Note 8 - Claims Liabilities (Detail) (USD $) In Millions, unless otherwise specified	Sep. 30, 2012
Self-insurance Retention Levels, Workers' Compensation Claims Per Occurrence	$ 0.5
Self-insurance Retention Levels, Cargo Loss and Damage Claims Per Occurrence	0.05
Self-insurance Retention Levels, Bodily Injury and Property Damage Claims Per Occurrence	1.0
Self-insurance Retention Levels, Medical Benefits Per Plan Participant	$ 0.25

The self-insurance retention levels of bodily injury and property damage claims per occurrence.

No definition available.

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