Summary of Significant Accounting Policies (Policies)	3 Months Ended
Summary of Significant Accounting Policies (Policies)	May 04, 2013
Accounting Policies [Abstract]
Nature of Business	Nature of Business Five Below, Inc. (the “Company”) is a specialty value retailer offering merchandise targeted at the teen and pre-teen demographic. The Company offers an edited assortment of products, priced at $5 and below. The Company’s edited assortment of products includes select brands and licensed merchandise. The Company believes its merchandise is readily available, and that there are a number of potential vendors that could be utilized, if necessary, under approximately the same terms the Company is currently receiving; thus, it is not dependent on a single vendor or a group of vendors. The Company is incorporated in the Commonwealth of Pennsylvania and as of May 4, 2013 operated 258 stores in Pennsylvania, New Jersey, Delaware, Maryland, Virginia, Massachusetts, New Hampshire, West Virginia, North Carolina, New York, Connecticut, Rhode Island, Ohio, Illinois, Indiana, Michigan, Missouri and Georgia, each operating under the name “Five Below.” On June 12, 2013, the Company completed an internal business restructuring pursuant to which the Company formed Five Below Merchandising, Inc., a wholly-owned subsidiary (the “Subsidiary”), and transferred to the Subsidiary assets, operations and employees related to the Company's merchandising operations (the “Restructuring”). Going forward, the Subsidiary will purchase and sell to the Company certain goods for sale at the Company's retail locations and the Company will provide to the Subsidiary back office support, office space and other services, in each case, pursuant to agreements between the Company and the Subsidiary. In connection with the Restructuring, on June 12, 2013, the Company amended and restated the Loan and Security Agreement (note 3) and certain other ancillary documents to the Company's Revolving Credit Facility in order to, among other things, allow the Company to form and capitalize the Subsidiary and make the Subsidiary a party to the Loan and Security Agreement as a guarantor of the Company's obligations thereunder. The Subsidiary has also acceded to the credit agreement and certain ancillary documents to the Company's Term Loan Facility (note 3) as a guarantor of the Company's obligations thereunder. For accounting purposes, going forward, the Company's financial statements will include the accounts of the Company and the newly formed corporation. All intercompany transactions and accounts will be eliminated in consolidation.
Fiscal Year	Fiscal Year The Company operates on a 52/53-week fiscal year ending on the Saturday closest to January 31. References to “fiscal year 2013” or “fiscal 2013” refer to the period from February 3, 2013 to February 1, 2014 and consists of a 52-week fiscal year. References to “fiscal year 2012” or “fiscal 2012” refer to the period from January 29, 2012 to February 2, 2013 and consisted of a 53-week fiscal year. The fiscal quarters ended May 4, 2013 and April 28, 2012 refer to the 13-week periods ended as of those dates.
Basis of Presentation	Basis of Presentation The balance sheets as of May 4, 2013 and April 28, 2012, the statements of operations for the thirteen weeks ended May 4, 2013 and April 28, 2012, the statement of shareholders’ equity for the thirteen weeks ended May 4, 2013 and the statements of cash flows for the thirteen weeks ended May 4, 2013 and April 28, 2012 have been prepared by the Company in conformity with U.S. generally accepted accounting principles (“U.S. GAAP”) for interim reporting and are unaudited. In the opinion of management, the financial statements include all known adjustments (which consist primarily of normal, recurring accruals, estimates and assumptions that impact the financial statements) necessary to present fairly the financial position at the balance sheet dates and the results of operations and cash flows for the periods ended May 4, 2013 and April 28, 2012. The balance sheet as of February 2, 2013, presented herein, has been derived from the audited balance sheet included in the Company's Annual Report on Form 10-K for fiscal 2012 as filed with the Securities and Exchange Commission on March 28, 2013 and referred to herein as the “Annual Report,” but does not include all disclosures required by U.S. GAAP. These financial statements should be read in conjunction with the financial statements for the fiscal year ended February 2, 2013 and footnotes thereto included in the Annual Report. The results of operations for the thirteen weeks ended May 4, 2013 and April 28, 2012 are not necessarily indicative of operating results for the year ending February 1, 2014 or any other period.
Fair Value of Financial Instruments	Fair Value of Financial Instruments Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. Assets and liabilities measured at fair value are classified using the following hierarchy, which is based upon the transparency of inputs to the valuation at the measurement date: Level 1: Quoted market prices in active markets for identical assets or liabilities. Level 2: Inputs, other than Level 1, that are either directly or indirectly observable. Level 3: Unobservable inputs developed using the Company’s estimates and assumptions which reflect those that market participants would use. The classification of fair value measurements within the hierarchy is based upon the lowest level of input that is significant to the measurement. The Company’s financial instruments consist primarily of cash equivalents, accounts payable, and borrowings under a line of credit and Term Loan Facility (as defined in note 3). The Company believes that: (1) the carrying value of cash equivalents and accounts payable are representative of their respective fair value due to the short-term nature of these instruments; and (2) the carrying value of the borrowings under the line of credit and Term Loan Facility approximates their fair value because the line of credit’s and Term Loan Facility's interest rates vary with market interest rates. The Company considers the inputs utilized to determine the fair value of the borrowings under the Term Loan Facility to be Level 2 inputs. At May 4, 2013, February 2, 2013, and April 28, 2012, the Company had cash equivalents of $30.1 million, $35.7 million and $9.6 million, respectively. The Company’s cash equivalents consist of credit card receivables and a money market account for which fair value was determined based on Level 1 inputs.