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Goodwill and Other Intangible Assets (Notes)
3 Months Ended
Nov. 30, 2016
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill and Other Intangible Assets Disclosure [Text Block]
Goodwill and Other Intangible Assets

Goodwill of $158.8 million and $160.4 million on November 30, 2016, and August 31, 2016, respectively, is included in other assets on our Consolidated Balance Sheets. Changes in the net carrying amount of goodwill for the three months ended November 30, 2016, by segment, are as follows:
 
Energy
 
Ag
 
Corporate
and Other
 
Total
 
(Dollars in thousands)
Balances, August 31, 2016
$
552

 
$
148,916

 
$
10,946

 
$
160,414

Effect of foreign currency translation adjustments

 
(1,291
)
 

 
(1,291
)
Other

 

 
(372
)
 
(372
)
Balances, November 30, 2016
$
552

 
$
147,625

 
$
10,574

 
$
158,751



No goodwill has been allocated to our Nitrogen Production or Foods segments, which consist of investments accounted for under the equity method.
    
Intangible assets subject to amortization primarily include customer lists, trademarks and non-compete agreements, and are amortized over their respective useful lives (ranging from 2 to 30 years). Information regarding intangible assets that are included in other assets on our Consolidated Balance Sheets is as follows:
 
November 30,
2016
 
August 31,
2016
 
Carrying Amount
 
Accumulated Amortization
 
Net
 
Carrying Amount
 
Accumulated Amortization
 
Net
 
(Dollars in thousands)
Customer lists
$
48,818

 
$
(13,039
)
 
$
35,779

 
$
51,554

 
$
(15,550
)
 
$
36,004

Trademarks and other intangible assets
31,567

 
(23,869
)
 
7,698

 
35,015

 
(26,253
)
 
8,762

Total intangible assets
$
80,385

 
$
(36,908
)
 
$
43,477

 
$
86,569

 
$
(41,803
)
 
$
44,766



Total amortization expense for intangible assets during the three months ended November 30, 2016 and 2015 was $1.3 million and $1.7 million, respectively. The estimated annual amortization expense related to intangible assets subject to amortization for the next five years is as follows:
 
(Dollars in thousands)
Year 1
$
3,906

Year 2
3,885

Year 3
3,862

Year 4
3,516

Year 5
3,455