Excess Collateral Availability Percentage

No definition available.

Name:	five_ExcessCollateralAvailabilityPercentage
Namespace Prefix:	five_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Letter Of Credit Fee Percentage

+ References

No definition available.

+ Details

Name:	five_LetterOfCreditFeePercentage
Namespace Prefix:	five_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Letters of Credit Outstanding, Borrowing Capacity

+ References

No definition available.

+ Details

Name:	five_LettersOfCreditOutstandingBorrowingCapacity
Namespace Prefix:	five_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Letters Of Credit Sublimit Under Credit Facility

+ References

No definition available.

+ Details

Name:	five_LettersOfCreditSublimitUnderCreditFacility
Namespace Prefix:	five_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Line Of Credit Facility Collateral Amount

+ References

No definition available.

+ Details

Name:	five_LineOfCreditFacilityCollateralAmount
Namespace Prefix:	five_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Percentage Of Average Borrowing Availability Under Credit Facility

+ References

No definition available.

+ Details

Name:	five_PercentageOfAverageBorrowingAvailabilityUnderCreditFacility
Namespace Prefix:	five_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage Of Borrowing Base Of Line Of Credit Facility

+ References

No definition available.

+ Details

Name:	five_PercentageOfBorrowingBaseOfLineOfCreditFacility
Namespace Prefix:	five_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage Of Unused Line Of Credit Facility Fee

+ References

No definition available.

+ Details

Name:	five_PercentageOfUnusedLineOfCreditFacilityFee
Namespace Prefix:	five_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Period Prior to Expiration of Term Facility for Expiration of Revolving Line of Credit

+ References

No definition available.

+ Details

Name:	five_PeriodPriorToExpirationOfTermFacilityForExpirationOfRevolvingLineOfCredit
Namespace Prefix:	five_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Servicing Fee

+ References

No definition available.

+ Details

Name:	five_ServicingFee
Namespace Prefix:	five_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_DebtInstrumentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

For an unclassified balance sheet, the carrying amount (net of accumulated amortization) as of the balance sheet date of capitalized costs associated with the issuance of debt instruments (for example, legal, accounting, underwriting, printing, and registration costs) that will be charged against earnings over the life of the debt instruments to which such costs pertain.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 45

-Paragraph 3

-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28555-108399

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.17)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 17

-Article 5

+ Details

Name:	us-gaap_DeferredFinanceCostsNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of the cost of borrowed funds accounted for as interest expense.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 20

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6450988&loc=d3e26243-108391

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 225

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-04.9)

-URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Paragraph 9

-Article 9

+ Details

Name:	us-gaap_InterestExpense
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

No definition available.

+ Details

Name:	us-gaap_LettersOfCreditOutstandingAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.19(b),22(b))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

-Article 5

+ Details

Name:	us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

+ Details

Name:	us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of cash inflow from contractual arrangement with the lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.4-08.(f))

-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 08

-Paragraph f

-Article 4

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Financing Activities

-URI http://asc.fasb.org/extlink&oid=6513228

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 14

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3255-108585

+ Details

Name:	us-gaap_ProceedsFromLinesOfCredit
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of fees from providing shareholder services, including, but not limited to, answering shareholder inquiries and providing shareholders with information about their investments.

+ References

No definition available.

+ Details

Name:	us-gaap_ServicingFees
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

Name:	five_DateRangeAxis=five_A20122013Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=five_BorrowingCapacityIncreaseUnderCertainConditionsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=us-gaap_RevolvingCreditFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Financing Transactions, Line of Credit and Note Payable (Line of Credit) (Details) (USD $)	0 Months Ended	12 Months Ended
	Jul. 24, 2012	Jan. 31, 2015	Feb. 01, 2014	Feb. 02, 2013
Debt Instrument [Line Items]
Increase in revolving credit facility		$ 7,000,000us-gaap_ProceedsFromLinesOfCredit	$ 0us-gaap_ProceedsFromLinesOfCredit	$ 0us-gaap_ProceedsFromLinesOfCredit
Servicing Fee		12,000five_ServicingFee
Interest expense	700,000us-gaap_InterestExpense
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Revolving credit facility maximum borrowings		20,000,000	20,000,000
Period prior to expiration of term facility for expiration of revolving line of credit (days)		45 days
Increase in revolving credit facility		7,000,000
Issuance of letters of credit		5,000,000
Borrowing base percentage (percent)		90.00%
Deferred financing costs				50.0
Percentage of unused credit facility fee (percent)		0.375%
Servicing fee		12,000
Excess collateral availability percentage (percent)		10.00%
Revolving credit facility collateral amount		3,000,000
Letter of credit fee (percentage)		2.00%
Interest expense		0	0	0
Letters of credit, outstanding amount		0	0	0
Line of credit, remaining borrowing capacity		19,700,000
Letters of credit, borrowing capacity		300,000
Revolving Credit Facility [Member] \| Prime Rate [Member] \| Excess Availability Greater Than Or Equal To 75% [Member]
Debt Instrument [Line Items]
Interest rate on borrowings (percent)		0.75%
Revolving Credit Facility [Member] \| Prime Rate [Member] \| Excess Availability Less Than 75% But Greater Than Or Equal To 33% [Member]
Debt Instrument [Line Items]
Interest rate on borrowings (percent)		1.00%
Revolving Credit Facility [Member] \| Prime Rate [Member] \| Excess Availability Less Than 33% [Member]
Debt Instrument [Line Items]
Interest rate on borrowings (percent)		1.25%
Excess interest on available borrowings		33.00%
Revolving Credit Facility [Member] \| Prime Rate [Member] \| Minimum [Member] \| Excess Availability Greater Than Or Equal To 75% [Member]
Debt Instrument [Line Items]
Excess interest on available borrowings		75.00%
Revolving Credit Facility [Member] \| Prime Rate [Member] \| Minimum [Member] \| Excess Availability Less Than 75% But Greater Than Or Equal To 33% [Member]
Debt Instrument [Line Items]
Excess interest on available borrowings		33.00%
Revolving Credit Facility [Member] \| Prime Rate [Member] \| Maximum [Member] \| Excess Availability Less Than 75% But Greater Than Or Equal To 33% [Member]
Debt Instrument [Line Items]
Excess interest on available borrowings		75.00%
Revolving Credit Facility [Member] \| LIBOR Plus [Member] \| Excess Availability Greater Than Or Equal To 75% [Member]
Debt Instrument [Line Items]
Interest rate on borrowings (percent)		1.75%
Revolving Credit Facility [Member] \| LIBOR Plus [Member] \| Excess Availability Less Than 75% But Greater Than Or Equal To 33% [Member]
Debt Instrument [Line Items]
Interest rate on borrowings (percent)		2.00%
Revolving Credit Facility [Member] \| LIBOR Plus [Member] \| Excess Availability Less Than 33% [Member]
Debt Instrument [Line Items]
Interest rate on borrowings (percent)		2.25%
Revolving Credit Facility [Member] \| LIBOR Plus [Member] \| Minimum [Member] \| Excess Availability Greater Than Or Equal To 75% [Member]
Debt Instrument [Line Items]
Excess interest on available borrowings		75.00%
Revolving Credit Facility [Member] \| LIBOR Plus [Member] \| Minimum [Member] \| Excess Availability Less Than 75% But Greater Than Or Equal To 33% [Member]
Debt Instrument [Line Items]
Excess interest on available borrowings		33.00%
Revolving Credit Facility [Member] \| LIBOR Plus [Member] \| Maximum [Member] \| Excess Availability Less Than 75% But Greater Than Or Equal To 33% [Member]
Debt Instrument [Line Items]
Excess interest on available borrowings		75.00%
Borrowing Capacity Increase Under Certain Conditions [Member]
Debt Instrument [Line Items]
Revolving credit facility maximum borrowings		30,000,000
2012-2013 [Member] \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Increase in revolving credit facility		$ 0