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1. | SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES |
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2. | REGULATORY ASSETS AND LIABILITIES |
June 30, 2017 | ||||||||||||||
Current | Noncurrent | Total | ||||||||||||
(Thousands of dollars) | ||||||||||||||
Under-recovered purchased-gas costs | $ | 26,500 | $ | — | $ | 26,500 | ||||||||
Pension and postemployment benefit costs | 31,498 | 408,593 | 440,091 | |||||||||||
Weather normalization | 20,311 | — | 20,311 | |||||||||||
Reacquired debt costs | 812 | 7,703 | 8,515 | |||||||||||
Other | 3,181 | 4,798 | 7,979 | |||||||||||
Total regulatory assets, net of amortization | 82,302 | 421,094 | 503,396 | |||||||||||
Over-recovered purchased-gas costs | (14,049 | ) | — | (14,049 | ) | |||||||||
Ad valorem tax | (606 | ) | — | (606 | ) | |||||||||
Total regulatory liabilities (a) | (14,655 | ) | — | (14,655 | ) | |||||||||
Net regulatory assets (liabilities) | $ | 67,647 | $ | 421,094 | $ | 488,741 |
December 31, 2016 | ||||||||||||||
Current | Noncurrent | Total | ||||||||||||
(Thousands of dollars) | ||||||||||||||
Under-recovered purchased-gas costs | $ | 29,901 | $ | — | $ | 29,901 | ||||||||
Pension and postemployment benefit costs | 31,498 | 427,448 | 458,946 | |||||||||||
Weather normalization | 17,661 | — | 17,661 | |||||||||||
Reacquired debt costs | 812 | 8,108 | 8,920 | |||||||||||
Other | 3,274 | 4,966 | 8,240 | |||||||||||
Total regulatory assets, net of amortization | 83,146 | 440,522 | 523,668 | |||||||||||
Over-recovered purchased-gas costs | (10,154 | ) | — | (10,154 | ) | |||||||||
Ad valorem tax | (1,768 | ) | — | (1,768 | ) | |||||||||
Total regulatory liabilities (a) | (11,922 | ) | — | (11,922 | ) | |||||||||
Net regulatory assets (liabilities) | $ | 71,224 | $ | 440,522 | $ | 511,746 |
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3. | CREDIT FACILITY AND SHORT-TERM NOTES PAYABLE |
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4. | LONG-TERM DEBT |
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5. | EQUITY |
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6. | ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) |
Three Months Ended | Six Months Ended | |||||||||||||||
Details about Accumulated Other Comprehensive | June 30, | June 30, | Affected Line Item in the | |||||||||||||
Income (Loss) Components | 2017 | 2016 | 2017 | 2016 | Statements of Income | |||||||||||
(Thousands of dollars) | ||||||||||||||||
Pension and other postemployment benefit plan obligations (a) | ||||||||||||||||
Amortization of net loss | $ | 10,648 | $ | 10,036 | $ | 21,296 | $ | 20,073 | ||||||||
Amortization of unrecognized prior service cost | (1,149 | ) | (908 | ) | (2,298 | ) | (1,816 | ) | ||||||||
9,499 | 9,128 | 18,998 | 18,257 | |||||||||||||
Regulatory adjustments (b) | (9,289 | ) | (8,940 | ) | (18,579 | ) | (17,881 | ) | ||||||||
210 | 188 | 419 | 376 | Income before income taxes | ||||||||||||
(81 | ) | (73 | ) | (161 | ) | (145 | ) | Income tax expense | ||||||||
Total reclassifications for the period | $ | 129 | $ | 115 | $ | 258 | $ | 231 | Net income |
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7. | EARNINGS PER SHARE |
Three Months Ended June 30, 2017 | ||||||||||
Income | Shares | Per Share Amount | ||||||||
(Thousands, except per share amounts) | ||||||||||
Basic EPS Calculation | ||||||||||
Net income available for common stock | $ | 20,623 | 52,553 | $ | 0.39 | |||||
Diluted EPS Calculation | ||||||||||
Effect of dilutive securities | — | 416 | ||||||||
Net income available for common stock and common stock equivalents | $ | 20,623 | 52,969 | $ | 0.39 |
Three Months Ended June 30, 2016 | ||||||||||
Income | Shares | Per Share Amount | ||||||||
(Thousands, except per share amounts) | ||||||||||
Basic EPS Calculation | ||||||||||
Net income available for common stock | $ | 20,300 | 52,386 | $ | 0.39 | |||||
Diluted EPS Calculation | ||||||||||
Effect of dilutive securities | — | 450 | ||||||||
Net income available for common stock and common stock equivalents | $ | 20,300 | 52,836 | $ | 0.38 |
Six Months Ended June 30, 2017 | ||||||||||
Income | Shares | Per Share Amount | ||||||||
(Thousands, except per share amounts) | ||||||||||
Basic EPS Calculation | ||||||||||
Net income available for common stock | $ | 97,079 | 52,565 | $ | 1.85 | |||||
Diluted EPS Calculation | ||||||||||
Effect of dilutive securities | — | 447 | ||||||||
Net income available for common stock and common stock equivalents | $ | 97,079 | 53,012 | $ | 1.83 |
Six Months Ended June 30, 2016 | ||||||||||
Income | Shares | Per Share Amount | ||||||||
(Thousands, except per share amounts) | ||||||||||
Basic EPS Calculation | ||||||||||
Net income available for common stock | $ | 85,044 | 52,452 | $ | 1.62 | |||||
Diluted EPS Calculation | ||||||||||
Effect of dilutive securities | — | 520 | ||||||||
Net income available for common stock and common stock equivalents | $ | 85,044 | 52,972 | $ | 1.61 |
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8. | EMPLOYEE BENEFIT PLANS |
Pension Benefits | |||||||||||||
Three Months Ended | Six Months Ended | ||||||||||||
June 30, | June 30, | ||||||||||||
2017 | 2016 | 2017 | 2016 | ||||||||||
(Thousands of dollars) | |||||||||||||
Components of net periodic benefit cost | |||||||||||||
Service cost | $ | 3,044 | $ | 3,014 | $ | 6,088 | $ | 6,028 | |||||
Interest cost | 10,113 | 11,388 | 20,226 | 22,775 | |||||||||
Expected return on assets | (14,624 | ) | (15,296 | ) | (29,248 | ) | (30,592 | ) | |||||
Amortization of net loss | 9,027 | 8,885 | 18,054 | 17,771 | |||||||||
Net periodic benefit cost | $ | 7,560 | $ | 7,991 | $ | 15,120 | $ | 15,982 |
Other Postemployment Benefits | |||||||||||||
Three Months Ended | Six Months Ended | ||||||||||||
June 30, | June 30, | ||||||||||||
2017 | 2016 | 2017 | 2016 | ||||||||||
(Thousands of dollars) | |||||||||||||
Components of net periodic benefit cost | |||||||||||||
Service cost | $ | 627 | $ | 638 | $ | 1,254 | $ | 1,276 | |||||
Interest cost | 2,472 | 2,627 | 4,944 | 5,254 | |||||||||
Expected return on assets | (3,147 | ) | (3,071 | ) | (6,294 | ) | (6,142 | ) | |||||
Amortization of unrecognized prior service cost | (1,149 | ) | (908 | ) | (2,298 | ) | (1,816 | ) | |||||
Amortization of net loss | 1,621 | 1,151 | 3,242 | 2,302 | |||||||||
Net periodic benefit cost | $ | 424 | $ | 437 | $ | 848 | $ | 874 |
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9. | COMMITMENTS AND CONTINGENCIES |
• | an evaluation of whether natural gas pipeline integrity-management requirements should be expanded beyond current high-consequence areas; |
• | a verification of records for pipelines in class 3 and 4 locations and high-consequence areas to confirm maximum allowable operating pressures; and |
• | a requirement to test previously untested pipelines operating above 30 percent yield strength in high-consequence areas. |
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10. | DERIVATIVE FINANCIAL INSTRUMENTS AND FAIR VALUE MEASUREMENTS |
Recognition and Measurement | ||||
Accounting Treatment | Balance Sheet | Income Statement | ||
Normal purchases and normal sales | - | Recorded at historical cost | - | Change in fair value not recognized in earnings |
Mark-to-market | - | Recorded at fair value | - | Change in fair value recognized in, and recoverable through, the purchased-gas cost adjustment mechanisms |
• | Level 1 - Unadjusted quoted prices in active markets for identical assets or liabilities; |
• | Level 2 - Significant observable pricing inputs other than quoted prices included within Level 1 that are, either directly or indirectly, observable as of the reporting date. Essentially, this represents inputs that are derived principally from or corroborated by observable market data; and |
• | Level 3 - May include one or more unobservable inputs that are significant in establishing a fair value estimate. These unobservable inputs are developed based on the best information available and may include our own internal data. |
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Recognition and Measurement | ||||
Accounting Treatment | Balance Sheet | Income Statement | ||
Normal purchases and normal sales | - | Recorded at historical cost | - | Change in fair value not recognized in earnings |
Mark-to-market | - | Recorded at fair value | - | Change in fair value recognized in, and recoverable through, the purchased-gas cost adjustment mechanisms |
• | Level 1 - Unadjusted quoted prices in active markets for identical assets or liabilities; |
• | Level 2 - Significant observable pricing inputs other than quoted prices included within Level 1 that are, either directly or indirectly, observable as of the reporting date. Essentially, this represents inputs that are derived principally from or corroborated by observable market data; and |
• | Level 3 - May include one or more unobservable inputs that are significant in establishing a fair value estimate. These unobservable inputs are developed based on the best information available and may include our own internal data. |
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June 30, 2017 | ||||||||||||||
Current | Noncurrent | Total | ||||||||||||
(Thousands of dollars) | ||||||||||||||
Under-recovered purchased-gas costs | $ | 26,500 | $ | — | $ | 26,500 | ||||||||
Pension and postemployment benefit costs | 31,498 | 408,593 | 440,091 | |||||||||||
Weather normalization | 20,311 | — | 20,311 | |||||||||||
Reacquired debt costs | 812 | 7,703 | 8,515 | |||||||||||
Other | 3,181 | 4,798 | 7,979 | |||||||||||
Total regulatory assets, net of amortization | 82,302 | 421,094 | 503,396 | |||||||||||
Over-recovered purchased-gas costs | (14,049 | ) | — | (14,049 | ) | |||||||||
Ad valorem tax | (606 | ) | — | (606 | ) | |||||||||
Total regulatory liabilities (a) | (14,655 | ) | — | (14,655 | ) | |||||||||
Net regulatory assets (liabilities) | $ | 67,647 | $ | 421,094 | $ | 488,741 |
December 31, 2016 | ||||||||||||||
Current | Noncurrent | Total | ||||||||||||
(Thousands of dollars) | ||||||||||||||
Under-recovered purchased-gas costs | $ | 29,901 | $ | — | $ | 29,901 | ||||||||
Pension and postemployment benefit costs | 31,498 | 427,448 | 458,946 | |||||||||||
Weather normalization | 17,661 | — | 17,661 | |||||||||||
Reacquired debt costs | 812 | 8,108 | 8,920 | |||||||||||
Other | 3,274 | 4,966 | 8,240 | |||||||||||
Total regulatory assets, net of amortization | 83,146 | 440,522 | 523,668 | |||||||||||
Over-recovered purchased-gas costs | (10,154 | ) | — | (10,154 | ) | |||||||||
Ad valorem tax | (1,768 | ) | — | (1,768 | ) | |||||||||
Total regulatory liabilities (a) | (11,922 | ) | — | (11,922 | ) | |||||||||
Net regulatory assets (liabilities) | $ | 71,224 | $ | 440,522 | $ | 511,746 |
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Three Months Ended | Six Months Ended | |||||||||||||||
Details about Accumulated Other Comprehensive | June 30, | June 30, | Affected Line Item in the | |||||||||||||
Income (Loss) Components | 2017 | 2016 | 2017 | 2016 | Statements of Income | |||||||||||
(Thousands of dollars) | ||||||||||||||||
Pension and other postemployment benefit plan obligations (a) | ||||||||||||||||
Amortization of net loss | $ | 10,648 | $ | 10,036 | $ | 21,296 | $ | 20,073 | ||||||||
Amortization of unrecognized prior service cost | (1,149 | ) | (908 | ) | (2,298 | ) | (1,816 | ) | ||||||||
9,499 | 9,128 | 18,998 | 18,257 | |||||||||||||
Regulatory adjustments (b) | (9,289 | ) | (8,940 | ) | (18,579 | ) | (17,881 | ) | ||||||||
210 | 188 | 419 | 376 | Income before income taxes | ||||||||||||
(81 | ) | (73 | ) | (161 | ) | (145 | ) | Income tax expense | ||||||||
Total reclassifications for the period | $ | 129 | $ | 115 | $ | 258 | $ | 231 | Net income |
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Three Months Ended June 30, 2017 | ||||||||||
Income | Shares | Per Share Amount | ||||||||
(Thousands, except per share amounts) | ||||||||||
Basic EPS Calculation | ||||||||||
Net income available for common stock | $ | 20,623 | 52,553 | $ | 0.39 | |||||
Diluted EPS Calculation | ||||||||||
Effect of dilutive securities | — | 416 | ||||||||
Net income available for common stock and common stock equivalents | $ | 20,623 | 52,969 | $ | 0.39 |
Three Months Ended June 30, 2016 | ||||||||||
Income | Shares | Per Share Amount | ||||||||
(Thousands, except per share amounts) | ||||||||||
Basic EPS Calculation | ||||||||||
Net income available for common stock | $ | 20,300 | 52,386 | $ | 0.39 | |||||
Diluted EPS Calculation | ||||||||||
Effect of dilutive securities | — | 450 | ||||||||
Net income available for common stock and common stock equivalents | $ | 20,300 | 52,836 | $ | 0.38 |
Six Months Ended June 30, 2017 | ||||||||||
Income | Shares | Per Share Amount | ||||||||
(Thousands, except per share amounts) | ||||||||||
Basic EPS Calculation | ||||||||||
Net income available for common stock | $ | 97,079 | 52,565 | $ | 1.85 | |||||
Diluted EPS Calculation | ||||||||||
Effect of dilutive securities | — | 447 | ||||||||
Net income available for common stock and common stock equivalents | $ | 97,079 | 53,012 | $ | 1.83 |
Six Months Ended June 30, 2016 | ||||||||||
Income | Shares | Per Share Amount | ||||||||
(Thousands, except per share amounts) | ||||||||||
Basic EPS Calculation | ||||||||||
Net income available for common stock | $ | 85,044 | 52,452 | $ | 1.62 | |||||
Diluted EPS Calculation | ||||||||||
Effect of dilutive securities | — | 520 | ||||||||
Net income available for common stock and common stock equivalents | $ | 85,044 | 52,972 | $ | 1.61 |
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Pension Benefits | |||||||||||||
Three Months Ended | Six Months Ended | ||||||||||||
June 30, | June 30, | ||||||||||||
2017 | 2016 | 2017 | 2016 | ||||||||||
(Thousands of dollars) | |||||||||||||
Components of net periodic benefit cost | |||||||||||||
Service cost | $ | 3,044 | $ | 3,014 | $ | 6,088 | $ | 6,028 | |||||
Interest cost | 10,113 | 11,388 | 20,226 | 22,775 | |||||||||
Expected return on assets | (14,624 | ) | (15,296 | ) | (29,248 | ) | (30,592 | ) | |||||
Amortization of net loss | 9,027 | 8,885 | 18,054 | 17,771 | |||||||||
Net periodic benefit cost | $ | 7,560 | $ | 7,991 | $ | 15,120 | $ | 15,982 |
Other Postemployment Benefits | |||||||||||||
Three Months Ended | Six Months Ended | ||||||||||||
June 30, | June 30, | ||||||||||||
2017 | 2016 | 2017 | 2016 | ||||||||||
(Thousands of dollars) | |||||||||||||
Components of net periodic benefit cost | |||||||||||||
Service cost | $ | 627 | $ | 638 | $ | 1,254 | $ | 1,276 | |||||
Interest cost | 2,472 | 2,627 | 4,944 | 5,254 | |||||||||
Expected return on assets | (3,147 | ) | (3,071 | ) | (6,294 | ) | (6,142 | ) | |||||
Amortization of unrecognized prior service cost | (1,149 | ) | (908 | ) | (2,298 | ) | (1,816 | ) | |||||
Amortization of net loss | 1,621 | 1,151 | 3,242 | 2,302 | |||||||||
Net periodic benefit cost | $ | 424 | $ | 437 | $ | 848 | $ | 874 |
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