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Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jan. 31, 2020 | Jan. 31, 2019 | Jan. 31, 2020 | Jan. 31, 2019
Income Statement [Abstract] |  |  |  |  |
Revenues |  | $ 323,890 | $ 349,473 | $ 664,089 | $ 711,789
Costs and expenses: |  |  |  |  |
Direct cost of revenues (exclusive of depreciation and amortization) |  | 262,716 | 291,178 | 542,177 | 595,870
Selling, general and administrative | [1] | 53,789 | 50,900 | 107,223 | 101,452
Depreciation and amortization |  | 5,184 | 5,762 | 10,479 | 11,357
Severance |  | 486 |  | 1,112 |
Total costs and expenses |  | 322,175 | 347,840 | 660,991 | 708,679
Other operating expense, net (see Note 9) |  | (392) | (2,090) | (3,168) | (3,385)
Income (loss) from operations |  | 1,323 | (457) | (70) | (275)
Interest income, net |  | 195 | 186 | 467 | 295
Other income (expense), net |  | 550 | 496 | 785 | (853)
Income (loss) before income taxes |  | 2,068 | 225 | 1,182 | (833)
Provision for income taxes |  | (1,164) | (1,236) | (1,700) | (2,176)
Net income (loss) |  | 904 | (1,011) | (518) | (3,009)
Net loss (income) attributable to noncontrolling interests |  | 28 | (300) | (63) | (601)
Net income (loss) attributable to IDT Corporation |  | $ 932 | $ (1,311) | $ (581) | $ (3,610)
Earnings (loss) per share attributable to IDT Corporation common stockholders: |  |  |  |  |
Basic |  | $ 0.04 | $ (0.05) | $ (0.02) | $ (0.15)
Diluted |  | $ 0.04 | $ (0.05) | $ (0.02) | $ (0.15)
Weighted-average number of shares used in calculation of earnings (loss) per share: |  |  |  |  |
Basic |  | 26,320 | 24,816 | 26,300 | 24,323
Diluted |  | 26,451 | 24,816 | 26,300 | 24,323
(i) Stock-based compensation included in selling, general and administrative expenses |  | $ 1,167 | $ 467 | $ 2,531 | $ 880
[1] | Stock-based compensation included in selling, general and administrative expenses

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- Definition The current period expense charged against earnings on long-lived, physical assets not used in production, and which are not intended for resale, to allocate or recognize the cost of such assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset; or to reflect consumption during the period of an asset that is not used in production. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585 + Details
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