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Selected Quarterly Financial Data (Unaudited) (Details Textual) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
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Jul. 31, 2018 | Apr. 30, 2018 | Jan. 31, 2018 | Oct. 31, 2017 | Jul. 31, 2017 | Apr. 30, 2017 | Jan. 31, 2017 | Oct. 31, 2016 | Jul. 31, 2018 | Jul. 31, 2017 | Jul. 31, 2016
Selected Quarterly Financial Data (Unaudited) (Textual) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
(Provision for) benefit from income taxes |  |  |  |  |  |  |  |  |  |  |  |  | $ 16,600 |  | $ (2,902) | $ 2,021 | $ (4,110)
Severance expense | $ 300 |  | $ 3,700 |  |  |  |  |  |  |  |  |  |  |  | 4,630 |  | 6,510
Loss from operations expense | 10,468 | [1] | (1,693) | [2] | $ (480) | [3] | $ 83 | $ 3,737 | [4] | $ (6,502) | [5] | $ 3,128 | 5,186 | [6] | 8,378 | 5,549 | 26,203
Expense related to legal settlement and mutual release, including legal fees |  |  |  |  |  |  |  |  |  | 10,100 |  |  |  |  |  |  |
Other operating losses, net | 400 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues | 392,647 | [1] | $ 365,410 | [2] | 395,883 | [3] | $ 393,555 | 394,987 | [4] | $ 370,035 | [5] | $ 367,556 | $ 369,151 | [6] | $ 1,547,495 | $ 1,501,729 | $ 1,496,261
Breakage revenue [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Selected Quarterly Financial Data (Unaudited) (Textual) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues | $ 9,500 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Deferred tax asset [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Selected Quarterly Financial Data (Unaudited) (Textual) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Increase in valuation allowance on deferred tax assets |  |  |  |  |  |  |  | $ 11,100 |  |  |  |  |  |  |  |  |
AMT [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Selected Quarterly Financial Data (Unaudited) (Textual) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
(Provision for) benefit from income taxes |  |  |  |  | $ 3,300 |  |  |  |  |  |  |  |  |  |  |  |
[1] | Included in revenues was $9.5 million related to a change in estimate for recognizing certain breakage revenue. The Company recorded breakage revenue when the likelihood of the customer exercising its remaining rights became remote. In the fourth quarter of 2018, the Company changed when it generally deemed the likelihood remote from 24 or 36 months of no activity to 12 or 24 months of no activity. Included in income from operations was severance expense of $0.3 million and other operating losses, net of $0.4 million.
[2] | Included in loss from operations was severance expense of $3.7 million.
[3] | Included in net income was a benefit from income taxes of $3.3 million for an anticipated AMT credit refund.
[4] | Included in net loss was income tax expense of $11.1 million from an increase in the valuation allowance on deferred tax assets.
[5] | Included in loss from operations was expense of $10.1 million related to a legal settlement and mutual release, including legal fees incurred in the quarter.
[6] | Included in net income was a benefit from income taxes of $16.6 million from the full recognition of certain deferred tax assets.

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