v3.26.1
Document and Entity Information - shares
 6 Months Ended
Jun. 30, 2026
Jul. 31, 2026
Document and Entity Information    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Jun. 30, 2026  
Document Transition Report false  
Securities Act File Number 001-34145  
Entity Registrant Name Primoris Services Corporation  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 20-4743916  
Entity Address, Address Line One 2300 N. Field Street, Suite 1900  
Entity Address, City or Town Dallas  
Entity Address, State or Province TX  
Entity Address, Postal Zip Code 75201  
City Area Code 214  
Local Phone Number 740-5600  
Title of 12(b) Security Common Stock, $0.0001 par value  
Trading Symbol PRIM  
Security Exchange Name NYSE  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Large Accelerated Filer  
Entity Small Business false  
Entity Emerging Growth Company false  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   53,832,327
Entity Central Index Key 0001361538  
Current Fiscal Year End Date --12-31  
Document Fiscal Year Focus 2026  
Document Fiscal Period Focus Q2  
Amendment Flag false