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

No definition available.

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 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=34725769&loc=d3e28878-108400

Reference 2: 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

+ Details

Name:	us-gaap_DebtInstrumentFaceAmount
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 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

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ 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

Name:	us-gaap_WriteOffOfDeferredDebtIssuanceCost
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:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=bont_SeniorSecuredNotes8.00PercentDue2021Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

LONG-TERM DEBT - Senior Notes (Details) - USD ($) $ in Thousands	Jun. 27, 2013	Feb. 22, 2013	Jun. 04, 2012	Jan. 30, 2016	Jan. 31, 2015	May. 28, 2013	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 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
Amount of debt repurchase	$ 85,000					187,706
Unamortized deferred financing fees recognized in loss on extinguishment of debt	$ 3,937
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