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Guarantees and Indemnifications Guarantees (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Guarantees [Abstract]
Total of Loans Covered by Guarantees	$ 544,500	$ 360,400
Total of Guaranteed Loans Inquired About	6,300	2,400
Loan Repurchase Guarantee Liability	1,700	700
Guarantor Obligations, Current Carrying Value	$ 2,400	$ 1,400

X

- Definition

Maximum potential amount of future payments the guarantor could be required to make under the Company's subsidiary loan repurchase guarantees.

+ References

No definition available.

+ Details

Name:	mho_LoanRepurchaseGuaranteeLiability
Namespace Prefix:	mho_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Total of loans covered by the guarantees discussed for which inquiries were made by the purchasers of the loans.

+ References

No definition available.

+ Details

Name:	mho_TotalOfGuaranteedLoansInquiredAbout
Namespace Prefix:	mho_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	instant

X

- Definition

The total amount of loans covered by guarantees that said loans could potentially be repurchased in the case certain conditions occur.

+ References

No definition available.

+ Details

Name:	mho_TotalOfLoansCoveredByGuarantees
Namespace Prefix:	mho_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

The current carrying amount of the liability for the freestanding or embedded guarantor's obligations under the guarantee or each group of similar guarantees.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 460
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482425/460-10-50-4

+ Details

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

X

- References

No definition available.

+ Details

Name:	us-gaap_GuaranteesAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration