XML 115 R38.htm IDEA: XBRL DOCUMENT
v2.4.0.6

STOCK-BASED COMPENSATION (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2011
Summary of Stock Option Activity Under Equity Compensation Plans | The table below summarizes stock option activity under our equity compensation plans for the year ended December 31, 2011:
|  | Options |  |  | Weighted Average Exercise Price |  |  | Remaining Contractual Life |  |  | Aggregate Intrinsic Value (in thousands) |
Options outstanding at December 31, 2010 |  |  | 253,893 |  |  | $ | 8.15 |  |  |  |  |  |  |  |  |
Exercised |  |  | 217,360 |  |  |  | 8.63 |  |  |  |  |  |  |  |  |
Options outstanding and exercisable at December 31, 2011 |  |  | 36,533 |  |  |  | 5.32 |  |  |  | 1.2 years |  |  | $ | 1,222 |
Summary of Restricted Stock Unit Activity | The table below summarizes restricted stock unit activity for the year ended December 31, 2011:
|  | Restricted Stock Units |  |  | Weighted Average Grant Date Fair Value |
Restricted stock units outstanding at December 31, 2010 |  |  | 1,003,556 |  |  | $ | 25.12 |
Granted |  |  | 204,638 |  |  |  | 36.98 |
Released |  |  | (374,071 | ) |  |  | 24.78 |
Cancelled |  |  | (27,860 | ) |  |  | 26.32 |
Restricted stock units outstanding at December 31, 2011 |  |  | 806,263 |  |  |  | 28.31 |

X
- Definition Disclosure of the number and weighted-average grant date fair value for restricted stock and restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock and restricted stock units that were granted, vested, or forfeited during the year. + References No definition available. + Details
Name: | us-gaap_ScheduleOfSharebasedCompensationRestrictedStockAndRestrictedStockUnitsActivityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for share options (or share units) that were outstanding at the beginning and end of the year, vested and expected to vest, exercisable or convertible at the end of the year, and the number of share options or share units that were granted, exercised or converted, forfeited, and expired during the year. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Topic 718 -SubTopic 10 -Publisher FASB -Number -Article -Subparagraph (c)(1) -Name Accounting Standards Codification -Paragraph 2 -Section 50 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
Name: | us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration