XML 82 R84.htm IDEA: XBRL DOCUMENT v2.4.0.6

Employee Retirement and Profit Sharing Plans (Details Textual) (USD $)	12 Months Ended
	Mar. 30, 2013 employeeage	Mar. 31, 2012	Mar. 26, 2011
Employee Retirement and Profit Sharing Plans (Textual) [Abstract]
Minimum age criteria for availing defined benefit plans	21
Charges to expense for the Company's matching contributions	$ 615,000	$ 631,000	$ 517,000
Total liability, Deferred Compensation Plan	1,179,000	1,085,000
Charges to expense applicable to the management bonus plan	$ (66,000)	$ 1,730,000	$ 3,338,000
Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Company's general target allocation for the plan	6000.00%
Fixed Income Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Company's general target allocation for the plan	4000.00%

X

- Details

Name:	mnro_EmployeeRetirementAndProfitSharingPlansTextualAbstract
Namespace Prefix:	mnro_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Management bonus plan expense.

+ References

No definition available.

+ Details

Name:	mnro_ManagementBonusPlanExpense
Namespace Prefix:	mnro_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Minimum age criteria for availing defined benefit plans.

+ References

No definition available.

+ Details

Name:	mnro_MinimumAgeCriteriaForAvailingDefinedBenefitPlans
Namespace Prefix:	mnro_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Aggregate carrying value as of the balance sheet date of the liabilities for all deferred compensation arrangements. Represents currently earned compensation under compensation arrangements that is not actually paid until a later date.

+ References

No definition available.

+ Details

Name:	us-gaap_DeferredCompensationLiabilityCurrentAndNoncurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Details

Name:	us-gaap_DefinedBenefitPlanDisclosureLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Target allocation of investments of this type to total plan assets presented on a weighted average basis.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (d)(i)

-URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e1928-114920



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 5

-Subparagraph (c)(i)

-URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e2446-114920

+ Details

Name:	us-gaap_DefinedBenefitPlanTargetPlanAssetAllocations
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The amount of the cost recognized during the period for defined contribution plans.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 70

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6414718&loc=d3e28014-114942



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 132R

-Paragraph 11

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Name:	us-gaap_DefinedContributionPlanCostRecognized
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration