XML 12 R1.htm IDEA: XBRL DOCUMENT v3.25.3
Cover Page - shares
 9 Months Ended
Sep. 30, 2025
Nov. 10, 2025
Cover [Abstract]    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Sep. 30, 2025  
Document Transition Report false  
Entity File Number 001-37756  
Entity Registrant Name Global Water Resources, Inc.  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 90-0632193  
Entity Address, Address Line One 21410 N. 19th Avenue #220  
Entity Address, City or Town Phoenix,  
Entity Address, State or Province AZ  
Entity Address, Postal Zip Code 85027  
City Area Code 480  
Local Phone Number 360-7775  
Title of 12(b) Security Common Stock, par value $0.01 per share  
Trading Symbol GWRS  
Security Exchange Name NASDAQ  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Non-accelerated Filer  
Entity Small Business true  
Entity Emerging Growth Company false  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   28,750,265
Amendment Flag false  
Document Fiscal Year Focus 2025  
Current Fiscal Year End Date --12-31  
Document Fiscal Period Focus Q3  
Central Index Key 0001434728