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		6 Months Ended
	Oct. 04, 2013	Sep. 28, 2012	Oct. 04, 2013	Sep. 28, 2012
Telesat Canada - Ordinary course of business [Member]
Related Party Transaction [Line Items]
Expense	$ 1,506	$ 1,496	$ 4,039	$ 1,986
Cash paid			$ 3,519	$ 3,675