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Goodwill
 9 Months Ended
Jan. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill
Note 7. Goodwill

The changes in the carrying amount of goodwill related to each reportable segment for the nine months ended January 31, 2015 were as follows: 
 
Live Events
 
Commercial
 
Transportation
 
International
 
Total
Balance as of April 26, 2014
$
2,381

 
$
723

 
$
129

 
$
1,325

 
$
4,558

Disposal of automated rigging systems for theatre applications
(22
)
 
—

 
—

 
—

 
(22
)
Acquisition, net of cash required
—

 
—

 
—

 
1,244

 
1,244

Foreign currency translation
(55
)
 
(3
)
 
(54
)
 
(414
)
 
(526
)
Balance as of January 31, 2015
$
2,304

 
$
720

 
$
75

 
$
2,155

 
$
5,254


 
We perform an analysis of goodwill on an annual basis. We performed our annual analysis based on the goodwill amount as of the first business day of our third quarter in fiscal 2015, which was November 2, 2014. The result of the analysis indicated no goodwill impairment existed as of that date.