Accrued litigation settlement liability.

No definition available.

Name:	mchx_AccruedLitigationSettlementLiability
Namespace Prefix:	mchx_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Litigation Settlement Amount

+ References

No definition available.

+ Details

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Namespace Prefix:	mchx_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Loss contingency, maximum earnout amount.

+ References

No definition available.

+ Details

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Namespace Prefix:	mchx_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Loss on litigation related to acquisition.

+ References

No definition available.

+ Details

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Namespace Prefix:	mchx_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The designation of funds furnished by a borrower to a lender to assure future payments of the borrower's real estate taxes and insurance obligations with respect to a mortgaged property. Escrow deposits may be made for a variety of other purposes such as earnest money and contingent payments. This element excludes replacement reserves which are an escrow separately provided for within the US GAAP taxonomy.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Aggregate carrying amount of the estimated litigation liability for known or estimated probable loss from litigation, which may include attorneys' fees and other litigation costs.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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+ Details

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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of loss contingency liability.

+ References

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Period Type:	instant

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- Details

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Balance Type:
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- Details

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Commitments and Contingencies - Additional Information (Detail) - USD ($)		12 Months Ended
	Oct. 21, 2022	Dec. 31, 2025	Jun. 30, 2026	Apr. 14, 2026
Loss Contingencies [Line Items]
Loss related to acquisition		$ 1,400,000
Loss accural		$ 2,100,000
May 14, 2026
Loss Contingencies [Line Items]
Litigation Settlement Amount				$ 750,000
Held in Escrow				250,000
November 16, 2026
Loss Contingencies [Line Items]
Accrued settlement liability				500,000
May 17, 2027
Loss Contingencies [Line Items]
Accrued settlement liability				$ 500,000
Other Current Liabilities
Loss Contingencies [Line Items]
Estimated litigation liability			$ 1,000,000
Other Accrued Expenses
Loss Contingencies [Line Items]
Estimated litigation liability			$ 1,000,000
Share Purchase Agreement
Loss Contingencies [Line Items]
Loss contingency, maximum earnout amount	$ 3,000,000
Escrow Agreement
Loss Contingencies [Line Items]
Loss contingency, maximum earnout amount	$ 1,000,000