| Cash Equivalents and Marketable Securities |
4. Cash Equivalents and Marketable Securities
Cash equivalents and marketable securities consisted of the following:
|
|
|
March 31, 2019
|
|
|
|
|
Amortized
Cost Basis
|
|
|
Unrealized
Gains
|
|
|
Fair
Value
|
|
|
|
|
(in thousands)
|
|
|
Money market funds
|
|
$
|
26,721
|
|
|
$
|
–
|
|
|
$
|
26,721
|
|
|
Commercial paper
|
|
|
55,085
|
|
|
|
–
|
|
|
|
55,085
|
|
|
Corporate debt securities
|
|
|
38,977
|
|
|
|
21
|
|
|
|
38,998
|
|
|
Asset-based securities
|
|
|
30,842
|
|
|
|
20
|
|
|
|
30,862
|
|
|
U.S. government agencies
|
|
|
32,740
|
|
|
|
15
|
|
|
|
32,755
|
|
|
Total
|
|
|
184,365
|
|
|
|
56
|
|
|
|
184,421
|
|
|
Less amounts classified as cash equivalents
|
|
|
(26,721
|
)
|
|
|
–
|
|
|
|
(26,721
|
)
|
|
Total marketable securities
|
|
$
|
157,644
|
|
|
$
|
56
|
|
|
$
|
157,700
|
|
|
|
|
December 31, 2018
|
|
|
|
|
Amortized
Cost Basis
|
|
|
Unrealized
Losses
|
|
|
Fair
Value
|
|
|
|
|
(in thousands)
|
|
|
Money market funds
|
|
$
|
116,202
|
|
|
$
|
–
|
|
|
$
|
116,202
|
|
|
Commercial paper
|
|
|
26,625
|
|
|
|
–
|
|
|
|
26,625
|
|
|
Corporate debt securities
|
|
|
11,795
|
|
|
|
(21
|
)
|
|
|
11,774
|
|
|
Asset-based securities
|
|
|
16,920
|
|
|
|
(21
|
)
|
|
|
16,899
|
|
|
U.S. government agencies
|
|
|
23,901
|
|
|
|
(5
|
)
|
|
|
23,896
|
|
|
Total
|
|
|
195,443
|
|
|
|
(47
|
)
|
|
|
195,396
|
|
|
Less amounts classified as cash equivalents
|
|
|
(116,202
|
)
|
|
|
–
|
|
|
|
(116,202
|
)
|
|
Total marketable securities
|
|
$
|
79,241
|
|
|
$
|
(47
|
)
|
|
$
|
79,194
|
|
As of March 31, 2019, $13.7 million of marketable securities had maturities of more than one year and are classified as long-term assets. As of December 31, 2018, no marketable securities had maturities of more than one year.
|