| Investments |
8. Investments
The following table summarizes the Company's cash equivalents and investments:
|
|
|
December 31, 2014
|
|
|
|
|
Amortized
Cost
|
|
Gross
Unrealized
Gains
|
|
Gross
Unrealized
Losses
|
|
Estimated
Fair
Value
|
|
|
|
|
(in thousands)
|
|
|
Cash equivalents:
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Money market funds
|
|
$
|
357
|
|
$
|
—
|
|
$
|
—
|
|
$
|
357
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Short-term investments:
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Certificates of deposit
|
|
|
2,934
|
|
|
—
|
|
|
—
|
|
|
2,934
|
|
|
U.S treasury notes
|
|
|
9,020
|
|
|
4
|
|
|
—
|
|
|
9,024
|
|
|
U.S. government agency securities
|
|
|
8,853
|
|
|
—
|
|
|
(8
|
)
|
|
8,845
|
|
|
Long-term investments:
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Certificates of deposit
|
|
|
1,848
|
|
|
—
|
|
|
—
|
|
|
1,848
|
|
|
U.S. treasury notes
|
|
|
2,494
|
|
|
—
|
|
|
(5
|
)
|
|
2,489
|
|
|
U.S. government agency securities
|
|
|
31,454
|
|
|
—
|
|
|
(50
|
)
|
|
31,404
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Total
|
|
$
|
56,960
|
|
$
|
4
|
|
$
|
(63
|
)
|
$
|
56,901
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
December 31, 2013
|
|
|
|
|
Amortized
Cost
|
|
Gross
Unrealized
Gains
|
|
Gross
Unrealized
Losses
|
|
Estimated
Fair
Value
|
|
|
|
|
(in thousands)
|
|
|
Cash equivalents:
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Money market funds
|
|
$
|
5,356
|
|
$
|
—
|
|
$
|
—
|
|
$
|
5,356
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Short-term investments:
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
U.S treasury notes
|
|
|
2,071
|
|
|
—
|
|
|
—
|
|
|
2,071
|
|
|
U.S. government agency securities
|
|
|
1,454
|
|
|
—
|
|
|
—
|
|
|
1,454
|
|
|
Long-term investments:
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Certificates of deposit
|
|
|
238
|
|
|
—
|
|
|
—
|
|
|
238
|
|
|
U.S. treasury notes
|
|
|
9,116
|
|
|
3
|
|
|
(2
|
)
|
|
9,117
|
|
|
U.S. government agency securities
|
|
|
8,187
|
|
|
1
|
|
|
(5
|
)
|
|
8,183
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Total
|
|
$
|
26,422
|
|
$
|
4
|
|
$
|
(7
|
)
|
$
|
26,419
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
At December 31, 2014, remaining contractual maturities of available-for-sale investments classified as current on the balance sheet were less than 12 months, and remaining contractual maturities of available-for-sale investments classified as long-term were less than two years.
There were no unrealized gains or losses on investments reclassified from accumulated other comprehensive income to other income (expense) in the Statement of Operations during the year ended December 31, 2014.
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