|
Balance Sheet Components (Schedule Of Available-For-Sale Short-Term) (Details) (USD $)
In Thousands, unless otherwise specified |
9 Months Ended | 12 Months Ended |
|---|---|---|
|
Sep. 29, 2013
|
Dec. 31, 2012
|
|
| Schedule of Available-for-sale Securities [Line Items] | ||
| Cost | $ 140,903 | $ 227,799 |
| Unrealized Gain | 31 | 48 |
| Unrealized Loss | 0 | (2) |
| Estimated Fair Value | 140,934 | 227,845 |
|
U.S. Treasuries [Member]
|
||
| Schedule of Available-for-sale Securities [Line Items] | ||
| Cost | 140,738 | 225,016 |
| Unrealized Gain | 31 | 48 |
| Unrealized Loss | 0 | (2) |
| Estimated Fair Value | 140,769 | 225,062 |
|
Certificates Of Deposits [Member]
|
||
| Schedule of Available-for-sale Securities [Line Items] | ||
| Cost | 165 | 2,783 |
| Unrealized Gain | 0 | 0 |
| Unrealized Loss | 0 | 0 |
| Estimated Fair Value | $ 165 | $ 2,783 |