Note 14 - Segment Reporting (Details Textual) $ in Millions	3 Months Ended	6 Months Ended
Feb. 28, 2015 USD ($)	Feb. 27, 2016
Number of Operating Segments		6
Number of Reportable Segments		5
Accrual for Environmental Loss Contingencies, Period Increase (Decrease)	$ 3.6

Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

No definition available.

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Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration