| Schedule of Common Stock Outstanding Roll Forward [Table Text Block] |
The share issuances discussed above, together with shares issued pursuant to stock-based compensation arrangements, resulted in the following changes in outstanding common stock:
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Three Months Ended |
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Nine Months Ended |
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September 30, |
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September 30, |
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2026 |
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2025 |
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2026 |
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2025 |
Common stock shares outstanding at beginning of period |
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37,780,751 |
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36,541,849 |
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36,541,849 |
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36,489,641 |
Shares issued: |
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At-the-market offering program |
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— |
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— |
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154,321 |
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— |
Stock-based compensation |
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— |
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— |
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22,050 |
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11,213 |
Stock plan |
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39,407 |
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— |
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111,839 |
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40,995 |
Public offering |
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— |
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— |
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990,099 |
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— |
Common stock shares outstanding at end of period |
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37,820,158 |
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36,541,849 |
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37,820,158 |
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36,541,849 |
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| Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] |
Potentially dilutive securities for MGE Energy consist of restricted stock units and shares under the forward equity sale agreements, as discussed above.
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Three Months Ended |
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Nine Months Ended |
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September 30, |
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September 30, |
(In thousands) |
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2026 |
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2025 |
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2026 |
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2025 |
Net income attributed to common shareholders |
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56,358 |
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44,497 |
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138,192 |
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112,587 |
Weighted average common shares outstanding - basic |
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37,791 |
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36,542 |
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37,248 |
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36,531 |
Effect of dilutive securities: |
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Dilutive effect of stock-based compensation awards |
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59 |
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34 |
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48 |
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34 |
Dilutive effect of forward equity sale agreements |
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168 |
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— |
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77 |
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— |
Weighted average common shares outstanding - diluted |
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38,018 |
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36,576 |
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37,373 |
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36,565 |
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Basic earnings per share |
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$1.49 |
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$1.22 |
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$3.71 |
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$3.08 |
Diluted earnings per share |
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$1.48 |
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$1.22 |
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$3.70 |
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$3.08 |
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