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Warranty Reserves (Tables)
 6 Months Ended
Oct. 29, 2016
Warranty Reserves  
Summary of warranty reserve activity

Warranty reserve activity is summarized as follows for the three and six months ended October 29, 2016 and October 31, 2015 (in thousands):

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Three Months Ended

 

Six Months Ended

 

 

    

 

October 29,

 

 

October 31,

 

 

October 29,

 

 

October 31,

    

 

 

 

2016

    

 

2015

    

 

2016

    

 

2015

 

Beginning balance

 

$
5,223

 

$
2,029

 

$
4,134

 

$
2,653

 

Warranty expense

 

 
144

 

 
1,001

 

 
336

 

 
1,708

 

Changes in estimates related to pre-existing warranties

 

 
(179)

 

 

 —

 

 
1,228

 

 
(424)

 

Warranty costs settled

 

 
(1,500)

 

 
(692)

 

 
(2,010)

 

 
(1,599)

 

Ending balance

 

$
3,688

 

$
2,338

 

$
3,688

 

$
2,338