2017 Convertible Subordianted Debt

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- Definition

2018 Convertible Subordinated Debt

+ References

No definition available.

+ Details

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- Definition

Debt instrument, convertible, principal amount used in conversion rate calculation.

+ References

No definition available.

+ Details

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- Definition

Percent restrictions on payment of dividends per restricted payments basket

+ References

No definition available.

+ Details

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- Definition

Restricted Payments Basket, as defined in the indenture governing the Company's 2018 Senior Notes

+ References

No definition available.

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- Definition

Restrictions on payment of dividends - beginning amount for calculation

+ References

No definition available.

+ Details

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- Definition

The price per share of the conversion feature embedded in the debt instrument.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 470

-SubTopic 20

-Section 50

-Paragraph 5

-Subparagraph (b)

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- Definition

Ratio applied to the conversion of debt instrument into equity with equity shares divided by debt principal amount.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section 50

-Paragraph 3

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

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-Publisher FASB

-Name Accounting Standards Codification

-Glossary Conversion Rate

-URI http://asc.fasb.org/extlink&oid=6509012

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

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-Publisher FASB

-Name Accounting Standards Codification

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-Subparagraph (SX 210.5-02.22(a)(1))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

Percentage of principal amount of debt redeemed.

+ References

No definition available.

+ Details

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- Definition

The percentage rate used to calculate dividend payments on preferred stock.

+ References

No definition available.

+ Details

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- Definition

Including the current and noncurrent portions, carrying value as of the balance sheet date of Notes with the highest claim on the assets of the issuer in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle if longer). Senior note holders are paid off in full before any payments are made to junior note holders.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.16)

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

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-Section S99

-Paragraph 1

-Subparagraph (SX 210.7-03.16(a))

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 16

-Article 9

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- Definition

Number of shares of stock issued during the period that is attributable to transactions involving issuance of stock not separately disclosed.

+ References

No definition available.

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Debt Senior Notes (Details) (USD $) Share data in Millions, except Per Share data, unless otherwise specified	3 Months Ended	12 Months Ended		24 Months Ended
	Mar. 31, 2015	Nov. 14, 2016	Nov. 14, 2015	Nov. 15, 2018	Dec. 31, 2014
Debt Instrument [Line Items]
Senior notes	$ 228,569,000us-gaap_SeniorNotes				$ 228,469,000us-gaap_SeniorNotes
Convertible senior subordinated notes due 2018	86,250,000mho_A2018ConvertibleSubordinatedDebt				86,250,000mho_A2018ConvertibleSubordinatedDebt
Convertible senior subordinated notes due 2017	57,500,000mho_A2017ConvertibleSubordiantedDebt				57,500,000mho_A2017ConvertibleSubordiantedDebt
Debt Instrument, Redemption Price, Percentage of Principal Amount Redeemed		102.156%	104.313%	100.00%
Preferred Stock, Dividend Rate, Percentage	9.75%
Restricted Payments Basket	150,500,000mho_RestrictedPaymentsBasket				148,600,000mho_RestrictedPaymentsBasket
2018 Senior Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	8.625%
2017 Convertible Senior Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	3.25%
Debt Instrument, Convertible, Conversion Ratio	42.0159
Debt Instrument Convertible Principal Amount Used In Conversion Rate Calculation	1,000
Debt Instrument, Convertible, Conversion Price	$ 23.80
Stock Issued During Period, Shares, Other	2.4
2018 Convertible Senior Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	3.00%
Debt Instrument, Convertible, Conversion Ratio	30.9478
Debt Instrument Convertible Principal Amount Used In Conversion Rate Calculation	1,000
Debt Instrument, Convertible, Conversion Price	$ 32.31
Stock Issued During Period, Shares, Other	2.7
Face Value [Member]
Debt Instrument [Line Items]
Senior notes	230,000,000
Base of restricted payments basket income calculation [Member]
Debt Instrument [Line Items]
Other Restrictions on Payment of Dividends	$ 40,000,000
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 our aggregate consolidated net income subtracted from base amount of calculation [Member]
Debt Instrument [Line Items]
Percent restrictions on payment of dividends	100.00%
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%