v3.19.1
Document and Entity Information - shares
3 Months Ended
Mar. 31, 2019
May 03, 2019
Document And Entity Information [Abstract]    
Entity Registrant Name VERRA MOBILITY CORP  
Entity Central Index Key 0001682745  
Document Type 10-Q  
Document Period End Date Mar. 31, 2019  
Amendment Flag false  
Current Fiscal Year End Date --12-31  
Entity Filer Category Accelerated Filer  
Entity Small Business false  
Entity Emerging Growth Company true  
Entity Ex Transition Period false  
Document Fiscal Year Focus 2019  
Document Fiscal Period Focus Q1  
Trading Symbol VRRM  
Entity Common Stock, Shares Outstanding   158,556,642