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Warranties (Tables)
 9 Months Ended
Sep. 24, 2016
Product Warranties Disclosures [Abstract]  
Components of the warranty accrual

Components of the warranty accrual, which were included in the accompanying condensed consolidated balance sheets with other current liabilities, were as follows (in thousands):

 

 

 

Three Months Ended

 

 

Nine Months Ended

 

 

 

September 24, 2016

 

 

September 26, 2015

 

 

September 24, 2016

 

 

September 26, 2015

 

Balance as of beginning of period

 

$

4,556

 

 

$

3,792

 

 

$

4,504

 

 

$

2,953

 

Accruals for warranties issued during period

 

 

1,100

 

 

 

2,288

 

 

 

3,529

 

 

 

6,240

 

Settlements during the period

 

 

(1,471

)

 

 

(1,789

)

 

 

(3,848

)

 

 

(4,902

)

Balance as of end of period

 

$

4,185

 

 

$

4,291

 

 

$

4,185

 

 

$

4,291