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v2.4.1.9

Supplemental Guarantor Information Supplemental Guarantor Information - Income Statement (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 12 Months Ended
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Dec. 31, 2014 | Sep. 30, 2014 | Jun. 30, 2014 | Mar. 31, 2014 | Dec. 31, 2013 | Sep. 30, 2013 | Jun. 30, 2013 | Mar. 31, 2013 | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Revenue |  |  |  |  |  |  |  |  | $ 1,215,180 us-gaap_Revenues | $ 1,036,782 us-gaap_Revenues | $ 761,905 us-gaap_Revenues
Land and housing |  |  |  |  |  |  |  |  | 958,991 mho_LandAndHousingCosts | 824,508 mho_LandAndHousingCosts | 610,540 mho_LandAndHousingCosts
Impairment of inventory and investment in unconsolidated joint ventures |  |  |  |  |  |  |  |  | 3,457 us-gaap_ImpairmentOfRealEstate | 5,805 us-gaap_ImpairmentOfRealEstate | 3,502 us-gaap_ImpairmentOfRealEstate
General and administrative |  |  |  |  |  |  |  |  | 88,830 us-gaap_GeneralAndAdministrativeExpense | 79,494 us-gaap_GeneralAndAdministrativeExpense | 62,627 us-gaap_GeneralAndAdministrativeExpense
Selling |  |  |  |  |  |  |  |  | 81,148 us-gaap_SellingExpense | 68,282 us-gaap_SellingExpense | 56,406 us-gaap_SellingExpense
Equity in income of unconsolidated joint ventures |  |  |  |  |  |  |  |  | (347)us-gaap_IncomeLossFromEquityMethodInvestments | (306)us-gaap_IncomeLossFromEquityMethodInvestments | 0 us-gaap_IncomeLossFromEquityMethodInvestments
Interest |  |  |  |  |  |  |  |  | 13,365 us-gaap_InterestExpense | 15,938 us-gaap_InterestExpense | 16,071 us-gaap_InterestExpense
Loss on Extinguishment of Debt |  |  |  |  |  |  |  |  | 0 us-gaap_GainsLossesOnExtinguishmentOfDebt | 1,726 us-gaap_GainsLossesOnExtinguishmentOfDebt | 0 us-gaap_GainsLossesOnExtinguishmentOfDebt
Total costs and expenses |  |  |  |  |  |  |  |  | 1,145,444 us-gaap_CostsAndExpenses | 995,447 us-gaap_CostsAndExpenses | 749,146 us-gaap_CostsAndExpenses
Income (loss) before income taxes |  |  |  |  |  |  |  |  | 69,736 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic | 41,335 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic | 12,759 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic
Income Tax Expense (Benefit) |  |  |  |  |  |  |  |  | 18,947 us-gaap_IncomeTaxExpenseBenefit | (110,088)us-gaap_IncomeTaxExpenseBenefit | (588)us-gaap_IncomeTaxExpenseBenefit
Equity in subsidiaries |  |  |  |  |  |  |  |  | 0 mho_EquityInIncomeLossOfSubsidiaries | 0 mho_EquityInIncomeLossOfSubsidiaries | 0 mho_EquityInIncomeLossOfSubsidiaries
Net income (loss) |  |  |  |  |  |  |  |  | 50,789 us-gaap_NetIncomeLoss | 151,423 us-gaap_NetIncomeLoss | 13,347 us-gaap_NetIncomeLoss
Preferred Stock Dividends |  |  |  |  |  |  |  |  | 4,875 us-gaap_PreferredStockDividendsIncomeStatementImpact | 3,656 us-gaap_PreferredStockDividendsIncomeStatementImpact | 0 us-gaap_PreferredStockDividendsIncomeStatementImpact
Excess of fair value over book value of preferred shares redeemed |  |  |  |  |  |  |  |  | 0 us-gaap_PreferredStockRedemptionPremium | 2,190 us-gaap_PreferredStockRedemptionPremium | 0 us-gaap_PreferredStockRedemptionPremium
Net Income (Loss) Available to Common Stockholders | 9,767 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | 12,399 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | 12,335 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | 11,413 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | 13,043 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | 124,092 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | 6,045 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | 2,397 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | 45,914 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | 145,577 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | 13,347 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic
Parent [Member] |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 0 us-gaap_Revenues / dei_LegalEntityAxis = us-gaap_ParentMember | 0 us-gaap_Revenues / dei_LegalEntityAxis = us-gaap_ParentMember | 0 us-gaap_Revenues / dei_LegalEntityAxis = us-gaap_ParentMember
Land and housing |  |  |  |  |  |  |  |  | 0 mho_LandAndHousingCosts / dei_LegalEntityAxis = us-gaap_ParentMember | 0 mho_LandAndHousingCosts / dei_LegalEntityAxis = us-gaap_ParentMember | 0 mho_LandAndHousingCosts / dei_LegalEntityAxis = us-gaap_ParentMember
Impairment of inventory and investment in unconsolidated joint ventures |  |  |  |  |  |  |  |  | 0 us-gaap_ImpairmentOfRealEstate / dei_LegalEntityAxis = us-gaap_ParentMember | 0 us-gaap_ImpairmentOfRealEstate / dei_LegalEntityAxis = us-gaap_ParentMember | 0 us-gaap_ImpairmentOfRealEstate / dei_LegalEntityAxis = us-gaap_ParentMember
General and administrative |  |  |  |  |  |  |  |  | 0 us-gaap_GeneralAndAdministrativeExpense / dei_LegalEntityAxis = us-gaap_ParentMember | 0 us-gaap_GeneralAndAdministrativeExpense / dei_LegalEntityAxis = us-gaap_ParentMember | 0 us-gaap_GeneralAndAdministrativeExpense / dei_LegalEntityAxis = us-gaap_ParentMember
Selling |  |  |  |  |  |  |  |  | 0 us-gaap_SellingExpense / dei_LegalEntityAxis = us-gaap_ParentMember | 0 us-gaap_SellingExpense / dei_LegalEntityAxis = us-gaap_ParentMember | 0 us-gaap_SellingExpense / dei_LegalEntityAxis = us-gaap_ParentMember
Equity in income of unconsolidated joint ventures |  |  |  |  |  |  |  |  | 0 us-gaap_IncomeLossFromEquityMethodInvestments / dei_LegalEntityAxis = us-gaap_ParentMember | 0 us-gaap_IncomeLossFromEquityMethodInvestments / dei_LegalEntityAxis = us-gaap_ParentMember |
Interest |  |  |  |  |  |  |  |  | 0 us-gaap_InterestExpense / dei_LegalEntityAxis = us-gaap_ParentMember | 0 us-gaap_InterestExpense / dei_LegalEntityAxis = us-gaap_ParentMember | 0 us-gaap_InterestExpense / dei_LegalEntityAxis = us-gaap_ParentMember
Loss on Extinguishment of Debt |  |  |  |  |  |  |  |  |  | 0 us-gaap_GainsLossesOnExtinguishmentOfDebt / dei_LegalEntityAxis = us-gaap_ParentMember |
Total costs and expenses |  |  |  |  |  |  |  |  | 0 us-gaap_CostsAndExpenses / dei_LegalEntityAxis = us-gaap_ParentMember | 0 us-gaap_CostsAndExpenses / dei_LegalEntityAxis = us-gaap_ParentMember | 0 us-gaap_CostsAndExpenses / dei_LegalEntityAxis = us-gaap_ParentMember
Income (loss) before income taxes |  |  |  |  |  |  |  |  | 0 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic / dei_LegalEntityAxis = us-gaap_ParentMember | 0 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic / dei_LegalEntityAxis = us-gaap_ParentMember | 0 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic / dei_LegalEntityAxis = us-gaap_ParentMember
Income Tax Expense (Benefit) |  |  |  |  |  |  |  |  | 0 us-gaap_IncomeTaxExpenseBenefit / dei_LegalEntityAxis = us-gaap_ParentMember | 0 us-gaap_IncomeTaxExpenseBenefit / dei_LegalEntityAxis = us-gaap_ParentMember | 0 us-gaap_IncomeTaxExpenseBenefit / dei_LegalEntityAxis = us-gaap_ParentMember
Equity in subsidiaries |  |  |  |  |  |  |  |  | 50,789 mho_EquityInIncomeLossOfSubsidiaries / dei_LegalEntityAxis = us-gaap_ParentMember | 151,423 mho_EquityInIncomeLossOfSubsidiaries / dei_LegalEntityAxis = us-gaap_ParentMember | 13,347 mho_EquityInIncomeLossOfSubsidiaries / dei_LegalEntityAxis = us-gaap_ParentMember
Net income (loss) |  |  |  |  |  |  |  |  | 50,789 us-gaap_NetIncomeLoss / dei_LegalEntityAxis = us-gaap_ParentMember | 151,423 us-gaap_NetIncomeLoss / dei_LegalEntityAxis = us-gaap_ParentMember | 13,347 us-gaap_NetIncomeLoss / dei_LegalEntityAxis = us-gaap_ParentMember
Preferred Stock Dividends |  |  |  |  |  |  |  |  | 4,875 us-gaap_PreferredStockDividendsIncomeStatementImpact / dei_LegalEntityAxis = us-gaap_ParentMember | 3,656 us-gaap_PreferredStockDividendsIncomeStatementImpact / dei_LegalEntityAxis = us-gaap_ParentMember |
Excess of fair value over book value of preferred shares redeemed |  |  |  |  |  |  |  |  |  | 2,190 us-gaap_PreferredStockRedemptionPremium / dei_LegalEntityAxis = us-gaap_ParentMember |
Net Income (Loss) Available to Common Stockholders |  |  |  |  |  |  |  |  | 45,914 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic / dei_LegalEntityAxis = us-gaap_ParentMember | 145,577 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic / dei_LegalEntityAxis = us-gaap_ParentMember |
Guarantor Subsidiaries [Member] |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 1,185,058 us-gaap_Revenues / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 1,008,243 us-gaap_Revenues / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 738,649 us-gaap_Revenues / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
Land and housing |  |  |  |  |  |  |  |  | 958,991 mho_LandAndHousingCosts / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 824,508 mho_LandAndHousingCosts / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 610,540 mho_LandAndHousingCosts / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
Impairment of inventory and investment in unconsolidated joint ventures |  |  |  |  |  |  |  |  | 3,457 us-gaap_ImpairmentOfRealEstate / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 5,805 us-gaap_ImpairmentOfRealEstate / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 3,502 us-gaap_ImpairmentOfRealEstate / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
General and administrative |  |  |  |  |  |  |  |  | 73,747 us-gaap_GeneralAndAdministrativeExpense / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 66,249 us-gaap_GeneralAndAdministrativeExpense / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 51,307 us-gaap_GeneralAndAdministrativeExpense / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
Selling |  |  |  |  |  |  |  |  | 81,148 us-gaap_SellingExpense / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 68,209 us-gaap_SellingExpense / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 56,396 us-gaap_SellingExpense / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
Equity in income of unconsolidated joint ventures |  |  |  |  |  |  |  |  | 0 us-gaap_IncomeLossFromEquityMethodInvestments / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 0 us-gaap_IncomeLossFromEquityMethodInvestments / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember |
Interest |  |  |  |  |  |  |  |  | 11,926 us-gaap_InterestExpense / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 14,556 us-gaap_InterestExpense / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 14,650 us-gaap_InterestExpense / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
Loss on Extinguishment of Debt |  |  |  |  |  |  |  |  |  | 1,726 us-gaap_GainsLossesOnExtinguishmentOfDebt / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember |
Total costs and expenses |  |  |  |  |  |  |  |  | 1,129,269 us-gaap_CostsAndExpenses / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 981,053 us-gaap_CostsAndExpenses / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 736,395 us-gaap_CostsAndExpenses / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
Income (loss) before income taxes |  |  |  |  |  |  |  |  | 55,789 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 27,190 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 2,254 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
Income Tax Expense (Benefit) |  |  |  |  |  |  |  |  | 14,341 us-gaap_IncomeTaxExpenseBenefit / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | (114,866)us-gaap_IncomeTaxExpenseBenefit / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | (4,157)us-gaap_IncomeTaxExpenseBenefit / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
Equity in subsidiaries |  |  |  |  |  |  |  |  | 0 mho_EquityInIncomeLossOfSubsidiaries / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 0 mho_EquityInIncomeLossOfSubsidiaries / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 0 mho_EquityInIncomeLossOfSubsidiaries / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
Net income (loss) |  |  |  |  |  |  |  |  | 41,448 us-gaap_NetIncomeLoss / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 142,056 us-gaap_NetIncomeLoss / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 6,411 us-gaap_NetIncomeLoss / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
Preferred Stock Dividends |  |  |  |  |  |  |  |  | 0 us-gaap_PreferredStockDividendsIncomeStatementImpact / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 0 us-gaap_PreferredStockDividendsIncomeStatementImpact / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember |
Excess of fair value over book value of preferred shares redeemed |  |  |  |  |  |  |  |  |  | 0 us-gaap_PreferredStockRedemptionPremium / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember |
Net Income (Loss) Available to Common Stockholders |  |  |  |  |  |  |  |  | 41,448 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 142,056 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember |
Non-Guarantor Subsidiaries [Member] |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 30,122 us-gaap_Revenues / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 28,539 us-gaap_Revenues / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 23,256 us-gaap_Revenues / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
Land and housing |  |  |  |  |  |  |  |  | 0 mho_LandAndHousingCosts / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 0 mho_LandAndHousingCosts / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 0 mho_LandAndHousingCosts / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
Impairment of inventory and investment in unconsolidated joint ventures |  |  |  |  |  |  |  |  | 0 us-gaap_ImpairmentOfRealEstate / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 0 us-gaap_ImpairmentOfRealEstate / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 0 us-gaap_ImpairmentOfRealEstate / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
General and administrative |  |  |  |  |  |  |  |  | 15,083 us-gaap_GeneralAndAdministrativeExpense / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 13,245 us-gaap_GeneralAndAdministrativeExpense / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 11,320 us-gaap_GeneralAndAdministrativeExpense / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
Selling |  |  |  |  |  |  |  |  | 0 us-gaap_SellingExpense / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 73 us-gaap_SellingExpense / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 10 us-gaap_SellingExpense / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
Equity in income of unconsolidated joint ventures |  |  |  |  |  |  |  |  | (347)us-gaap_IncomeLossFromEquityMethodInvestments / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | (306)us-gaap_IncomeLossFromEquityMethodInvestments / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember |
Interest |  |  |  |  |  |  |  |  | 1,439 us-gaap_InterestExpense / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 1,382 us-gaap_InterestExpense / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 1,421 us-gaap_InterestExpense / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
Loss on Extinguishment of Debt |  |  |  |  |  |  |  |  |  | 0 us-gaap_GainsLossesOnExtinguishmentOfDebt / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember |
Total costs and expenses |  |  |  |  |  |  |  |  | 16,175 us-gaap_CostsAndExpenses / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 14,394 us-gaap_CostsAndExpenses / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 12,751 us-gaap_CostsAndExpenses / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
Income (loss) before income taxes |  |  |  |  |  |  |  |  | 13,947 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 14,145 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 10,505 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
Income Tax Expense (Benefit) |  |  |  |  |  |  |  |  | 4,606 us-gaap_IncomeTaxExpenseBenefit / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 4,778 us-gaap_IncomeTaxExpenseBenefit / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 3,569 us-gaap_IncomeTaxExpenseBenefit / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
Equity in subsidiaries |  |  |  |  |  |  |  |  | 0 mho_EquityInIncomeLossOfSubsidiaries / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 0 mho_EquityInIncomeLossOfSubsidiaries / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 0 mho_EquityInIncomeLossOfSubsidiaries / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
Net income (loss) |  |  |  |  |  |  |  |  | 9,341 us-gaap_NetIncomeLoss / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 9,367 us-gaap_NetIncomeLoss / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 6,936 us-gaap_NetIncomeLoss / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
Preferred Stock Dividends |  |  |  |  |  |  |  |  | 0 us-gaap_PreferredStockDividendsIncomeStatementImpact / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 0 us-gaap_PreferredStockDividendsIncomeStatementImpact / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember |
Excess of fair value over book value of preferred shares redeemed |  |  |  |  |  |  |  |  |  | 0 us-gaap_PreferredStockRedemptionPremium / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember |
Net Income (Loss) Available to Common Stockholders |  |  |  |  |  |  |  |  | 9,341 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 9,367 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember |
Corporate Elimination [Member] |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 0 us-gaap_Revenues / dei_LegalEntityAxis = us-gaap_IntersegmentEliminationMember | 0 us-gaap_Revenues / dei_LegalEntityAxis = us-gaap_IntersegmentEliminationMember | 0 us-gaap_Revenues / dei_LegalEntityAxis = us-gaap_IntersegmentEliminationMember
Land and housing |  |  |  |  |  |  |  |  | 0 mho_LandAndHousingCosts / dei_LegalEntityAxis = us-gaap_IntersegmentEliminationMember | 0 mho_LandAndHousingCosts / dei_LegalEntityAxis = us-gaap_IntersegmentEliminationMember | 0 mho_LandAndHousingCosts / dei_LegalEntityAxis = us-gaap_IntersegmentEliminationMember
Impairment of inventory and investment in unconsolidated joint ventures |  |  |  |  |  |  |  |  | 0 us-gaap_ImpairmentOfRealEstate / dei_LegalEntityAxis = us-gaap_IntersegmentEliminationMember | 0 us-gaap_ImpairmentOfRealEstate / dei_LegalEntityAxis = us-gaap_IntersegmentEliminationMember | 0 us-gaap_ImpairmentOfRealEstate / dei_LegalEntityAxis = us-gaap_IntersegmentEliminationMember
General and administrative |  |  |  |  |  |  |  |  | 0 us-gaap_GeneralAndAdministrativeExpense / dei_LegalEntityAxis = us-gaap_IntersegmentEliminationMember | 0 us-gaap_GeneralAndAdministrativeExpense / dei_LegalEntityAxis = us-gaap_IntersegmentEliminationMember | 0 us-gaap_GeneralAndAdministrativeExpense / dei_LegalEntityAxis = us-gaap_IntersegmentEliminationMember
Selling |  |  |  |  |  |  |  |  | 0 us-gaap_SellingExpense / dei_LegalEntityAxis = us-gaap_IntersegmentEliminationMember | 0 us-gaap_SellingExpense / dei_LegalEntityAxis = us-gaap_IntersegmentEliminationMember | 0 us-gaap_SellingExpense / dei_LegalEntityAxis = us-gaap_IntersegmentEliminationMember
Equity in income of unconsolidated joint ventures |  |  |  |  |  |  |  |  | 0 us-gaap_IncomeLossFromEquityMethodInvestments / dei_LegalEntityAxis = us-gaap_IntersegmentEliminationMember | 0 us-gaap_IncomeLossFromEquityMethodInvestments / dei_LegalEntityAxis = us-gaap_IntersegmentEliminationMember |
Interest |  |  |  |  |  |  |  |  | 0 us-gaap_InterestExpense / dei_LegalEntityAxis = us-gaap_IntersegmentEliminationMember | 0 us-gaap_InterestExpense / dei_LegalEntityAxis = us-gaap_IntersegmentEliminationMember | 0 us-gaap_InterestExpense / dei_LegalEntityAxis = us-gaap_IntersegmentEliminationMember
Loss on Extinguishment of Debt |  |  |  |  |  |  |  |  |  | 0 us-gaap_GainsLossesOnExtinguishmentOfDebt / dei_LegalEntityAxis = us-gaap_IntersegmentEliminationMember |
Total costs and expenses |  |  |  |  |  |  |  |  | 0 us-gaap_CostsAndExpenses / dei_LegalEntityAxis = us-gaap_IntersegmentEliminationMember | 0 us-gaap_CostsAndExpenses / dei_LegalEntityAxis = us-gaap_IntersegmentEliminationMember | 0 us-gaap_CostsAndExpenses / dei_LegalEntityAxis = us-gaap_IntersegmentEliminationMember
Income (loss) before income taxes |  |  |  |  |  |  |  |  | 0 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic / dei_LegalEntityAxis = us-gaap_IntersegmentEliminationMember | 0 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic / dei_LegalEntityAxis = us-gaap_IntersegmentEliminationMember | 0 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic / dei_LegalEntityAxis = us-gaap_IntersegmentEliminationMember
Income Tax Expense (Benefit) |  |  |  |  |  |  |  |  | 0 us-gaap_IncomeTaxExpenseBenefit / dei_LegalEntityAxis = us-gaap_IntersegmentEliminationMember | 0 us-gaap_IncomeTaxExpenseBenefit / dei_LegalEntityAxis = us-gaap_IntersegmentEliminationMember | 0 us-gaap_IncomeTaxExpenseBenefit / dei_LegalEntityAxis = us-gaap_IntersegmentEliminationMember
Equity in subsidiaries |  |  |  |  |  |  |  |  | (50,789)mho_EquityInIncomeLossOfSubsidiaries / dei_LegalEntityAxis = us-gaap_IntersegmentEliminationMember | (151,423)mho_EquityInIncomeLossOfSubsidiaries / dei_LegalEntityAxis = us-gaap_IntersegmentEliminationMember | (13,347)mho_EquityInIncomeLossOfSubsidiaries / dei_LegalEntityAxis = us-gaap_IntersegmentEliminationMember
Net income (loss) |  |  |  |  |  |  |  |  | (50,789)us-gaap_NetIncomeLoss / dei_LegalEntityAxis = us-gaap_IntersegmentEliminationMember | (151,423)us-gaap_NetIncomeLoss / dei_LegalEntityAxis = us-gaap_IntersegmentEliminationMember | (13,347)us-gaap_NetIncomeLoss / dei_LegalEntityAxis = us-gaap_IntersegmentEliminationMember
Preferred Stock Dividends |  |  |  |  |  |  |  |  | 0 us-gaap_PreferredStockDividendsIncomeStatementImpact / dei_LegalEntityAxis = us-gaap_IntersegmentEliminationMember | 0 us-gaap_PreferredStockDividendsIncomeStatementImpact / dei_LegalEntityAxis = us-gaap_IntersegmentEliminationMember |
Excess of fair value over book value of preferred shares redeemed |  |  |  |  |  |  |  |  |  | 0 us-gaap_PreferredStockRedemptionPremium / dei_LegalEntityAxis = us-gaap_IntersegmentEliminationMember |
Net Income (Loss) Available to Common Stockholders |  |  |  |  |  |  |  |  | $ (50,789)us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic / dei_LegalEntityAxis = us-gaap_IntersegmentEliminationMember | $ (151,423)us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic / dei_LegalEntityAxis = us-gaap_IntersegmentEliminationMember |

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- Definition The aggregate costs related to design, development, and general contracting for residential buildings, including single-family houses, multifamily housing, townhomes, apartments, and modular housing, as well as the aggregate costs of real estate land sales. + References No definition available. + Details
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- Definition Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 50 -Section 40 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6850294&loc=d3e12317-112629 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 50 -Section 40 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6850294&loc=d3e12355-112629 + Details
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- Definition The aggregate total of expenses of managing and administering the affairs of an entity, including affiliates of the reporting entity, which are not directly or indirectly associated with the manufacture, sale or creation of a product or product line. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.4) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
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- Definition The charge against earnings in the period to reduce the carrying amount of real property to fair value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6391110&loc=d3e2921-110230 + Details
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- Definition The portion of earnings or loss from continuing operations before income taxes that is attributable to domestic operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(h)(1)(i)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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- Definition This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. This item includes income or expense related to stock-based compensation based on the investor's grant of stock to employees of an equity method investee. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 9 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35755396&loc=d3e33749-111570 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.12) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 11 -Article 7 + Details
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