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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016
CASH FLOWS USED IN OPERATING ACTIVITIES |  |
Net income | $ 123,699 | $ 34,929
Adjustments to reconcile net income to cash flows from operating activities |  |
Unrealized loss on derivative instruments | 34,855 | 28,302
Gain on sale of available for sale securities, net | (5,332) | (2,581)
Depreciation and amortization | 21,854 | 19,260
Amortization of acquired wholesale energy contracts | 3,391 | 0
Allowance for equity used during construction | (852) | (584)
Allowance for bad debt expense | 471 | 230
Deferred income taxes | (26,264) | 16,262
Manufactured gas plant remediation costs | (5,147) | (1,619)
Distributions received from equity investees, net of equity in earnings | (257) | 1,101
Cost of removal - asset retirement obligations | (332) | (198)
Contributions to postemployment benefit plans | (1,467) | (1,712)
Tax benefit from stock-based compensation | 2,831 | 1,188
Changes in: |  |
Components of working capital | (189,528) | (150,480)
Other noncurrent assets | 13,188 | 9,823
Other noncurrent liabilities | 5,388 | 15
Cash flows used in operating activities | (23,502) | (46,064)
Expenditures for: |  |
Utility plant | (34,638) | (31,396)
Solar and wind equipment | (18,387) | (46,785)
Real estate properties and other | (1,313) | (171)
Cost of removal | (12,752) | (7,459)
Investments in equity investees | (7,202) | (4,636)
Distribution from equity investees in excess of equity in earnings | 793 | 688
Cash paid related to acquisition | (10,000) | 0
Withdrawal from restricted cash construction fund | (43) | 0
Proceeds from sale of available for sale securities | 6,616 | 3,218
Cash flows used in investing activities | (76,926) | (86,541)
CASH FLOWS FROM FINANCING ACTIVITIES |  |
Payments of long-term debt | (1,690) | (2,716)
Net proceeds from short-term debt | 107,200 | 162,900
Proceeds from sale-leaseback transaction | 7,820 | 9,587
Payments of common stock dividends | (23,607) | (21,931)
Proceeds from waiver discount issuance of common stock | 22,690 | 0
Proceeds from issuance of common stock | 3,846 | 4,616
Purchases of treasury stock | 0 | (6,355)
Tax withholding payments related to net settled stock compensation | (13,319) | (4,167)
Cash flows from financing activities | 102,940 | 141,934
Change in cash and cash equivalents | 2,512 | 9,329
Cash and cash equivalents at beginning of period | 2,226 | 37,546
Cash and cash equivalents at end of period | 4,738 | 46,875
CHANGES IN COMPONENTS OF WORKING CAPITAL |  |
Receivables | (192,253) | (152,180)
Inventories | (2,561) | (13,954)
Recovery of gas costs | 17,102 | (2,472)
Gas purchases payable | 43,284 | 47,772
Prepaid and accrued taxes | (12,418) | 7,954
Accounts payable and other | (25,527) | (12,405)
Restricted broker margin accounts | (21,694) | (26,173)
Customers' credit balances and deposits | 6,093 | 616
Other current assets | (1,554) | 362
Components of working capital | (189,528) | (150,480)
Cash paid (received) for: |  |
Interest (net of amounts capitalized) | 9,758 | 8,153
Income taxes | (191) | (7,020)
Accrued capital expenditures | $ 26,034 | $ 28,442

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- Definition Amount of cash inflow (outflow) from operating activities, including discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3521-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 25 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3536-108585 + Details
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- Definition The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04(22)) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(18)) -URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(20)) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
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