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DEFINED-CONTRIBUTION SAVINGS PLANS	12 Months Ended
DEFINED-CONTRIBUTION SAVINGS PLANS	Dec. 31, 2015
Defined Contribution Pension and Other Postretirement Plans Disclosure [Abstract]
DEFINED-CONTRIBUTION SAVINGS PLANS	DEFINED‑CONTRIBUTION SAVINGS PLANS The Company maintains a defined‑contribution savings plan which is qualified under Section 401(k) of the Internal Revenue Code. The plan covers substantially all full-time U.S. employees. Participating employees may defer a portion of their pretax earnings, up to the Internal Revenue Service annual contribution limit. The Company's expense associated with matching employee contributions, including eBioscience, for the years ended December 31, 2015, 2014 and 2013 totaled $3.5 million, $2.7 million, and $2.8 million respectively. Company contributions to employees vest ratably over four years.