| Summary of Financial Assets Measured at Fair Value on Recurring Basis |
The following tables summarize the Company’s financial assets
measured at fair value on a recurring basis as of December 31,
2016, and 2015 and by level within the fair value hierarchy:
Fair value measurement as of December 31, 2016:
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|
|
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Financial assets
|
|
Total |
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|
Quoted prices in
active markets for
identical assets
(Level 1) |
|
|
Significant other
observable
inputs
(Level 2) |
|
|
Significant
unobservable
inputs
(Level 3) |
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|
Type of Instrument
|
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|
|
|
|
Cash and cash equivalents:
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|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Money market fund and checking accounts
|
|
$ |
12,092 |
|
|
$ |
12,092 |
|
|
$ |
— |
|
|
$ |
— |
|
|
|
|
|
|
|
Available-for-sale marketable
securities:
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|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Money market fund
|
|
|
8,276 |
|
|
|
— |
|
|
|
8,276 |
|
|
|
— |
|
|
|
|
|
|
|
U.S. Treasury securities
|
|
|
2,522 |
|
|
|
— |
|
|
|
2,522 |
|
|
|
— |
|
|
U.S. government agency obligations
|
|
|
3,502 |
|
|
|
— |
|
|
|
3,502 |
|
|
|
— |
|
|
Corporate bonds
|
|
|
16,677 |
|
|
|
— |
|
|
|
16,677 |
|
|
|
— |
|
|
Commercial paper
|
|
|
15,207 |
|
|
|
— |
|
|
|
15,207 |
|
|
|
— |
|
|
|
|
|
|
|
Restricted cash:
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Money market fund
|
|
|
1,469 |
|
|
|
1,469 |
|
|
|
— |
|
|
|
— |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Total financial assets
|
|
$ |
59,745 |
|
|
$ |
13,561 |
|
|
$ |
46,184 |
|
|
$ |
— |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Fair value measurement as of December 31, 2015:
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|
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|
|
|
|
|
|
|
|
|
|
|
|
| Financial assets |
|
Total |
|
|
Quoted prices in
active markets for
identical assets
(Level 1) |
|
|
Significant other
observable
inputs
(Level 2) |
|
|
Significant
unobservable
inputs
(Level 3) |
|
| Type of Instrument |
|
|
|
|
|
Cash and cash equivalents:
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Money market fund, savings account and checking account
|
|
$ |
15,101 |
|
|
$ |
15,101 |
|
|
$ |
— |
|
|
$ |
— |
|
|
|
|
|
|
|
Available-for-sale marketable
securities:
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Money market funds
|
|
|
41,986 |
|
|
|
— |
|
|
|
41,986 |
|
|
|
— |
|
|
U.S. Treasury securities
|
|
|
2,528 |
|
|
|
— |
|
|
|
2,528 |
|
|
|
— |
|
|
U.S. government agency obligations
|
|
|
13,496 |
|
|
|
— |
|
|
|
13,496 |
|
|
|
— |
|
|
Corporate bonds
|
|
|
14,188 |
|
|
|
— |
|
|
|
14,188 |
|
|
|
— |
|
|
Commercial paper
|
|
|
19,442 |
|
|
|
— |
|
|
|
19,442 |
|
|
|
— |
|
|
Restricted cash:
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Bank Certificate of Deposit
|
|
|
700 |
|
|
|
700 |
|
|
|
— |
|
|
|
— |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Total financial assets
|
|
$ |
107,441 |
|
|
$ |
15,801 |
|
|
$ |
91,640 |
|
|
$ |
— |
|
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