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Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Jul. 31, 2020
Accounting Policies [Abstract] |
Contract with Customer, Contract Asset, Contract Liability, and Receivable | The change in the carrying amount of contract assets was as follows (In thousands):
Balance as of July 31, 2018 |  | $ | 11,840 |
Balance as of Capitalized contract assets during the period |  | 4,130 |
Balance as of Costs amortized during the period |  | (4,875) |
Balance as of Effect of foreign currency exchange rates |  | (521) |
Balance as of July 31, 2019 |  | $ | 10,574 |
Capitalized contract assets during the period |  | 2,875 |
Costs amortized during the period |  | (3,541) |
Effect of foreign currency exchange rates |  | 172 |
Balance as of July 31, 2020 |  | $ | 10,080 |
Schedule of foreign currency translation | The cumulative effects of foreign currency exchange rate fluctuations were as follows (In thousands):
Cumulative loss on foreign currency translation as of July 31, 2018 |  | $ | (107,928) |
Loss on foreign currency translation |  | (24,601) |
Cumulative loss on foreign currency translation as of July 31, 2019 |  | $ | (132,529) |
Gain on foreign currency translation |  | 11,441 |
Cumulative loss on foreign currency translation as of July 31, 2020 |  | $ | (121,088) |
Schedule of fair value assumptions | The Black-Scholes Merton option-pricing model utilized the following assumptions:
|  | July 31, |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
|  | 2020 |  |  |  |  |  | 2019 |  |  |  |  |  | 2018 |  |  |  |
Expected life (in years) |  | 5.4 |  | — | 5.7 |  |  | 5.3 |  | — | 6.6 |  |  | 5.3 |  | — | 6.9 |
Risk-free interest rate |  | 0.29 |  | % | — | 1.67 |  | % |  | 1.80 |  | % | — | 2.69 |  | % |  | 1.88 |  | % | — | 2.62 |  | %
Estimated volatility |  | 21.7 | % | — | 27.6 | % |  | 21.6 | % | — | 22.1 | % |  | 19.7 | % | — | 20.7 | %
Expected dividends |  | — |  |  |  |  | % |  | — |  |  |  |  | % |  | — |  |  |  |  | %
Weighted average fair value at measurement date |  | $ | 21.54 |  |  |  |  |  |  | $ | 15.47 |  |  |  |  |  |  | $ | 8.88 |  |  |  |  |

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- Definition Tabular disclosure of receivable, contract asset, and contract liability from contract with customer. Includes, but is not limited to, change in contract asset and contract liability. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130551-203045 + Details
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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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