v3.26.1
Document And Entity Information
May 28, 2026
Document Information [Line Items]  
Entity, Registrant Name IDT CORPORATION
Document, Type 8-K
Document, Period End Date May 28, 2026
Entity, Incorporation, State or Country Code DE
Entity, File Number 1-16371
Entity, Tax Identification Number 22-3415036
Entity, Address, Address Line One 520 Broad Street
Entity, Address, City or Town Newark
Entity, Address, State or Province NJ
Entity, Address, Postal Zip Code 07102
City Area Code 973
Local Phone Number 438-1000
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Title of 12(b) Security Class B common stock
Trading Symbol IDT
Security Exchange Name NYSE
Entity, Emerging Growth Company false
Amendment Flag false
Entity, Central Index Key 0001005731