Schedule of Revenues Disaggregated by Business Segment and Service Offered to Customers (Details) - USD ($) $ in Thousands	12 Months Ended
	Jul. 31, 2023	Jul. 31, 2022	Jul. 31, 2021
Disaggregation of Revenue [Line Items]
Revenues	$ 1,238,854	$ 1,364,057	$ 1,446,990
Fintech [Member]
Disaggregation of Revenue [Line Items]
Revenues	86,610	64,593	57,620
National Retail Solutions [Member]
Disaggregation of Revenue [Line Items]
Revenues	77,115	51,299	24,748
Net2phone [Member]
Disaggregation of Revenue [Line Items]
Revenues	72,388	58,185	44,502
Traditional Communications [Member]
Disaggregation of Revenue [Line Items]
Revenues	1,002,741	1,189,980	1,320,120
BOSS Revolution Money Transfer [Member] | Fintech [Member]
Disaggregation of Revenue [Line Items]
Revenues	76,928	55,561	49,322
Other [Member] | Fintech [Member]
Disaggregation of Revenue [Line Items]
Revenues	9,682	9,032	8,298
Other [Member] | Traditional Communications [Member]
Disaggregation of Revenue [Line Items]
Revenues	33,269	36,491	42,271
IDT Digital Payments [Member] | Traditional Communications [Member]
Disaggregation of Revenue [Line Items]
Revenues	417,057	473,215	461,609
BOSS Revolution Calling [Member] | Traditional Communications [Member]
Disaggregation of Revenue [Line Items]
Revenues	322,134	387,937	455,244
IDT Global [Member] | Traditional Communications [Member]
Disaggregation of Revenue [Line Items]
Revenues	$ 230,281	$ 292,337	$ 360,996