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Unaudited Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020
CASH FLOWS FROM OPERATING ACTIVITIES: |  |
NET LOSS | $ (51,362) | $ (70,431)
Adjustment for (income) loss from discontinued operations | 31 | (7,493)
Loss from continuing operations | (51,331) | (77,924)
Adjustments to reconcile net loss to net cash provided by operating activities: |  |
Depreciation and amortization | 100,437 | 106,861
Asset impairment charge | 4,363 | 0
Amortization of debt discount and debt issuance costs | 239 | 460
Loss on extinguishment of debt | 60,083 | 0
Provision for credit loss | (112) | (465)
Provision for obsolete inventory | (708) | 216
Stock-based compensation | 6,218 | 7,451
Gain on investment securities | (47,862) | (2,924)
Gain on reimbursement of drilling equipment | (5,254) | (2,191)
Other (gain) loss on sale of assets | 1,029 | (10,145)
Deferred income tax benefit | (17,750) | (15,016)
Other | (3,781) | 1,458
Change in assets and liabilities: |  |
Accounts receivable | (54,641) | (32,586)
Inventories of materials and supplies | (2,507) | 4,612
Prepaid expenses and other | 4,099 | (5,935)
Other noncurrent assets | 3,930 | 1,629
Accounts payable | 36,041 | 9,738
Accrued liabilities | (17,592) | (6,674)
Deferred income tax liability | 69 | 16
Other noncurrent liabilities | (18,675) | 1,818
Net cash used in operating activities from continuing operations | (3,705) | (19,601)
Net cash used in operating activities from discontinued operations | (13) | (3)
Net cash used in operating activities | (3,718) | (19,604)
CASH FLOWS FROM INVESTING ACTIVITIES: |  |
Capital expenditures | (44,014) | (13,985)
Other capital expenditures related to assets held-for-sale | (3,877) | 0
Purchase of short-term investments | (47,083) | (94,151)
Purchase of long-term investments | (9,015) | (1,000)
Proceeds from sale of short-term investments | 37,777 | 37,097
Proceeds from asset sales | 21,483 | 6,836
Net cash used in investing activities | (44,729) | (65,203)
CASH FLOWS FROM FINANCING ACTIVITIES: |  |
Dividends paid | (27,320) | (26,918)
Payments for employee taxes on net settlement of equity awards | (4,113) | (2,119)
Payment of contingent consideration from acquisition of business | (250) | (250)
Payments for early extinguishment of long-term debt | (487,148) | 0
Make-whole premium payment | (56,421) | 0
Share repurchases | (60,358) | 0
Net cash used in financing activities | (635,610) | (29,287)
Net decrease in cash and cash equivalents and restricted cash | (684,057) | (114,094)
Cash and cash equivalents and restricted cash, beginning of period | 936,716 | 536,747
Cash and cash equivalents and restricted cash, end of period | 252,659 | 422,653
Cash paid during the period: |  |
Interest paid | 2,673 | 77
Income tax paid (received), net | 97 | (190)
Payments for operating leases | 3,657 | 3,986
Non-cash operating and investing activities: |  |
Changes in accounts payable and accrued liabilities related to purchases of property, plant and equipment | (1,820) | (369)
Changes in accounts receivable, property, plant and equipment and other noncurrent assets related to the sale of equipment | 0 | 9,290
Cumulative effect adjustment for adoption of ASU No. 2016-13 | $ 0 | $ (1,251)

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- Definition The cash inflow from the sale of 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 12 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3179-108585 + Details
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- Definition Amount of expense (reversal of expense) for expected credit loss on accounts receivable. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -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=123367319&loc=SL114868664-224227 + Details
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- Definition Amount of noncash expense for share-based payment arrangement. + 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=123570139&loc=d3e3602-108585 + Details
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