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Commitments and Contingencies (Tables)
 3 Months Ended
Mar. 31, 2023
Commitments and Contingencies Disclosure [Abstract]  
Schedule of Operating Lease Maturities As of March 31, 2023, the maturities of operating lease liabilities are as follows (in thousands):
Operating Leases
2023$18,975 
202419,886 
202512,840 
20268,423 
20274,194 
2028 and beyond8,650 
Total undiscounted cash payments72,968 
Less: amount representing interest(5,717)
Present value of future minimum lease payments67,251 
Less: current obligations under leases22,524 
Long-term lease obligation$44,727 
Schedule of Employees Under Collective Bargaining Agreements
As of March 31, 2023, the flight crewmember employees of ABX, ATI and OAI and flight attendant employees of ATI and OAI were represented by the labor unions listed below:
AirlineLabor Agreement UnitPercentage of
the Company’s
Employees
ABXInternational Brotherhood of Teamsters5.8%
ATIAir Line Pilots Association10.1%
OAIInternational Brotherhood of Teamsters6.9%
ATIAssociation of Flight Attendants0.7%
OAIAssociation of Flight Attendants7.7%