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Goodwill and Intangible Assets
9 Months Ended
Sep. 30, 2017
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill and Intangible Assets [Text Block]
GOODWILL AND INTANGIBLE ASSETS

The aggregate carrying amount of goodwill was $149.9 million as of September 30, 2017 ($131.2 million as of December 31, 2016). Changes to goodwill for the nine months ended September 30, 2017, relate to U.S. Water Services’ acquisition of Tonka Water and the finalization of purchase price accounting for U.S. Water Services’ acquisition of WEST.

Balances of intangible assets, net, excluding goodwill as of September 30, 2017, are as follows:
 
December 31,
2016

 
Additions (a)
 
 Amortization
September 30,
2017

Millions
 
 
 
 
 
 
Intangible Assets
 
 
 
 
 
 
Definite-Lived Intangible Assets
 
 
 
 
 
 
Customer Relationships
$59.3
 

 
$(3.4)

$55.9

Developed Technology and Other (b)
6.3
 

$0.9

 
(0.7)
6.5

Total Definite-Lived Intangible Assets
65.6

 
0.9

 
(4.1)
62.4

Indefinite-Lived Intangible Assets
 
 
 
 
 
 
Trademarks and Trade Names
16.6

 

 
n/a
16.6

Total Intangible Assets

$82.2

 

$0.9

 
$(4.1)

$79.0


(a)
Additions resulting from the September 1, 2017, acquisition of Tonka Water. (See Note 3. Acquisitions.)    
(b)
Developed Technology and Other includes patents, non-compete agreements, land easements and trade names.

Customer relationships have a remaining useful life of approximately 20 years, and developed technology and other have remaining useful lives ranging from approximately 1 year to approximately 11 years (weighted average of approximately 7 years). The weighted average remaining useful life of all definite-lived intangible assets as of September 30, 2017, is approximately 19 years.
NOTE 4. GOODWILL AND INTANGIBLE ASSETS (Continued)

Amortization expense for intangible assets was $1.3 million and $4.1 million for the quarter and nine months ended September 30, 2017, respectively ($1.3 million and $3.8 million for the quarter and nine months ended September 30, 2016, respectively). Accumulated amortization was $13.4 million as of September 30, 2017 ($9.3 million as of December 31, 2016). The estimated amortization expense for definite-lived intangible assets for the remainder of 2017 is $1.5 million. Estimated annual amortization expense for definite-lived intangible assets is $5.3 million in 2018, $4.9 million in 2019, $4.7 million in 2020, $4.6 million in 2021 and $41.4 million thereafter.