Amortization Expense Charged To Cost And Expenses.

No definition available.

Name:	MEEC_AmortizationExpenseChargedToCostAndExpenses
Namespace Prefix:	MEEC_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Estimated Amortization Cost For Next Five Years.

No definition available.

Name:	MEEC_EstimatedAmortizationCostForNextFiveYears
Namespace Prefix:	MEEC_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Name:	MEEC_LicenseAgreementDetailsNarrativeAbstract
Namespace Prefix:	MEEC_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

No definition available.

Name:	us-gaap_FiniteLivedIntangibleAssetUsefulLife
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration