Cover - shares	3 Months Ended
	Mar. 30, 2024	May 02, 2024
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 30, 2024
Document Transition Report	false
Entity File Number	001-38950
Entity Registrant Name	Grocery Outlet Holding Corp.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	47-1874201
Entity Address, Address Line One	5650 Hollis Street
Entity Address, City or Town	Emeryville
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	94608
City Area Code	510
Local Phone Number	845-1999
Title of 12(b) Security	Common Stock, par value $0.001 per share
Trading Symbol	GO
Security Exchange Name	NASDAQ
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		99,861,691
Entity Central Index Key	0001771515
Current Fiscal Year End Date	--12-28
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	Q1
Amendment Flag	false