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Employee Stock Purchase Plan (Details) - shares | 12 Months Ended |  |  |  |  |
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Dec. 31, 2021 | Jan. 31, 2026 | Jan. 31, 2025 | Jan. 31, 2024 | Jan. 31, 2023 | Jan. 31, 2022
Employee Stock Purchase Plan |  |  |  |  |  |
Shares issued on ESPP | 6 |  |  |  |  |
Shares available in ESPP |  |  | 3 | 3 | 3 | 3
Subsequent Events |  |  |  |  |  |
Employee Stock Purchase Plan |  |  |  |  |  |
Shares available in ESPP |  | 3 |  |  |  |

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- Definition Number of allocated shares held by the Employee Stock Option Plan at balance sheet date. Allocated shares are shares that have been assigned to individual participant accounts based on a known formula. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 718 -SubTopic 40 -Section 50 -Paragraph 1 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480489/718-40-50-1 + Details
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