Commitments and Contingencies (Details 2)	12 Months Ended
	Dec. 31, 2015 USD ($) employee	Dec. 31, 2014 USD ($)	Dec. 31, 2013
Concentration Risk and Significant Customers
Allowance for doubtful accounts | $	$ 187,300	$ 326,600
Number of full-time equivalent employees	18,300
Revenue from Rights Concentration Risk | Customer Concentration Risk | Delta, United, and Continental Combined
Concentration Risk and Significant Customers
Concentration risk (as a percent)	86.90%	88.70%	91.60%
Workforce Subject to Collective Bargaining Arrangements | Labor Force Concentration Risk
Concentration Risk and Significant Customers
Concentration risk (as a percent)	38.00%
Workforce Subject to Collective Bargaining Arrangements | Labor Force Concentration Risk | Atlantic Southeast Pilots
Concentration Risk and Significant Customers
Approximate Number of Active Employees	1,491
Workforce Subject to Collective Bargaining Arrangements | Labor Force Concentration Risk | Atlantic Southeast Flight Attendants
Concentration Risk and Significant Customers
Approximate Number of Active Employees	1,031
Workforce Subject to Collective Bargaining Arrangements | Labor Force Concentration Risk | Atlantic Southeast Flight Controllers
Concentration Risk and Significant Customers
Approximate Number of Active Employees	36
Workforce Subject to Collective Bargaining Arrangements | Labor Force Concentration Risk | Atlantic Southeast Mechanics
Concentration Risk and Significant Customers
Approximate Number of Active Employees	364
Workforce Subject to Collective Bargaining Arrangements | Labor Force Concentration Risk | Atlantic Southeast Stock Clerks
Concentration Risk and Significant Customers
Approximate Number of Active Employees	73
Workforce Subject to Collective Bargaining Arrangements | Labor Force Concentration Risk | ExpressJet Delaware Pilots
Concentration Risk and Significant Customers
Approximate Number of Active Employees	2,107
Workforce Subject to Collective Bargaining Arrangements | Labor Force Concentration Risk | ExpressJet Delaware Flight Attendants
Concentration Risk and Significant Customers
Approximate Number of Active Employees	993
Workforce Subject to Collective Bargaining Arrangements | Labor Force Concentration Risk | ExpressJet Delaware Mechanics
Concentration Risk and Significant Customers
Approximate Number of Active Employees	711
Workforce Subject to Collective Bargaining Arrangements | Labor Force Concentration Risk | ExpressJet Delaware Dispatchers
Concentration Risk and Significant Customers
Approximate Number of Active Employees	53
Workforce Subject to Collective Bargaining Arrangements | Labor Force Concentration Risk | ExpressJet Delaware Stock Clerks
Concentration Risk and Significant Customers
Approximate Number of Active Employees	96