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Related Party Transactions - Balance Related to Related Parties (Detail)
 12 Months Ended
Mar. 25, 2017
USD ($)
Mar. 26, 2016
USD ($)
Mar. 28, 2015
USD ($)
Feb. 28, 2015
USD ($)
Feb. 28, 2015
CAD
Related Party Transactions [Abstract]          
Purchases of inventory from supplier related to shareholder   $ 503,000 $ 189,000    
Management fees to related parties $ 154,000 155,000 238,000    
Consultant fees to a related party 150,000 173,000 175,000    
Expense reimbursement to a related party 178,000 201,000 241,000    
Interest expense on cash advance received from controlling shareholder 165,000 165,000 165,000    
Compensation paid to a related party 67,000   136,000    
Accounts payable to supplier related to shareholder   17,000      
Accounts payable to related parties 57,000 38,000 447,000 $ 60,000 CAD 75,000
Interest payable on cash advance received from controlling shareholder $ 24,000 $ 25,000 $ 136,000