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

3 Months Ended

Mar. 31, 2017

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, 2017			December 31, 2016
Flight equipment	$	1,546,545		$	1,541,872
Ground equipment	49,348			49,229
Leasehold improvements, facilities and office equipment	28,081			27,364
Aircraft modifications and projects in progress	188,392			113,518
	1,812,366			1,731,983
Accumulated depreciation	(754,489		)	(730,991		)
Property and equipment, net	$	1,057,877		$	1,000,992