v3.26.1
Document and Entity Information - shares
 6 Months Ended
Jun. 30, 2026
Aug. 07, 2026
Document Information [Line Items]    
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Jun. 30, 2026  
Document Fiscal Year Focus 2026  
Document Fiscal Period Focus Q2  
Entity Registrant Name ERock, Inc.  
Entity Central Index Key 0002110029  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Current Fiscal Year End Date --12-31  
Entity Filer Category Non-accelerated Filer  
Entity Shell Company false  
Entity Small Business false  
Entity Emerging Growth Company true  
Entity Ex Transition Period false  
Title of 12(b) Security Class A common stock, par value $0.01 per share  
Trading Symbol EROC  
Security Exchange Name NYSE  
Entity File Number 001-43339  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 41-4189868  
Entity Address, Address Line One 1113 Vine St.  
Entity Address, Address Line Two Suite 101  
Entity Address, City or Town Houston  
Entity Address, State or Province TX  
Entity Address, Postal Zip Code 77002  
City Area Code 713  
Local Phone Number 429-4091  
Document Transition Report false  
Document Quarterly Report true  
Class A Common Stock    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   48,174,023
Class B Common Stock    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   171,226,057