Segment and Geographic Information - Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Revenues from External Customers and Long-Lived Assets [Line Items]
Product revenue	$ 326,786	$ 295,588	$ 297,310
Service revenue	27,100	28,691	24,604
Long-lived assets	135,686	134,106	135,710
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Product revenue	103,610	87,877	87,166
Service revenue	13,505	13,248	10,796
Long-lived assets	118,619	120,596	121,174
Europe [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Product revenue	104,497	95,376	100,984
Service revenue	6,012	6,083	6,343
Long-lived assets	5,059	4,939	10,811
Japan [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Product revenue	33,763	38,151	45,295
Service revenue	4,103	5,043	4,147
Long-lived assets	1,732	2,229	2,773
Other [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Product revenue	84,916	74,184	63,865
Service revenue	3,480	4,317	3,318
Long-lived assets	$ 10,276	$ 6,342	$ 952