Fair Value Measurements - Summary of Outstanding Balance Sheet Hedges (Detail) - Foreign currency derivative contracts - USD ($) $ in Thousands	Oct. 31, 2019	Jan. 31, 2019
Prepaid expenses and other current assets
Derivatives, Fair Value [Line Items]
Derivative Assets	$ 59	$ 0
Accrued expenses
Derivatives, Fair Value [Line Items]
Derivative Liabilities	$ 35	$ 88

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- Definition

Fair value as of the balance sheet date of all foreign currency derivative assets not designated as hedging instruments.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4B
-Subparagraph (c)(2)
-URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5624163-113959

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- Definition

Fair value as of the balance sheet date of all foreign currency derivative liabilities not designated as hedging instruments.

+ References

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