Basis of Presentation	3 Months Ended
Mar. 31, 2014
Basis of Presentation [Abstract]
Basis of Accounting [Text Block]	Basis of Presentation The accompanying Unaudited Condensed Consolidated Financial Statements (the “financial statements”) of M/I Homes, Inc. and its subsidiaries (the “Company”) and notes thereto have been prepared in accordance with the rules and regulations of the Securities and Exchange Commission (the “SEC”) for interim financial information. The financial statements include the accounts of M/I Homes, Inc. and its subsidiaries. All intercompany transactions have been eliminated. Results for the interim period are not necessarily indicative of results for a full year. In the opinion of management, the accompanying financial statements reflect all adjustments (all of which are normal and recurring in nature) necessary for a fair presentation of financial results for the interim periods presented. These financial statements should be read in conjunction with the Consolidated Financial Statements and Notes thereto included in the Company's Annual Report on Form 10-K for the year ended December 31, 2013 (the “2013 Form 10-K”). The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during that period. Actual results could differ from these estimates and have a significant impact on the financial condition and results of operations and cash flows. With regard to the Company, estimates and assumptions are inherent in calculations relating to valuation of inventory and investment in unconsolidated joint ventures, property and equipment depreciation, valuation of derivative financial instruments, accounts payable on inventory, accruals for costs to complete inventory, accruals for warranty claims, accruals for self-insured general liability claims, litigation, accruals for health care and workers' compensation, accruals for guaranteed or indemnified loans, stock-based compensation expense, income taxes, and contingencies. Items that could have a significant impact on these estimates and assumptions include the risks and uncertainties listed in “Item 1A. Risk Factors” in Part I of our 2013 Form 10-K, as the same may be updated from time to time in our subsequent filings with the SEC. Reclassifications Certain amounts in our Unaudited Condensed Consolidated Statement of Cash Flows for the three months ended March 31, 2013 were adjusted to conform to our 2014 presentation. The Company also reclassified certain amounts presented in the Supplemental Condensed Consolidating Statement of Cash Flows for the three months ended March 31, 2013 included in Note 11. The Company believes these reclassifications are immaterial to the supplemental condensed consolidating financial statements which are presented as supplemental information. These reclassifications do not affect the Company's consolidated financial statements for either period. Impact of New Accounting Standards In January 2014, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2014-04: Receivables - Troubled Debt Restructurings by Creditors (“ASU 2014-04”), which clarifies when an in substance repossession or foreclosure of residential real estate property collateralizing a consumer mortgage loan has occurred. This guidance helps determine when the creditor should derecognize the loan receivable and recognize the real estate property. The guidance is effective for the Company beginning October 1, 2015 and is not expected to have a material impact on the Company’s unaudited condensed consolidated financial statements or disclosures.

Basis of Presentation

The accompanying Unaudited Condensed Consolidated Financial Statements (the “financial statements”) of M/I Homes, Inc. and its subsidiaries (the “Company”) and notes thereto have been prepared in accordance with the rules and regulations of the Securities and Exchange Commission (the “SEC”) for interim financial information. The financial statements include the accounts of M/I Homes, Inc. and its subsidiaries. All intercompany transactions have been eliminated. Results for the interim period are not necessarily indicative of results for a full year. In the opinion of management, the accompanying financial statements reflect all adjustments (all of which are normal and recurring in nature) necessary for a fair presentation of financial results for the interim periods presented. These financial statements should be read in conjunction with the Consolidated Financial Statements and Notes thereto included in the Company's Annual Report on Form 10-K for the year ended December 31, 2013 (the “2013 Form 10-K”).

The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during that period. Actual results could differ from these estimates and have a significant impact on the financial condition and results of operations and cash flows. With regard to the Company, estimates and assumptions are inherent in calculations relating to valuation of inventory and investment in unconsolidated joint ventures, property and equipment depreciation, valuation of derivative financial instruments, accounts payable on inventory, accruals for costs to complete inventory, accruals for warranty claims, accruals for self-insured general liability claims, litigation, accruals for health care and workers' compensation, accruals for guaranteed or indemnified loans, stock-based compensation expense, income taxes, and contingencies. Items that could have a significant impact on these estimates and assumptions include the risks and uncertainties listed in “Item 1A. Risk Factors” in Part I of our 2013 Form 10-K, as the same may be updated from time to time in our subsequent filings with the SEC.

Reclassifications

Certain amounts in our Unaudited Condensed Consolidated Statement of Cash Flows for the three months ended March 31, 2013 were adjusted to conform to our 2014 presentation. The Company also reclassified certain amounts presented in the Supplemental Condensed Consolidating Statement of Cash Flows for the three months ended March 31, 2013 included in Note 11. The Company believes these reclassifications are immaterial to the supplemental condensed consolidating financial statements which are presented as supplemental information. These reclassifications do not affect the Company's consolidated financial statements for either period.

Impact of New Accounting Standards

In January 2014, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2014-04: Receivables - Troubled Debt Restructurings by Creditors (“ASU 2014-04”), which clarifies when an in substance repossession or foreclosure of residential real estate property collateralizing a consumer mortgage loan has occurred. This guidance helps determine when the creditor should derecognize the loan receivable and recognize the real estate property. The guidance is effective for the Company beginning October 1, 2015 and is not expected to have a material impact on the Company’s unaudited condensed consolidated financial statements or disclosures.