Commitments and Contingencies - Additional Information 1 (Detail) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
	Sep. 05, 2014	Dec. 31, 2015	Jan. 02, 2015	Dec. 31, 2015	Jan. 02, 2015
Gain Contingencies [Line Items]
Litigation settlement amount	$ 108,712
Proceeds from legal settlement		$ 6,900	$ 6,900	$ 20,600	$ 46,900
Product revenues		156,290	174,299	488,298	536,352
Interest income		500	900	1,800	1,200
Implied license [Member]
Gain Contingencies [Line Items]
Litigation settlement amount	$ 85,132
Satellite Services [Member] | Operating Segments [Member]
Gain Contingencies [Line Items]
Product revenues		6,453	6,149	19,105	27,468
Satellite Services [Member] | Operating Segments [Member] | Implied license [Member]
Gain Contingencies [Line Items]
Product revenues		$ 6,400	$ 6,000	$ 18,800	27,000
Selling, General and Administrative Expenses [Member] | Satellite Services [Member] | Operating Segments [Member]
Gain Contingencies [Line Items]
Litigation settlement amount					$ 18,700