Significant Accounting Policies - Additional Information (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Mar. 31, 2019
Mar. 28, 2020
Mar. 30, 2019
Mar. 31, 2018
Significant Accounting Policies [Line Items]        
Amounts receivable from credit card issuers   $ 600 $ 1,200  
Accounts receivable periods   30 days    
Amortization method of intangible assets   trademarks and tradenames, which are amortized using the straight-line method over a period of 15 to 20 years.    
Intangible assets   $ 5,800 5,200  
Accumulated amortization of intangible assets   900 800  
Asset impairment charges   300 100 $ 2,800
Reimbursement of advertising cost   1,100 1,000 1,100
Advertising and marketing expense   7,500 8,700 $ 9,500
Operating Lease, Liability   78,459    
Operating Lease, Right-of-Use Asset   64,069 0  
Reclassification of deferred gain on lease backs to retained earnings   $ (108,862) $ (98,473)  
Finance lease term   5 years    
Accounting Standards Update 2017-02 [Member]        
Significant Accounting Policies [Line Items]        
Operating Lease, Liability $ 76,800      
Operating Lease, Right-of-Use Asset 76,800      
Deferred Lease Inducements Reclassified To Right Of Use Assets [Member] | Accounting Standards Update 2017-02 [Member]        
Significant Accounting Policies [Line Items]        
Reclassification of deferred lease inducements to right of use assets operating lease 6,800      
Reclassification of deferred straight line rent to operating lease liability 6,800      
Deferred Straight Line Rent Reclassified To Operating Lease Liabilities [Member] | Accounting Standards Update 2017-02 [Member]        
Significant Accounting Policies [Line Items]        
Reclassification of deferred lease inducements to right of use assets operating lease 4,300      
Reclassification of deferred straight line rent to operating lease liability 4,300      
Reclassification Of Deferred Rent To Retained Earnings [Member] | Accounting Standards Update 2017-02 [Member]        
Significant Accounting Policies [Line Items]        
Reclassification of deferred gain on lease backs to retained earnings $ 2,400      
Equity Option [Member]        
Significant Accounting Policies [Line Items]        
Outstanding   704,818 288,000 381,487
Warrant [Member]        
Significant Accounting Policies [Line Items]        
Outstanding   382,693 382,693 382,693
Cost of Goods Sold [Member]        
Significant Accounting Policies [Line Items]        
Foreign exchange gains (losses)   $ 1,200 $ 100 $ 300
Interest and Other Financial Costs [Member]        
Significant Accounting Policies [Line Items]        
Foreign exchange gains (losses)   $ 500 $ 300 $ 100
Maximum [Member]        
Significant Accounting Policies [Line Items]        
Product return, Days   90 days    
Consumer credit receivable charges   9.99%    
Minimum [Member]        
Significant Accounting Policies [Line Items]        
Product return, Days   10 days    
Consumer credit receivable charges   0.00%