Segment, Customer Concentration and Geographical Information - Company's Customers that Represent 10% or More of Company's Net Revenues (Detail) - Revenues [Member] - Customer Concentration Risk [Member]	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Wireless [Member] | Sprint and Affiliates [Member]
Revenue from External Customer [Line Items]
Customer concentrating on 10% or more of net revenue	64.60%	65.20%	64.80%	64.90%
Graphics [Member] | FastSpring [Member]
Revenue from External Customer [Line Items]
Customer concentrating on 10% or more of net revenue	11.10%	10.40%	12.30%	9.90%