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Income Taxes - Change in Balance of Unrecognized Tax Benefits, Excluding Interest and Penalties (Detail) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2020	Jan. 31, 2019	Jan. 31, 2018
Income Tax Disclosure [Abstract]
Balance at February 1	$ 618	$ 665	$ 708
Increases in current period tax positions	2	7	55
Reductions related to lapse of statutes of limitations	(26)	(54)	(98)
Reductions related to settlement with tax authorities	(232)
Balance at January 31	$ 362	$ 618	$ 665

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Amount of unrecognized tax benefits.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
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Amount of decrease in unrecognized tax benefits resulting from settlements with taxing authorities.

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Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return.

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Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations.

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