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Consolidated Statements of Cash Flows - USD ($) | 12 Months Ended
--- | ---
Sep. 30, 2018 | Sep. 30, 2017 | Sep. 30, 2016
Cash Flows From Operating Activities: |  |  |
Net income | $ 33,255,000 | $ 32,828,000 | $ 14,920,000
Adjustments to reconcile net income to net cash flows provided by operating activities: |  |  |
Depreciation and amortization | 65,031,000 | 61,048,000 | 46,020,000
Stock compensation expense | 12,929,000 | 1,288,000 | 1,546,000
Deferred income taxes | (17,874,000) | 20,515,000 | 9,513,000
Amortization of unfavorable lease liabilities and deferred credits | (11,035,000) | (10,626,000) | (9,626,000)
non-interest-bearing subordinated notes | 4,606,000 | 2,689,000 | 1,990,000
Loss on disposal of assets | 307,000 | 533,000 | 428,000
Provision for obsolete expendable parts and supplies | 200,000 | 419,000 | 41,000
Lease termination | 15,109,000 |  |
Provision for doubtful accounts |  | (86,000) | 575,000
Changes in assets and liabilities: |  |  |
Receivables | (5,437,000) | 530,000 | 1,908,000
Expendable parts and supplies | (744,000) | (3,379,000) | (1,675,000)
Prepaid expenses and other current assets | 7,584,000 | (17,243,000) | 1,554,000
Accounts payable | 2,427,000 | (17,336,000) | 29,673,000
Accrued liabilities | 12,581,000 | 3,547,000 | 7,625,000
Net cash provided by operating activities | 118,939,000 | 74,727,000 | 104,492,000
Cash Flows Used In Investing Activities: |  |  |
Capital expenditures | (117,989,000) | (84,500,000) | (490,081,000)
Purchases of investment securities | (19,921,000) |  |
Proceeds from sale of rotable spare parts |  | 18,000 | 196,000
Withdrawal (deposit) of restricted cash | (264,000) | (46,000) | 807,000
Net returns (payments) of lease and equipment deposits | (653,000) | 406,000 | (2,049,000)
Net cash used in investing activities | (138,827,000) | (84,122,000) | (491,127,000)
Cash Flows From Financing Activities: |  |  |
Proceeds from long-term debt | 187,703,000 | 185,912,000 | 452,841,000
Principal payments on long-term debt and capital leases | (222,153,000) | (152,995,000) | (75,496,000)
Debt financing costs | (5,852,000) | (3,377,000) | (10,086,000)
Proceeds from issuance of common stock | 124,246,000 |  |
Stock issuance costs | (12,540,000) |  |
Repurchase of stock | (4,993,000) | (1,043,000) | (1,411,000)
Net cash provided by financing activities | 66,411,000 | 28,497,000 | 365,848,000
Net change in cash and cash equivalents | 46,523,000 | 19,102,000 | (20,787,000)
Cash and cash equivalents at beginning of period | 56,788,000 | 37,686,000 | 58,473,000
Cash and cash equivalents at end of period | 103,311,000 | 56,788,000 | 37,686,000
Supplemental cash flow information |  |  |
Cash paid for interest | 50,672,000 | 43,798,000 | 28,693,000
Cash paid for income taxes - net | 385,000 | 332,000 | 196,000
Supplemental non-cash investing and financing activities |  |  |
Accrued capital expenditures | 16,677,000 | $ 9,533,000 | $ 418,000
Acquisition of capital leases | $ 10,473,000 |  |

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- Definition The cash outflow for cost incurred directly with the issuance of an equity security. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3291-108585 + Details
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- Definition Amount of cash outflow for purchase of marketable security. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=109979856&loc=d3e26853-111562 + Details
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- Definition The cash outflow for purchases of and capital improvements on property, plant and equipment (capital expenditures), software, and other intangible assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3213-108585 + Details
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- Definition The cash inflow from the additional capital contribution to the entity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3255-108585 + Details
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- Definition The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3255-108585 + Details
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- Definition Amount of expense related to write-down of receivables to the amount expected to be collected. Includes, but is not limited to, accounts receivable and notes receivable. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.5) -URI http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=82913815&loc=SL49130534-203044 + Details
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- Definition The cash outflow associated with security instruments that either represent a creditor or an ownership relationship with the holder of the investment security with a maturity of beyond one year or normal operating cycle, if longer. Includes repayments of (a) debt, (b) capital lease obligations, (c) mandatory redeemable capital securities, and (d) any combination of (a), (b), or (c). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a),(b) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3291-108585 + Details
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- Definition The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3602-108585 + Details
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- References No definition available. + Details
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