Quarterly report pursuant to Section 13 or 15(d)

FUEL DERIVATIVE CONTRACTS Fair value Fuel Derivative Contracts (Details)

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FUEL DERIVATIVE CONTRACTS Fair value Fuel Derivative Contracts (Details) (Subsequent Event [Member], Commodity Contract [Member])
Nov. 21, 2013
gal
Subsequent Event [Member] | Commodity Contract [Member]
 
Derivative [Line Items]  
Nonmonetary notional amount 700,000
Diesel fuel need in derivative contracts (in hundredths) 20.00%