S000000885 [Member] Expense Example - Wasatch Micro Cap Fund |
Sep. 30, 2025
USD ($)
|
|---|---|
| Investor Class shares | |
| Prospectus [Line Items] | |
| Expense Example, with Redemption, 1 Year | $ 167 |
| Expense Example, with Redemption, 3 Years | 517 |
| Expense Example, with Redemption, 5 Years | 892 |
| Expense Example, with Redemption, 10 Years | 1,944 |
| Institutional Class Shares | |
| Prospectus [Line Items] | |
| Expense Example, with Redemption, 1 Year | 162 |
| Expense Example, with Redemption, 3 Years | 502 |
| Expense Example, with Redemption, 5 Years | 866 |
| Expense Example, with Redemption, 10 Years | $ 1,889 |