Geographic and Segment Information - Additional Information (Detail)	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales from the Company's top ten largest customers	60.40%	61.70%	61.70%	61.40%
Sales to one customer, which represents percentage of net sales		14.70%		14.80%
Customer One [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales to one customer, which represents percentage of net sales	11.10%		12.10%
Customer Two [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales to one customer, which represents percentage of net sales	10.50%		10.50%
Korea [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Property, plant and equipment are located in Korea			99.00%