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Property and Equipment - Components of Property and Equipment (Detail) - USD ($)
$ in Thousands
Mar. 31, 2018
Mar. 25, 2017
Property, Plant and Equipment [Line Items]    
Property and equipment, Gross $ 39,591 $ 39,501
Accumulated depreciation and impairment charges (24,524) (27,895)
Property and equipment, Net 15,067 11,606 [1]
Leasehold Improvements [Member]    
Property, Plant and Equipment [Line Items]    
Property and equipment, Gross 24,082 23,324
Accumulated depreciation and impairment charges (7,500) (7,900)
Equipment [Member]    
Property, Plant and Equipment [Line Items]    
Property and equipment, Gross 317 1,264
Molds [Member]    
Property, Plant and Equipment [Line Items]    
Property and equipment, Gross 34 33
Furniture and Fixtures [Member]    
Property, Plant and Equipment [Line Items]    
Property and equipment, Gross 5,222 4,320
Software and Electronic Equipment [Member]    
Property, Plant and Equipment [Line Items]    
Property and equipment, Gross $ 9,936 $ 10,560
[1] Retrospectively revised (see note 18)