Segment Reporting - Additional Information (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2015 USD ($) Segment	Dec. 31, 2014 USD ($)	Dec. 31, 2013
Segment Reporting Information [Line Items]
Number of operating business segment | Segment	1
Property, plant and equipment, net	$ 71,336	$ 70,368
United States [Member]
Segment Reporting Information [Line Items]
Property, plant and equipment, net	$ 54,200	$ 53,300
Percentage of net book value of property and equipment	76.00%	76.00%
India [Member]
Segment Reporting Information [Line Items]
Property, plant and equipment, net	$ 6,000	$ 6,700
Percentage of net book value of property and equipment	8.00%	10.00%
Germany and Netherlands [Member]
Segment Reporting Information [Line Items]
Property, plant and equipment, net	$ 11,100	$ 10,400
Percentage of net book value of property and equipment	16.00%	14.00%
Revenue [Member] | AstraZeneca [Member] | Customer Concentration Risk [Member]
Segment Reporting Information [Line Items]
Percentage revenue from clients	57.00%	52.00%	17.00%
Revenue [Member] | UCB [Member] | Customer Concentration Risk [Member]
Segment Reporting Information [Line Items]
Percentage revenue from clients	13.00%	16.00%	21.00%
Revenue [Member] | Roche [Member] | Customer Concentration Risk [Member]
Segment Reporting Information [Line Items]
Percentage revenue from clients		11.00%	28.00%
Revenue [Member] | Bayer [Member] | Customer Concentration Risk [Member]
Segment Reporting Information [Line Items]
Percentage revenue from clients			10.00%