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Summary of Significant Accounting Policies - Additional Information (Detail) (USD $)
12 Months Ended
Mar. 28, 2015
Mar. 29, 2014
Mar. 30, 2013
Significant Accounting Policies [Line Items]      
Advertising and marketing expense $ 103,600,000us-gaap_MarketingAndAdvertisingExpense $ 65,700,000us-gaap_MarketingAndAdvertisingExpense $ 41,900,000us-gaap_MarketingAndAdvertisingExpense
Cooperative advertising Expenses 8,000,000us-gaap_CooperativeAdvertisingExpense 7,300,000us-gaap_CooperativeAdvertisingExpense 5,100,000us-gaap_CooperativeAdvertisingExpense
Shipping and handling costs 92,600,000us-gaap_ShippingHandlingAndTransportationCosts 78,600,000us-gaap_ShippingHandlingAndTransportationCosts 29,100,000us-gaap_ShippingHandlingAndTransportationCosts
Credit card receivables 15,800,000us-gaap_CreditCardReceivables 16,000,000us-gaap_CreditCardReceivables  
Impairment charges 0us-gaap_GoodwillImpairmentLoss 0us-gaap_GoodwillImpairmentLoss 0us-gaap_GoodwillImpairmentLoss
Non-recourse loan to sole joint venture 0us-gaap_PaymentsForAdvanceToAffiliate 0us-gaap_PaymentsForAdvanceToAffiliate 6,000,000us-gaap_PaymentsForAdvanceToAffiliate
Non-recourse loan annual rate     5.00%us-gaap_RelatedPartyTransactionRate
Forward contracts term, maximum 12 months    
Deferred finance cost 2,100,000us-gaap_DeferredFinanceCostsNet 2,900,000us-gaap_DeferredFinanceCostsNet  
Accumulated amortization of deferred finance cost $ 3,600,000us-gaap_AccumulatedAmortizationDeferredFinanceCosts $ 2,800,000us-gaap_AccumulatedAmortizationDeferredFinanceCosts  
Anti-dilutive securities excluded from computation of earning per share captured in the above table per client request. 699,321us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount 44,256us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount 7,341us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
Equipment, Furniture And Fixtures | Minimum      
Significant Accounting Policies [Line Items]      
Property, plant and equipment, useful life 5 years    
Equipment, Furniture And Fixtures | Maximum      
Significant Accounting Policies [Line Items]      
Property, plant and equipment, useful life 7 years    
Computer Hardware And Software | Minimum      
Significant Accounting Policies [Line Items]      
Property, plant and equipment, useful life 3 years    
Computer Hardware And Software | Maximum      
Significant Accounting Policies [Line Items]      
Property, plant and equipment, useful life 5 years    
In-Store Shops | Minimum      
Significant Accounting Policies [Line Items]      
Property, plant and equipment, useful life 3 years    
In-Store Shops | Maximum      
Significant Accounting Policies [Line Items]      
Property, plant and equipment, useful life 4 years    
Software Development      
Significant Accounting Policies [Line Items]      
Property, plant and equipment, useful life 5 years    
Trademarks      
Significant Accounting Policies [Line Items]      
Intangible asset, useful life 20 years    
Stock Options      
Significant Accounting Policies [Line Items]      
Share-based compensation, contractual term 7 years    
Share-based compensation, vesting period 4 years    
Stock Options | Minimum      
Significant Accounting Policies [Line Items]      
Share-based compensation, contractual term 9 years    
Share-based compensation, holding period 4 years 6 months    
Stock Options | Maximum      
Significant Accounting Policies [Line Items]      
Share-based compensation, contractual term 10 years    
Share-based compensation, holding period 4 years 9 months