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Significant Accounting Policies Textual (Details) (USD $)
In Millions, except Share data, unless otherwise specified
 12 Months Ended
Mar. 29, 2014
numberoffranchiselocations
numberofautomotiverepaircenters
numberofstores
Mar. 30, 2013
Mar. 31, 2012
Significant Accounting Policies (Textual) [Abstract]      
Company operated stores 953    
Franchised locations 3    
Dealer-operated automotive repair centers 14    
Company reported results minimum 52 weeks    
Company reported results maximum 53 weeks    
Company reported results actual 52 weeks 52 weeks 53 weeks
Maturity period of cash equivalents three months or less    
Number of shares surrendered in settlement of stock options exercised 0 43,000 386,000
Number of stock options exercised in settlement of surrendered shares 0 113,000 563,000
Vesting period for option awards 4 years    
Weighted average fair value of options granted $ 10.10 $ 8.67 $ 8.41
Stock based compensation expense $ 3.6 $ 3.1 $ 2.7
Income tax benefit related to stock based compensation $ 1.3 $ 1.2 $ 1.0
Advertising expenses amortization period 2 months    
Buildings and Improvements [Member] | Maximum [Member]
      
Property, Plant and Equipment [Line Items]      
Property, Plant and Equipment, Useful Life, Maximum, years 39 years    
Buildings and Improvements [Member] | Minimum [Member]
      
Property, Plant and Equipment [Line Items]      
Property, Plant and Equipment, Useful Life, Maximum, years 10 years    
Machinery and Equipment [Member] | Maximum [Member]
      
Property, Plant and Equipment [Line Items]      
Property, Plant and Equipment, Useful Life, Maximum, years 15 years    
Machinery and Equipment [Member] | Minimum [Member]
      
Property, Plant and Equipment [Line Items]      
Property, Plant and Equipment, Useful Life, Maximum, years 5 years    
Vehicles [Member] | Maximum [Member]
      
Property, Plant and Equipment [Line Items]      
Property, Plant and Equipment, Useful Life, Maximum, years 10 years    
Vehicles [Member] | Minimum [Member]
      
Property, Plant and Equipment [Line Items]      
Property, Plant and Equipment, Useful Life, Maximum, years 5 years    
Software [Member] | Maximum [Member]
      
Property, Plant and Equipment [Line Items]      
Property, Plant and Equipment, Useful Life, Maximum, years 7 years    
Software [Member] | Minimum [Member]
      
Property, Plant and Equipment [Line Items]      
Property, Plant and Equipment, Useful Life, Maximum, years 3 years