Stock-Based Compensation (Tables)
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6 Months Ended |
Jun. 30, 2026 |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Schedule Of Performance Goals |
| | Metric 1 – Company’s total shareholder return (“TSR”) compared to the TSR for a specific peer group of investor-owned utilities (a market-based condition) | 40.00% | Metric 2 – Achievement of a three-year average return on equity target (a performance-based condition) | 30.00% | Metric 3 – Achievement of a consolidated operations and maintenance expense target over a three-year measurement period (a performance-based condition) | 30.00% |
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| Summary Of PSU Transactions |
| | | | | | | | | | | | | | | | | Number | | Weighted | | | | of | | Average | | | | Share Units | | Fair Value | Nonvested share units at beginning of period | | | 512,454 | | $ | 35.85 | Granted | | | 172,080 | | $ | 41.44 | Performance criteria adjustment | | | (21,934) | | $ | 34.92 | Actual vested | | | (84,704) | | $ | 45.07 | Forfeited | | | (14,324) | | $ | 37.30 | Nonvested share units at end of period | | | 563,572 | | $ | 36.17 | | | | | | | |
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| Summary Of RSU Transactions |
| | | | | | | | | | | | | | | | | Number | | Weighted | | | | of | | Average | | | | Stock Units | | Fair Value | Nonvested stock units at beginning of period | | | 297,334 | | $ | 37.52 | Granted | | | 149,931 | | $ | 39.28 | Stock units vested | | | (109,832) | | $ | 40.92 | Forfeited | | | (7,793) | | $ | 36.93 | Nonvested stock units at end of period | | | 329,640 | | $ | 37.50 |
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| Summary Of Stock Option Transactions |
| | | | | | | | | | | | | | | | | | | | | | | | | | Weighted | | Weighted | | | | | | | | Average | | Average | | Aggregate | | | | | Exercise | | Remaining | | Intrinsic | | | Shares | | Price | | Life (years) | | Value | Outstanding at beginning of period | | 1,069,386 | | $ | 36.63 | | | | | | Granted | | 197,851 | | $ | 39.15 | | | | | | Forfeited | | (2,895) | | $ | 36.61 | | | | | | Exercised | | (23,175) | | $ | 33.07 | | | | | | Outstanding at end of period | | 1,241,167 | | $ | 37.11 | | 5.4 | | $ | 2,587 | | | | | | | | | | | | Exercisable at end of period | | 875,772 | | $ | 36.94 | | 3.8 | | $ | 2,125 |
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| Summary Of Restricted Stock Transactions |
| | | | | | | | Number | | Weighted | | | of | | Average | | | Shares | | Fair Value | Nonvested restricted stock at beginning of period | | - | | $ | - | Granted | | 1,323 | | $ | 37.79 | Vested | | - | | $ | - | Nonvested restricted stock at end of period | | 1,323 | | $ | 37.79 |
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| Performance Share Units [Member] |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Summary Of Compensation Costs |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Three Months Ended | | Six Months Ended | | | June 30, | | June 30, | | | 2026 | | 2025 | | 2026 | | 2025 | Stock-based compensation within operations and maintenance expenses | | $ | 2,417 | | $ | 1,831 | | $ | 3,568 | | $ | 3,247 | Income tax benefit | | $ | 608 | | $ | 463 | | $ | 898 | | $ | 821 |
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| Assumptions Used In The Pricing Model |
| | | | | | | | | | | 2026 | | 2025 | Expected term (years) | | 3 | | 3 | Risk-free interest rate | | 3.63% | | 4.19% | Expected volatility | | 21.61% | | 23.20% |
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| Restricted Stock Units [Member] |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Summary Of Compensation Costs |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Three Months Ended | | Six Months Ended | | | June 30, | | June 30, | | | 2026 | | 2025 | | 2026 | | 2025 | Stock-based compensation within operations and maintenance expenses | | $ | 1,053 | | $ | 1,621 | | $ | 2,288 | | $ | 2,528 | Income tax benefit | | $ | 265 | | $ | 410 | | $ | 576 | | $ | 639 |
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| Stock Options [Member] |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Summary Of Compensation Costs |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Three Months Ended | | Six Months Ended | | | June 30, | | | June 30, | | | 2026 | | 2025 | | 2026 | | 2025 | Stock-based compensation within operations and maintenance expenses | | $ | 245 | | $ | 840 | | $ | 525 | | $ | 1,109 | Income tax benefit | | $ | 61 | | $ | 211 | | $ | 132 | | $ | 279 | | | | | | | | | | | | | |
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| Assumptions Used In The Pricing Model |
| | | | | | 2026 | 2025 | Expected term (years) | | 5.5 | | 5.5 | Risk-free interest rate | | 3.85% | | 4.22% | Expected volatility | | 22.48% | | 28.50% | Dividend yield | | 3.49% | | 3.69% | Grant date fair value per option | $ | 7.00 | $ | 7.95 |
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| Restricted Stock [Member] |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Summary Of Compensation Costs |
| | | | | | | | | | | | | | | Three Months Ended | | Six Months Ended | | | June 30, | | June 30, | | | 2026 | | 2025 | | 2026 | | 2025 | Stock-based compensation within operations and maintenance expenses | | $ | 12 | | $ | 12 | | $ | 24 | | $ | 24 | Income tax benefit | | $ | 4 | | $ | 3 | | $ | 7 | | $ | 6 |
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| Stock Awards [Member] |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Summary Of Compensation Costs |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Three Months Ended | | Six Months Ended | | | June 30, | | June 30, | | | 2026 | | 2025 | | 2026 | | 2025 | Stock-based compensation within operations and maintenance expenses | | $ | 810 | | $ | - | | $ | 810 | | $ | - | Income tax benefit | | $ | 218 | | $ | - | | $ | 218 | | $ | - |
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| Summary Of Nonvested Share Activity |
| | | | | | | | | | | | | | Number | | Weighted | | | of | | Average | | | Stock Awards | | Fair Value | Nonvested stock awards at beginning of period | | - | | $ | - | Granted | | 21,996 | | $ | 36.83 | Vested | | (21,996) | | $ | 36.83 | Nonvested stock awards at end of period | | - | | $ | - |
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