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SELECTED QUARTERLY FINANCIAL DATA (UNAUDITED) (Tables) | 12 Months Ended
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Sep. 30, 2013
Quarterly Financial Information Disclosure [Abstract] |
Schedule of Quarterly Financial Information | A summary of financial data for each quarter of fiscal 2013 and 2012 follows. Due to the seasonal nature of the Company's businesses, quarterly amounts vary significantly during the fiscal year. In the opinion of management, the information furnished reflects all adjustments necessary for a fair presentation of the results of the interim periods.
| First | Second | Third | Fourth
(Thousands, except per share data) | Quarter | Quarter | Quarter | Quarter
2013 |  |  |  |
Operating revenues | $ | 736,019 |  | $ | 960,885 |  | $ | 767,469 |  | $ | 733,695 |
Gross margin(1) | $ | 135,189 |  | $ | 108,137 |  | $ | 100,641 |  | $ | 23,088 |
Operating income (loss) | $ | 87,191 |  | $ | 56,969 |  | $ | 47,000 |  | $ | (31,929 | )
Net income (loss) | $ | 60,206 |  | $ | 45,469 |  | $ | 29,155 |  | $ | (20,021 | )
Earnings (loss) per share |  |  |  |
Basic | $1.44 | $1.09 | $0.70 | $(0.48)
Diluted | $1.44 | $1.08 | $0.70 | $(0.48)
2012 |  |  |  |
Operating revenues | $ | 642,411 |  | $ | 612,921 |  | $ | 425,121 |  | $ | 568,470 |
Gross margin(1) | $ | 120,364 |  | $ | 115,068 |  | $ | 28,713 |  | $ | 45,155 |
Operating income (loss) | $ | 75,218 |  | $ | 67,689 |  | $ | (19,911 | ) | $ | (14,306 | )
Net income (loss) | $ | 57,357 |  | $ | 54,535 |  | $ | (10,320 | ) | $ | (8,693 | )
Earnings (loss) per share |  |  |  |
Basic | $1.38 | $1.31 | $(0.25) | $(0.21)
Diluted | $1.38 | $1.31 | $(0.25) | $(0.21)
(1) | Gross margin consists of operating revenue less cost of goods sold and other direct expenses at NJR's unregulated subsidiaries and utility gross margin at NJNG, which includes natural gas revenues less natural gas purchases, sales tax, a TEFA and regulatory rider expenses.

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- Definition Tabular disclosure of the quarterly financial data in the annual financial statements. The disclosure includes financial information for each fiscal quarter for the current and previous year, including revenues, gross profit, income (loss) before extraordinary items and cumulative effect of a change in accounting principle and earnings per share data. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a)-(j) -URI http://asc.fasb.org/extlink&oid=25249566&loc=d3e1280-108306 + Details
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