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Convertible Senior Notes - 2020 Notes-Convertible Bond Hedge and Warrant Transactions (Detail) - Convertible Senior Notes Due 2020 [Member] - shares | 1 Months Ended | 12 Months Ended
--- | --- | ---
Jul. 31, 2020 | May 31, 2020 | Jan. 30, 2021
Debt Instrument |  |  |
Shares issued upon conversion | 1,116,718 | 14,927 |
Convertible note bond hedges |  |  |
Debt Instrument |  |  |
Shares issued upon conversion |  |  | 1,386,580

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- Definition The number of shares issued in exchange for the original debt being converted in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or payments in the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 5 -URI https://asc.fasb.org/extlink&oid=126999549&loc=d3e4332-108586 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI https://asc.fasb.org/extlink&oid=126999549&loc=d3e4304-108586 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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