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Investments (Notes)
 12 Months Ended
Jan. 03, 2015
Investments [Abstract]  
Investments
Investments

Marketable Debt Securities

Investments in marketable debt securities were comprised of the following (in thousands):
 
January 3, 2015
 
Amortized
Cost
 
Unrealized
Gains
 
Unrealized
Losses
 
Fair
Value
U.S. Treasury securities
$
32,507

 
$
12

 
$
(23
)
 
$
32,496

Corporate bonds
35,409

 
2

 
(36
)
 
35,375

U.S. Agency bonds
22,545

 
4

 
(10
)
 
22,539

Municipal bonds
11,157

 
2

 
(5
)
 
11,154

Commercial paper
12,487

 
—

 
(1
)
 
12,486

 
$
114,105

 
$
20

 
$
(75
)
 
$
114,050

 
December 28, 2013
 
Amortized
Cost
 
Unrealized
Gains
 
Unrealized
Losses
 
Fair
Value
U.S. Treasury securities
$
23,975

 
$
15

 
$
(1
)
 
$
23,989

Corporate bonds
35,804

 
3

 
(23
)
 
35,784

U.S. Agency bonds
19,517

 
10

 
(4
)
 
19,523

Municipal bonds
7,474

 
23

 
(2
)
 
7,495

 
$
86,770

 
$
51

 
$
(30
)
 
$
86,791



Maturities of marketable debt securities were as follows (in thousands):
 
January 3, 2015
 
December 28, 2013
 
Amortized
Cost
 
Fair
Value
 
Amortized
Cost
 
Fair
Value
Marketable debt securities – current (due in less than one year)
$
69,607

 
$
69,609

 
$
52,122

 
$
52,159

Marketable debt securities – non-current (due in one to two years)
44,498

 
44,441

 
34,648

 
34,632

 
$
114,105

 
$
114,050

 
$
86,770

 
$
86,791


During 2014, 2013 and 2012, respectively, $54.2 million, $53.3 million and $26.0 million of marketable debt securities matured and were redeemed at face value. During 2014, there were no other-than-temporary declines in market value.

Other Investments

We have a minority equity investment in one of our strategic product-development partners. The carrying value of this investment at January 3, 2015 and December 28, 2013, using the cost method, is $6.0 million and $4.5 million, respectively, and is included in other assets on our consolidated balance sheet.