Commitments and Contingencies (Details)	Sep. 01, 2015 LegalMatter	Jun. 10, 2015 USD ($)	Jun. 10, 2014 LegalMatter	Jan. 29, 2013 LegalMatter	Dec. 05, 2012 LegalMatter	Oct. 29, 2016 USD ($)
Commitment And Contingencies [Line Items]
Established loss provisions | $						$ 2,200,000
Litigation settlement | $		$ 2,000,000
Litigation settlement term		three years
Kirstin Christiansen, Shellie Smith and Paul Haug, on behalf of themselves and all others similarly situated vs. World of Jeans & Tops
Commitment And Contingencies [Line Items]
Plaintiff filed putative class action lawsuit | LegalMatter				1
Maria Rebolledo, individually and on behalf of all others similarly situated and on behalf of the general public vs. Tilly's, Inc.; World of Jeans & Tops
Commitment And Contingencies [Line Items]
Plaintiff filed putative class action lawsuit | LegalMatter					1
Karina Whitten, on behalf of herself and all others similarly situated, v. Tilly's Inc.
Commitment And Contingencies [Line Items]
Plaintiff filed putative class action lawsuit | LegalMatter			1
Skylar Ward, on behalf of herself and all other similarly situated, v. Tilly's Inc.
Commitment And Contingencies [Line Items]
Plaintiff filed putative class action lawsuit | LegalMatter	1
Minimum [Member]
Commitment And Contingencies [Line Items]
Estimated maximum reasonably possible loss | $						0
Maximum [Member]
Commitment And Contingencies [Line Items]
Estimated maximum reasonably possible loss | $						$ 1,500,000