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Balance Sheet Information (Tables) | 9 Months Ended
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Jun. 30, 2024
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, |
|  | 2024 |  |  | 2023 |
Expendable parts and supplies, net: |  |  |  |  |  |
Expendable parts and supplies |  | $ | 42,325 |  |  | $ | 39,630 |
Less: expendable parts warranty |  |  | (6,995 | ) |  |  | (6,295 | )
Less: obsolescence |  |  | (4,678 | ) |  |  | (4,090 | )
|  | $ | 30,652 |  |  | $ | 29,245 |
Property and equipment, net: |  |  |  |  |  |
Aircraft and other flight equipment |  | $ | 750,926 |  |  | $ | 1,039,782 |
Other equipment |  |  | 9,411 |  |  |  | 9,421 |
Total property and equipment |  |  | 760,337 |  |  |  | 1,049,203 |
Less: accumulated depreciation |  |  | (255,214 | ) |  |  | (351,181 | )
|  | $ | 505,123 |  |  | $ | 698,022 |
Other assets: |  |  |  |  |  |
Investments in equity securities |  | $ | 300 |  |  | $ | 20,320 |
Lease incentives |  |  | 847 |  |  |  | 954 |
Contract asset |  |  | 6,937 |  |  |  | 8,756 |
Other |  |  | 485 |  |  |  | 516 |
|  | $ | 8,569 |  |  | $ | 30,546 |
Other accrued expenses: |  |  |  |  |  |
Accrued property taxes |  | $ | 3,896 |  |  | $ | 5,281 |
Accrued interest |  |  | 4,416 |  |  |  | 3,447 |
Accrued vacation |  |  | 7,357 |  |  |  | 6,763 |
Accrued lodging |  |  | 3,111 |  |  |  | 3,984 |
Accrued maintenance |  |  | 1,808 |  |  |  | 2,117 |
Accrued simulator costs |  |  | 1,512 |  |  |  | 1,006 |
Accrued employee benefits |  |  | 1,845 |  |  |  | 1,450 |
Accrued fleet operating expense |  |  | 2,217 |  |  |  | 650 |
Other |  |  | 6,319 |  |  |  | 2,303 |
|  | $ | 32,481 |  |  | $ | 27,001 |
Other noncurrent liabilities: |  |  |  |  |  |
Warrant liabilities |  | $ | 25,225 |  |  | $ | 25,225 |
Lease incentive obligations |  |  | 1,050 |  |  |  | 1,050 |
Long-term employee benefits |  |  | 432 |  |  |  | 429 |
Other |  |  | 1,819 |  |  |  | 1,818 |
|  | $ | 28,526 |  |  | $ | 28,522 |

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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 -Name Regulation S-X (SX) -Number 210 -Section 12 -Subsection 04 -Paragraph a -Publisher SEC Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 235 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 3 -Subparagraph (SX 210.12-04(a)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480678/235-10-S99-3 + Details
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