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EMPLOYEE RETIREMENT PLAN
12 Months Ended
Dec. 31, 2011
EMPLOYEE RETIREMENT PLAN
14.           EMPLOYEE RETIREMENT PLAN
 
We sponsor a defined contribution retirement savings plan that qualifies under Section 401(k) of the Internal Revenue Code. Plan participants may elect to have a portion of their pre-tax compensation contributed to the plan, subject to certain guidelines issued by the Internal Revenue Service. Employer contributions are discretionary and were $0.7 million, $0.8 million and $0.7 million during the years ended December 31, 2011, 2010 and 2009, respectively.