| **Discontinued Operations And Other Disposition (Narrative) (Details) (USD $)In Thousands, unless otherwise specified** | 0 Months Ended | 1 Months Ended | 3 Months Ended | 10 Months Ended | 1 Months Ended |
|-------------------------------------------------------------------------------------------------------------------------|----------------|----------------|----------------|-----------------|----------------|
||
| **Discontinued Operations And Other Dispositions [Line Items]**                                                         |           |           |           |            |           |   |
| Number of customers                                                                                                     |           |           | 38,000         |            |           |   |
| Number of separate sales transactions                                                                                   |           |           |           |            | five           | One |
| Proceeds from sale of regulated water operations                                                                        |           |           |           |            | $ 88,934       |   |
| Gain (loss) on sale                                                                                                     |           |           |           | 6,451           | 21,178         |   |
| Gain (loss) on sale, after tax                                                                                          |           |           |           | (4,193)         | (13,766)       |   |
| Percentage of customers served                                                                                          |           |           |           |            |           | 8.00% |
| Initial valuation payment                                                                                               |           | 16,911         |           |            |           |   |
| Percentage of utility system that has been relinquished                                                                 |           | 0.40%          |           |            |           |   |
| Remaining payment for Northern and Southern assets                                                                      | 50,100         |           |           |            |           |   |
| Total payment for Northern and Southern Indiana Assets                                                                  | $ 67,011       |           |           |            |           |   |

| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of gain (loss), before tax expense or benefit and not previously recognized, resulting from the sale of a business component.
+ References
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of gain (loss), after tax expense or benefit and not previously recognized, resulting from the sale of a business component.
+ References
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The cash inflow associated with the amount received from the sale of a portion of the company's business, for example a segment, division, branch or other business, during the period.
+ References
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| X                                                                                                                                                                               |
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| X                                                                                                                                                                                                                                                                                                                                                                      |
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
initial proceeds resulting from sale of a portion of a utility system pending complete valuation.
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No definition available.
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| X                                                                                                                                                                                                                      |
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Number of customers.
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| X                                                                                                                                                                                                                                                      |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Number of separate sales transactions
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| X                                                                                                                                                                                                                                        |
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Percentage of customers served
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| X                                                                                                                                                                                                                                                                                     |
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Percentage of utility system that has been relinquished
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No definition available.
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| X                                                                                                                                                                                                                                                                                   |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Remaining payment for Northern and Southern assets
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| X                                                                                                                                                                                                                                                                                          |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Total payment for Northern and Southern Indiana Assets
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