Labor and Legal Proceedings - Additional Information (Details) - USD ($) $ in Millions	1 Months Ended	6 Months Ended
	Mar. 31, 2022	Jun. 30, 2022	Dec. 31, 2021
Loss Contingencies [Line Items]
Collective bargaining agreement period	5 years
Brazilian Customs Claim [Member]
Loss Contingencies [Line Items]
Brazilian claims in the aggregate		$ 1.9
Amounts on deposit for Brazilian claims included in deferred costs and other assets		$ 3.6	$ 3.2
Atlas and Polar Dispatchers [Member]
Loss Contingencies [Line Items]
Collective bargaining agreement period		4 years
Atlas Pilots [Member]
Loss Contingencies [Line Items]
Collective bargaining agreement period		5 years
Southern Air [Member]
Loss Contingencies [Line Items]
Collective bargaining agreement period		4 years