Estimated Fair Value of Assets Acquired (Parenthetical) (Detail) (Buffalo Brand)	Feb. 28, 2013
Buffalo Brand
Business Acquisition [Line Items]
Non controlling interest	49.00%

The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

No definition available.

Name:	us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant