v3.10.0.1
Document and Entity Information - shares
9 Months Ended
Sep. 30, 2018
Nov. 08, 2018
Entity Registrant Name VERRA MOBILITY CORP  
Entity Central Index Key 0001682745  
Document Type 10-Q  
Document Period End Date Sep. 30, 2018  
Amendment Flag false  
Current Fiscal Year End Date --12-31  
Entity Filer Category Non-accelerated Filer  
Entity Small Business false  
Entity Emerging Growth Company true  
Entity Ex Transition Period false  
Document Fiscal Year Focus 2018  
Document Fiscal Period Focus Q3  
Trading Symbol VRRM  
Class A    
Entity Common Stock, Shares Outstanding   156,056,642