XML 41 R30.htm IDEA: XBRL DOCUMENT v2.4.0.8

Summary of Significant Accounting Policies (Fair Value of Financial Instruments) (Details) (Fair Value, Inputs, Level 1 [Member], USD $) In Millions, unless otherwise specified	Feb. 01, 2014	Feb. 02, 2013
Fair Value, Inputs, Level 1 [Member]
Significant Accounting Policies [Line Items]
Cash equivalents	$ 2.3	$ 1.6

X

- Definition

Cash Equivalents

+ References

No definition available.

+ Details

Name:	five_CashEquivalents
Namespace Prefix:	five_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Details

Name:	five_SignificantAccountingPoliciesLineItems
Namespace Prefix:	five_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration