Composition of certain financial statement captions - Schedule of future amortization expense (Detail) - USD ($) $ in Thousands |
Jan. 31, 2021 |
Jan. 31, 2020 |
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| Composition of Certain Financial Statement Captions [Abstract] | ||
| 2022 | $ 508 | |
| 2023 | 508 | |
| 2024 | 494 | |
| 2025 | 410 | |
| 2026-Thereafter | 805 | |
| Net carrying value | $ 2,725 | $ 1,199 |
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- Definition Composition of Certain Financial Statement Captions [Abstract] No definition available.
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- Definition Finite-Lived Intangible Assets, Amortization Expense, after Year Four No definition available.
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- Definition 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). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition 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). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in third 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). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in second 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). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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