entity Information - shares
9 Months Ended
Sep. 30, 2019
Nov. 01, 2019
Cover [Abstract]    
Entity Central Index Key 0001682745  
Document Type 10-Q  
Document Period End Date Sep. 30, 2019  
Amendment Flag false  
Current Fiscal Year End Date --12-31  
Entity Filer Category Accelerated Filer  
Entity Current Reporting Status Yes  
Entity File Number 001-37979  
Entity Tax Identification Number 81-3563824  
Entity Address, Address Line One 1150 North Alma School Road  
Entity Address, City or Town Mesa  
Entity Address, State or Province AZ  
Entity Address, Postal Zip Code 85201  
City Area Code 480  
Local Phone Number 443-7000  
Entity Shell Company false  
Entity Small Business false  
Entity Emerging Growth Company true  
Entity Ex Transition Period false  
Document Fiscal Year Focus 2019  
Document Fiscal Period Focus Q3  
Trading Symbol VRRM  
Entity Common Stock, Shares Outstanding   159,150,055
Entity Interactive Data Current Yes  
Title of 12(b) Security Class A common stock, par value $0.0001 per share  
Security Exchange Name NASDAQ  
Entity Incorporation, State or Country Code DE  
Document Quarterly Report true  
Document Transition Report false