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Commitment and Contingencies (Details) - USD ($) $ in Thousands | Sep. 30, 2025 | Dec. 31, 2024
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Commitments and Contingencies Disclosure [Abstract] |  |
Letters of credit and completion bonds | $ 567,800 |
Performance bonds outstanding | 471,000 |
Performance letters of credit outstanding | 77,600 |
Financial letters of credit | 13,300 |
Financial letters of credit representing deposits on land and lot purchase agreements | 12,900 |
Financial Bonds | 4,700 |
Corporate Notes | 1,200 |
Unrecorded conditional purchase obligation | 1,610,000 |
Legal Reserve | $ 1,400 | $ 1,200

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- Definition Corporate Notes + References No definition available. + Details
Name: | mho_CorporateNotes
Namespace Prefix: | mho_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Financial Bonds + References No definition available. + Details
Name: | mho_FinancialBonds
Namespace Prefix: | mho_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Financial Letters of Credit + References No definition available. + Details
Name: | mho_FinancialLettersOfCredit
Namespace Prefix: | mho_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Amount of letters of credit and bonds outstanding as of the reporting date. + References No definition available. + Details
Name: | mho_LettersOfCreditAndBonds
Namespace Prefix: | mho_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Outstanding letters of credit in lieu of cash deposits under certain land option contracts. + References No definition available. + Details
Name: | mho_OutstandingLettersOfCreditInLieuOfCashDepositsUnderCertainLandOptionContracts
Namespace Prefix: | mho_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Outstanding performance and surety bonds related to site improvements + References No definition available. + Details
Name: | mho_OutstandingPerformanceBonds
Namespace Prefix: | mho_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Performance letters of credit outstanding + References No definition available. + Details
Name: | mho_PerformanceLettersOfCreditOutstanding
Namespace Prefix: | mho_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
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- Definition Amount of loss contingency liability. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 450 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147483076/450-20-50-1 Reference 2: http://www.xbrl.org/2003/role/recommendedDisclosureRef -Topic 450 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 10 -Publisher FASB -URI https://asc.fasb.org/1943274/2147483076/450-20-50-10 + Details
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- Definition Carrying amount of an option or options to acquire real property. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant