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Goodwill and Intangible Assets
 9 Months Ended
Jun. 30, 2019
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill and Intangible Assets Disclosure [Text Block]
12. GOODWILL AND INTANGIBLE ASSETS

Goodwill

The following is a progression of goodwill by segment for the nine months ended June 30, 2019:

 
 
Commercial & Industrial
 
 
Communications
 
Infrastructure Solutions
 
 
Residential
 
Total
Goodwill at September 30, 2018
 
$
6,976

 
 
$
2,816

 
$
30,931

 
 
$
9,979

 
$
50,702

Divestitures (See Note 14)
 
 
—

 
 
 
—

 
 
(119
)
 
 
 
—

 
 
(119
)
Adjustments
 
 
—

 
 
 
—

 
 
—

 
 
 
39

 
 
39

Goodwill at June 30, 2019
 
$
6,976

 
 
$
2,816

 
$
30,812

 
 
$
10,018

 
$
50,622



Intangible Assets

Intangible assets consist of the following:

 
 
 
Estimated Useful Lives (in Years)
 
June 30, 2019
 
 
 
 
 
Gross Carrying Amount
 
 
Accumulated Amortization
 
Net
Trademarks/trade names
 
5-20
 
$
5,084

 
$
(1,163
)
 
$
3,921

Technical library
 
20
 
 
400

 
 
(116
)
 
 
284

Customer relationships
 
6-15
 
 
33,539

 
 
(10,256
)
 
 
23,283

Non-competition arrangements
 
5
 
 
40

 
 
(7
)
 
 
33

Backlog
 
1
 
 
378

 
 
(362
)
 
 
16

Construction contracts
 
1
 
 
221

 
 
(223
)
 
 
(2
)
Total intangible assets
 
 
 
$
39,662

 
$
(12,127
)
 
$
27,535



 
 
 
Estimated Useful Lives (in Years)
 
September 30, 2018
 
 
 
 
 
Gross Carrying Amount
 
 
Accumulated Amortization
 
Net
Trademarks/trade names
 
5-20
 
$
5,084

 
$
(831
)
 
$
4,253

Technical library
 
20
 
 
400

 
 
(101
)
 
 
299

Customer relationships
 
6-15
 
 
33,539

 
 
(7,870
)
 
 
25,669

Non-competition arrangements
 
5
 
 
40

 
 
(1
)
 
 
39

Backlog
 
1
 
 
378

 
 
(176
)
 
 
202

Construction contracts
 
1
 
 
2,184

 
 
(2,056
)
 
 
128

Total intangible assets
 
 
 
$
41,625

 
$
(11,035
)
 
$
30,590