Equity Plans and Stock-based Compensation - Stock-based Compensation Expense (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Jan. 31, 2026 |
Jan. 31, 2025 |
Jan. 31, 2024 |
|
| Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] | |||
| Total stock-based compensation expense | $ 64,694 | $ 75,651 | $ 117,337 |
| Cost of revenue | |||
| Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] | |||
| Total stock-based compensation expense | 4,702 | 5,102 | 6,154 |
| Research and development | |||
| Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] | |||
| Total stock-based compensation expense | 31,161 | 37,050 | 50,935 |
| Sales and marketing | |||
| Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] | |||
| Total stock-based compensation expense | 11,058 | 15,875 | 22,934 |
| General and administrative | |||
| Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] | |||
| Total stock-based compensation expense | $ 17,773 | $ 17,624 | $ 37,314 |