|
The following table represents the Company’s available for sale short-term investments by major security type as of December 31, 2018 and December 31, 2017:
|
December 31, 2018
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Maturity by period
|
|
|
|
|
|
|
|
|
Unrealized
|
|
|
Unrealized
|
|
|
Fair Value
|
|
|
Less than 1
|
|
|
|
|
|
|
Available for sale
|
|
Cost Total
|
|
|
gains
|
|
|
(losses)
|
|
|
Total
|
|
|
year
|
|
|
1 to 5 years
|
|
|
Commercial paper
|
|
$
|
35,745
|
|
|
|
272
|
|
|
|
(9
|
)
|
|
|
36,008
|
|
|
|
36,008
|
|
|
|
—
|
|
|
U.S. Treasury and Agency Bonds
|
|
|
3,977
|
|
|
|
15
|
|
|
|
—
|
|
|
|
3,992
|
|
|
|
3,992
|
|
|
|
—
|
|
|
Total
|
|
$
|
39,722
|
|
|
|
287
|
|
|
|
(9
|
)
|
|
|
40,000
|
|
|
|
40,000
|
|
|
|
—
|
|
|
December 31, 2017
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Maturity by period
|
|
|
|
|
|
|
|
|
Unrealized
|
|
|
Unrealized
|
|
|
Fair Value
|
|
|
Less than 1
|
|
|
|
|
|
|
Available for sale
|
|
Cost Total
|
|
|
gains
|
|
|
(losses)
|
|
|
Total
|
|
|
year
|
|
|
1 to 5 years
|
|
|
Commercial paper
|
|
$
|
22,538
|
|
|
|
8
|
|
|
|
(27
|
)
|
|
|
22,519
|
|
|
|
22,519
|
|
|
|
—
|
|
|
U.S. Treasury and Agency Bonds
|
|
|
8,205
|
|
|
|
18
|
|
|
|
(11
|
)
|
|
|
8,212
|
|
|
|
8,212
|
|
|
|
—
|
|
|
Total
|
|
$
|
30,743
|
|
|
|
26
|
|
|
|
(38
|
)
|
|
|
30,731
|
|
|
|
30,731
|
|
|
|
—
|
|
|