S000000885 [Member] Annual Fund Operating Expenses - Wasatch Micro Cap Fund |
Sep. 30, 2025 |
|---|---|
| Investor Class shares | |
| Prospectus [Line Items] | |
| Management Fees (as a percentage of Assets) | 1.50% |
| Other Expenses (as a percentage of Assets): | 0.14% |
| Expenses (as a percentage of Assets) | 1.64% |
| Institutional Class Shares | |
| Prospectus [Line Items] | |
| Management Fees (as a percentage of Assets) | 1.50% |
| Other Expenses (as a percentage of Assets): | 0.09% |
| Expenses (as a percentage of Assets) | 1.59% |