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UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands | 9 Months Ended
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Jun. 30, 2022 | Jun. 30, 2021
CASH FLOWS FROM OPERATING ACTIVITIES: |  |
NET INCOME (LOSS) | $ (38,586) | $ (246,989)
Adjustment for (income) loss from discontinued operations | 106 | (10,936)
Loss from continuing operations | (38,480) | (257,925)
Adjustments to reconcile net loss to net cash provided by operating activities: |  |
Depreciation and amortization | 304,115 | 317,771
Asset impairment charge | 4,363 | 56,414
Amortization of debt discount and debt issuance costs | 880 | 994
Loss on extinguishment of debt | 60,083 | 0
Provision for credit loss | 1,022 | 8
Stock-based compensation | 21,214 | 21,240
Gain on investment securities | (55,684) | (7,853)
Gain on reimbursement of drilling equipment | (21,597) | (10,207)
Other (gain) loss on sale of assets | (2,762) | 12,952
Deferred income tax benefit | (36,614) | (66,102)
Other | (2,765) | 8,849
Change in assets and liabilities: |  |
Accounts receivable | (173,625) | (33,075)
Inventories of materials and supplies | (2,482) | 14,073
Prepaid expenses and other | 9,209 | (1,638)
Other noncurrent assets | 1,829 | (3,337)
Accounts payable | 46,775 | 24,908
Accrued liabilities | 22,511 | 8,643
Deferred income tax liability | 454 | (36)
Other noncurrent liabilities | (21,745) | 4,183
Net cash provided by operating activities from continuing operations | 116,701 | 89,862
Net cash used in operating activities from discontinued operations | (60) | (41)
Net cash provided by operating activities | 116,641 | 89,821
CASH FLOWS FROM INVESTING ACTIVITIES: |  |
Capital expenditures | (174,958) | (49,173)
Other capital expenditures related to assets held-for-sale | (18,228) | 0
Purchase of short-term investments | (109,318) | (234,465)
Purchase of long-term investments | (47,210) | (2,319)
Proceeds from sale of short-term investments | 161,766 | 139,430
Proceeds from sale of long-term investments | 22,042 | 0
Proceeds from asset sales | 50,260 | 26,775
Other | (7,500) | 0
Net cash used in investing activities | (123,146) | (119,752)
CASH FLOWS FROM FINANCING ACTIVITIES: |  |
Dividends paid | (80,702) | (81,815)
Payments for employee taxes on net settlement of equity awards | (5,515) | (2,160)
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 | (76,999) | 0
Other | (587) | (719)
Net cash used in financing activities | (707,622) | (84,944)
Net decrease in cash and cash equivalents and restricted cash | (714,127) | (114,875)
Cash and cash equivalents and restricted cash, beginning of period | 936,716 | 536,747
Cash and cash equivalents and restricted cash, end of period | 222,589 | 421,872
Cash paid during the period: |  |
Interest paid | 10,889 | 11,642
Income tax paid (received), net | 3,392 | (31,826)
Cash paid for amounts included in the measurement of lease liabilities: |  |
Payments for operating leases | 9,255 | 13,353
Non-cash operating and investing activities: |  |
Changes in accounts payable and accrued liabilities related to purchases of property, plant and equipment | (4,260) | (746)
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 Amount of cash inflow (outflow) from financing activities classified as other. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3255-108585 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3291-108585 + Details
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- Definition The cash inflow from sales of all investments, including securities and other assets, having ready marketability and intended by management to be liquidated, if necessary, beyond the current operating cycle. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3179-108585 + Details
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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 https://asc.fasb.org/extlink&oid=126954810&loc=d3e3179-108585 + Details
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- Definition The cash inflow from sales of all investments, including securities and other assets, having ready marketability and intended by management to be liquidated, if necessary, within the current operating cycle. Includes cash flows from securities classified as trading securities that were acquired for reasons other than sale in the short-term. + 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 -URI https://asc.fasb.org/extlink&oid=126954810&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 https://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 https://asc.fasb.org/extlink&oid=126953954&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 https://asc.fasb.org/extlink&oid=126954810&loc=d3e3602-108585 + Details
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