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Revenue and Expense (Detail) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Dec. 28, 2012
Dec. 30, 2011
Dec. 28, 2012
Dec. 30, 2011
Loral - ordinary course of business [Member]
       
Revenue and expense        
Revenue $ 0 $ 2,251 $ 0 $ 3,768
Telesat Canada-ordinary course of business [Member]
       
Revenue and expense        
Expense $ 2,467 $ 0 $ 4,453 $ 1,986