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Note 12 - Common Stock and Additional Paid-in Capital (Details) (USD $)	9 Months Ended
	Sep. 30, 2013	Apr. 30, 2013	Dec. 31, 2012
Stockholders' Equity Note [Abstract]
SharesPublicOffering (in Shares)		11,500,000
Common Stock, Par or Stated Value Per Share (in Dollars per share)	$ 0.01	$ 0.01	$ 0.01
Sale of Stock, Price Per Share (in Dollars per share)		$ 10.00
Proceeds from Issuance or Sale of Equity	$ 115,000,000
ProceedsFromIssuanceOfEquityNetOfIssuanceCosts	$ 109,183,623

X

- Definition

The cash inflow from the issuance of common stock, preferred stock, treasury stock, stock options, and other types of equity, net after underwriters' discounts, commissions, and other related expenses.

+ References

No definition available.

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X

- Definition

Number of shares of stock offered to the public.

+ References

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X

- Definition

Face amount or stated value per share of common stock.

+ 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 210.5-02.29)

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



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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 30

-Article 5

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- Definition

The cash inflow from the issuance of common stock, preferred stock, treasury stock, stock options, and other types of equity.

+ 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 14

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3255-108585

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- Definition

Per share amount received by subsidiary or equity investee for each share of common stock issued or sold in the stock transaction.

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