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Significant Accounting Policies (Tables) | 12 Months Ended
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Mar. 25, 2017
Significant Accounting Policies [Abstract] |
Company's sales mix |
﻿ |  |  |  |  |  |  |  |  |
﻿ |  |  |  |  |  |  |  |  |
﻿ |  | Year Ended Fiscal March
﻿ |  | 2017 |  | 2016 |  | 2015
﻿Brakes |  | 13 | % |  | 15 | % |  | 15 | %
﻿Exhaust |  | 2 |  |  | 3 |  |  | 3 |
﻿Steering |  | 9 |  |  | 10 |  |  | 10 |
﻿Tires |  | 49 |  |  | 45 |  |  | 44 |
﻿Maintenance |  | 27 |  |  | 27 |  |  | 28 |
﻿Total |  | 100 | % |  | 100 | % |  | 100 | %
﻿
Weighted average fair value of options assumptions |
﻿ |  |  |  |  |  |  |  |  |
﻿ |  |  |  |  |  |  |  |  |
﻿ |  | Year Ended Fiscal March
﻿ |  | 2017 |  | 2016 |  | 2015
﻿Risk-free interest rate |  | 1.20 | % |  | 1.25 | % |  | 1.23 | %
﻿Expected life, in years |  | 4 |  |  | 4 |  |  | 4 |
﻿Expected volatility |  | 25.9 | % |  | 27.2 | % |  | 27.7 | %
﻿Expected dividend yield |  | 1.10 | % |  | 0.96 | % |  | 0.99 | %
﻿

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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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