Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2022	Apr. 28, 2022
Cover [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2022
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	Q1
Trading Symbol	GTY
Entity Registrant Name	GETTY REALTY CORP.
Entity Central Index Key	0001052752
Entity Current Reporting Status	Yes
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		46,732,973
Entity File Number	001-13777
Entity Tax Identification Number	11-3412575
Entity Address, Address Line One	292 Madison Avenue
Entity Address, Address Line Two	9th Floor
Entity Address, City or Town	New York
Entity Address, State or Province	NY
Entity Address, Postal Zip Code	10017-6318
City Area Code	646
Local Phone Number	349-6000
Entity Incorporation, State or Country Code	MD
Title of 12(b) Security	Common Stock
Security Exchange Name	NYSE
Document Quarterly Report	true
Document Transition Report	false
Entity Interactive Data Current	Yes