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The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

+ References

No definition available.

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- Definition

Total number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) issued to shareholders (includes related preferred shares that were issued, repurchased, and remain in the treasury). May be all or portion of the number of preferred shares authorized. Excludes preferred shares that are classified as debt.

+ 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 210.5-02.28)

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 29

-Article 5

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Proceeds from issuance of capital stock which provides for a specific dividend that is paid to the shareholders before any dividends to common stockholders and which takes precedence over common stockholders in the event of liquidation.

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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 14

-Subparagraph (a)

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Amount per share or per unit of equity securities issued by non-development stage entity.

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No definition available.

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Basis of Presentation And Consolidation - Additional Information (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended	0 Months Ended
	Mar. 31, 2015	Mar. 30, 2015	Dec. 31, 2014
Summary Of Significant Accounting Policies [Line Items]
Preferred stock issued	0us-gaap_PreferredStockSharesIssued		0us-gaap_PreferredStockSharesIssued
Net proceeds from stock issuance	$ 1,129
Silver Creek Series B Preferred Stock [Member]
Summary Of Significant Accounting Policies [Line Items]
Preferred stock issued		900
Preferred stock price per share		$ 1.35
Net proceeds from stock issuance		$ 1,100
Silver Creek [Member]
Summary Of Significant Accounting Policies [Line Items]
Ownership interest percentage	58.00%		60.00%