S000000885 [Member] Shareholder Fees - Wasatch Micro Cap Fund |
Sep. 30, 2025 |
|---|---|
| Investor Class shares | |
| Prospectus [Line Items] | |
| Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) | 0.00% |
| Redemption Fee (as a percentage of Amount Redeemed) | (2.00%) |
| Exchange Fee (as a percentage of Amount Redeemed) | 0.00% |
| Institutional Class Shares | |
| Prospectus [Line Items] | |
| Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) | 0.00% |
| Redemption Fee (as a percentage of Amount Redeemed) | (2.00%) |
| Exchange Fee (as a percentage of Amount Redeemed) | 0.00% |