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Goodwill and Other Intangibles
3 Months Ended
Aug. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill and Other Intangibles
GOODWILL AND OTHER INTANGIBLES
 
The Company assesses goodwill and other intangible assets with indefinite lives annually or more frequently if impairment indicators are such that the goodwill is more likely than not impaired. The Company continues to monitor impairment indicators in light of changes in market conditions, near and long-term demand for the Company’s products and other relevant factors.

The following table summarizes the activity in Goodwill for the periods indicated: 
 
Three months ended 
 August 31, 2015
 
Twelve months ended
May 31, 2015
 
Three months ended 
 August 31, 2014
Gross beginning balance
$
155.9

 
$
156.0

 
$
156.0

Accumulated impairment
(39.6
)
 
(34.2
)
 
(34.2
)
Beginning balance
$
116.3

 
$
121.8

 
$
121.8

Impairment charge

 
(5.4
)
 

Foreign currency translation
(0.1
)
 
(0.1
)
 
0.0

Gross ending balance
$
155.8

 
$
155.9

 
$
156.0

Accumulated impairment
(39.6
)
 
(39.6
)
 
(34.2
)
Ending balance
$
116.2

 
$
116.3

 
$
121.8



The following table summarizes the activity in Total other intangibles for the periods indicated:
 
Three months ended 
 August 31, 2015
 
Twelve months ended
May 31, 2015
 
Three months ended 
 August 31, 2014
Beginning balance - Other intangibles subject to amortization
$
4.7

 
$
5.8

 
$
5.8

Additions
0.5

 
0.8

 
0.6

Amortization expense
(0.5
)
 
(1.9
)
 
(0.5
)
Total other intangibles subject to amortization,
  net of accumulated amortization of $17.8, $17.3
    and $15.8, respectively
$
4.7

 
$
4.7

 
$
5.9

Total other intangibles not subject to
  amortization
$
2.1

 
$
2.1

 
$
2.1

Total other intangibles
$
6.8

 
$
6.8

 
$
8.0


Amortization expense for Total other intangibles was $0.5 and $0.5 for the three months ended August 31, 2015 and 2014, respectively. Intangible assets with definite lives consist principally of customer lists, covenants not to compete and trademark rights. Intangible assets with definite lives are amortized over their estimated useful lives. The weighted-average remaining useful lives of all amortizable intangible assets is approximately 4 years.