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Benefit Plans	12 Months Ended
Benefit Plans	Dec. 31, 2012
Compensation and Retirement Disclosure [Abstract]
Benefit Plans	Benefit Plans The Company has a 401(k) retirement savings plan, which covers substantially all employees. Employees may voluntarily contribute up to 60% of their compensation, as defined, to the plan. Effective June 1, 2000, the Company adopted a company matching contribution to the 401(k) plan. The Company matched the employee contribution at a rate of 50% of the first 6% of compensation contributed to the plan. In April 2009, the Company suspended its match to employee’s 401(k) plan contributions, but reinstated its matching contributions in April 2010. Company contributions to the plans were $1.4 million, $1.3 million, and $0.9 million, during 2012, 2011 and 2010, respectively.

The entire disclosure for pension and other postretirement benefits.

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