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Significant Accounting Policies (Tables) | 12 Months Ended
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Mar. 28, 2015
Significant Accounting Policies [Abstract] |
Company's sales mix |
|  | Year Ended Fiscal March
|  | 2015 |  | 2014 |  | 2013
Brakes |  | 15 | % |  | 15 | % |  | 15 | %
Exhaust |  | 3 |  |  | 4 |  |  | 4 |
Steering |  | 10 |  |  | 9 |  |  | 10 |
Tires |  | 44 |  |  | 44 |  |  | 42 |
Maintenance |  | 28 |  |  | 28 |  |  | 29 |
Total |  | 100 | % |  | 100 | % |  | 100 | %
Weighted average fair value of options assumptions |
|  | Year Ended Fiscal March
|  | 2015 |  | 2014 |  | 2013
Risk-free interest rate |  | 1.23 | % |  | .86 | % |  | .53 | %
Expected life, in years |  | 4 |  |  | 4 |  |  | 4 |
Expected volatility |  | 27.7 | % |  | 29.7 | % |  | 34.0 | %
Expected dividend yield |  | .99 | % |  | .97 | % |  | 1.14 | %

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- Definition Tabular disclosure of product information that are included in the discussion of the nature of an entity's operations. + References No definition available. + Details
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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + 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 (f)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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