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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2018
CASH FLOWS FROM OPERATING ACTIVITIES |  |  |
Net income | $ 163,007 | $ 123,935 | $ 231,013
Adjustments to reconcile net income to cash flows from operating activities |  |  |
Unrealized gain on derivative instruments | (9,644) | 2,881 | 26,770
Gain on sale of available for sale securities | 0 | (1,567) | (5,332)
Gain on sale of businesses | 0 | (645) | (4,663)
Depreciation and amortization | 107,368 | 81,109 | 76,571
Noncash lease expense | 3,851 | 0 | 0
Amortization of acquired wholesale energy contracts | 4,924 | 8,424 | 18,222
Allowance for equity used during construction | (17,053) | (6,492) | (5,531)
Allowance for doubtful accounts | 2,238 | 2,387 | 2,579
Deferred income taxes | 34,346 | (2,822) | 27,143
Deferred income tax benefit due to tax legislation | 0 | 0 | (75,736)
Equivalent value of ITCs recognized on equipment financing | (6,482) | (6,482) | 0
Manufactured gas plant remediation costs | (7,651) | (13,878) | (16,171)
Equity in earnings, net of distributions received from equity investees | (5,848) | (4,156) | (1,725)
Cost of removal - asset retirement obligations | (245) | (258) | (298)
Contributions to postemployment benefit plans | (9,032) | (8,157) | (6,359)
Tax benefit of delivered shares from stock based compensation | 647 | 1,290 | 2,950
Changes in: |  |  |
Components of working capital | (8,096) | (27,759) | 97,004
Other noncurrent assets | (44,129) | 8,193 | 17,860
Other noncurrent liabilities | 5,280 | 38,125 | 13,989
Cash flows from operating activities | 213,481 | 194,128 | 398,286
Expenditures for: |  |  |
Cost of removal | (22,059) | (40,195) | (47,643)
Investments in equity investees | (2,117) | (4,102) | (16,151)
Distributions from equity investees in excess of equity in earnings | 1,907 | 2,428 | 3,117
Acquisition of assets, net of cash acquired of $5.1 million | (523,647) | 0 | (10,000)
Proceeds from sale of businesses, net of closing costs | 0 | 205,745 | 27,916
Proceeds from sale of available for sale securities, net | 0 | 34,484 | 6,616
Cash flows used in investing activities | (994,025) | (287,377) | (373,090)
CASH FLOWS FROM (USED IN) FINANCING ACTIVITIES |  |  |
Proceeds from long-term debt | 660,000 | 467,900 |
Proceeds from long-term debt |  |  | 225,000
Payments of long-term debt | (20,286) | (218,638) |
Payments of long-term debt |  |  | (165,486)
Proceeds from term loan | 350,000 | 0 | 0
Payments of term loan | (350,000) | 0 | 0
Proceeds from (payments of)short-term debt, net | 99,900 | (126,500) | (114,050)
Proceeds from sale leaseback transaction - solar | 42,927 | 0 | 71,538
Proceeds from sale leaseback transaction - natural gas meters | 4,000 | 9,895 | 7,820
Payments of common stock dividends | (117,804) | (104,059) | (95,835)
Proceeds from waiver discount issuance of common stock | 0 | 57,391 | 41,677
Proceeds from issuance of common stock | 18,080 | 16,717 | 17,136
Proceeds from equity offering | 212,900 | 0 | 0
Tax withholding payments related to net settled stock compensation | (3,813) | (7,104) | (13,755)
Cash flows from (used in) financing activities | 895,904 | 95,602 | (25,955)
Change in cash, cash equivalents and restricted cash | 115,360 | 2,353 | (759)
Cash, cash equivalents and restricted cash at beginning of period | 4,063 | 1,710 | 2,469
Cash, cash equivalents and restricted cash at end of period | 119,423 | 4,063 | 1,710
CHANGES IN COMPONENTS OF WORKING CAPITAL |  |  |
Receivables | 5,065 | 63,795 | (7,524)
Inventories | (3,254) | 14,265 | 15,464
Recovery of natural gas costs | 17,479 | (15,733) | 30,439
Natural gas purchases payable | (41,326) | (74,031) | 51,187
Natural gas purchases payable - related parties | 1 | (360) | (1)
Prepaid expenses | 2,548 | (1,193) | 2,037
Prepaid and accrued taxes | (2,376) | 2,271 | 1,254
Accounts payable and other | 20,390 | 2,256 | 40,422
Restricted broker margin accounts | (6,097) | (22,004) | (30,974)
Customers’ credit balances and deposits | (1,182) | (209) | 368
Other current assets | 656 | 3,184 | (5,668)
Total | 8,096 | 27,759 | (97,004)
Cash paid (received) for: |  |  |
Interest (net of amounts capitalized) | 66,146 | 50,371 | 44,821
Income taxes | 7,594 | 12,647 | 5,577
Accrued capital expenditures | 19,434 | 30,725 | 30,559
Inception gain on natural gas swap contract recognized as non-cash proceeds from sale of business | 0 | 0 | 14,579
Utility plant |  |  |
Expenditures for: |  |  |
Payments to acquire PP&E | (290,040) | (304,809) | (206,880)
Solar and wind equipment |  |  |
Expenditures for: |  |  |
Payments to acquire PP&E | (133,841) | (157,828) | (123,421)
Storage and transportation assets and other |  |  |
Expenditures for: |  |  |
Payments to acquire PP&E | $ (24,228) | $ (23,100) | $ (6,644)

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