5. Schedule of gains/losses on affiliated partnerships(Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	9 Months Ended
Jul. 04, 2012	Jul. 06, 2011	Jul. 04, 2012	Jul. 06, 2011
Schedule of investments of Consolidated Affiliated Partnerships
Net unrealized gains/losses	$ 401	$ 482	$ 2,782	$ 861
Net realized gains/losses from sale	$ 100	$ 749	$ 1,685	$ 3,316

This item represents the net unrealized gains for securities, at a point in time, which are categorized neither as held-to-maturity nor trading securities.

No definition available.

Name:	BH_NetUnrealizedGainsLossesOfConsolidatedAffiliatedPartnerships
Namespace Prefix:	BH_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration