|
Investment Securities (Details 5) (USD $)
In Thousands, unless otherwise specified |
Dec. 31, 2012
|
Dec. 31, 2011
|
|---|---|---|
| Fair value of marketable securities | ||
| Total marketable investment securities - current | $ 815,951 | $ 1,082,407 |
| Total marketable investment securities | 823,480 | 1,086,346 |
| Debt security | 655,000 | |
|
Corporate Bonds
|
||
| Fair value of marketable securities | ||
| Total marketable investment securities - current | 654,096 | 561,149 |
| Debt security | 654,096 | 561,149 |
|
VRDNs
|
||
| Fair value of marketable securities | ||
| Total marketable investment securities - current | 66,145 | 218,665 |
| Debt security | 66,145 | 218,665 |
|
Fair value measurements on recurring basis | Total
|
||
| Fair value of marketable securities | ||
| Cash equivalents (including restricted) | 533,943 | 543,243 |
| Total marketable investment securities | 823,480 | 1,086,346 |
|
Fair value measurements on recurring basis | Total | Corporate Bonds
|
||
| Fair value of marketable securities | ||
| Debt security | 654,096 | 561,149 |
|
Fair value measurements on recurring basis | Total | VRDNs
|
||
| Fair value of marketable securities | ||
| Debt security | 66,145 | 218,665 |
|
Fair value measurements on recurring basis | Total | Other (including restricted)
|
||
| Fair value of marketable securities | ||
| Debt security | 46,951 | 90,442 |
|
Fair value measurements on recurring basis | Total | Equity securities-Strategic
|
||
| Fair value of marketable securities | ||
| Equity security | 56,288 | 216,090 |
|
Fair value measurements on recurring basis | Level 1
|
||
| Fair value of marketable securities | ||
| Cash equivalents (including restricted) | 23,621 | 16,197 |
| Total marketable investment securities | 56,288 | 216,090 |
|
Fair value measurements on recurring basis | Level 1 | Equity securities-Strategic
|
||
| Fair value of marketable securities | ||
| Equity security | 56,288 | 216,090 |
|
Fair value measurements on recurring basis | Level 2
|
||
| Fair value of marketable securities | ||
| Cash equivalents (including restricted) | 510,322 | 527,046 |
| Total marketable investment securities | 767,192 | 870,256 |
|
Fair value measurements on recurring basis | Level 2 | Corporate Bonds
|
||
| Fair value of marketable securities | ||
| Debt security | 654,096 | 561,149 |
|
Fair value measurements on recurring basis | Level 2 | VRDNs
|
||
| Fair value of marketable securities | ||
| Debt security | 66,145 | 218,665 |
|
Fair value measurements on recurring basis | Level 2 | Other (including restricted)
|
||
| Fair value of marketable securities | ||
| Debt security | $ 46,951 | $ 90,442 |