Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2017

Commitments and Contingencies Disclosure [Abstract]

Schedule of Future Operating Aircraft Leases

As of December 31, 2017, the Company's firm aircraft orders consisted of the following:

	Airbus
	A320ceo	A320neo	A321ceo	Total
2018	5		5	10
2019	1	14		15
2020		16		16
2021		18		18
	6	48	5	59

Schedules of Concentration of Risk, by Risk Factor

The table below sets forth the Company's employee groups and status of the collective bargaining agreements as of December 31, 2017. 

Employee Groups	Representative	Amendable Date	Percentage of Workforce
Pilots	Air Line Pilots Association, International (ALPA)	August 2015	26%
Flight Attendants	Association of Flight Attendants (AFA-CWA)	May 2021	44%
Dispatchers	Transport Workers Union (TWU)	August 2018	1%
Ramp Service Agents	International Association of Machinists and Aerospace Workers (IAMAW)	June 2020	4%