{"cik":1005731,"taxonomy":"us-gaap","tag":"LongTermDebt","label":"Long-term Debt","description":"Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.","entityName":"IDT CORP","units":{"USD":[{"end":"2011-07-31","val":30175000,"accn":"0001193125-12-461999","fy":2012,"fp":"FY","form":"10-K/A","filed":"2012-11-09","frame":"CY2011Q2I"},{"end":"2012-07-31","val":30276000,"accn":"0001193125-12-461999","fy":2012,"fp":"FY","form":"10-K/A","filed":"2012-11-09"},{"end":"2012-07-31","val":30276000,"accn":"0001193125-13-399818","fy":2013,"fp":"FY","form":"10-K","filed":"2013-10-15","frame":"CY2012Q2I"},{"end":"2013-07-31","val":7159000,"accn":"0001193125-13-399818","fy":2013,"fp":"FY","form":"10-K","filed":"2013-10-15"},{"end":"2013-07-31","val":7159000,"accn":"0001213900-14-007233","fy":2014,"fp":"FY","form":"10-K","filed":"2014-10-14","frame":"CY2013Q2I"},{"end":"2014-07-31","val":6624000,"accn":"0001213900-14-007233","fy":2014,"fp":"FY","form":"10-K","filed":"2014-10-14","frame":"CY2014Q2I"},{"end":"2015-07-31","val":6353000,"accn":"0001213900-15-007660","fy":2015,"fp":"FY","form":"10-K","filed":"2015-10-14","frame":"CY2015Q2I"}]}}