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Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Oct. 31, 2017 | Oct. 31, 2016
Statement of Cash Flows [Abstract] |  |
Net income (Loss), Including Portion Attributable to Noncontrolling Interest | $ 77,560 | $ 167,280
Adjustments to reconcile net income to net cash provided by operating activities: |  |
Depreciation and amortization, including debt cost | 16,012 | 14,820
Allowance for doubtful accounts | 547 | 22
Equity in (earnings) losses of unconsolidated affiliates | (109) | 349
Stock-based payment compensation | 5,306 | 5,085
Loss on sale of property and equipment | 4,460 | 38
Deferred income taxes | 2,759 | 22,088
Changes in operating assets and liabilities, net of effects from acquisitions: |  |
Accounts receivable | (55,904) | (29,472)
Vehicle pooling costs | (6,568) | (2,935)
Inventories | 36 | 1,152
Prepaid expenses and other current assets | (62) | 1,392
Other assets | (2,420) | (202)
Accounts payable and accrued liabilities | 22,213 | (14,828)
Deferred revenue | 166 | (602)
Income taxes receivable | 6,272 | (92,172)
Income taxes payable | 23,460 | 2,615
Other liabilities | (368) | (337)
Net cash provided by operating activities | 93,360 | 74,293
Cash flows from investing activities: |  |
Purchases of property and equipment | (41,484) | (38,209)
Proceeds from sale of property and equipment | 2,019 | 190
Purchase of assets in connection with acquisitions | 123 | 0
Investment in unconsolidated affiliate | 0 | (1,050)
Net cash used in investing activities | (39,342) | (39,069)
Cash flows from financing activities: |  |
Proceeds from the exercise of stock options | 9,253 | 13,977
Payments for employee stock-based tax withholdings | 3 | 134,615
Net (repayments) proceeds on revolving loan facility | (49,000) | 103,900
Net cash used in financing activities | (39,750) | (16,738)
Effect of foreign currency translation | (122) | (5,914)
Net increase in cash and cash equivalents | 14,146 | 12,572
Cash and cash equivalents at beginning of period | 210,100 | 155,849
Cash and cash equivalents at end of period | 224,246 | 168,421
Supplemental disclosure of cash flow information: |  |
Interest paid | 5,496 | 5,428
Income taxes paid, net of refunds | $ 4,167 | $ 2,677

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