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

The Company's 401(k) benefit plan is available to all employees. The Company matches up to 2% of employee compensation for participating employees, subject to certain limitations. Employees are fully vested in employer contributions to this plan after five years. Company contributions to this plan were $316,000 in 2011, $307,000 in 2010 and $313,000 in 2009.