Summary of Financial Statement Preparation and Significant Accounting Policies (Tables)

3 Months Ended

Mar. 31, 2021

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Property, Plant and Equipment

Property and equipment, to be held and used, is summarized as follows (in thousands):

	March 31,		December 31,
	2021		2020
Flight equipment	$	2,985,850	$	2,856,142
Ground equipment	67,332		65,857
Leasehold improvements, facilities and office equipment	37,283		36,193
Aircraft modifications and projects in progress	206,977		231,451
	3,297,442		3,189,643
Accumulated depreciation	(1,310,360)		(1,249,867)
Property and equipment, net	$	1,987,082	$	1,939,776