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Employee Benefit Plan	12 Months Ended
Employee Benefit Plan	Dec. 31, 2011
Employee Benefit Plan [Abstract]
Employee Benefit Plan	13. Employee benefit plan The Company has a 401(k) Plan for all of its employees. The 401(k) Plan allows eligible employees to defer, at the employee's discretion, up to 50% of their pretax compensation up to the IRS annual limit. The Company has a 401(k) matching program whereby the Company may, at its discretion, match a portion of an employee's contributions, not to exceed a prescribed annual limit. Under this matching program, the Company contributed a total of approximately $1,362,000 in 2011, $822,000 in 2010 and $798,000 in 2009.

The entire disclosure for pension and other postretirement benefits.

+ References

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