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Accounts Receivable - Schedule of Continuity of Allowance for Doubtful Accounts (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Mar. 25, 2017
Mar. 26, 2016
Mar. 28, 2015
Receivables [Abstract]      
Beginning balance $ 2,155 $ 2,259 $ 1,806
Additional provision recorded 845 190 613
Net write-offs (221) (294) (160)
Ending balance $ 2,779 $ 2,155 $ 2,259