Percentage of Accounts Receivable by Significant Customers (Detail) (Accounts Receivable)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Orencia Royalties from Bristol
Concentration Risk [Line Items]
Accounts receivable, percentage by customer	42.00%	31.00%
Bioprocessing Customer A
Concentration Risk [Line Items]
Accounts receivable, percentage by customer	17.00%	21.00%
Bioprocessing Customer C
Concentration Risk [Line Items]
Accounts receivable, percentage by customer	8.00%	5.00%
Tenant improvement allowance due from landlord
Concentration Risk [Line Items]
Accounts receivable, percentage by customer	15.00%
Pfizer
Concentration Risk [Line Items]
Accounts receivable, percentage by customer		38.00%