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Employee Retirement Benefit Plan
12 Months Ended
Dec. 31, 2011
Employee Retirement Benefit Plan [Abstract]  
Employee Retirement Benefit Plan
16. EMPLOYEE RETIREMENT BENEFIT PLAN

The Company maintains a 401(k) defined contribution retirement plan for its eligible U.S. employees. The Company terminated matching contributions on April 18, 2009 and reinstated them on March 1, 2011. Costs charged to operations in connection with the 401(k) plan during 2011 and 2010 aggregated $640 and $0, respectively.