Name:	ifrs-full_DisclosureOfNatureAndExtentOfRisksArisingFromFinancialInstrumentsLineItems
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

The increase (decrease) in other comprehensive income as a result of an decrease in a designated risk component that was reasonably possible at the end of the reporting period. Excludes defined benefit plan obligations.

No definition available.

Name:	maxr_IncreaseDecreaseInOtherComprehensiveIncomeDueToReasonablyPossibleDecreaseInDesignatedRiskComponent
Namespace Prefix:	maxr_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

The increase (decrease) in other comprehensive income as a result of an increase in a designated risk component that was reasonably possible at the end of the reporting period. Excludes defined benefit plan obligations.

No definition available.

Name:	maxr_IncreaseDecreaseInOtherComprehensiveIncomeDueToReasonablyPossibleIncreaseInDesignatedRiskComponent
Namespace Prefix:	maxr_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

The increase (decrease) in profit and loss as a result of an decrease in a designated risk component that was reasonably possible at the end of the reporting period. Excludes defined benefit plan obligations.

No definition available.

Name:	maxr_IncreaseDecreaseInProfitAndLossDueToReasonablyPossibleDecreaseInDesignatedRiskComponent
Namespace Prefix:	maxr_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

The increase (decrease) in profit and loss as a result of an increase in a designated risk component that was reasonably possible at the end of the reporting period. Excludes defined benefit plan obligations.

No definition available.

Name:	maxr_IncreaseDecreaseInProfitAndLossDueToReasonablyPossibleIncreaseInDesignatedRiskComponent
Namespace Prefix:	maxr_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

The reasonably possible percentage of the decrease in the designated risk component used to determine the value of the financial instrument. Excludes defined benefit plan obligations.

No definition available.

Name:	maxr_PercentageOfReasonablyPossibleDecreaseInRiskAssumption
Namespace Prefix:	maxr_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

The reasonably possible percentage of the increase in the designated risk component used to determine the value of the financial instrument. Excludes defined benefit plan obligations.

No definition available.

Name:	maxr_PercentageOfReasonablyPossibleIncreaseInRiskAssumption
Namespace Prefix:	maxr_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

Name:	ifrs-full_TypesOfRisksAxis=ifrs-full_CurrencyRiskMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	ifrs-full_TypesOfRisksAxis=maxr_BritishPoundAgainstCanadianDollarMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	ifrs-full_TypesOfRisksAxis=maxr_U.s.DollarAgainstCanadianDollarMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	ifrs-full_TypesOfRisksAxis=maxr_EuroAgainstCanadianDollarMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	ifrs-full_TypesOfRisksAxis=maxr_NewZealandDollarAgainstCanadianDollarMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	ifrs-full_TypesOfRisksAxis=maxr_EuroAgainstU.s.DollarMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: