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Balance Sheet Information (Tables) | 9 Months Ended
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Jun. 30, 2022
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 consisted of the following (in thousands):
|  | June 30, |  |  | September 30, |
|  | 2022 |  |  | 2021 |
Expendable parts and supplies, net: |  |  |  |  |  |  |  |
Expendable parts and supplies |  | $ | 31,437 |  |  | $ | 29,297 |
Less: obsolescence and other |  |  | (5,096 | ) |  |  | (4,830 | )
|  | $ | 26,341 |  |  | $ | 24,467 |
Prepaid expenses and other current assets: |  |  |  |  |  |  |  |
Prepaid aviation insurance |  | $ | 2,355 |  |  | $ | 2,171 |
Lease incentives |  |  | 1,875 |  |  |  | 1,445 |
Other |  |  | 3,004 |  |  |  | 3,269 |
|  | $ | 7,234 |  |  | $ | 6,885 |
Property and equipment, net: |  |  |  |  |  |  |  |
Aircraft and other flight equipment |  | $ | 1,533,992 |  |  | $ | 1,611,544 |
Other equipment |  |  | 5,399 |  |  |  | 4,934 |
Leasehold improvements |  |  | 2,776 |  |  |  | 2,776 |
Vehicles |  |  | 993 |  |  |  | 1,184 |
Building |  |  | 699 |  |  |  | 699 |
Furniture and fixtures |  |  | 298 |  |  |  | 300 |
Total property and equipment |  |  | 1,544,157 |  |  |  | 1,621,437 |
Less: accumulated depreciation |  |  | (471,331 | ) |  |  | (469,546 | )
|  | $ | 1,072,826 |  |  | $ | 1,151,891 |
Other assets: |  |  |  |  |  |  |  |
Investments in equity securities |  | $ | 16,586 |  |  | $ | 25,149 |
Lease incentives |  |  | 13,085 |  |  |  | 10,957 |
Other |  |  | 15 |  |  |  | 15 |
|  | $ | 29,686 |  |  | $ | 36,121 |
Other accrued expenses: |  |  |  |  |  |  |  |
Accrued property taxes |  | $ | 4,751 |  |  | $ | 8,783 |
Accrued interest |  |  | 4,485 |  |  |  | 2,565 |
Accrued vacation |  |  | 5,109 |  |  |  | 5,936 |
Other |  |  | 17,977 |  |  |  | 16,373 |
|  | $ | 32,322 |  |  | $ | 33,657 |
Other noncurrent liabilities: |  |  |  |  |  |  |  |
Warrant liabilities |  | $ | 25,225 |  |  | $ | 21,964 |
Lease incentive obligations |  |  | 6,492 |  |  |  | 6,358 |
Other |  |  | 5,254 |  |  |  | 6,269 |
|  | $ | 36,971 |  |  | $ | 34,591 |

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- Definition Tabular disclosure of condensed balance sheet, including, but not limited to, balance sheets of consolidated entities and consolidation eliminations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 12 -Paragraph (a) -Subsection 04 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 3 -Subparagraph (SX 210.12-04(a)) -URI https://asc.fasb.org/extlink&oid=120395691&loc=d3e24072-122690 + Details
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