v3.25.4
S000035891 [Member] Shareholder Fees - Wasatch Frontier Emerging Small Countries 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%