|
Note 3—Short-term Investments
A summary of debt securities by major security type is as follows as of December 31, 2019 (in thousands):
|
|
|
Amortized
Cost
|
|
|
Gross
Unrealized
Gains
|
|
|
Gross
Unrealized
Losses
|
|
|
Fair Value
|
|
|
Debt Securities-available-for-sale:
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
U.S. agency securities
|
|
$
|
1,000
|
|
|
$
|
—
|
|
|
$
|
—
|
|
|
$
|
1,000
|
|
|
U.S. government securities
|
|
|
14,967
|
|
|
|
26
|
|
|
|
—
|
|
|
|
14,993
|
|
|
Total debt securities
|
|
$
|
15,967
|
|
|
$
|
26
|
|
|
$
|
—
|
|
|
$
|
15,993
|
|
All debt securities were due in less than one year.
The following table presents the hierarchy for assets measured at fair value on a recurring basis (in thousands):
|
|
|
Total Fair
Value
|
|
|
Quoted
Market
Prices for
Identical
Assets
(Level 1)
|
|
|
Other
Observable
Inputs
(Level 2)
|
|
|
Unobservable
Inputs
(Level 3)
|
|
|
As of December 31, 2020
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Money market funds
|
|
$
|
18,394
|
|
|
$
|
18,394
|
|
|
$
|
—
|
|
|
$
|
—
|
|
|
As of December 31, 2019
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Money market funds
|
|
$
|
13,219
|
|
|
$
|
13,219
|
|
|
$
|
—
|
|
|
$
|
—
|
|
|
U.S. government securities
|
|
$
|
14,993
|
|
|
$
|
14,993
|
|
|
$
|
—
|
|
|
$
|
—
|
|
|
U.S. agency securities
|
|
$
|
1,000
|
|
|
$
|
—
|
|
|
$
|
1,000
|
|
|
$
|
—
|
|
|