| 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 March 31, 2020 and December 31, 2019 (in thousands):
|
|
|
March 31, 2020
|
|
|
|
|
Adjusted Cost
|
|
|
Unrealized Gains
|
|
|
Unrealized Losses
|
|
|
Fair Value
|
|
|
Cash and Cash Equivalents
|
|
|
Short-Term Investments
|
|
|
Long-Term Investments
|
|
|
Cash
|
|
$
|
846,649
|
|
|
$
|
-
|
|
|
$
|
-
|
|
|
$
|
846,649
|
|
|
$
|
846,649
|
|
|
$
|
-
|
|
|
$
|
-
|
|
|
Level 1:
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Money market funds
|
|
|
312,117
|
|
|
|
-
|
|
|
|
-
|
|
|
|
312,117
|
|
|
|
312,117
|
|
|
|
-
|
|
|
|
-
|
|
|
U.S. Treasury securities
|
|
|
13,950
|
|
|
|
-
|
|
|
|
-
|
|
|
|
13,950
|
|
|
|
-
|
|
|
|
4,771
|
|
|
|
9,179
|
|
|
Total level 1
|
|
|
326,067
|
|
|
|
-
|
|
|
|
-
|
|
|
|
326,067
|
|
|
|
312,117
|
|
|
|
4,771
|
|
|
|
9,179
|
|
|
Level 2:
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
-
|
|
|
|
-
|
|
|
|
-
|
|
|
Corporate notes and bonds
|
|
|
131,902
|
|
|
|
-
|
|
|
|
-
|
|
|
|
131,902
|
|
|
|
-
|
|
|
|
114,583
|
|
|
|
17,319
|
|
|
Asset-backed securities
|
|
|
23,908
|
|
|
|
-
|
|
|
|
-
|
|
|
|
23,908
|
|
|
|
-
|
|
|
|
5,262
|
|
|
|
18,646
|
|
|
U.S. Agency securities
|
|
|
10,134
|
|
|
|
-
|
|
|
|
-
|
|
|
|
10,134
|
|
|
|
-
|
|
|
|
6,042
|
|
|
|
4,092
|
|
|
Mutual funds
|
|
|
28,102
|
|
|
|
-
|
|
|
|
-
|
|
|
|
28,102
|
|
|
|
-
|
|
|
|
-
|
|
|
|
28,102
|
|
|
Total level 2
|
|
|
194,046
|
|
|
|
-
|
|
|
|
-
|
|
|
|
194,046
|
|
|
|
-
|
|
|
|
125,887
|
|
|
|
68,159
|
|
|
TOTAL
|
|
$
|
1,366,762
|
|
|
$
|
-
|
|
|
$
|
-
|
|
|
$
|
1,366,762
|
|
|
$
|
1,158,766
|
|
|
$
|
130,658
|
|
|
$
|
77,338
|
|
|
|
|
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
|
|
|