| Summary of Financial Assets Subject to Fair Value Measurements on Recurring Basis and Level of Inputs Used in Measurements |
The Company’s financial assets subject to fair value measurements on a recurring basis and the level of inputs used in such measurements were as follows:
|
|
|
March 31, 2018 |
|
|
|
|
Total |
|
|
Level 1 |
|
|
Level 2 |
|
|
Level 3 |
|
|
|
|
(in thousands) |
|
|
Money market funds |
|
$ |
62,085 |
|
|
$ |
62,085 |
|
|
$ |
— |
|
|
$ |
— |
|
|
Total |
|
$ |
62,085 |
|
|
$ |
62,085 |
|
|
$ |
— |
|
|
$ |
— |
|
|
Short-term marketable securities: |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Commercial paper |
|
|
5,428 |
|
|
|
— |
|
|
|
5,428 |
|
|
|
— |
|
|
Corporate debt securities |
|
|
10,140 |
|
|
|
— |
|
|
|
10,140 |
|
|
|
— |
|
|
Asset-backed securities |
|
|
14,404 |
|
|
|
— |
|
|
|
14,404 |
|
|
|
— |
|
|
U.S. government debt securities |
|
|
41,309 |
|
|
|
— |
|
|
|
41,309 |
|
|
|
— |
|
|
Total short-term marketable securities |
|
|
71,281 |
|
|
|
— |
|
|
|
71,281 |
|
|
|
— |
|
|
Total |
|
$ |
133,366 |
|
|
$ |
62,085 |
|
|
$ |
71,281 |
|
|
$ |
— |
|
|
|
|
December 31, 2017 |
|
|
|
|
Total |
|
|
Level 1 |
|
|
Level 2 |
|
|
Level 3 |
|
|
|
|
(in thousands) |
|
|
Money market funds |
|
$ |
5,709 |
|
|
$ |
5,709 |
|
|
$ |
— |
|
|
$ |
— |
|
|
Total |
|
$ |
5,709 |
|
|
$ |
5,709 |
|
|
$ |
— |
|
|
$ |
— |
|
|
Short-term marketable securities: |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Commercial paper |
|
|
6,359 |
|
|
|
— |
|
|
|
6,359 |
|
|
|
— |
|
|
Corporate debt securities |
|
|
16,149 |
|
|
|
— |
|
|
|
16,149 |
|
|
|
— |
|
|
Asset-backed securities |
|
|
14,588 |
|
|
|
— |
|
|
|
14,588 |
|
|
|
— |
|
|
U.S. government debt securities |
|
|
42,116 |
|
|
|
— |
|
|
|
42,116 |
|
|
|
— |
|
|
Long-term marketable securities: |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Asset-backed securities |
|
|
2,742 |
|
|
|
— |
|
|
|
2,742 |
|
|
|
— |
|
|
U.S. government debt securities |
|
|
2,376 |
|
|
|
— |
|
|
|
2,376 |
|
|
|
— |
|
|
Total marketable securities |
|
|
84,330 |
|
|
|
— |
|
|
|
84,330 |
|
|
|
— |
|
|
Total |
|
$ |
90,039 |
|
|
$ |
5,709 |
|
|
$ |
84,330 |
|
|
$ |
— |
|
|