Defined Contribution and 401(k)	3 Months Ended
Defined Contribution and 401(k)	Mar. 31, 2013
Postemployment Benefits [Abstract]
DEFINED CONTRIBUTION AND 401(k)	DEFINED CONTRIBUTION AND 401(k) PLANS Defined Contribution Plan The Company provides a noncontributory defined contribution retirement plan for all eligible U.S. employees. Total contributions, which are based on a percentage of the salary of eligible employees, were $0.6 million and $0.5 million, for the three months ended March 31, 2013 and 2012, respectively. 401(k) Plan The Company maintains a retirement savings plan (which qualifies under Section 401(k) of the U.S. Internal Revenue Code) covering all eligible U.S. employees. Under the plan, employees may elect to contribute up to 100% of their cash compensation, subject to ERISA limitations. The Company adopted a Safe Harbor Tiered Match and is required to make matching contributions equal to 100% of the employee’s contribution up to 3% of the employee’s compensation plus matching contributions equal to 50% of the employee’s contribution up to an additional 2% of the employee’s compensation. Total plan expenses recognized in the Company’s consolidated financial statements for the three months ended March 31, 2013 and 2012 were $0.7 million and $0.6 million, respectively.

The entire disclosure for postemployment benefits, which may include supplemental unemployment benefits, obligations recognized for all types of benefits provided to former or inactive employees, their beneficiaries, and covered dependents after employment but before retirement. Disclosure may also include discussion that an obligation for postemployment benefits is not accrued in accordance with regulation only because the amount cannot be reasonably estimated.

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