Investments in Marketable Securities (Tables)
|
6 Months Ended |
Jun. 30, 2016 |
|---|
| Investments, Debt and Equity Securities [Abstract] |
|
| Schedule of Amortized Cost and Fair Value of Marketable Securities, Available-for-Sale, by Type of Security |
Amortized cost and fair value of marketable securities,
available-for-sale, by type of security consisted of the following
(in thousands):
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
|
June 30, 2016 |
|
|
December 31, 2015 |
|
| |
|
Amortized
Cost |
|
|
Gross
Unrealized
Gains |
|
|
Gross
Unrealized
Losses |
|
|
Fair
Value
|
|
|
Amortized
Cost |
|
|
Gross
Unrealized
Gains |
|
|
Gross
Unrealized
Losses |
|
|
Fair
Value
|
|
|
Short-term investments:
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
U.S. Treasuries
|
|
$ |
53,278 |
|
|
$ |
35 |
|
|
$ |
— |
|
|
$ |
53,313 |
|
|
$ |
62,343 |
|
|
$ |
— |
|
|
$ |
(71 |
) |
|
$ |
62,272 |
|
|
U.S. Government Sponsored Entities
|
|
|
8,509 |
|
|
|
7 |
|
|
|
— |
|
|
|
8,516 |
|
|
|
17,571 |
|
|
|
— |
|
|
|
(12 |
) |
|
|
17,559 |
|
|
Corporate debt securities
|
|
|
19,939 |
|
|
|
7 |
|
|
|
— |
|
|
|
19,946 |
|
|
|
29 |
|
|
|
— |
|
|
|
— |
|
|
|
29 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
$ |
81,726 |
|
|
$ |
49 |
|
|
$ |
— |
|
|
$ |
81,775 |
|
|
$ |
79,943 |
|
|
$ |
— |
|
|
$ |
(83 |
) |
|
$ |
79,860 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Long-term investments:
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
U.S. Treasuries
|
|
$ |
21,176 |
|
|
$ |
250 |
|
|
$ |
— |
|
|
$ |
21,426 |
|
|
$ |
15,283 |
|
|
$ |
— |
|
|
$ |
(112 |
) |
|
$ |
15,171 |
|
|
U.S. Government Sponsored Entities
|
|
|
15,919 |
|
|
|
48 |
|
|
|
— |
|
|
|
15,967 |
|
|
|
12,107 |
|
|
|
— |
|
|
|
(85 |
) |
|
|
12,022 |
|
|
Corporate debt securities
|
|
|
16,412 |
|
|
|
503 |
|
|
|
(39 |
) |
|
|
16,876 |
|
|
|
17,219 |
|
|
|
5 |
|
|
|
(519 |
) |
|
|
16,705 |
|
|
Asset-backed securities and other
|
|
|
9,839 |
|
|
|
128 |
|
|
|
(58 |
) |
|
|
9,909 |
|
|
|
10,649 |
|
|
|
— |
|
|
|
(152 |
) |
|
|
10,497 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
$ |
63,346 |
|
|
$ |
929 |
|
|
$ |
(97 |
) |
|
$ |
64,178 |
|
|
$ |
55,258 |
|
|
$ |
5 |
|
|
$ |
(868 |
) |
|
$ |
54,395 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Amortized Cost and Fair Value of Investments in Available for Sale Securities |
The amortized cost and fair value of the Company’s
investments in available-for-sale securities that have been in a
continuous unrealized loss position consisted of the following (in
thousands):
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
|
June 30, 2016 |
|
|
December 31, 2015 |
|
| |
|
Unrealized
Loss |
|
|
Fair Value |
|
|
Unrealized
Loss |
|
|
Fair Value |
|
|
Less than 12 months
|
|
$ |
(72 |
) |
|
$ |
4,607 |
|
|
$ |
(951 |
) |
|
$ |
129,117 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
12 months or longer
|
|
$ |
(25 |
) |
|
$ |
1,879 |
|
|
$ |
— |
|
|
$ |
— |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Gross Realized Gains and Losses from Sale of Available for Sale Securities |
Gross realized gains and gross realized losses from the sales of
the Company’s available-for-sale securities consisted of the
following (in thousands):
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
|
Three Months Ended
June 30, |
|
|
Six Months Ended
June 30, |
|
| |
|
2016 |
|
|
2015 |
|
|
2016 |
|
|
2015 |
|
|
Gross realized gain (1)
|
|
$ |
20 |
|
|
$ |
56 |
|
|
$ |
20 |
|
|
$ |
133 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Gross realized loss (1)
|
|
$ |
— |
|
|
$ |
— |
|
|
$ |
(155 |
) |
|
$ |
(3 |
) |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| (1) |
Recorded in other income (expense),
net in the condensed consolidated statements of net and
comprehensive income. The cost basis of securities sold were
determined on the specific identification method. |
|
| Schedule of Amortized Cost and Fair Value of Marketable Securities, Available-for-Sale, by Contractual Maturity |
Amortized cost and fair value of marketable securities,
available-for-sale, by contractual maturity consisted of the
following (in thousands):
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
|
June 30, 2016 |
|
|
December 31, 2015 |
|
| |
|
Amortized
Cost |
|
|
Fair Value |
|
|
Amortized
Cost |
|
|
Fair Value |
|
|
Due in one year or less
|
|
$ |
81,726 |
|
|
$ |
81,775 |
|
|
$ |
79,943 |
|
|
$ |
79,860 |
|
|
Due after one year through five years
|
|
|
40,259 |
|
|
|
40,473 |
|
|
|
28,634 |
|
|
|
28,465 |
|
|
Due after five years through ten years
|
|
|
15,002 |
|
|
|
15,529 |
|
|
|
18,020 |
|
|
|
17,466 |
|
|
Due after ten years
|
|
|
8,085 |
|
|
|
8,176 |
|
|
|
8,604 |
|
|
|
8,464 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
$ |
145,072 |
|
|
$ |
145,953 |
|
|
$ |
135,201 |
|
|
$ |
134,255 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Weighted average contractual maturity
|
|
|
3.0 years |
|
|
|
|
|
|
|
3.3 years |
|
|
|
|
|
|