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Goodwill and Other Intangible Assets
6 Months Ended
Feb. 28, 2014
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill and Other Intangible Assets
Goodwill and Other Intangible Assets
The changes in the carrying value of goodwill for the six months ended February 28, 2014 are as follows (in thousands):
 
 
Industrial
 
Energy
 
Engineered
Solutions
 
Total
Balance as of August 31, 2013
 
$
82,611

 
$
341,903

 
$
310,438

 
$
734,952

Purchase accounting adjustments
 

 
(18
)
 

 
(18
)
Impact of changes in foreign currency rates
 
1,376

 
10,729

 
2,743

 
14,848

Balance as of February 28, 2014
 
$
83,987

 
$
352,614

 
$
313,181

 
$
749,782



The gross carrying value and accumulated amortization of the Company’s other intangible assets are as follows (in thousands):
 
 
 
 
February 28, 2014
 
August 31, 2013
 
 
Weighted Average
Amortization
Period (Years)
 
Gross
Carrying
Value
 
Accumulated
Amortization
 
Net
Book
Value
 
Gross
Carrying
Value
 
Accumulated
Amortization
 
Net
Book
Value
Amortizable intangible assets:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Customer relationships
 
15
 
$
325,469

 
$
108,073

 
$
217,396

 
$
318,143

 
$
95,215

 
$
222,928

Patents
 
11
 
30,978

 
20,117

 
10,861

 
30,564

 
18,747

 
11,817

Trademarks and tradenames
 
18
 
24,288

 
8,132

 
16,156

 
24,088

 
7,356

 
16,732

Non-compete agreements and other
 
4
 
7,178

 
6,716

 
462

 
7,034

 
6,458

 
576

Indefinite lived intangible assets:
 

 

 

 

 

 

 

Tradenames
 
N/A
 
127,159

 

 
127,159

 
124,639

 

 
124,639

 
 
 
 
$
515,072

 
$
143,038

 
$
372,034

 
$
504,468

 
$
127,776

 
$
376,692


Amortization expense recorded on the intangible assets listed above was $6.2 million and $12.4 million for three and six months ended February 28, 2014, respectively and $6.0 million and $12.0 million for three and six months ended February 28, 2013, respectively. The Company estimates that amortization expense will be approximately $12.4 million for the remainder of fiscal 2014. Amortization expense for future years is estimated to be as follows: $24.8 million in fiscal 2015, $24.7 million in 2016, $24.1 million in fiscal 2017, $23.3 million in fiscal 2018, $23.1 million in fiscal 2019 and $112.5 million thereafter. These future amortization expense amounts represent estimates, which may change based on future acquisitions, changes in foreign currency exchange rates or other factors.