Percentage of Accounts Receivable by Significant Customers (Detail) (Accounts Receivable)	9 Months Ended	12 Months Ended
	Sep. 30, 2014	Dec. 31, 2013
Orencia Royalties from Bristol
Concentration Risk [Line Items]
Accounts receivable, percentage by customer		37.00%
Bioprocessing Customer A
Concentration Risk [Line Items]
Accounts receivable, percentage by customer	30.00%	20.00%
Bioprocessing Customer B
Concentration Risk [Line Items]
Accounts receivable, percentage by customer	17.00%	8.00%
Bioprocessing Customer C
Concentration Risk [Line Items]
Accounts receivable, percentage by customer		15.00%
Tenant improvement allowance due from landlord
Concentration Risk [Line Items]
Accounts receivable, percentage by customer		15.00%
Pfizer Incorporation
Concentration Risk [Line Items]
Accounts receivable, percentage by customer		1.00%