EARNINGS PER SHARE (Details) (USD $)	3 Months Ended	9 Months Ended
Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Basic and diluted earnings per share attributable to common and restricted shares of common stock
Total shares of common stock, basic (in dollars per share)	$ 0.20	$ 0.17	$ 0.54	$ 0.48
Total shares of common stock, diluted (in dollars per share)	$ 0.20	$ 0.17	$ 0.54	$ 0.48
Common Stock
Basic and diluted earnings per share attributable to common and restricted shares of common stock
Total shares of common stock, basic (in dollars per share)	$ 0.20	$ 0.17	$ 0.54	$ 0.48
Total shares of common stock, diluted (in dollars per share)	$ 0.20	$ 0.17	$ 0.54	$ 0.48
Restricted shares of common stock
Basic and diluted earnings per share attributable to common and restricted shares of common stock
Total shares of common stock, basic (in dollars per share)	$ 0.20	$ 0.17	$ 0.53	$ 0.47
Total shares of common stock, diluted (in dollars per share)	$ 0.20	$ 0.17	$ 0.53	$ 0.47

The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 260

-SubTopic 10

-Section 55

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-URI http://asc.fasb.org/extlink&oid=6945512&loc=d3e4984-109258

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

-Publisher FASB

-Name Emerging Issues Task Force (EITF)

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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

-Publisher SEC

-Name Regulation S-X (SX)

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Reference 4: http://www.xbrl.org/2003/role/presentationRef

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Reference 5: http://www.xbrl.org/2003/role/presentationRef

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Reference 6: http://www.xbrl.org/2003/role/presentationRef

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Reference 7: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 128

-Paragraph 36, 37, 38

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 8: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 260

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Reference 10: http://www.xbrl.org/2003/role/presentationRef

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-Name Regulation S-X (SX)

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Reference 11: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 260

-SubTopic 10

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6920599&loc=d3e1252-109256

+ Details

- Definition

The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

+ References+ Details