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Organization and Summary of Significant Accounting Policies - Restricted Stock and Options Outstanding Used in Per Share Calculations (Detail) - shares shares in Thousands | 12 Months Ended
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Jan. 31, 2020 | Jan. 31, 2019 | Jan. 31, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract] |  |  |
Stock options (in shares) | 79 | 96 | 77
Restricted stock (in shares) | 3 | 11 | 32
Total dilutive shares | 82 | 107 | 109

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- Definition Dilutive shares. + References No definition available. + Details
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- Definition Incremental common shares attributable to restricted stock. + References No definition available. + Details
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- Definition Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of share based payment arrangements using the treasury stock method. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 28A -URI http://asc.fasb.org/extlink&oid=117326831&loc=d3e1500-109256 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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- References No definition available. + Details
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