Certain Relationships and Related-Party Transactions - Schedule of Related Party Expenses and Cash Paid (Detail) (Telesat Canada - Ordinary course of business [Member], USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Jan. 03, 2014	Dec. 28, 2012	Jan. 03, 2014	Dec. 28, 2012
Telesat Canada - Ordinary course of business [Member]
Related Party Transaction [Line Items]
Expense	$ 1,847	$ 2,467	$ 5,886	$ 4,453
Cash paid			$ 6,203	$ 5,721