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Significant Accounting Policies (Tables)

12 Months Ended

Mar. 31, 2012

Significant Accounting Policies [Abstract]

Company's sales mix

		Year Ended Fiscal March
		2012				2011				2010
Brakes			18	%			18	%			19	%
Exhaust			5				5				6
Steering			10				11				11
Tires			39				38				34
Maintenance			28				28				30
Total			100	%			100	%			100	%

Weighted average fair value of options assumptions

		Year Ended Fiscal March
		2012				2011				2010
Risk-free interest rate			1.11	%			1.52	%			2.24	%
Expected life, in years			4				4				5
Expected volatility			33.9	%			35.1	%			32.8	%
Expected dividend yield			1.03	%			.93	%			1.04	%

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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.

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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

-Topic 718

-SubTopic 10

-Publisher FASB

-Number

-Article

-Subparagraph (f)(2)

-Name Accounting Standards Codification

-Paragraph 2

-Section 50

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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