Geographic and Segment Information - Additional Information (Detail)	3 Months Ended				9 Months Ended
	Sep. 30, 2015 Customer	Jun. 30, 2015 Segments	Mar. 31, 2015 Segments	Sep. 30, 2014 Customer	Sep. 30, 2015 Customer Segments	Sep. 30, 2014 Customer
Revenues from External Customers and Long-Lived Assets [Line Items]
Number of operating segments | Segments		2			2
As Previously Reported [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Number of operating segments | Segments			1
Customer Concentration Risk [Member] | Net Sales [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk, percentage						11.20%
Number of customers greater than ten percent threshold	2			3	2	1
Customer Concentration Risk [Member] | Net Sales [Member] | Top Ten Customers [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk, percentage	61.00%			66.00%	64.00%	60.00%
Number of customers	10			10	10	10
Customer Concentration Risk [Member] | Net Sales [Member] | Top Customer One [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk, percentage	14.70%			13.90%	15.00%
Customer Concentration Risk [Member] | Net Sales [Member] | Top Customer Two [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk, percentage	10.10%			10.70%	10.90%
Customer Concentration Risk [Member] | Net Sales [Member] | Top Customer Three [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk, percentage				10.20%
Geographic Concentration Risk [Member] | Property, Plant and Equipment [Member] | Korea [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk, percentage					96.00%