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Cover Page - USD ($)
 12 Months Ended
Feb. 01, 2025
Apr. 04, 2025
Aug. 02, 2024
Document Information [Line Items]      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Feb. 01, 2025    
Current Fiscal Year End Date --02-01    
Document Transition Report false    
Entity File Number 001-35535    
Entity Registrant Name TILLY’S, INC.    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 45-2164791    
Entity Address, Address Line One 10 Whatney    
Entity Address, City or Town Irvine    
Entity Address, State or Province CA    
Entity Address, Postal Zip Code 92618    
City Area Code 949    
Local Phone Number 609-5599    
Title of 12(b) Security Class A Common Stock, $0.001 par value per share    
Trading Symbol TLYS    
Security Exchange Name NYSE    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Accelerated Filer    
Entity Small Business true    
Entity Emerging Growth Company false    
Entity Shell Company false    
ICFR Auditor Attestation Flag true    
Document Financial Statement Error Correction [Flag] false    
Entity Public Float     $ 118,072,516
Documents Incorporated by Reference Portions of the registrant's proxy statement (the "Proxy Statement") for its Annual Meeting of Stockholders anticipated to be held June 11, 2025 are incorporated by reference into Part III of this Annual Report on Form 10-K. Only those portions of the Proxy Statement which are specifically incorporated by reference herein shall constitute a part of this Annual Report on Form 10-K.    
Amendment Flag false    
Document Fiscal Year Focus 2024    
Document Fiscal Period Focus FY    
Entity Central Index Key 0001524025    
Class A Common Stock      
Document Information [Line Items]      
Entity Common Stock, Shares Outstanding   22,845,799  
Class B Common Stock      
Document Information [Line Items]      
Entity Common Stock, Shares Outstanding   7,306,108