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Share-Based Compensation - Additional Information (Detail) | 6 Months Ended
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Jul. 31, 2018 shares
Performance Stock Units (PSUs) |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Stock units vested | 209,999
Stock Options |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Stock exercised | 410,000
Stock Appreciation Rights (SARs) |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Stock exercised | 167,725
Restricted Stock Units (RSUs) |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Stock units vested | 212,500

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- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period. + 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)(2)(iii)(2) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + 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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- Definition Number of non-option equity instruments exercised by participants. + 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)(2) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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