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Revenue Recognition (Details 1) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jan. 31, 2019 | Jan. 31, 2018 | Jan. 31, 2019 | Jan. 31, 2018
Outside the United States: |  |  |  |
Total outside the United States | $ 115,673 | $ 123,829 | $ 242,169 | $ 253,523
Revenues, Total | 349,473 | 395,883 | 711,789 | 789,438
United States [Member] |  |  |  |
Outside the United States: |  |  |  |
Revenues, Total | 233,800 | 272,054 | 469,620 | 535,915
United Kingdom [Member] |  |  |  |
Outside the United States: |  |  |  |
Total outside the United States | 49,083 | 54,782 | 103,483 | 115,313
Netherlands [Member] |  |  |  |
Outside the United States: |  |  |  |
Total outside the United States | 48,057 | 47,152 | 98,979 | 96,861
Other [Member] |  |  |  |
Outside the United States: |  |  |  |
Total outside the United States | 18,533 | 21,895 | 39,707 | 41,349
Telecom & Payment Services [Member] |  |  |  |
Outside the United States: |  |  |  |
Total outside the United States | 112,244 | 121,993 | 236,203 | 249,879
Revenues, Total | 337,950 | 387,065 | 689,799 | 772,148
Telecom & Payment Services [Member] | United States [Member] |  |  |  |
Outside the United States: |  |  |  |
Revenues, Total | 225,706 | 265,072 | 453,596 | 522,269
Telecom & Payment Services [Member] | United Kingdom [Member] |  |  |  |
Outside the United States: |  |  |  |
Total outside the United States | 49,075 | 54,782 | 103,467 | 115,313
Telecom & Payment Services [Member] | Netherlands [Member] |  |  |  |
Outside the United States: |  |  |  |
Total outside the United States | 48,057 | 47,152 | 98,979 | 96,861
Telecom & Payment Services [Member] | Other [Member] |  |  |  |
Outside the United States: |  |  |  |
Total outside the United States | 15,112 | 20,059 | 33,757 | 37,705
Total net2phone [Member] |  |  |  |
Outside the United States: |  |  |  |
Total outside the United States | 3,429 | 1,836 | 5,966 | 3,644
Revenues, Total | 11,523 | 8,299 | 21,990 | 16,087
Total net2phone [Member] | United States [Member] |  |  |  |
Outside the United States: |  |  |  |
Revenues, Total | 8,094 | 6,463 | 16,024 | 12,443
Total net2phone [Member] | United Kingdom [Member] |  |  |  |
Outside the United States: |  |  |  |
Total outside the United States | 8 |  | 16 |
Total net2phone [Member] | Netherlands [Member] |  |  |  |
Outside the United States: |  |  |  |
Total outside the United States |  |  |  |
Total net2phone [Member] | Other [Member] |  |  |  |
Outside the United States: |  |  |  |
Total outside the United States | 3,421 | 1,836 | 5,950 | 3,644
All Other [Member] |  |  |  |
Outside the United States: |  |  |  |
Total outside the United States |  |  |  |
Revenues, Total |  | 519 |  | 1,203
All Other [Member] | United States [Member] |  |  |  |
Outside the United States: |  |  |  |
Total outside the United States |  |  |  |
Revenues, Total |  | 519 |  | 1,203
All Other [Member] | United Kingdom [Member] |  |  |  |
Outside the United States: |  |  |  |
Total outside the United States |  |  |  |
All Other [Member] | Netherlands [Member] |  |  |  |
Outside the United States: |  |  |  |
Total outside the United States |  |  |  |
All Other [Member] | Other [Member] |  |  |  |
Outside the United States: |  |  |  |
Total outside the United States |  |  |  |

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