Percent restrictions on payment of dividends per restricted payments basket

No definition available.

Name:	mho_Percentrestrictionsonpaymentofdividends
Namespace Prefix:	mho_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Restrictions on payment of dividends - beginning amount for calculation

+ References

No definition available.

+ Details

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

- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28551-108399

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400

+ Details

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

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
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

No definition available.

+ Details

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

- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(2))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (bbb)(2)
-URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258

+ Details

Name:	us-gaap_DebtInstrumentMaturityDate
Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage price of original principal amount of debt at which debt can be redeemed by the issuer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-Subparagraph e
-URI http://asc.fasb.org/extlink&oid=75038535&loc=d3e64711-112823

+ Details

Name:	us-gaap_DebtInstrumentRedemptionPricePercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage of principal amount of debt redeemed.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentRedemptionPricePercentageOfPrincipalAmountRedeemed
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Disclosure of the amount of equity that is restricted to use by regulation or agreement.

+ References

No definition available.

+ Details

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

- Details

Name:	us-gaap_DebtInstrumentAxis=mho_A2025SeniorNotesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=mho_A2021SeniorNotesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=mho_A2028SeniorNotesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	mho_RestrictedPaymentsBasketCalculationAxis=mho_PercentageofouraggregateconsolidatednetincomeaddedtobaseamountofcalculationMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	mho_RestrictedPaymentsBasketCalculationAxis=mho_PercentageofnetcashproceedsfromsaleofqualifiedequityinterestsaddedtobaseandincomelossamountincalculationMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	mho_RestrictedPaymentsBasketCalculationAxis=mho_PercentageofouraggregateconsolidatednetincomesubtractedfrombaseamountofcalculationMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	mho_RestrictedPaymentsBasketCalculationAxis=mho_BaseofrestrictedpaymentsbasketincomecalculationMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Debt Senior Notes (Details) - USD ($) $ in Thousands	12 Months Ended						24 Months Ended		48 Months Ended
Debt Senior Notes (Details) - USD ($) $ in Thousands	Jan. 31, 2026	Jan. 31, 2025	Jul. 31, 2023	Jul. 31, 2022	Jan. 15, 2021	Dec. 31, 2019	Jan. 31, 2028	Jul. 31, 2025	Jan. 31, 2024	Jul. 31, 2021	Dec. 31, 2018
Debt Instrument [Line Items]
Restricted Payments Basket						$ 264,500					$ 215,200
2025 Senior Notes [Member]
Debt Instrument [Line Items]
Senior notes						$ 250,000
Debt Instrument, Interest Rate, Stated Percentage						5.625%
Debt Instrument, Maturity Date						Aug. 01, 2025
Debt Instrument, Redemption Price, Percentage			101.406%	102.813%				100.00%		104.219%
2021 Senior Notes [Member]
Debt Instrument [Line Items]
Senior notes						$ 300,000
Debt Instrument, Interest Rate, Stated Percentage						6.75%
Debt Instrument, Maturity Date						Jan. 15, 2021
Debt Instrument, Redemption Price, Percentage of Principal Amount Redeemed					100.00%
2028 Senior Notes [Member]
Debt Instrument [Line Items]
Senior notes						$ 400,000
Debt Instrument, Interest Rate, Stated Percentage						4.95%
Debt Instrument, Maturity Date						Feb. 01, 2028
Debt Instrument, Redemption Price, Percentage	101.238%	102.475%							103.713%
Debt Instrument, Redemption Price, Percentage of Principal Amount Redeemed							100.00%
Percentage of our aggregate consolidated net income added to base amount of calculation [Member]
Debt Instrument [Line Items]
Percent restrictions on payment of dividends						50.00%
Percentage of net cash proceeds from sale of qualified equity interests added to base and income/loss amount in calculation [Member]
Debt Instrument [Line Items]
Percent restrictions on payment of dividends						100.00%
Percentage of our aggregate consolidated net income subtracted from base amount of calculation [Member]
Debt Instrument [Line Items]
Percent restrictions on payment of dividends						100.00%
Base of restricted payments basket income calculation [Member]
Debt Instrument [Line Items]
Restrictions on payment of dividends						$ 125,000