| Schedule of the Company's financial assets and liabilities that have been measured at fair value on a recurring basis |
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Description
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|
Total
|
|
Level 1
|
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Level 2
|
|
Level 3
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|
|
|
|
(in thousands)
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|
|
December 31, 2014
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|
|
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|
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Assets:
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Money market funds
|
|
$
|
357
|
|
$
|
357
|
|
$
|
—
|
|
$
|
—
|
|
|
Available-for-sale securities:
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Certificates of deposit
|
|
|
4,782
|
|
|
4,782
|
|
|
—
|
|
|
—
|
|
|
U.S. treasury notes
|
|
|
11,513
|
|
|
11,513
|
|
|
—
|
|
|
—
|
|
|
U.S. government agency securities
|
|
|
40,249
|
|
|
—
|
|
|
40,249
|
|
|
—
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Total assets at fair value
|
|
$
|
56,901
|
|
$
|
16,652
|
|
$
|
40,249
|
|
$
|
—
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
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|
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|
December 31, 2013
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Assets:
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Money market funds
|
|
$
|
5,356
|
|
$
|
5,356
|
|
$
|
—
|
|
$
|
—
|
|
|
Available-for-sale securities:
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Certificates of deposit
|
|
|
238
|
|
|
238
|
|
|
—
|
|
|
—
|
|
|
U.S. treasury notes
|
|
|
11,188
|
|
|
11,188
|
|
|
—
|
|
|
—
|
|
|
U.S. government agency securities
|
|
|
9,637
|
|
|
—
|
|
|
9,637
|
|
|
—
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Total assets at fair value
|
|
$
|
26,419
|
|
$
|
16,782
|
|
$
|
9,637
|
|
$
|
—
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|
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