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Significant Accounting Policies (Details Textual) | Sep. 30, 2012
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Significant Accounting Policies (Textual) [Abstract] |
Common stock in deferred acquisition payment | 5.00%

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- Definition Percentage increase to any class B common stock to be issued for any deferred acquisition payment. + References No definition available. + Details
Name: | mchx_DeferredAcquisitionPaymentsIncreasePercentage
Namespace Prefix: | mchx_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

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- Details
Name: | mchx_SignificantAccountingPoliciesTextualAbstract
Namespace Prefix: | mchx_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration