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Fair Value of Financial Instruments (Details Narrative) (USD $)	3 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
Fair Value Of Financial Instruments Details Narrative
Asset Retirement Obligations	$ 15,740	$ 3,718

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- Definition

AssetRetirementObligations

+ References

No definition available.

+ Details

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Namespace Prefix:	MXC_
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Balance Type:	debit
Period Type:	duration

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- Details

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Namespace Prefix:	MXC_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration