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Inventory and Capitalized Interest Other Inventory Items - Homes under construction not subject to a sale contract (Details) $ in Millions	Dec. 31, 2023 USD ($) homes	Dec. 31, 2022 USD ($) homes
Other Inventory, Gross [Abstract]
Number of Speculative Homes | homes	2,023	1,827
Speculative Homes Carrying Value | $	$ 424.2	$ 431.7

X

- Definition

The number of speculative units (homes not subject to a sales contract) included in homes under construction.

+ References

No definition available.

+ Details

Name:	mho_NumberOfSpeculativeHomes
Namespace Prefix:	mho_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

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- Definition

The carrying value of the speculative homes included in homes under construction.

+ References

No definition available.

+ Details

Name:	mho_SpeculativeHomesCarryingValue
Namespace Prefix:	mho_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

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- References

No definition available.

+ Details

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