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Warranty Reserves (Tables)
 12 Months Ended
Apr. 30, 2016
Warranty Reserves  
Summary of warranty reserve activity

 

 

 

 

 

 

 

 

 

 

 

April 30,

 

 

    

2016

    

2015

 

 

 

(In thousands)

 

Beginning balance

 

$
2,653

 

$
1,280

 

Warranty expense

 

 
4,516

 

 
2,919

 

Changes in estimates related to pre-existing warranties

 

 
(424)

 

 

 —

 

Warranty costs settled

 

 
(2,611)

 

 
(1,546)

 

Ending balance

 

$
4,134

 

$
2,653