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

Consolidation of inventory relating to land and lot option purchases contracts in which the entity is deemed to be the primary beneficiary of the arrangements and a transaction that did not qualify as a sale of inventory under current accounting standards thus the inventory remained on the entity's balance sheet.

No definition available.

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

4. Inventory [Abstract]

No definition available.

Name:	mho_InventoryAbstract
Namespace Prefix:	mho_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Carrying amount as of the balance sheet date of capitalized model homes and furnishings which will be sold at a later date.

No definition available.

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

Carrying value of capitalized payments made in advance for inventory that is expected to be received within one year or the normal operating cycle, if longer.

No definition available.

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

Carrying amount as of the balance sheet date of capitalized construction costs of homes for future sale.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.6(a))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Name:	us-gaap_InventoryHomesUnderConstruction
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Carrying amount as of the balance sheet date of parcels of land held for sale, and on which the entity has no intention or no further intention to perform construction activities.

Name:	us-gaap_InventoryLandHeldForSale
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Total of (1) improvements, (2) held-for-sale, (3) land and land under development, (4) construction-in-process, (5) mortgage loans held-in-inventory, and (6) other real estate investments which are considered inventory due to being held for sale or disposition.

No definition available.

Name:	us-gaap_InventoryRealEstate
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Carrying amount as of the balance sheet date, net of valuation allowances and impairment losses, of costs of land expected to be developed in the near term plus capitalized costs of development, for purposes of selling completed units to home buyers or commercial or industrial entities..