v3.23.1
Document And Entity Information
Jun. 02, 2023
Cover [Abstract]  
Document Type 8-K
Amendment Flag false
Document Period End Date Jun. 02, 2023
Entity Registrant Name GTJ REIT, INC.
Entity Central Index Key 0001368757
Entity Emerging Growth Company false
Securities Act File Number 333-136110
Entity Incorporation, State or Country Code MD
Entity Tax Identification Number 20-5188065
Entity Address, Address Line One 1399 Franklin Avenue
Entity Address, Address Line Two Suite 100
Entity Address, City or Town Garden City
Entity Address, State or Province NY
Entity Address, Postal Zip Code 11530
City Area Code (516)
Local Phone Number 693-5500
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Title of 12(b) Security N/A
No Trading Symbol Flag true
Security Exchange Name NONE