|
Stock-Based Compensation (Outstanding Awards) (Details) (USD $)
In Thousands, except Per Share data, unless otherwise specified |
3 Months Ended | |||||
|---|---|---|---|---|---|---|
|
Mar. 31, 2012
Common Class A [Member]
|
Dec. 31, 2011
Common Class A [Member]
|
Mar. 31, 2012
Series A [Member]
Y
|
Mar. 31, 2012
Class B [Member]
Y
|
Mar. 31, 2012
Common Class B [Member]
|
Dec. 31, 2011
Common Class B [Member]
|
|
| Outstanding options | 45,654 | 45,223 | Ìý | Ìý | 450 | 450 |
| Outstanding WAEP | $ 12.66 | $ 12.06 | Ìý | Ìý | $ 19.74 | $ 19.74 |
| Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Remaining Contractual Term | Ìý | Ìý | 5.2 | 3.2 | Ìý | Ìý |
| Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term | Ìý | Ìý | 2.9 | 3.2 | Ìý | Ìý |
| Aggregate intrinsic value | $ 304,886 | Ìý | Ìý | Ìý | $ 0 | Ìý |
| Exercisable options | 15,569 | Ìý | Ìý | Ìý | 450 | Ìý |
| Exercisable WAEP | $ 13.21 | Ìý | Ìý | Ìý | $ 19.74 | Ìý |
| Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value | $ 102,806 | Ìý | Ìý | Ìý | $ 0 | Ìý |
| X | ||||||||||
|
- Definition
The total dollar difference between fair values of the underlying shares reserved for issuance and exercise prices of vested portions of options outstanding and currently exercisable under the option plan as of the balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The weighted average period between the balance sheet date and expiration for all vested portions of options outstanding and currently exercisable (or convertible) under the plan, which may be expressed in a decimal value for number of years. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The total dollar difference between fair values of the underlying shares reserved for issuance and exercise prices pertaining to options outstanding under the plan as of the balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The number of shares reserved for issuance under stock option agreements awarded under the plan that validly exist and are outstanding as of the balance sheet date, including vested options. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The weighted average price as of the beginning of the year at which grantees can acquire the shares reserved for issuance under the stock option plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The weighted-average period between the balance sheet date and expiration date for fully vested and expected to vest options outstanding, which may be expressed in a decimal value for number of years. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|