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Employee Benefit Plans (Tables) | 12 Months Ended
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Dec. 31, 2011
Employee Benefit Plans [Abstract] |
Matching contributions | The table below sets forth our matching contributions for the past three years (in thousands):
|  | 2011 |  |  | 2010 |  |  | 2009
Matching contributions - 401(k) | $ | 4,015 |  | $ | 3,600 |  | $ | 3,421
Matching contributions - deferred compensation plan |  | 59 |  |  | 18 |  |  | 16

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- Definition Tabular disclosure of matching contributions to the pension plan and deferred compensation plan. + References No definition available. + Details
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- Details
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