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Share Based Compensation (A summary of the status of and changes in nonvested stock options granted) (Details) (USD $) | 12 Months Ended
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Mar. 28, 2015 | Mar. 29, 2014 | Mar. 30, 2013
A summary of the status of and changes in nonvested stock options granted |  |  |
Non-vested, shares, beginning balance | 612,829 mnro_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsNonvestedOptionsBalance | 879,197 mnro_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsNonvestedOptionsBalance | 722,075 mnro_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsNonvestedOptionsBalance
Granted, shares | 211,225 mnro_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsNonvestedOptionsGrantsInPeriod | 181,400 mnro_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsNonvestedOptionsGrantsInPeriod | 511,600 mnro_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsNonvestedOptionsGrantsInPeriod
Vested, shares | (382,197)mnro_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsNonvestedOptionsVestedInPeriod | (417,743)mnro_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsNonvestedOptionsVestedInPeriod | (332,566)mnro_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsNonvestedOptionsVestedInPeriod
Canceled, shares | (22,128)mnro_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsNonvestedOptionsCanceledInPeriod | (30,025)mnro_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsNonvestedOptionsCanceledInPeriod | (21,912)mnro_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsNonvestedOptionsCanceledInPeriod
Non-vested, shares, ending balance | 419,729 mnro_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsNonvestedOptionsBalance | 612,829 mnro_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsNonvestedOptionsBalance | 879,197 mnro_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsNonvestedOptionsBalance
Weighted average grant date fair value, beginning of period | $ 8.88 mnro_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsNonvestedOptionsWeightedAverageBalanceFairValue | $ 8.52 mnro_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsNonvestedOptionsWeightedAverageBalanceFairValue | $ 8.16 mnro_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsNonvestedOptionsWeightedAverageBalanceFairValue
Weighted average grant date fair value, granted | $ 11.27 mnro_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsNonvestedOptionsWeightedAverageGrantsInPeriodFairValue | $ 10.11 mnro_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsNonvestedOptionsWeightedAverageGrantsInPeriodFairValue | $ 8.67 mnro_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsNonvestedOptionsWeightedAverageGrantsInPeriodFairValue
Weighted average grant date fair value, vested | $ 9.22 mnro_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsNonvestedOptionsWeightedAverageVestedInPeriodFairValue | $ 8.66 mnro_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsNonvestedOptionsWeightedAverageVestedInPeriodFairValue | $ 7.98 mnro_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsNonvestedOptionsWeightedAverageVestedInPeriodFairValue
Weighted average grant date fair value, canceled | $ 10.37 mnro_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsNonvestedOptionsWeightedAverageCanceledInPeriodFairValue | $ 8.90 mnro_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsNonvestedOptionsWeightedAverageCanceledInPeriodFairValue | $ 8.26 mnro_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsNonvestedOptionsWeightedAverageCanceledInPeriodFairValue
Weighted average grant date fair value, end of period | $ 9.70 mnro_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsNonvestedOptionsWeightedAverageBalanceFairValue | $ 8.88 mnro_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsNonvestedOptionsWeightedAverageBalanceFairValue | $ 8.52 mnro_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsNonvestedOptionsWeightedAverageBalanceFairValue

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- Definition The number of shares of non-vested stock options granted that validly exist and are outstanding as of the balance sheet date. + References No definition available. + Details
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Period Type: | instant

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- Definition The number of shares of non-vested stock options canceled during the period. + References No definition available. + Details
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- Definition The number of shares of non-vested stock options granted during the period. + References No definition available. + Details
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- Details
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- Definition The number of shares of non-vested stock options vested during the period. + References No definition available. + Details
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- Definition The weighted average fair value of non-vested stock options granted that validly exist and are outstanding as of the balance sheet date. + References No definition available. + Details
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- Definition The weighted average fair value of non-vested stock options canceled during the period. + References No definition available. + Details
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- Definition The weighted average fair value of non-vested stock options granted during the period. + References No definition available. + Details
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- Definition The weighted average fair value of non-vested stock options vested during the period. + References No definition available. + Details
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