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Derivative Financial Instruments and Risk Management - Additional Information (Detail) - USD ($) | 12 Months Ended |
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Jan. 31, 2019 | Jan. 31, 2018
Cross Currency Interest Rate Contract [Member] |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |
Derivative notional amount | $ 6,300,000 | $ 7,800,000
Maximum remaining maturity of foreign currency derivatives | 5 years |
Amount of gain reclassify from Accumulated OCI into income during next 12 months | $ 400,000 |
Interest Rate Contract [Member] |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |
Derivative notional amount | $ 11,300,000 | $ 14,300,000

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- Definition Aggregate notional amount specified by the derivative(s). Expressed as an absolute value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column B + 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 The estimated value of gains (losses), net anticipated to be transferred in the future from accumulated other comprehensive income into earnings. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 30 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=112277219&loc=d3e80845-113994 + Details
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- Definition Maximum amount of time remaining before foreign currency exchange rate derivatives mature or expire, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Details
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- Details
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