Balance Sheet Information (Tables)

3 Months Ended

Dec. 31, 2021

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 condensed consolidated balance sheets as of December 31, 2021 and September 30, 2021, consisted of the following (in thousands):

	December 31,			September 30,
	2021			2021
Expendable parts and supplies, net:
Expendable parts and supplies	$	30,877		$	29,297
Less: obsolescence and other		(5,671	)		(4,830	)
	$	25,206		$	24,467

Prepaid expenses and other current assets:
Prepaid aviation insurance	$	140		$	2,171
Lease incentives		1,715			1,445
Other		2,633			3,269
	$	4,488		$	6,885
Property and equipment, net:
Aircraft and other flight equipment	$	1,637,154		$	1,611,544
Other equipment		4,971			4,934
Leasehold improvements		2,776			2,776
Vehicles		1,184			1,184
Building		699			699
Furniture and fixtures		292			300
Total property and equipment		1,647,076			1,621,437
Less: accumulated depreciation		(489,154	)		(469,546	)
	$	1,157,922		$	1,151,891
Other assets:
Investments in equity securities	$	19,005		$	25,149
Lease incentives		12,705			10,957
Other		42			15
	$	31,752		$	36,121
Other accrued expenses:
Accrued property taxes	$	8,598		$	8,783
Accrued interest		4,481			2,565
Accrued vacation		5,829			5,936
Other		17,375			16,373
	$	36,283		$	33,657
Other noncurrent liabilities:
Warrant liabilities	$	22,064		$	21,964
Lease incentive obligations		7,289			6,358
Other		4,253			6,269
	$	33,606		$	34,591