Annual report pursuant to Section 13 and 15(d)

Employee Benefit Plan

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Employee Benefit Plan
12 Months Ended
Dec. 31, 2011
Employee Benefit Plan [Abstract]  
Employee Benefit Plan

9. Employee Benefit Plan

Defined Contribution Plan

The Company sponsors a 401(k) plan to all eligible full-time employees. The plan allows participants to contribute up to 15% of their compensation and allows discretionary Company contributions as determined by the Company's Board of Directors. Effective January 1, 2006, the Company implemented a discretionary match of up to two percent of participating employee contributions. The employer contribution will vest 20% after two years and 20% each additional year until it is fully vested in year six. Contribution expense to the Company was $3.4 million, $2.9 million and $2.2 million in 2011, 2010 and 2009, respectively.