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EQUITY Dividends paid (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended						12 Months Ended
	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Equity [Abstract]
Regular dividend paid per share	$ 0.035	$ 0.035	$ 0.035	$ 0.035	$ 0.035	$ 0.035	$ 0.035	$ 0.14	$ 0.035
Special dividend paid per share	$ 0	$ 0	$ 0	$ 0	$ 0.050	$ 0	$ 0	$ 0.05	$ 0
Total dividends paid	$ 0.035	$ 0.035	$ 0.035	$ 0.035	$ 0.085	$ 0.035	$ 0.035	$ 0.19	$ 0.035
Payments of Dividends	$ 517	$ 526	$ 559	$ 627	$ 1,496	$ 613	$ 517	$ 3,208	$ 613
Stock Issued During Period, Value, Dividend Reinvestment Plan	117	106	69	0	0	0	117	175	0
Total dividend paid - cash and shares	634	632	628	627	1,496	613	634	3,383	613
Dividend reinvestment plan discount	$ 6	$ 6	$ 4	$ 0	$ 0	$ 0	$ 6	$ 10	$ 0
Stock Issued During Period, Shares, Dividend Reinvestment Plan	18,976	14,305	8,429	0	0	0	18,976	22,734	0

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- Definition

Dividend reinvestment plan discount

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- Definition

Regular dividend paid per share

+ References

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- Definition

Special dividend paid per share

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Total dividend paid - cash and shares

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Total dividends paid

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- Definition

Cash outflow in the form of capital distributions and dividends to common shareholders, preferred shareholders and noncontrolling interests.

+ 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

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Number of shares issued during the period from a dividend reinvestment plan (DRIP). A dividend reinvestment plan allows the shareholders to reinvest dividends paid to them by the entity on new issues of stock by the entity.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section 50

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644

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Value of stock issued during the period from a dividend reinvestment plan (DRIP). A dividend reinvestment plan allows the holder of the stock to reinvest dividends paid to them by the entity on new issues of stock by the entity.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section 50

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644

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