Segments and Geographic Information - Summary of Net Sales and Operating Income, Depreciation and Amortization by Reportable Segment (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Segment Reporting Information [Line Items]
Net sales	$ 867,290	$ 1,066,256	$ 1,692,690	$ 2,001,292
Operating income	109,398	203,655	202,538	350,190
Depreciation	11,500	12,100	23,100	23,800
Amortization	44,624	44,306	89,410	88,604
Inter-Segment Eliminations [Member]
Segment Reporting Information [Line Items]
Net sales	(400)	(400)	(600)	(1,600)
Wireless [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Net sales	515,200	724,900	1,011,500	1,352,100
Operating income	70,200	178,900	134,600	306,500
Depreciation	7,100	7,300	14,200	14,200
Amortization	23,100	22,500	46,200	45,000
Enterprise [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Net sales	221,900	218,400	433,200	419,900
Operating income	31,800	30,300	58,700	52,900
Depreciation	2,600	2,800	5,200	5,600
Amortization	17,300	17,400	34,700	34,700
Broadband [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Net sales	130,600	123,400	248,600	230,900
Operating income	7,400	(5,500)	9,200	(9,200)
Depreciation	1,800	2,000	3,700	4,000
Amortization	$ 4,200	$ 4,400	$ 8,500	$ 8,900