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Derivative Financial Instruments and Risk Management - Schedule of Impact of the Derivative Instruments in the Condensed Consolidated Financial Statements (Detail) - Cash Flow Hedge [Member] - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2020	Jan. 31, 2019
Cross Currency Interest Rate Contract [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Amount of Gain Recognized in OCI on Derivative	$ 159	$ 797
Location of Gain Reclassified from Accumulated OCI into Income (Expense)	Other Income
Amount of Gain Reclassified from Accumulated OCI into Income (Expense)	$ 338	769
Cross Currency Interest Rate Swap [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional Amount	4,489	6,329
Fair Value Derivatives, Liability	250	600
Interest Rate Swap [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional Amount	8,250	11,250
Fair Value Derivatives, Asset		$ 85
Fair Value Derivatives, Liability	$ 96

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Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement.

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