| Cash Equivalents and Marketable Securities |
4. Cash Equivalents and Marketable Securities
Cash equivalents and marketable securities consisted of the following:
|
|
|
September 30, 2018 |
|
|
|
|
Amortized
Cost Basis |
|
|
Unrealized
Gains |
|
|
Unrealized
Losses |
|
|
Fair
Value |
|
|
|
|
(in thousands) |
|
|
Money market funds |
|
$ |
31,879 |
|
|
$ |
– |
|
|
$ |
– |
|
|
$ |
31,879 |
|
|
Commercial paper |
|
|
34,939 |
|
|
|
– |
|
|
|
– |
|
|
|
34,939 |
|
|
Corporate debt securities |
|
|
15,781 |
|
|
|
1 |
|
|
|
(8 |
) |
|
|
15,774 |
|
|
Asset-based securities |
|
|
16,876 |
|
|
|
– |
|
|
|
(12 |
) |
|
|
16,864 |
|
|
U.S. government agencies |
|
|
23,776 |
|
|
|
– |
|
|
|
(9 |
) |
|
|
23,767 |
|
|
Total |
|
|
123,251 |
|
|
|
1 |
|
|
|
(29 |
) |
|
|
123,223 |
|
|
Less amounts classified as cash equivalents |
|
|
(41,626 |
) |
|
|
– |
|
|
|
– |
|
|
|
(41,626 |
) |
|
Total marketable securities |
|
$ |
81,625 |
|
|
$ |
1 |
|
|
$ |
(29 |
) |
|
$ |
81,597 |
|
|
|
|
December 31, 2017 |
|
|
|
|
Amortized
Cost Basis |
|
|
Unrealized
Gains |
|
|
Unrealized
Losses |
|
|
Fair
Value |
|
|
|
|
(in thousands) |
|
|
Money market funds |
|
$ |
6,578 |
|
|
$ |
– |
|
|
$ |
– |
|
|
$ |
6,578 |
|
|
Commercial paper |
|
|
7,689 |
|
|
|
– |
|
|
|
– |
|
|
|
7,689 |
|
|
Corporate debt securities |
|
|
800 |
|
|
|
– |
|
|
|
– |
|
|
|
800 |
|
|
U.S. government agencies |
|
|
3,893 |
|
|
|
– |
|
|
|
– |
|
|
|
3,893 |
|
|
Total |
|
|
18,960 |
|
|
|
– |
|
|
|
– |
|
|
|
18,960 |
|
|
Less amounts classified as cash equivalents |
|
|
(18,960 |
) |
|
|
– |
|
|
|
– |
|
|
|
(18,960 |
) |
|
Total marketable securities |
|
$ |
– |
|
|
$ |
– |
|
|
$ |
– |
|
|
$ |
– |
|
All marketable securities as of September 30, 2018 had maturities of less than one year.
|