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Identified Intangible Assets and Goodwill, Net
12 Months Ended
Dec. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]  
Identified Intangible Assets and Goodwill, Net [Text Block]
Intangible Assets and Goodwill, Net
The carrying amount of the intangible assets and goodwill acquired in connection with our acquisitions were as follows:
 
 Weighted-Average
Amortization
Period (Years)
 
December 31, 2018
 
December 31, 2017
 
 
Carrying
Amount
 
Accumulated
Amortization
 
Carrying
Amount
 
Accumulated
Amortization
Amortized intangible assets:
 
 
 
 
 
 
 
 
 
 
Customer lists/relationships
3.6
years
 
$
25,179

 
$
18,251

 
$
21,487

 
$
16,846

Employment-related
2.8
years
 
8,133

 
6,954

 
7,333

 
6,624

Tradenames
3.7
years
 
6,858

 
5,435

 
5,978

 
5,134

Total
 
 
 
40,170

 
$
30,640

 
34,798

 
$
28,604

Less accumulated amortization
 
 
 
30,640

 
 

 
28,604

 
 

Intangible assets, net
 
 
 
9,530

 
 

 
6,194

 
 

Goodwill
 
 
 
37,971

 
 

 
35,477

 
 

 
 
 
 
$
47,501

 
 

 
$
41,671

 
 


The changes in the carrying amounts of goodwill, by segment, for the years ended December 31, 2018 and December 31, 2017 follow:
 
Balance at
January 1,
2018
 
Acquisitions
 
Translation
and Other
Adjustments
 
Balance at
December 31,
2018
Utility
$
3,424

 
$
1,487

 
$

 
$
4,911

Residential and Commercial
32,053

 
1,353

 
(346
)
 
33,060

Total
$
35,477

 
$
2,840

 
$
(346
)
 
$
37,971


 
Balance at
January 1,
2017
 
Acquisitions
 
Translation
and Other
Adjustments
 
Balance at
December 31,
2017
Utility
$
3,424

 
$

 
$

 
$
3,424

Residential and Commercial
26,881

 
5,131

 
41

 
32,053

Total
$
30,305

 
$
5,131

 
$
41

 
$
35,477


Estimated future aggregate amortization expense of intangible assets--The estimated aggregate amortization expense of intangible assets, as of December 31, 2018, in each of the next five years follows:
 
 
Estimated Future
Amortization Expense
Year ending December 31, 2019
 
$
2,197

2020
 
2,011

2021
 
1,569

2022
 
1,339

2023
 
1,209

Thereafter
 
1,205

 
 
$
9,530