CREDIT CARD PROGRAM AGREEMENT (Details) (USD $) In Thousands, unless otherwise specified	1 Months Ended
Jul. 28, 2012
CREDIT CARD PROGRAM AGREEMENT
Signing bonus recorded as deferred income	$ 50,000
Deferred income amortization period	7 years

Represents the period of amortization of deferred income, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

No definition available.

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