We break down the inputs used to measure fair value for these assets at September 30, 2012 and December 31, 2011 as follows (in thousands):
|
|
At September 30,
2012 |
|
Quoted Prices in
Active Markets
(Level 1) |
|
Significant Other
Observable
Inputs
(Level 2) |
|
Significant
Unobservable
Inputs
(Level 3) |
|
Cash equivalents (1) |
|
$ |
82,863 |
|
$ |
73,064 |
|
$ |
9,799 |
|
$ |
— |
|
Corporate debt securities (2) |
|
190,648 |
|
— |
|
190,648 |
|
— |
|
Debt securities issued by U.S. government agencies (2) |
|
31,151 |
|
— |
|
31,151 |
|
— |
|
Debt securities issued by the U.S. Treasury (2) |
|
13,486 |
|
13,486 |
|
— |
|
— |
|
Debt securities issued by states of the United States and political subdivisions of the states (2) |
|
23,725 |
|
— |
|
23,725 |
|
— |
|
Equity securities (3) |
|
3,190 |
|
3,190 |
|
— |
|
— |
|
Total |
|
$ |
345,063 |
|
$ |
89,740 |
|
$ |
255,323 |
|
$ |
— |
|
|
|
At December 31,
2011 |
|
Quoted Prices in
Active Markets
(Level 1) |
|
Significant Other
Observable
Inputs
(Level 2) |
|
Significant
Unobservable
Inputs
(Level 3) |
|
Cash equivalents (1) |
|
$ |
58,892 |
|
$ |
55,893 |
|
$ |
2,999 |
|
$ |
— |
|
Corporate debt securities (2) |
|
166,922 |
|
— |
|
166,922 |
|
— |
|
Debt securities issued by U.S. government agencies (2) |
|
80,440 |
|
— |
|
80,440 |
|
— |
|
Debt securities issued by the U.S. Treasury (2) |
|
2,356 |
|
2,356 |
|
— |
|
— |
|
Debt securities issued by states of the United States and political subdivisions of the states (2) |
|
28,469 |
|
— |
|
28,469 |
|
— |
|
Equity securities (3) |
|
1,282 |
|
1,282 |
|
— |
|
— |
|
Total |
|
$ |
338,361 |
|
$ |
59,531 |
|
$ |
278,830 |
|
$ |
— |
|
(1) Included in cash and cash equivalents on our condensed consolidated balance sheet.
(2) Included in short-term investments on our condensed consolidated balance sheet.
(3) Included in other current assets on our condensed consolidated balance sheet.
|