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Additional Information to Stock Options Activity (Details) (USD $)
In Thousands, unless otherwise specified |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
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Jun. 30, 2014
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Jun. 30, 2013
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Jun. 30, 2014
|
Jun. 30, 2013
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| Share Based Compensation Arrangement By Share Based Payment Award [Line Items] | ||||
| Income tax benefit | $ 1,627 | $ 1,724 | $ 2,684 | $ 2,520 |
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Restricted Stock Units
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| Share Based Compensation Arrangement By Share Based Payment Award [Line Items] | ||||
| Intrinsic value | 14,266 | 13,559 | ||
| Income tax benefit | $ 1,551 | $ 2,049 | ||