| Schedule of Goodwill [Table Text Block] |
The following table reflects goodwill allocated to each reporting segment as of September 30, 2014:
| | | | | | | | | | | | | | | | | | Electricity | | Gas | | Water | | Total Company | | (in thousands) | Balance at January 1, 2014 | | | | | | | | Goodwill before impairment | $ | 493,610 |
| | $ | 394,878 |
| | $ | 429,783 |
| | $ | 1,318,271 |
| Accumulated impairment losses | (433,378 | ) | | — |
| | (336,315 | ) | | (769,693 | ) | Goodwill, net | 60,232 |
| | 394,878 |
| | 93,468 |
| | 548,578 |
| | | | | | | | | Goodwill impairment | (977 | ) | | — |
| | — |
| | (977 | ) | Effect of change in exchange rates | (2,408 | ) | | (24,211 | ) | | (5,341 | ) | | (31,960 | ) | | | | | | | | | Balance at September 30, 2014 | | | | | | | | Goodwill before impairment | 463,550 |
| | 370,667 |
| | 397,462 |
| | 1,231,679 |
| Accumulated impairment losses | (406,703 | ) | | — |
| | (309,335 | ) | | (716,038 | ) | Goodwill, net | $ | 56,847 |
| | $ | 370,667 |
| | $ | 88,127 |
| | $ | 515,641 |
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