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Stock-Based Compensation Plans - Total Estimated Stock-based Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 31, 2022	Jul. 31, 2021	Jul. 31, 2022	Jul. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Effect on net income	$ 3,736	$ 3,015	$ 6,523	$ 5,167
Cost of Sales [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Effect on net income	254	199	449	343
Selling and Marketing Expense [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Effect on net income	675	918	1,160	1,279
Research and Development Expense [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Effect on net income	490	388	857	668
General and Administrative Expense [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Effect on net income	$ 2,317	$ 1,510	$ 4,057	$ 2,877

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
-Section 50
-Paragraph 1
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-SubTopic 10
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-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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+ References

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