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Stock-based Compensation Plans - Total Estimated Stock-based Compensation Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2022	Jan. 31, 2021	Jan. 31, 2020
Effect on net income	$ 11,017	$ 6,313	$ 4,909
Cost of Sales [Member]
Effect on net income	732	319	220
Selling and Marketing Expense [Member]
Effect on net income	3,060	896	706
Research and Development Expense [Member]
Effect on net income	1,419	404	281
General and Administrative Expense [Member]
Effect on net income	$ 5,806	$ 4,694	$ 3,702

X

- Definition

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
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-URI http://asc.fasb.org/extlink&oid=122041274&loc=d3e301413-122809

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