Note 9 - Business Combination (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 27, 2011
Business Acquisition, Purchase Price Allocation, Net Tangible Assets	$ 11,041

The amount of acquisition cost of a business combination allocated to net tangible assets.

No definition available.

Name:	us-gaap_BusinessAcquisitionPurchasePriceAllocationNetTangibleAssets
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant