Cover - shares	3 Months Ended
Cover - shares	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

Flowco Holdings Inc. 10-Q/A