Nature of Operations and Summary of Significant Accounting Policies (Details 5)	12 Months Ended
	Dec. 31, 2015
New aircraft
Property and Equipment
Depreciable Life	18 years
Residual Value (as a percent)	30.00%
Used Aircraft and rotable spares | Minimum
Property and Equipment
Depreciable Life	3 years
Residual Value (as a percent)	0.00%
Used Aircraft and rotable spares | Maximum
Property and Equipment
Depreciable Life	10 years
Residual Value (as a percent)	30.00%
Ground equipment
Property and Equipment
Residual Value (as a percent)	0.00%
Ground equipment | Minimum
Property and Equipment
Depreciable Life	5 years
Ground equipment | Maximum
Property and Equipment
Depreciable Life	10 years
Office Equipment
Property and Equipment
Residual Value (as a percent)	0.00%
Office Equipment | Minimum
Property and Equipment
Depreciable Life	5 years
Office Equipment | Maximum
Property and Equipment
Depreciable Life	7 years
Leasehold Improvements
Property and Equipment
Residual Value (as a percent)	0.00%
Leasehold Improvements | Minimum
Property and Equipment
Depreciable Life	15 years
Buildings
Property and Equipment
Residual Value (as a percent)	0.00%
Buildings | Minimum
Property and Equipment
Depreciable Life	20 years
Buildings | Maximum
Property and Equipment
Depreciable Life	39 years 6 months