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Commitments and Contingencies (Tables)
9 Months Ended
Sep. 27, 2014
Commitments and Contingencies Disclosure [Abstract]  
Summary of Future Minimum Rental Payments under Operating Leases
Future minimum rental payments under operating leases were as follows as of September 27, 2014:
 
 
Operating
Leases
 
(In thousands)
Remainder of 2014
$
884

2015
3,486

2016
2,672

2017
2,383

2018
2,383

Thereafter
3,177

Total minimum lease payments
$
14,985

Activity Related to the Warranty Accrual
Activity related to the warranty accrual was as follows:
 
 
Three Months Ended
 
Nine Months Ended
 
September 27, 2014
 
September 28, 2013
 
September 27, 2014
 
September 28, 2013
 
(In thousands)
 
(In thousands)
Balance at beginning of period
$
7,602

 
$
6,322

 
$
6,497

 
$
6,057

Provision
1,679

 
773

 
5,444

 
1,832

Warranty usage(1)
(1,356
)
 
(407
)
 
(4,016
)
 
(1,201
)
Balance at end of period
$
7,925

 
$
6,688

 
$
7,925

 
$
6,688

 
(1)
Warranty usage includes costs incurred for warranty obligations.