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Other Assets - Summary of Future Estimated Amortization Expense Related to Acquired Land Leasehold Interest and Technology Patents (Details) - Technology patents and other intangible assets, net - USD ($) $ in Thousands	Jul. 31, 2021	Jan. 31, 2021
Finite-Lived Intangible Assets [Line Items]
Remainder of 2022	$ 1,454
2023	2,688
2024	2,380
2025	1,900
2026	1,636
Thereafter	6,202
Total	$ 16,260	$ 17,766

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Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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