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Subsequent Events (Details Narrative) - Subsequent Event [Member]	1 Months Ended
	Jan. 31, 2020 USD ($)
Payment for commitments	$ 25,000
Equity investment commitment in limited liability company	250,000
Commitment funded amount paid	$ 125,000

X

- Definition

Commitment funded amount paid.

+ References

No definition available.

+ Details

Name:	MXC_CommitmentFundedAmountPayable
Namespace Prefix:	MXC_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Equity investment commitment in limited liability company.

+ References

No definition available.

+ Details

Name:	MXC_EquityInvestmentCommitmentInLimitedPartnership
Namespace Prefix:	MXC_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Payment for commitments.

+ References

No definition available.

+ Details

Name:	MXC_PaymentForCommitments
Namespace Prefix:	MXC_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Details

Name:	us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: