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Special Charges and Credits	12 Months Ended
Special Charges and Credits	Dec. 31, 2014
Special Charges and Credits [Abstract]
Special Charges and Credits	Special Charges and Credits Slot Transaction and Restructuring In 2012, the Company sold four permanent air carrier slots at Ronald Reagan National Airport (DCA) to another airline for $9.1 million. The Company recognized the $9.1 million gain within special charges (credits) in the third quarter of 2012, the period in which the FAA operating restriction lapsed and written confirmation of the slot transfer was received by the buyer from the FAA.