Summary of Fair Values of Assets and Liabilities Measured on a Recurring Basis |
The following tables summarize the Company’s assets and liabilities that require fair value measurements on a recurring basis and their respective input levels based on the fair value hierarchy (in thousands):
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Fair Value Measurements at End of Period Using: |
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|
|
Total |
|
|
Quoted Market
Prices for
Identical Assets
(Level 1) |
|
|
Significant
Other
Observable
Inputs
(Level 2) |
|
|
Significant
Unobservable
Inputs
(Level 3) |
|
March 31, 2018 |
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|
|
|
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|
Cash equivalents: |
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|
|
|
|
|
|
|
|
|
|
|
|
|
|
Commercial paper |
|
$ |
2,197 |
|
|
$ |
— |
|
|
$ |
2,197 |
|
|
$ |
— |
|
Asset-backed securities |
|
|
1,099 |
|
|
|
— |
|
|
|
1,099 |
|
|
|
— |
|
|
|
$ |
3,296 |
|
|
$ |
— |
|
|
$ |
3,296 |
|
|
$ |
— |
|
Marketable securities: |
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|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Corporate debt securities |
|
$ |
28,482 |
|
|
$ |
— |
|
|
$ |
28,482 |
|
|
$ |
— |
|
Commercial paper |
|
|
13,801 |
|
|
|
— |
|
|
|
13,801 |
|
|
|
— |
|
Certificates of deposit |
|
|
9,134 |
|
|
|
— |
|
|
|
9,134 |
|
|
|
— |
|
Asset-backed securities |
|
|
4,788 |
|
|
|
— |
|
|
|
4,788 |
|
|
|
— |
|
|
|
$ |
56,205 |
|
|
$ |
— |
|
|
$ |
56,205 |
|
|
$ |
— |
|
|
|
|
|
|
|
Fair Value Measurements at End of Period Using: |
|
|
|
Total |
|
|
Quoted Market
Prices for
Identical Assets
(Level 1) |
|
|
Significant
Other
Observable
Inputs
(Level 2) |
|
|
Significant
Unobservable
Inputs
(Level 3) |
|
December 31, 2017 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Cash equivalents: |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Corporate debt securities |
|
$ |
8,274 |
|
|
$ |
— |
|
|
$ |
8,274 |
|
|
$ |
— |
|
Repurchase agreements |
|
|
5,000 |
|
|
|
— |
|
|
|
5,000 |
|
|
|
— |
|
|
|
$ |
13,274 |
|
|
$ |
— |
|
|
$ |
13,274 |
|
|
$ |
— |
|
Marketable securities: |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Corporate debt securities |
|
$ |
24,713 |
|
|
$ |
— |
|
|
$ |
24,713 |
|
|
$ |
— |
|
Certificates of deposit |
|
|
13,651 |
|
|
|
— |
|
|
|
13,651 |
|
|
|
— |
|
Commercial paper |
|
|
12,329 |
|
|
|
— |
|
|
|
12,329 |
|
|
|
— |
|
Asset-backed securities |
|
|
2,099 |
|
|
|
— |
|
|
|
2,099 |
|
|
|
— |
|
|
|
$ |
52,792 |
|
|
$ |
— |
|
|
$ |
52,792 |
|
|
$ |
— |
|
|