6. Schedule of assets held for sale in numbers (Details)	Jul. 04, 2012
Schedule Of Assets Held For Sale In Numbers Details
Number of office buildings included in assets held for sale	1
Number of restaurants included in assets held for sale	4
Number of land parcels included in assets held for sale	7

Number of land parcels included in current assets held for sale.

No definition available.

Name:	BH_NumberOfLandParcelsHeldForSale
Namespace Prefix:	BH_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant