| Schedule of cash and available-for-sale investments' adjusted cost, gross unrealized gains, gross unrealized losses and fair value by significant investment category recorded as cash and cash equivalents or short- or long-term investments |
The following tables show the Company’s cash and available-for-sale investments’ adjusted cost, gross unrealized gains, gross unrealized losses and fair value by significant investment category, recorded as cash and cash equivalents or short- or long-term investments as of March 31, 2017 and December 31, 2016 (in thousands):
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
March 31, 2017
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Cash and
|
|
|
|
|
|
|
|
|
|
|
Adjusted
|
|
Unrealized
|
|
Unrealized
|
|
|
|
|
Cash
|
|
Short-term
|
|
Long-term
|
|
|
|
|
Cost
|
|
Gains
|
|
Losses
|
|
Fair Value
|
|
Equivalents
|
|
Investments
|
|
Investments
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Cash
|
|
$
|
18,044
|
|
$
|
—
|
|
$
|
—
|
|
$
|
18,044
|
|
$
|
18,044
|
|
$
|
—
|
|
$
|
—
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Level 1:
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Money market funds
|
|
|
10,171
|
|
|
—
|
|
|
—
|
|
|
10,171
|
|
|
10,171
|
|
|
—
|
|
|
—
|
|
|
U.S. government notes
|
|
|
5,104
|
|
|
—
|
|
|
(7)
|
|
|
5,097
|
|
|
—
|
|
|
3,994
|
|
|
1,103
|
|
|
Subtotal
|
|
|
15,275
|
|
|
—
|
|
|
(7)
|
|
|
15,268
|
|
|
10,171
|
|
|
3,994
|
|
|
1,103
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Level 2:
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Asset-backed securities
|
|
|
2,003
|
|
|
—
|
|
|
(2)
|
|
|
2,001
|
|
|
—
|
|
|
—
|
|
|
2,001
|
|
|
Corporate bonds
|
|
|
9,541
|
|
|
1
|
|
|
(11)
|
|
|
9,531
|
|
|
—
|
|
|
9,531
|
|
|
—
|
|
|
Commercial paper
|
|
|
10,463
|
|
|
—
|
|
|
—
|
|
|
10,463
|
|
|
—
|
|
|
10,463
|
|
|
—
|
|
|
Subtotal
|
|
|
22,007
|
|
|
1
|
|
|
(13)
|
|
|
21,995
|
|
|
—
|
|
|
19,994
|
|
|
2,001
|
|
|
Total
|
|
$
|
55,326
|
|
$
|
1
|
|
$
|
(20)
|
|
$
|
55,307
|
|
$
|
28,215
|
|
$
|
23,988
|
|
$
|
3,104
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
December 31, 2016
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Cash and
|
|
|
|
|
|
|
|
|
|
|
Adjusted
|
|
Unrealized
|
|
Unrealized
|
|
|
|
|
Cash
|
|
Short-term
|
|
Long-term
|
|
|
|
|
Cost
|
|
Gains
|
|
Losses
|
|
Fair Value
|
|
Equivalents
|
|
Investments
|
|
Investments
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Cash
|
|
$
|
24,708
|
|
$
|
—
|
|
$
|
—
|
|
$
|
24,708
|
|
$
|
24,708
|
|
$
|
—
|
|
$
|
—
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Level 1:
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Money market funds
|
|
|
10,105
|
|
|
—
|
|
|
—
|
|
|
10,105
|
|
|
10,105
|
|
|
—
|
|
|
—
|
|
|
U.S. government notes
|
|
|
2,001
|
|
|
—
|
|
|
(1)
|
|
|
2,000
|
|
|
—
|
|
|
2,000
|
|
|
—
|
|
|
Subtotal
|
|
|
12,106
|
|
|
—
|
|
|
(1)
|
|
|
12,105
|
|
|
10,105
|
|
|
2,000
|
|
|
—
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Level 2:
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Asset-backed securities
|
|
|
4,008
|
|
|
—
|
|
|
—
|
|
|
4,008
|
|
|
—
|
|
|
—
|
|
|
4,008
|
|
|
Corporate bonds
|
|
|
13,902
|
|
|
—
|
|
|
(14)
|
|
|
13,888
|
|
|
—
|
|
|
13,888
|
|
|
—
|
|
|
Commercial paper
|
|
|
7,082
|
|
|
—
|
|
|
—
|
|
|
7,082
|
|
|
—
|
|
|
7,082
|
|
|
—
|
|
|
Subtotal
|
|
|
24,992
|
|
|
—
|
|
|
(14)
|
|
|
24,978
|
|
|
—
|
|
|
20,970
|
|
|
4,008
|
|
|
Total
|
|
$
|
61,806
|
|
$
|
—
|
|
$
|
(15)
|
|
$
|
61,791
|
|
$
|
34,813
|
|
$
|
22,970
|
|
$
|
4,008
|
|
|