v3.26.1
Cover - shares
 3 Months Ended
Mar. 31, 2026
May 01, 2026
Document Information [Line Items]    
Document Type 10-Q/A  
Amendment Flag true  
Amendment Description The purpose of this Amendment No. 1 to our Annual Report on Form 10-Q for the three months ended March 31, 2026, originally filed with the Securities and Exchange Commission (the “SEC”) on May 6, 2026 (the “Original Report”), is to correct an inadvertent omission of certain language from paragraph 4 of Exhibit 31.1, Certification of the Principal Executive Officer, and Exhibit 31.2, Certification of the Principal Financial Officer filed with the Original Report. This Amendment No. 1 contains only the Cover Page, this Explanatory Note and Exhibits 31.1 and 31.2. No other changes have been made to the Original Report. This Amendment No. 1 does not reflect subsequent events occurring after the original filing date of the Original Report or modify or update in any way disclosures made in the Original Report. Accordingly, this Amendment No. 1 should be read in conjunction with the Original Report and our other filings with the SEC.  
Document Quarterly Report true  
Document Period End Date Mar. 31, 2026  
Document Transition Report false  
Entity File Number 001-42477  
Entity Registrant Name Flowco Holdings Inc.  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 99-4382473  
Entity Address, Address Line One 1300 Post Oak Blvd.  
Entity Address, Address Line Two Suite 450  
Entity Address, City or Town Houston  
Entity Address, State or Province TX  
Entity Address, Postal Zip Code 77056  
City Area Code 713  
Local Phone Number 997-4877  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Non-accelerated Filer  
Entity Small Business false  
Entity Emerging Growth Company true  
Entity Ex Transition Period false  
Entity Shell Company false  
Entity Central Index Key 0002035149  
Document Fiscal Year Focus 2026  
Document Fiscal Period Focus Q1  
Current Fiscal Year End Date --12-31  
Class A Common Stock    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   41,824,162
Class B Common Stock    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   48,521,254
New York Stock Exchange    
Document Information [Line Items]    
Title of 12(b) Security Class A common stock, par value $0.0001 per share  
Trading Symbol FLOC  
Security Exchange Name NYSE  
NYSE Texas, Inc.    
Document Information [Line Items]    
Title of 12(b) Security Class A common stock, par value $0.0001 per share  
Trading Symbol FLOC  
Security Exchange Name NYSETX