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

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-Name Statement of Financial Accounting Standard (FAS)

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-Paragraph 18

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-Name Accounting Principles Board Opinion (APB)

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Total investments in (A) an entity in which the company has significant influence, but does not have control, (B) subsidiaries that are not required to be consolidated and are accounted for using the equity and or cost method. Investments in an entity that is affiliated with the reporting entity by means of direct or indirect ownership, (C) an entity in which the reporting entity shares control of the entity with another party or group, and (D) an entity in which the company has significant influence, but does not have control.

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which is directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent (that is, noncontrolling interest, previously referred to as minority interest).

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 27

-Article 5

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-Name Accounting Research Bulletin (ARB)

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The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

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Amount of Net Income (Loss) attributable to noncontrolling interest.

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Non-Controlling Interset in Subsidiary - Additional Information (Detail) (USD $)	1 Months Ended		3 Months Ended	6 Months Ended
	Apr. 20, 2012	Aug. 17, 2011	Jun. 30, 2012	Jun. 30, 2012	Dec. 31, 2011	Jun. 30, 2011
Noncontrolling Interest [Line Items]
Capital contribution to fund operating expenses	$ 500,000	$ 1,000,000
Equity method investment, equity interest						50.00%
Percentage Of ownership interest	100.00%	75.00%
Percentage Of ownership interest by other investor		25.00%
Fair market value gain on revaluation of non-controlling interest		169,000
Non-controlling interest in subsidiary		588,000			536,000
Fair value of non-controlling interest	1,200,000
Net loss attributable to non controlling interest			$ (20,000)	$ (65,000)
If Option is exercised On or before October 13 \| Maximum
Noncontrolling Interest [Line Items]
Equity method investment, equity interest	12.00%
If Option is exercised between October 14, 2013 and April 13, 2015 \| Maximum
Noncontrolling Interest [Line Items]
Equity method investment, equity interest	6.00%