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Business Segment Information (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Apr. 30, 2020 | Apr. 30, 2019 | Apr. 30, 2020 | Apr. 30, 2019
Segment Reporting Information [Line Items] |  |  |  |
Revenues | $ 321,336 | $ 341,255 | $ 985,425 | $ 1,053,044
Income (loss) from operations | 3,792 | 449 | 3,722 | 174
Other operating expense, net | (234) | (2,420) | (3,402) | (5,805)
Operating Segments [Member] | Telecom & Payment Services [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenues | 308,790 | 328,838 | 947,342 | 1,018,637
Income (loss) from operations | 9,934 | 4,245 | 21,441 | 12,605
Other operating expense, net |  | (2,300) | (2,150) | (5,185)
Operating Segments [Member] | net2phone [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenues | 12,546 | 12,417 | 38,083 | 34,407
Income (loss) from operations | (3,932) | (1,266) | (10,512) | (4,663)
Other operating expense, net | (386) |  | (983) | 25
Operating Segments [Member] | Corporate [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenues |  |  |  |
Income (loss) from operations | (2,210) | (2,530) | (7,207) | (7,768)
Other operating expense, net | $ 152 | $ (120) | $ (269) | $ (645)

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