Passenger and Ground Handling Revenue (Details) (USD $) In Millions, unless otherwise specified	1 Months Ended	3 Months Ended								1 Months Ended			1 Months Ended
	Dec. 31, 2007 Delta Connection Agreements	Mar. 31, 2013 Delta Connection Agreements agreement item aircraft	Dec. 31, 2012 Delta Connection Agreements aircraft	Mar. 31, 2013 Delta Connection Agreements CRJ 200 aircraft	Dec. 31, 2012 Delta Connection Agreements CRJ 200 aircraft	Mar. 31, 2013 Delta Connection Agreements CRJ 700s aircraft	Dec. 31, 2012 Delta Connection Agreements CRJ 700s aircraft	Mar. 31, 2013 Delta Connection Agreements CRJ 900 aircraft	Dec. 31, 2012 Delta Connection Agreements CRJ 900 aircraft	Feb. 28, 2010 United Express Agreements	Feb. 10, 2010 United Express Agreements CRJ 200 aircraft	Nov. 12, 2010 ExpressJet CPA aircraft	Sep. 30, 2012 American Agreement	Feb. 14, 2013 American Agreement CRJ 200 ExpressJet aircraft	Nov. 14, 2012 American Agreement CRJ 200 SkyWest Airlines, Inc. aircraft
Agreements with other airlines
Term of agreement		15 years								5 years			4 years
Number of agreements for cross-termination rights		2
Number of years after which the rate resets		5 years
Anniversary of agreements which contractual rates shall not exceed the second lowest rate for all carriers		5 years
Contractual rate shall not exceed this number of rates from other carriers		2
Number of aircraft operated			34				5		29		14	229			12
Number of aircraft terminated					66
Number of aircraft delivered						5		21
Number of aircraft subleased				41
Number of aircraft anticipate to operate														11
Amount of receivables withheld from weekly scheduled wire payments to SkyWest Airlines and Atlantic Southeast	$ 25