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Retirement Plan (Details) (USD $)
In Thousands, unless otherwise specified |
12 Months Ended | ||
|---|---|---|---|
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Dec. 31, 2013
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Dec. 31, 2012
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Dec. 31, 2011
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| Retirement Plan [Abstract] | |||
| Defined Contribution Plan, Cost Recognized | $ 9,422 | $ 6,771 | $ 5,119 |
| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
The amount of the cost recognized during the period for defined contribution plans. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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