XML 37 R26.htm IDEA: XBRL DOCUMENT v3.10.0.1
Marketable Securities (Tables)
 6 Months Ended
Jul. 01, 2018
Investments, Debt and Equity Securities [Abstract]  
Schedule of Amortized Cost, Gross Unrealized Gains and Losses, and Fair Market Value of AFS Securities
The following tables present the amortized cost, gross unrealized gains and losses, and fair market value of our AFS debt securities as of July 1, 2018, and December 31, 2017:
 
 
July 1, 2018
(In thousands)
 
Amortized Cost
 
Gross unrealized gains
 
Gross unrealized losses
 
Fair Value
Short-term AFS securities
 
 
 
 
 
 
 
 
Corporate debt securities
 
$
120,937

 
$
1

 
$
(453
)
 
$
120,485

U.S Treasury securities
 
101,952

 
—

 
(142
)
 
101,810

U.S. governmental agency securities
 
50,932

 
—

 
(149
)
 
50,783

Commercial paper
 
17,520

 
—

 
—

 
17,520

Certificates of deposit
 
3,193

 
—

 
—

 
3,193

Total short-term AFS securities
 
$
294,534

 
$
1

 
$
(744
)
 
$
293,791

Long-term AFS securities
 
 
 
 
 
 
 

Corporate debt securities
 
$
117,341

 
$
7

 
$
(1,123
)
 
$
116,225

U.S. governmental agency securities
 
91,824

 
—

 
(1,146
)
 
90,678

U.S Treasury securities
 
42,582

 
—

 
(637
)
 
41,945

Total long-term AFS securities
 
$
251,747

 
$
7

 
$
(2,906
)
 
$
248,848


 
 
December 31, 2017
(In thousands)
 
Amortized Cost
 
Gross unrealized gains
 
Gross unrealized losses
 
Fair Value
Short-term AFS securities
 
 
 
 
 
 
 
 
Corporate debt securities
 
$
150,334

 
$
—

 
$
(227
)
 
$
150,107

U.S Treasury securities
 
70,985

 
—

 
(34
)
 
70,951

U.S. governmental agency securities
 
45,819

 
—

 
(179
)
 
45,640

Commercial paper
 
32,591

 
—

 
—

 
32,591

Certificates of deposit
 
9,300

 
—

 
—

 
9,300

Total short-term AFS securities
 
$
309,029

 
$
—

 
$
(440
)
 
$
308,589

Long-term AFS securities
 
 
 
 
 
 
 
 
U.S. governmental agency securities
 
$
97,798

 
$
—

 
$
(1,019
)
 
96,779

Corporate debt securities
 
92,687

 
—

 
(683
)
 
92,004

U.S Treasury securities
 
53,031

 
—

 
(403
)
 
52,628

Total long-term AFS securities
 
$
243,516

 
$
—

 
$
(2,105
)
 
$
241,411
Schedule of AFS Securities in Unrealized Loss Position
The following tables represent the AFS securities as of July 1, 2018 and December 31, 2017, that were in an unrealized loss position, aggregated by investment category and the length of time that individual securities have been in a continuous loss position:
 
 
July 1, 2018
 
 
Less than 12 Months
 
12 Months or Greater
 
Total
(In thousands)
 
Fair Value
 
Gross unrealized losses
 
Fair Value
 
Gross unrealized losses
 
Fair Value
 
Gross unrealized losses
Short-term AFS securities
 
 
 
 
 
 
 
 
 
 
 
 
Corporate debt securities
 
$
97,827

 
$
(347
)
 
$
16,353

 
$
(106
)
 
$
114,180

 
$
(453
)
U.S Treasury securities
 
102,834

 
(142
)
 
—

 
—

 
102,834

 
(142
)
U.S. governmental agency securities
 
17,319

 
(12
)
 
33,465

 
(137
)
 
50,784

 
(149
)
Total short-term AFS securities
 
$
217,980

 
$
(501
)
 
$
49,818

 
$
(243
)
 
$
267,798

 
$
(744
)
Long-term AFS securities
 
 
 
 
 
 
 
 
 
 
 
 
Corporate debt securities
 
$
112,576

 
$
(1,094
)
 
$
1,972

 
$
(29
)
 
$
114,548

 
$
(1,123
)
U.S Treasury securities
 
41,500

 
(637
)
 
—

 
—

 
41,500

 
(637
)
U.S. governmental agency securities
 
32,245

 
(300
)
 
58,432

 
(846
)
 
90,677

 
(1,146
)
Total long-term AFS securities
 
$
186,321

 
$
(2,031
)
 
$
60,404

 
$
(875
)
 
$
246,725

 
$
(2,906
)
 
 
December 31, 2017
 
 
Less than 12 Months
 
12 Months or Greater
 
Total
(In thousands)
 
Fair Value
 
Gross unrealized losses
 
Fair Value
 
Gross unrealized losses
 
Fair Value
 
Gross unrealized losses
Short-term AFS securities
 
 
 
 
 
 
 
 
 
 
 
 
Corporate debt securities
 
$
140,111

 
$
(199
)
 
$
9,996

 
$
(28
)
 
$
150,107

 
$
(227
)
U.S Treasury securities
 
70,951

 
(34
)
 
—

 
—

 
70,951

 
(34
)
U.S. governmental agency securities
 
19,770

 
(50
)
 
25,870

 
(129
)
 
45,640

 
(179
)
Total short-term AFS securities
 
$
230,832

 
$
(283
)
 
$
35,866

 
$
(157
)
 
$
266,698

 
$
(440
)
Long-term AFS securities
 
 
 
 
 
 
 
 
 
 
 
 
Corporate debt securities
 
$
81,118

 
$
(579
)
 
$
10,886

 
$
(104
)
 
$
92,004

 
$
(683
)
U.S Treasury securities
 
23,998

 
(125
)
 
72,781

 
(894
)
 
96,779

 
(1,019
)
U.S. governmental agency securities
 
52,628

 
(403
)
 
—

 
—

 
52,628

 
(403
)
Total long-term AFS securities
 
$
157,744

 
$
(1,107
)
 
$
83,667

 
$
(998
)
 
$
241,411

 
$
(2,105
)