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Balance Sheet Information | 6 Months Ended
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Mar. 31, 2019
Organization Consolidation And Presentation Of Financial Statements [Abstract] |
Balance Sheet Information |
6. | Balance Sheet Information
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 |
Depreciation expense totaled approximately $18.8 million and $15.6 million for the three months ended March 31, 2019 and 2018, respectively, and $36.9 million and $31.4 million for the six months ended March 31, 2019 and 2018, respectively. The Company recorded amortization of the unfavorable lease liability for approximately $1.5 million and $1.7 million for the three months ended March 31, 2019 and 2018, respectively, and $3.1 million and $3.4 million for the six months ended March 31, 2019 and 2018, respectively, as a reduction to lease expense.

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- Definition The entire disclosure for supplemental balance sheet disclosures, including descriptions and amounts for assets, liabilities, and equity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -URI http://asc.fasb.org/topic&trid=2122208 + Details
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