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Goodwill (Text Block)
 12 Months Ended
Dec. 31, 2016
Goodwill Excluding Non Goodwill Intangibles [Abstract]  
Goodwill Disclosure [Text Block]
Goodwill

The following table reflects goodwill allocated to each reporting segment at December 31, 2016 and 2015:

 
Electricity
 
Gas
 
Water
 
Total Company
 
(in thousands)
Goodwill balance at January 1, 2015
 
 
 
 
 
 
 
Goodwill before impairment
$
449,668

 
$
359,485

 
$
382,655

 
$
1,191,808

Accumulated impairment losses
(393,981
)
 
—

 
(297,007
)
 
(690,988
)
Goodwill, net
55,687

 
359,485

 
85,648

 
500,820

 
 
 
 
 
 
 
 
Goodwill acquired
—

 
—

 
4,684

 
4,684

Effect of change in exchange rates
(2,954
)
 
(28,049
)
 
(6,379
)
 
(37,382
)
 
 
 
 
 
 
 
 
Goodwill balance at December 31, 2015
 
 
 
 
 
 
 
Goodwill before impairment
414,910

 
331,436

 
350,314

 
1,096,660

Accumulated impairment losses
(362,177
)
 
—

 
(266,361
)
 
(628,538
)
Goodwill, net
52,733

 
331,436

 
83,953

 
468,122

 
 
 
 
 
 
 
 
Effect of change in exchange rates
(1,360
)
 
(11,523
)
 
(2,745
)
 
(15,628
)
 
 
 
 
 
 
 
 
Goodwill balance at December 31, 2016
 
 
 
 
 
 
 
Goodwill before impairment
400,299

 
319,913

 
334,505

 
1,054,717

Accumulated impairment losses
(348,926
)
 
—

 
(253,297
)
 
(602,223
)
Goodwill, net
$
51,373

 
$
319,913

 
$
81,208

 
$
452,494



During our 2016 and 2015 annual goodwill impairment test, performed as of October 1, 2016 and 2015, respectively, we performed the first step of the quantitative impairment test for Electricity, Gas, and Water and determined that the fair value of each of the reporting units exceeded their carrying values. No goodwill impairment was required to be recognized as the result of this quantitative analysis.

Refer to Note 1 for a description of our reporting units and the methods used to determine the fair values of our reporting units and to determine the amount of any goodwill impairment.