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Organization and Operations - Additional Information (Detail1) $ in Thousands								3 Months Ended				6 Months Ended
	Jul. 31, 2024 AirCraft	Jun. 30, 2024 AirCraft	May 31, 2024 AirCraft	May 21, 2024 AirCraft	Apr. 30, 2024 AirCraft	Apr. 22, 2024 USD ($)	Apr. 01, 2024 USD ($) Engine Airframes	Mar. 31, 2024 USD ($)	Dec. 31, 2023 USD ($) Airframes Engine	Mar. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Mar. 31, 2024 USD ($) Airframes Engine AirCraft	Mar. 31, 2023 USD ($)
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Net Income (Loss)								$ 11,660	$ (57,850)	$ (35,122)	$ (9,090)	$ (46,190)	$ (44,211)
Non-cash impairment charge												$ 500
Number of spare engines classified as held for sale \| Engine												48
Impact of Pilot Shortage and Transition of Operations to United [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Percentage of increased hourly payment for captains												118.00%
Percentage of increased hourly payment for new hires												172.00%
Net Income (Loss)												$ 46,200
Non-cash impairment charge												$ 43,000
Impact of Pilot Shortage and Transition of Operations to United [Member] \| RASPRO Aircraft Lease Agreement [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Number of engines \| Engine												30
Number of airframes without engines \| Airframes												15
Buyout price												$ 50,300
Net cash from aircraft and equipment purchase agreement									$ (12,100)
Impact of Pilot Shortage and Transition of Operations to United [Member] \| RASPRO Aircraft Lease Agreement [Member] \| Subsequent Event [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Number of engines \| Engine							15
Number of airframes without engines \| Airframes							6
Proceeds from sale of aircraft							$ 16,400
Impact of Pilot Shortage and Transition of Operations to United [Member] \| RASPRO Aircraft Lease Agreement One [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Number of engines \| Engine									30
Buyout pricing									$ 19,500
Impact of Pilot Shortage and Transition of Operations to United [Member] \| RASPRO Aircraft Lease Agreement Two [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Number of airframes without engines \| Airframes									15
Buyout pricing									$ 18,800
Impact of Pilot Shortage and Transition of Operations to United [Member] \| RASPRO Binding Memorandum [Member] \| Subsequent Event [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Buyout price						$ 50,300
CRJ-900 Aircraft [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Number of aircraft classified as assets held for sale \| AirCraft												11
Number of airframes without engines \| Airframes									11			11
Number of aircraft to be removed \| AirCraft												2
CRJ-900 Aircraft [Member] \| Subsequent Event [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Number of aircraft to be removed \| AirCraft			1	1	2
CRJ-900 Aircraft [Member] \| Forecast [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Number of aircraft to be removed \| AirCraft	2	2
CRJ-900 Aircraft [Member] \| Purchase agreement [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Number of aircraft to be removed \| AirCraft												10