Segment, Customer Concentration and Geographical Information - Company's Customer that Represent 10% or more of Company's Net Revenues (Detail) (Revenue [Member], Customer Concentration Risk [Member])	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Wireless [Member] | Sprint and affiliates [Member]
Revenue from External Customer [Line Items]
Customer concentrating on 10% or more of net revenue	61.50%	46.10%	55.60%	39.60%
Wireless [Member] | Verizon Wireless and affiliates [Member]
Revenue from External Customer [Line Items]
Customer concentrating on 10% or more of net revenue	9.80%	19.40%	14.90%	20.20%
Productivity & Graphics [Member] | Fast Spring [Member]
Revenue from External Customer [Line Items]
Customer concentrating on 10% or more of net revenue	13.60%	7.10%	11.90%	5.10%