Commitments and Contingencies (Details 3) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Commitments and Contingencies
Allowance for doubtful accounts	$ 94,000	$ 94,000
Concentration Risk and Significant Customers
Number of full-time equivalent employees	18,358
Atlantic southeast pilots and expressjet delaware pilots
Concentration Risk and Significant Customers
Number of employee group for joint bargaining agreement	2
Total revenues | Significant Customers | Delta, United, and Continental Combined
Concentration Risk and Significant Customers
Concentration risk (as a percent)	91.60%	94.80%	97.60%
Full-time equivalent employees | Employees represented by unions
Concentration Risk and Significant Customers
Concentration risk (as a percent)	49.00%
Full-time equivalent employees | Employees represented by unions | Atlantic Southeast Pilots
Concentration Risk and Significant Customers
Approximate Number of Active Employees	1,800
Full-time equivalent employees | Employees represented by unions | Atlantic Southeast Flight Attendants
Concentration Risk and Significant Customers
Approximate Number of Active Employees	1,075
Full-time equivalent employees | Employees represented by unions | Atlantic Southeast Flight Controllers
Concentration Risk and Significant Customers
Approximate Number of Active Employees	60
Full-time equivalent employees | Employees represented by unions | Atlantic Southeast Mechanics
Concentration Risk and Significant Customers
Approximate Number of Active Employees	700
Full-time equivalent employees | Employees represented by unions | Atlantic Southeast Stock Clerks
Concentration Risk and Significant Customers
Approximate Number of Active Employees	70
Full-time equivalent employees | Employees represented by unions | ExpressJet Delaware Pilots
Concentration Risk and Significant Customers
Approximate Number of Active Employees	2,900
Full-time equivalent employees | Employees represented by unions | ExpressJet Delaware Flight Attendants
Concentration Risk and Significant Customers
Approximate Number of Active Employees	1,200
Full-time equivalent employees | Employees represented by unions | ExpressJet Delaware Mechanics
Concentration Risk and Significant Customers
Approximate Number of Active Employees	1,000
Full-time equivalent employees | Employees represented by unions | ExpressJet Delaware Dispatchers
Concentration Risk and Significant Customers
Approximate Number of Active Employees	85
Full-time equivalent employees | Employees represented by unions | ExpressJet Delaware Stock Clerks
Concentration Risk and Significant Customers
Approximate Number of Active Employees	100