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Segment Information (Tables)
6 Months Ended
Jun. 29, 2014
Segment Reporting [Abstract]  
Information About Segments
The following table summarizes information about the segments (in thousands):
Three-months Ended    June 29, 2014
MVSD
 
SISD
 
Reconciling Items
 
Consolidated
Product revenue
$
90,069

 
$
12,873

 
$

 
$
102,942

Service revenue
2,207

 
3,653

 

 
5,860

Operating income
34,184

 
4,571

 
(8,033
)
 
30,722

Six-months Ended    June 29, 2014
MVSD
 
SISD
 
Reconciling Items
 
Consolidated
Product revenue
$
167,687

 
$
18,824

 
$

 
$
186,511

Service revenue
5,905

 
7,315

 

 
13,220

Operating income
62,476

 
5,584

 
(14,895
)
 
53,165

 
Three-months Ended    June 30, 2013
MVSD
 
SISD
 
Reconciling Items
 
Consolidated
Product revenue
$
72,012

 
$
7,686

 
$

 
$
79,698

Service revenue
2,301

 
4,511

 

 
6,812

Operating income
23,527

 
2,227

 
(5,581
)
 
20,173

Six-months Ended    June 30, 2013
MVSD
 
SISD
 
Reconciling Items
 
Consolidated
Product revenue
$
140,331

 
$
14,039

 
$

 
$
154,370

Service revenue
4,393

 
8,639

 

 
13,032

Operating income
45,603

 
3,959

 
(11,408
)
 
38,154