Derivative Financial Instruments and Risk Management - Schedule of Impact of the Derivative Instruments in the Condensed Consolidated Financial Statements (Detail) - USD ($) $ in Thousands	12 Months Ended
Jan. 31, 2019	Jan. 31, 2018
Cross Currency Interest Rate Swap [Member] \| Other Long Term Liabilities [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Cross-currency interest rate swap	$ 600	$ 1,513
Interest Rate Swap [Member] \| Other Assets [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Interest rate swap	85	101
Cash Flow Hedge [Member] \| Cross Currency Interest Rate Contract [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Amount of Gain (Loss) Recognized in OCI on Derivative	$ 797	(1,330)
Location of Gain (Loss) Reclassified from Accumulated OCI into Income	Other Income (Expense)
Amount of Gain (Loss) Reclassified from Accumulated OCI into Income	$ 769	$ (1,344)

Fair value, after the 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, expected to be settled after one year or the normal operating cycle, if longer. Includes assets not subject to a master netting arrangement and not elected to be offset.

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The effective portion of net gain (loss) reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying as hedging instruments.

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