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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables) | 3 Months Ended
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Dec. 31, 2021
Accounting Policies [Abstract] |
Schedule of Restricted Cash | The following table provides a reconciliation of cash and cash equivalents and restricted cash reported in the Unaudited Condensed Consolidated Balance Sheets to the total amounts in the Unaudited Condensed Consolidated Statements of Cash Flows as follows:
(Thousands) | December 31, 2021 | September 30, 2021 | December 31, 2020 |
Balance Sheet |  |  |  |
Cash and cash equivalents | $ | 1,259 |  | $ | 4,749 |  | $ | 22,358 |  |
Restricted cash in other noncurrent assets | $ | 1,294 |  | $ | 1,294 |  | $ | 2,431 |  |
Statements of Cash Flow |  |  |  |
Cash, cash equivalents and restricted cash | $ | 2,553 |  | $ | 6,043 |  | $ | 24,789 |  |
Summary of Natural Gas in Storage | The following table summarizes natural gas in storage, at average cost by segment as of:
| December 31, 2021 | September 30, 2021
($ in thousands) | Natural Gas in Storage | Bcf | Natural Gas in Storage | Bcf
Natural Gas Distribution |  | $ | 110,673 |  | 22.7 |  |  | $ | 115,824 |  | 27.6 |
Energy Services |  | 132,019 |  | 28.9 |  |  | 77,782 |  | 18.8 |
Total |  | $ | 242,692 |  | 51.6 |  |  | $ | 193,606 |  | 46.4 |
Schedule of Software Costs Included in the Consolidated Financial Statements | The following tables present the software costs included in the Unaudited Condensed Consolidated Financial Statements:
(Thousands) | December 31, 2021 | September 30, 2021
Balance Sheets |  |
Utility plant, at cost | $ | 16,777 |  | $ | 16,543 |
Construction work in progress | $ | 11,725 |  | $ | 7,801 |
Nonutility plant and equipment, at cost | $ | 341 |  | $ | 338 |
Construction work in progress | $ | 1 |  | $ | 8 |
Accumulated depreciation and amortization, utility plant | $ | (1,644) |  | $ | (1,333) |
Accumulated depreciation and amortization, nonutility plant and equipment | $ | (16) |  | $ | (29) |
Software costs | $ | 5,464 |  | $ | 5,582 |
|  | Three Months Ended
|  | December 31,
Statements of Operations |  |  | 2021 | 2020
Operation and maintenance (1) |  |  | $ | 2,523 |  | $ | 1,924 |
Depreciation and amortization |  |  | $ | 299 |  | $ | 253 |
(1)During the three months ended December 31, 2021 and 2020, approximately $113,000 and $77,000, respectively, was amortized from software costs into O&M.
Schedule of Accumulated Other Comprehensive Income (Loss) | The following table presents the changes in the components of accumulated other comprehensive (loss) income, net of related tax effects during the three months ended December 31, 2021 and 2020:
(Thousands) | Cash Flow Hedges | Postemployment Benefit Obligation | Total
Balance at September 30, 2021 | $ | (9,376) |  |  | $ | (25,152) |  |  | $ | (34,528) |
Other comprehensive income, net of tax |  |  |  |  |
Amounts reclassified from accumulated other comprehensive loss, net of tax of $(79), $(233), $(312), respectively | 264 |  |  | 766 |  | (1) | 1,030 |
Balance at December 31, 2021 | $ | (9,112) |  |  | $ | (24,386) |  |  | $ | (33,498) |
Balance at September 30, 2020 | $ | (10,397) |  |  | $ | (33,918) |  |  | $ | (44,315) |
Other comprehensive income, net of tax |  |  |  |  |
Amounts reclassified from accumulated other comprehensive loss, net of tax of $(112), $(245) and $(357) | 231 |  |  | 812 |  | (1) | 1,043 |
Balance at December 31, 2020 | $ | (10,166) |  |  | $ | (33,106) |  |  | $ | (43,272) |
(1)Included in the computation of net periodic pension cost, a component of operations and maintenance expense on the Unaudited Condensed Consolidated Statements of Operations.

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