Cash, Cash Equivalents, and Investments - Components of Cash and Cash Equivalents and Investments (Details) - USD ($) $ in Thousands |
Apr. 30, 2026 |
Jan. 31, 2026 |
Apr. 30, 2025 |
|---|---|---|---|
| Cash and cash equivalents: | |||
| Cash | $ 57,231 | $ 51,006 | |
| Money market funds | 150,653 | 185,205 | |
| Commercial paper | 996 | 1,191 | |
| Total cash and cash equivalents | 208,880 | 237,402 | $ 371,828 |
| Debt Securities, Available-for-sale [Line Items] | |||
| Total available-for-sale investments | 235,077 | 232,436 | |
| U.S. Treasury securities | |||
| Debt Securities, Available-for-sale [Line Items] | |||
| Total available-for-sale investments | 61,440 | 60,429 | |
| Commercial paper | |||
| Debt Securities, Available-for-sale [Line Items] | |||
| Total available-for-sale investments | 5,182 | 2,218 | |
| Corporate debt securities | |||
| Debt Securities, Available-for-sale [Line Items] | |||
| Total available-for-sale investments | 141,566 | 143,490 | |
| U.S. Government agency securities | |||
| Debt Securities, Available-for-sale [Line Items] | |||
| Total available-for-sale investments | $ 26,889 | $ 26,299 |
| X | ||||||||||
- Definition Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Excludes cash and cash equivalents within disposal group and discontinued operation. Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition Amount of cash and cash equivalent. Cash includes, but is not limited to, currency on hand, demand deposit with financial institution, and account with general characteristic of demand deposit. Cash equivalent includes, but is not limited to, short-term, highly liquid investment that is both readily convertible to known amount of cash and so near maturity that it presents insignificant risk of change in value because of change in interest rate. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Unsecured short-term debt instrument issued by corporations which are highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three-years ago does not become a cash equivalent when its remaining maturity is three months. No definition available.
|
| X | ||||||||||
- Definition Amount excluding accrued interest, of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), classified as current. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition Investment in short-term money-market instruments (such as commercial paper, banker's acceptances, repurchase agreements, government securities, certificates of deposit, and so forth) which are highly liquid (that is, readily convertible to known amounts of cash) and so near their maturity that they present an insignificant risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify as cash equivalents by definition. Original maturity means an original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three-years ago does not become a cash equivalent when its remaining maturity is three months. No definition available.
|
| X | ||||||||||
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|