This element represents amount of current income tax expense for discontinued operation.

No definition available.

Name:	hmg_DiscontinuedOperationCurrentIncomeTaxExpense
Namespace Prefix:	hmg_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

This element represents amount of deferred income tax expense for discontinued operations.

+ References

No definition available.

+ Details

Name:	hmg_DiscontinuedOperationDeferredIncomeTaxExpense
Namespace Prefix:	hmg_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

This element represents amount due to advisor.

+ References

No definition available.

+ Details

Name:	hmg_DueToAdviser
Namespace Prefix:	hmg_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of per share difference between the carrying amount and the sales price of real estate properties sold as part of discontinued operations.

+ References

No definition available.

+ Details

Name:	hmg_GainLossOnDispositionOfRealEstateDiscontinuedOperationsPerShare
Namespace Prefix:	hmg_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the past due rental received.

+ References

No definition available.

+ Details

Name:	hmg_PastDueRentalReceived
Namespace Prefix:	hmg_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Tax effect allocated to a disposal group that is classified as a component of the entity reported as a separate component of income before extraordinary items. Includes the tax effects of the following: income (loss) from operations during the phase-out period, gain (loss) on disposal, provision (or any reversals of earlier provisions) for loss on disposal, and adjustments of a prior period gain (loss) on disposal.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 205

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (b),(c)

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-Name Accounting Standards Codification

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-Name Accounting Standards Codification

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-Paragraph 3

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+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 323

-SubTopic 10

-Section 50

-Paragraph 3

-Subparagraph (a)(1)

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount of difference between the carrying amount and the sales price of real estate properties sold as part of discontinued operations.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

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

- Definition

Carrying amounts due as of the balance sheet date of the sum of amounts receivable other than from customers.

+ References

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 210.5-02.8)

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 8

-Article 5

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Cash received for the sale of real estate that is not part of an investing activity during the current period.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 12

-Subparagraph (c)

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+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Carrying amount as of the balance sheet date of investments in land and buildings held for sale, excluding real estate considered to be inventory of the entity.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.7-03.1(f))

-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The cash outflow from the repayment of a long-term debt instrument issued, secured by a first mortgage deed of trust, containing a pledge of real property. The lender has the highest claim on the property in case of default.

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-Name Accounting Standards Codification

-Glossary Financing Activities

-URI http://asc.fasb.org/extlink&oid=6513228

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Revenue from the sale of commercial, industrial, or residential property during the period. This element is more likely than not relevant to an entity for which real estate operations are a principal activity. If real estate operations are not a principal activity, the reporting entity would likely use a gain (loss) on sale of property, plant, or equipment type element.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1(e))

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

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Period Type:	duration

- Definition

A specified percentage variance in the discount rate assumption in the determination of fair value of transferor's interests in transferred financial assets (including any servicing assets or servicing liabilities) as of the balance sheet date.

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-Publisher FASB

-Name Accounting Standards Codification

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-SubTopic 20

-Section 50

-Paragraph 4

-Subparagraph (c)

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DISCONTINUED OPERATIONS AND REAL ESTATE INTERESTS HELD FOR SALE (Details 2) (USD $)	1 Months Ended		12 Months Ended			1 Months Ended
	Jun. 30, 2013	Feb. 25, 2013	Dec. 31, 2013	Dec. 31, 2013 Hmg Courtland Properties, Inc.	Feb. 25, 2013 Promissory note and accrued interest due from individual	Mar. 29, 2013 Membership Interests Purchase Agreement	Mar. 29, 2013 Membership Interests Purchase Agreement Hmg Courtland Properties, Inc. Courtland Investments, Inc.	Mar. 29, 2013 Membership Interests Purchase Agreement Christoph Family Trust	Mar. 29, 2013 Membership Interests Purchase Agreement Montys Marina
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Sales of real estate		$ 24,400,000
Proceeds from sale of real estate		23,400,000				3,000,000
Nontrade receivables					1,000,000
Repayments of first mortgage bond		2,700,000
Gain on sale of discontinued operations		19,000,000				28,000
Gain on sale of real estate interests, per share		$ 19				$ 0.03
Provision for corporate income taxes estimated			2,500,000
Current income tax expense			1,600,000
Deferred income tax expense			915,000
Past Due Rental Received	327,000
Percentage of interest in spa exercised by purchaser	50.00%
Real estate held-for-sale	100,000
Amounts due to the Adviser			$ 2,095,701	$ 2,100,000
Equity Method Investment, Ownership Percentage			49.00%				95.00%	50.00%	50.00%