v3.25.4
S000088934 [Member] N-1A Cover
Sep. 30, 2025
Prospectus [Line Items]  
Document Type 485BPOS
Amendment Flag false
Registrant Name WASATCH FUNDS TRUST
Entity Central Index Key 0000806633
Entity Investment Company Type N-1A
Document Period End Date Sep. 30, 2025
Prospectus Date Jan. 31, 2026