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Significant Accounting Policies Textual (Details) (USD $) In Millions, except Share data, unless otherwise specified | 12 Months Ended
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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 |  |

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- Definition Represents the number of dealer operated automotive repair centers. + References No definition available. + Details
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- Definition Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 14.F) -URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 14 -Section F + Details
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- Definition The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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