Represents the amount of early termination fees paid upon prepayment of debt.

No definition available.

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

- Definition

Represents number retail of mortgage facilities eliminated.

+ References

No definition available.

+ Details

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

- Definition

Number of optional renewal terms under sale lease-back arrangement.

+ References

No definition available.

+ Details

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

- Definition

Represents number of properties sold under the sale lease-back transaction.

+ References

No definition available.

+ Details

Name:	bont_SaleLeasebackTransactionNumberOfPropertiesSold
Namespace Prefix:	bont_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Renewal term of lease under sale lease-back arrangement, in PnYnMnDTnHnMnS' format, for example 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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

- Definition

Term of lease under sale lease-back arrangement, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

Name:	bont_SaleLeasebackTransactionTermOfLease
Namespace Prefix:	bont_
Data Type:	xbrli:durationItemType
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 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=64930739&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=64930785&loc=d3e28551-108399

+ Details

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

Gross amount of debt extinguished.

+ References

No definition available.

+ Details

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

- Definition

Amount of cash inflow before closing and debt issuance costs received by a seller-lessee in a sale-leaseback recognized in investing activities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 40
-Section 55
-Paragraph 52
-URI http://asc.fasb.org/extlink&oid=28365400&loc=d3e51843-112757

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 40
-Section 55
-Paragraph 50
-URI http://asc.fasb.org/extlink&oid=28365400&loc=d3e51831-112757

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 40
-Section 55
-Paragraph 51
-URI http://asc.fasb.org/extlink&oid=28365400&loc=d3e51840-112757

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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=63488584&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_DebtInstrumentAxis=bont_MortgageLoanFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=bont_MortgageNotesPayableRemainingRochesterStoreMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

LONG-TERM DEBT - Mortgage Facilities (Details) $ in Thousands	Jan. 15, 2016 USD ($)	Jun. 26, 2015 USD ($) property facility item	Feb. 03, 2014 USD ($)	Mar. 06, 2006 USD ($)
Long-term debt
Number of properties sold \| property		6
Proceeds from sale of properties		$ 84,000
Lease term		20 years
Number of optional renewal terms \| item		3
Renewal term of lease		10 years
Mortgage Loan Facility secured by land and buildings
Long-term debt
Principal amount of debt issued				$ 260,000
Repayment of principal balance	$ 102,371	$ 104,538
Early termination fee	1,307	4,741
Unamortized deferred financing fees recognized in loss on extinguishment of debt	$ 39	$ 121
Number of retail mortgage facilities eliminated \| facility		11
Mortgage notes payable remaining Rochester store
Long-term debt
Repayment of principal balance			$ 1,072
Early termination fee			127
Unamortized deferred financing fees recognized in loss on extinguishment of debt			$ 26