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Warranty Reserves (Tables)
 9 Months Ended
Jan. 27, 2018
Warranty Reserves  
Summary of warranty reserve activity

Warranty reserve activity is summarized as follows for the three and nine months ended January 27, 2018 and January 28, 2017, respectively (in thousands):

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Three Months Ended

 

Nine Months Ended

 

 

    

 

January 27,

 

 

January 28,

 

 

January 27,

 

 

January 28,

    

 

 

 

2018

    

 

2017

    

 

2018

    

 

2017

 

Beginning balance

 

$

3,084

 

$

3,688

 

$

3,231

 

$

4,134

 

Warranty expense

 

 

1,347

 

 

245

 

 

2,513

 

 

581

 

Changes in estimates related to pre-existing warranties

 

 

 —

 

 

200

 

 

 —

 

 

1,428

 

Warranty costs settled

 

 

(566)

 

 

(679)

 

 

(1,879)

 

 

(2,689)

 

Ending balance

 

$

3,865

 

$

3,454

 

$

3,865

 

$

3,454