Represents the amortization period of the debt instrument.

No definition available.

Name:	bont_DebtInstrumentAmortizationPeriod
Namespace Prefix:	bont_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the amount of early termination fees.

+ References

No definition available.

+ Details

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

- Definition

Represents the number of distribution centers, which were mortgaged to secure the debt instrument.

+ References

No definition available.

+ Details

Name:	bont_DebtInstrumentMortgagesNumberOfDistributionCenter
Namespace Prefix:	bont_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the number of retail stores, which were mortgaged to secure the debt instrument.

+ References

No definition available.

+ Details

Name:	bont_DebtInstrumentMortgagesNumberOfRetailStores
Namespace Prefix:	bont_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the number of retail stores sold, which were mortgaged to secure the debt instrument.

+ References

No definition available.

+ Details

Name:	bont_DebtInstrumentMortgagesNumberOfRetailStoresSold
Namespace Prefix:	bont_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- 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

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

- Details

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

- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentTerm
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations.

+ References

No definition available.

+ Details

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

- 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_MortgageLoanFacility6.21PercentDueMarch2016Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=bont_MortgageNotesPayable9.62PercentDueJune2016Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

LONG-TERM DEBT (Details 4) (USD $) In Thousands, unless otherwise specified	12 Months Ended	0 Months Ended
	Jan. 31, 2015 Center store	Feb. 03, 2014	Apr. 02, 2012 store	May 17, 1996 store	Mar. 06, 2006
6.21 % Mortgage loan facility secured by land and buildings
Long-term debt
Principal amount of debt issued					$ 260,000
Term of debt instrument	10 years
Number of retail stores which were mortgaged	23
Number of distribution centers which are mortgaged	1
Amortization period	25 years
9.62% Mortgage notes payable secured by land and buildings
Long-term debt
Term of debt instrument				20 years
Number of retail stores which were mortgaged				3
Number of Rochester stores sold			2
Amount of outstanding indebtedness paid		1,072	5,374
Early termination fee		127	1,026
Unamortized deferred financing fees recognized in loss on exchange/extinguishment of debt		$ 26	$ 143