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FUEL DERIVATIVE CONTRACTS (Details) (USD $) In Millions, unless otherwise specified	Jul. 30, 2011
Derivative [Line Items]
Gallons of Diesel Fuel in the Fuel derivatives contracts for estimated fuel needs August 2011 through July 2012 (in gallons)	5.6
Fuel needs percentage from August 2011 through July 2012 hedged by fuel derivative contracts (in hundredths)	50.00%
Derivative fair value	$ 0.4

Fair value of derivative liability, presented on a gross basis even when the derivative instrument is subject to master netting arrangements and qualifies for net presentation in the statement of financial position.

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