Represents the amount of debt exchange fees.

No definition available.

Name:	bont_DebtInstrumentExchangeFee
Namespace Prefix:	bont_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Represents the principal value of debt instruments for which its holders has given consent for exchange.

+ References

No definition available.

+ Details

Name:	bont_DebtInstrumentExchangeOfferConsentReceivedFromHoldersOfPrincipalAmount
Namespace Prefix:	bont_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The principal amount of the outstanding debt instrument for which the entity commenced tender offers.

+ References

No definition available.

+ Details

Name:	bont_DebtInstrumentTenderOfferPrincipalAmount
Namespace Prefix:	bont_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 55

-Paragraph 8

-URI http://asc.fasb.org/extlink&oid=34725769&loc=d3e28878-108400

+ Details

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

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

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 210.5-02.22(a)(1))

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

+ Details

Name:	us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Details

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

- Definition

Face (par) amount of the original debt instrument that was repurchased.

+ References

No definition available.

+ Details

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

- Definition

Write-off of amounts previously capitalized as debt issuance cost in an extinguishment of debt.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.8)

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

+ Details

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

- Details

Name:	us-gaap_LongtermDebtTypeAxis=bont_SeniorNotes10.25PercentDue2014Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=bont_SeniorSecuredNotes10.625PercentDue2017Member
Namespace Prefix:
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- Details

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LONG-TERM DEBT (Details 3) (USD $) In Thousands, unless otherwise specified	0 Months Ended
	Feb. 22, 2013	Jun. 04, 2012	Jun. 27, 2013	Feb. 01, 2014	May 28, 2013	Jan. 31, 2015	May 13, 2013
10.25% Senior notes due 2014
Long-term debt
Stated interest rate (as a percent)				10.25%
Consent received from holders of principal amount for exchange		$ 330,017
Amount of debt repurchase	65,000				30,059
Unamortized deferred financing fees recognized in loss on exchange/extinguishment of debt	360
10.625% Second lien senior secured notes - mature on July 15, 2017
Long-term debt
Stated interest rate (as a percent)						10.625%
Principal amount of debt issued		329,998
Exchange fees		7,114
Amount of debt repurchase			85,000		187,706
Unamortized deferred financing fees recognized in loss on exchange/extinguishment of debt			3,937
10.625% Second lien senior secured notes - mature on July 15, 2017 \| Maximum
Long-term debt
Aggregate principal amount of outstanding debt for which the entity commenced tender offers							223,000
8.00% Second lien senior secured notes - mature on June 15, 2021
Long-term debt
Stated interest rate (as a percent)						8.00%
Principal amount of debt issued					$ 350,000