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Retirement Savings Plan	9 Months Ended
Retirement Savings Plan	Sep. 30, 2014
Postemployment Benefits [Abstract]
RETIREMENT SAVINGS PLAN	RETIREMENT SAVINGS PLAN The Company has a 401(k) retirement savings plan that covers all eligible U.S. employees. Eligible employees may elect to contribute up to 75% of base salary, subject to ERISA limitations. The Company makes matching contributions equal to 100% of the employee’s contribution up to 4% of the employee's salary. The Company also provides a voluntary, noncontributory defined contribution based on a percentage of eligible employee's salary. Total plan expenses recognized for the three and nine months ended September 30, 2014 and 2013 were $1.4 million and $1.1 million, and $4.4 million and $3.2 million, respectively.