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Stock-Based Compensation - Summary of Stock Option Activity Under 2011, 2017, and 2019 Stock Plan (Details) - 2011, 2017, and 2019 Plans $ / shares in Units, $ in Thousands | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jan. 30, 2021 USD ($) $ / shares shares | Aug. 01, 2020 USD ($) $ / shares shares
Number of Options |  |
Outstanding, beginning balance (in shares) | shares | 6,817,196 |
Granted (in shares) | shares | 392,000 |
Exercised (in shares) | shares | (1,601,726) |
Cancelled (in shares) | shares | (1,054,611) |
Outstanding, ending balance (in shares) | shares | 4,552,859 | 6,817,196
Weighted- Average Exercise Price |  |
Outstanding, beginning balance (in dollars per share) | $ / shares | $ 17.10 |
Granted (in dollars per share) | $ / shares | 56.50 |
Exercised (in dollars per share) | $ / shares | 12.82 |
Cancelled (in dollars per share) | $ / shares | 22.19 |
Outstanding, ending balance (in dollars per share) | $ / shares | $ 20.82 | $ 17.10
Weighted- Average Remaining Contractual Life (in Years) |  |
Outstanding, weighted-average remaining contractual life | 7 years 3 months 29 days | 7 years 4 months 28 days
Aggregate Intrinsic Value (in thousands) |  |
Outstanding, aggregate intrinsic value | $ | $ 339,750 | $ 40,252

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- Definition The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan. + 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 (c)(1)(iv)(3) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding. + 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 -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + 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 (e)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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