Stockholders' Equity (Details 4) (USD $)
In Thousands, except Share data, unless otherwise specified |
12 Months Ended | ||
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Dec. 31, 2012
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Dec. 31, 2011
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Dec. 31, 2010
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Employee and non-employee stock option exercise data | |||
Employee and non-employee stock options, Number of options exercised (in shares) | 575,944 | 837,690 | 3,335,114 |
Cash received from options exercised | $ 14,290 | $ 24,398 | $ 85,427 |
Total intrinsic value of options exercised | 15,508 | 30,644 | 102,905 |
Tax benefits realized from options exercised | $ 3,054 | $ 11,347 | $ 23,826 |
X | ||||||||||
- Definition
Aggregate proceeds received by the entity during the annual period from exercises of stock or unit options and conversion of similar instruments granted under equity-based payment arrangements. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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X | ||||||||||
- Definition
Disclosure of the aggregate tax benefit realized from the exercise of stock options and the conversion of similar instruments during the annual period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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X | ||||||||||
- Definition
The total accumulated difference between fair values of underlying shares on dates of exercise and exercise price on options which were exercised (or share units converted) into shares during the reporting period under the plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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X | ||||||||||
- Definition
Number of share options (or share units) exercised during the current period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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