XML 46 R34.htm IDEA: XBRL DOCUMENT
v3.23.3

Stock-based Compensation (Tables) | 9 Months Ended
--- | ---
Oct. 31, 2023
Share-Based Payment Arrangement [Abstract] |
Classification of Stock-based Compensation | The following table presents the classification of stock-based compensation for the periods indicated:
|  | Three Months Ended October 31, |  |  | Nine Months Ended October 31, |
|  | 2023 |  |  | 2022 |  |  | 2023 |  |  | 2022 |
|  | (in thousands) |
Stock-based compensation: |  |  |  |  |  |  |  |  |  |  |  |
Cost of revenue |  | $ | 868 |  |  | $ | 360 |  |  | $ | 2,694 |  |  | $ | 1,071 |
Research and development |  |  | 17,898 |  |  |  | 18,741 |  |  |  | 54,809 |  |  |  | 53,775 |
Selling, general and administrative |  |  | 8,643 |  |  |  | 9,000 |  |  |  | 25,293 |  |  |  | 27,205 |
Total stock-based compensation |  | $ | 27,409 |  |  | $ | 28,101 |  |  | $ | 82,796 |  |  | $ | 82,051 |
Weighted-Average Assumptions Used to Estimate Fair Value | The following table sets forth the weighted-average assumptions used to estimate the fair value of employee stock purchase plan awards for the periods indicated:
|  | Three Months Ended October 31, |  |  | Nine Months Ended October 31, |
|  | 2023 |  |  | 2022 |  |  | 2023 |  |  | 2022 |
Employee stock purchase plan awards: |  |  |  |  |  |  |  |  |  |  |  |
Volatility |  |  | 54 | % |  |  | 72 | % |  |  | 56 | % |  |  | 81 | %
Risk-free interest rate |  |  | 5.49 | % |  |  | 3.78 | % |  |  | 5.11 | % |  |  | 2.32 | %
Expected term (years) |  |  | 0.5 |  |  |  | 0.5 |  |  | 0.5 |  |  | 0.5 |
Dividend yield |  |  | 0 | % |  |  | 0 | % |  |  | 0 | % |  |  | 0 | %
Stock Option Activities | The following table summarizes stock option activities for the period indicated:
|  | Option Outstanding |
|  |  |  |  |  |  |  |  |  |  |  |  | Weighted- |  |  |  |
|  |  |  |  |  |  |  |  |  | Total Intrinsic |  |  | Average |  |  |  |
|  |  |  |  |  |  |  | Weighted- |  | Value Of |  |  | Remaining |  |  | Aggregate |
|  |  |  |  | Weighted- |  |  | Average |  | Options |  |  | Contractual |  |  | Intrinsic |
|  |  |  |  | Average |  |  | Grant-date |  | Exercised |  |  | Term |  |  | Value |
|  | Shares |  |  | Exercise Price |  |  | Fair Value |  | (in thousands) |  |  | (in years) |  |  | (in thousands) |
Outstanding at January 31, 2023 |  |  | 484,791 |  |  | $ | 42.18 |  |  |  |  |  |  |  |  |  |  |  |
Exercised |  |  | (65,188 | ) |  |  | 23.62 |  |  |  |  | $ | 3,418 |  |  |  |  |  |  |
Forfeited |  |  | (926 | ) |  |  | 42.59 |  |  |  |  |  |  |  |  |  |  |  |
Expired |  |  | (1,064 | ) |  |  | 74.33 |  |  |  |  |  |  |  |  |  |  |  |
Outstanding at October 31, 2023 |  |  | 417,613 |  |  |  | 45.00 |  |  |  |  |  |  |  |  | 3.68 |  |  | $ | 2,584 |
Exercisable at October 31, 2023 |  |  | 358,750 |  |  | $ | 46.30 |  |  |  |  |  |  |  |  | 3.15 |  |  | $ | 1,790 |
Restricted Stock Unit Activities | The following table summarizes restricted stock unit activities for the period indicated:
|  |  |  |  | Weighted- |
|  |  |  |  | Average |
|  |  |  |  | Grant-Date |
|  | Shares |  |  | Fair Value |
Unvested at January 31, 2023 |  |  | 2,573,359 |  |  | $ | 86.81 |
Granted |  |  | 1,190,375 |  |  |  | 71.77 |
Vested |  |  | (969,060 | ) |  |  | 78.11 |
Forfeited |  |  | (128,201 | ) |  |  | 76.31 |
Unvested at October 31, 2023 |  |  | 2,666,473 |  |  | $ | 83.76 |

X
- References No definition available. + Details
Name: | us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of allocation of amount expensed and capitalized for award under share-based payment arrangement to statement of income or comprehensive income and statement of financial position. Includes, but is not limited to, corresponding line item in financial statement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
Name: | us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the number and weighted-average grant date fair value for restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited during the year. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
Name: | us-gaap_ScheduleOfShareBasedCompensationRestrictedStockUnitsAwardActivityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (d) -SubTopic 10 -Topic 718 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (e) -SubTopic 10 -Topic 718 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
Name: | us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 718 -SubTopic 10 -Subparagraph (f)(2) -Name Accounting Standards Codification -Paragraph 2 -Section 50 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
Name: | us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration