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Restructuring Charges - Additional Information (Detail) - USD ($)
12 Months Ended
Mar. 25, 2017
Mar. 26, 2016
Mar. 28, 2015
Restructuring Cost and Reserve [Line Items]      
Severance charge     $ 1,400,000
Restructuring charges $ 842,000 $ 754,000 2,604,000
Employee retention related charges     600,000
Loss on sublet of Tamarac facility included in restructuring charges     500,000
Commission costs associated with sublease agreement included in restructuring charges     $ 100,000
Payments for restructuring charges 800,000 1,800,000  
Accounts Payable and Accrued Liabilities [Member]      
Restructuring Cost and Reserve [Line Items]      
Accounts payable and accrued liabilities related to restructuring charges $ 0 $ 300,000