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

6 Months Ended

Jun. 30, 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):

	June 30, 2017			December 31, 2016
Flight equipment	$	1,633,793		$	1,541,872
Ground equipment	50,734			49,229
Leasehold improvements, facilities and office equipment	27,382			27,364
Aircraft modifications and projects in progress	143,780			113,518
	1,855,689			1,731,983
Accumulated depreciation	(781,450		)	(730,991		)
Property and equipment, net	$	1,074,239		$	1,000,992