Balance Sheet Information (Tables)

6 Months Ended

Mar. 31, 2019

Organization Consolidation And Presentation Of Financial Statements [Abstract]

Summary of Certain Significant Amounts Included in Condensed Consolidated Balance Sheet

Certain significant amounts included in the Company's condensed consolidated balance sheet as of March 31, 2019 and September 30, 2018, consisted of the following (in thousands):

	March 31,			September 30,
	2019			2018
Expendable parts and supplies, net:
Expendable parts and supplies	$	22,802		$	18,907
Less: obsolescence and other		(3,573	)		(3,249	)
	$	19,229		$	15,658

Prepaid expenses and other current assets:
Prepaid aircraft rent	$	36,736		$	30,267
Unutilized manufacturer credits		3,000			4,500
Deferred offering and reimbursed costs		2,242			1,945
Other		5,473			4,202
	$	47,451		$	40,914
Property and equipment, net:
Aircraft and other flight equipment substantially pledged	$	1,522,750		$	1,502,940
Other equipment		4,631			3,721
Leasehold improvements		2,836			2,754
Vehicles		898			692
Building		699			699
Furniture and fixtures		287			287
Total property and equipment		1,532,101			1,511,093
Less: accumulated depreciation		(294,486	)		(260,264	)
	$	1,237,615		$	1,250,829

Other accrued expenses:
Accrued property taxes	$	5,415		$	6,981
Accrued interest		4,922			6,118
Accrued vacation		5,596			5,470
Accrued wheels, brakes and tires		2,479			1,452
Other		8,932			9,675
	$	27,344		$	29,696