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Inventories - Continuity of Obsolescence Reserve for Inventory (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Mar. 28, 2015
Mar. 29, 2014
Mar. 30, 2013
Inventory Disclosure [Abstract]      
Beginning balance $ 2,514 $ 3,557 $ 4,680
Additional charges 1,545 1,214 1,304
Deductions (1,313) (2,257) (2,427)
Ending balance $ 2,746 $ 2,514 $ 3,557