| Summary of Cash, Cash Equivalents, Short-Term and Long-Term Investments by Significant Investment Category |
The following tables show the Company’s cash, cash equivalents, short-term and long-term investments by significant investment category as of September 30, 2020 and December 31, 2019 (in thousands):
|
|
|
September 30, 2020
|
|
|
|
|
Adjusted Cost
|
|
|
Unrealized Gains
|
|
|
Unrealized Losses
|
|
|
Fair Value
|
|
|
Cash and Cash Equivalents
|
|
|
Short-Term Investments
|
|
|
Long-Term Investments
|
|
|
Cash
|
|
$
|
870,815
|
|
|
$
|
-
|
|
|
$
|
-
|
|
|
$
|
870,815
|
|
|
$
|
870,815
|
|
|
$
|
-
|
|
|
$
|
-
|
|
|
Level 1:
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Money market funds
|
|
|
423,407
|
|
|
|
-
|
|
|
|
-
|
|
|
|
423,407
|
|
|
|
423,407
|
|
|
|
-
|
|
|
|
-
|
|
|
U.S. Treasury securities
|
|
|
18,242
|
|
|
|
-
|
|
|
|
-
|
|
|
|
18,242
|
|
|
|
-
|
|
|
|
7,199
|
|
|
|
11,043
|
|
|
Total level 1
|
|
|
441,649
|
|
|
|
-
|
|
|
|
-
|
|
|
|
441,649
|
|
|
|
423,407
|
|
|
|
7,199
|
|
|
|
11,043
|
|
|
Level 2:
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
-
|
|
|
|
-
|
|
|
|
-
|
|
|
Corporate notes and bonds
|
|
|
117,377
|
|
|
|
-
|
|
|
|
-
|
|
|
|
117,377
|
|
|
|
-
|
|
|
|
89,760
|
|
|
|
27,617
|
|
|
Asset-backed securities
|
|
|
31,156
|
|
|
|
-
|
|
|
|
-
|
|
|
|
31,156
|
|
|
|
-
|
|
|
|
5,525
|
|
|
|
25,631
|
|
|
U.S. Agency securities
|
|
|
4,283
|
|
|
|
-
|
|
|
|
-
|
|
|
|
4,283
|
|
|
|
-
|
|
|
|
4,283
|
|
|
|
-
|
|
|
Mutual funds
|
|
|
34,407
|
|
|
|
-
|
|
|
|
-
|
|
|
|
34,407
|
|
|
|
-
|
|
|
|
-
|
|
|
|
34,407
|
|
|
Total level 2
|
|
|
187,223
|
|
|
|
-
|
|
|
|
-
|
|
|
|
187,223
|
|
|
|
-
|
|
|
|
99,568
|
|
|
|
87,655
|
|
|
TOTAL
|
|
$
|
1,499,687
|
|
|
$
|
-
|
|
|
$
|
-
|
|
|
$
|
1,499,687
|
|
|
$
|
1,294,222
|
|
|
$
|
106,767
|
|
|
$
|
98,698
|
|
|
|
|
December 31, 2019
|
|
|
|
|
Adjusted Cost
|
|
|
Unrealized Gains
|
|
|
Unrealized Losses
|
|
|
Fair Value
|
|
|
Cash and Cash Equivalents
|
|
|
Short-Term Investments
|
|
|
Long-Term Investments
|
|
|
Cash
|
|
$
|
662,355
|
|
|
$
|
-
|
|
|
$
|
-
|
|
|
$
|
662,355
|
|
|
$
|
662,355
|
|
|
$
|
-
|
|
|
$
|
-
|
|
|
Level 1:
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Money market funds
|
|
|
162,521
|
|
|
|
-
|
|
|
|
-
|
|
|
|
162,521
|
|
|
|
162,521
|
|
|
|
-
|
|
|
|
-
|
|
|
U.S. Treasury securities
|
|
|
9,686
|
|
|
|
-
|
|
|
|
-
|
|
|
|
9,686
|
|
|
|
-
|
|
|
|
1,679
|
|
|
|
8,007
|
|
|
Total level 1
|
|
|
172,207
|
|
|
|
-
|
|
|
|
-
|
|
|
|
172,207
|
|
|
|
162,521
|
|
|
|
1,679
|
|
|
|
8,007
|
|
|
Level 2:
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
-
|
|
|
|
-
|
|
|
|
-
|
|
|
Corporate notes and bonds
|
|
|
132,431
|
|
|
|
-
|
|
|
|
-
|
|
|
|
132,431
|
|
|
|
-
|
|
|
|
104,130
|
|
|
|
28,301
|
|
|
Asset-backed securities
|
|
|
23,614
|
|
|
|
-
|
|
|
|
-
|
|
|
|
23,614
|
|
|
|
-
|
|
|
|
263
|
|
|
|
23,351
|
|
|
U.S. Agency securities
|
|
|
12,352
|
|
|
|
-
|
|
|
|
-
|
|
|
|
12,352
|
|
|
|
-
|
|
|
|
5,965
|
|
|
|
6,387
|
|
|
Mutual funds
|
|
|
28,543
|
|
|
|
-
|
|
|
|
-
|
|
|
|
28,543
|
|
|
|
-
|
|
|
|
-
|
|
|
|
28,543
|
|
|
Total level 2
|
|
|
196,940
|
|
|
|
-
|
|
|
|
-
|
|
|
|
196,940
|
|
|
|
-
|
|
|
|
110,358
|
|
|
|
86,582
|
|
|
TOTAL
|
|
$
|
1,031,502
|
|
|
$
|
-
|
|
|
$
|
-
|
|
|
$
|
1,031,502
|
|
|
$
|
824,876
|
|
|
$
|
112,037
|
|
|
$
|
94,589
|
|
|