Class of warrant or right number of warrants issued during period.

No definition available.

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- Definition

Class Of Warrant Or Right Value Of Warrants Issued During Period

+ References

No definition available.

+ Details

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- Definition

Number of multi family units.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	instant

- Definition

Number of single family units.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	instant

- Definition

Number of town houses.

+ References

No definition available.

+ Details

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Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Number of warrants issued.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	instant

- Definition

Percentage over members capital account for purchase price.

+ References

No definition available.

+ Details

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

- Definition

Amount of paid and unpaid preferred stock dividends declared with the form of settlement in cash.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Article 3

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.3-04)

-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 405

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6957935&loc=d3e64057-112817

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

- Definition

Portion of equity (net assets) in a variable interest entity (VIE) not attributable, directly or indirectly, to the parent entity. That is, this is the portion of equity in a VIE that is attributable to the noncontrolling interest (previously referred to as minority interest).

+ References

No definition available.

+ Details

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

- Definition

The number of units in a real estate property owned as of the balance sheet date.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Cash outflow to owners or shareholders, excluding ordinary dividends. Includes special dividends.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Financing Activities

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

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 15

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585

+ Details

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

- Definition

Amount of cash outflow to a noncontrolling interest. Includes, but not limited to, reduction of noncontrolling interest ownership. Excludes dividends paid to the noncontrolling interest.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Financing Activities

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

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 15

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585

+ Details

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

- Definition

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

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Cash received on stock transaction after deduction of issuance costs.

+ References

No definition available.

+ Details

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

- Definition

The carrying amount of the consolidated Variable Interest Entity's assets included in the reporting entity's statement of financial position.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 810

-SubTopic 10

-Section 50

-Paragraph 3

-Subparagraph (bb)

-URI http://asc.fasb.org/extlink&oid=28200181&loc=d3e5710-111685

+ Details

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

- Definition

The carrying amount of the consolidated Variable Interest Entity's liabilities included in the reporting entity's statement of financial position.

+ References

+ Details

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Consolidation of Variable Interest Entities - Additional Information (Detail) (USD $) Share data in Thousands, unless otherwise specified	12 Months Ended		0 Months Ended	1 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Mar. 14, 2013	Dec. 31, 2013	Sep. 27, 2012 Unit	Aug. 23, 2012 Unit
Variable Interest Entity [Line Items]
Payment to redeem remaining equity interest	$ 14,633,000us-gaap_PaymentsToMinorityShareholders	$ 2,364,000us-gaap_PaymentsToMinorityShareholders
Maryland [Member]
Variable Interest Entity [Line Items]
Number of town homes			36
Number of multi-family units			117
Washington, D.C. [Member]
Variable Interest Entity [Line Items]
Number of town homes			73
Number of single family units			38
Virginia [Member]
Variable Interest Entity [Line Items]
Number of town homes			110
Number of single family units			19
Class A [Member]
Variable Interest Entity [Line Items]
Number of warrants issued	241
Aggregate fair value of warrants for investors	162,000		146,000
Comstock Investors VII, L.C [Member]
Variable Interest Entity [Line Items]
Preferred distribution	8,600,000	700,000
Cumulative, compounded, preferred return rate			20.00%
Percentage of cumulative cash on cash return			20.00%
Payment to redeem remaining equity interest	5,400,000
Comstock Investors VII, L.C [Member] \| Class A [Member]
Variable Interest Entity [Line Items]
Number of warrants issued			112
New Hampshire Avenue, LLC [Member]
Variable Interest Entity [Line Items]
Profit distributed	3,200,000	100,000
Comstock Eastgate, L.C. [Member]
Variable Interest Entity [Line Items]
Equity contributions made to variable interest entity	0
Preferred distribution	1,900,000	1,500,000
Comstock Investors VIII, L.C [Member]
Variable Interest Entity [Line Items]
Preferred distribution	900,000	0
Cumulative, compounded, preferred return rate				20.00%
Percentage of cumulative cash on cash return				20.00%
Comstock Investors VIII, L.C [Member] \| Maryland [Member]
Variable Interest Entity [Line Items]
Number of town homes		45		45
Comstock Investors VIII, L.C [Member] \| Virginia [Member]
Variable Interest Entity [Line Items]
Number of town homes		42		42
Comstock Investors VIII, L.C [Member] \| Class A [Member]
Variable Interest Entity [Line Items]
Aggregate fair value of warrants for investors		131,000		131,000
Number of warrants issued		102		102
Subsidiaries [Member] \| Comstock Investors VII, L.C [Member] \| Private Placement [Member]
Variable Interest Entity [Line Items]
Initial aggregate principal amount up to capital raise			7,300,000
Subsidiaries [Member] \| Comstock Investors VIII, L.C [Member] \| Private Placement [Member] \| Class B [Member]
Variable Interest Entity [Line Items]
Initial aggregate principal amount up to capital raise				4,000,000
Consolidated Real Estate Inventories [Member]
Variable Interest Entity [Line Items]
Number of projects					66	111
Equity contributions made to variable interest entity		600,000		600,000
Total liabilities	13,500,000	27,400,000		27,400,000
Total assets	19,500,000	46,300,000		46,300,000
Consolidated Real Estate Inventories [Member] \| BridgeCom Development I, LLC [Member] .
Variable Interest Entity [Line Items]
Equity contributions made to variable interest entity		$ 600,000		600,000