SHAREHOLDERS EQUITY (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Class of Stock [Line Items]
Quarterly cash payment that may be made under Dividend Reinvestment Program	$ 200
Percent of fair market value which shares may be purchased at under the DRIP	97.00%
Fair market value discount	3.00%
Sale of shares (dividend reinvestment program)	$ 36,588	$ 22,461	$ 13,648
Shares purchased under voluntary purchase	1,202,180	1,134,068
Common Stock [Member]
Class of Stock [Line Items]
Sale of shares (dividend reinvestment program), shares	1,204,710	1,137,998	665,654
Sale of shares (dividend reinvestment program)	$ 1,004	$ 948	$ 555

Percent discount against fair market value which shares may be purchased at under the DRIP programs.

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- Definition

Percent of fair market value which shares may be purchased at under the DRIP program.

+ References

No definition available.

+ Details

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- Definition

Voluntary cash payments that may be made, on a quarterly basis, to purchase stock under the dividend reinvestment program.

+ References

No definition available.

+ Details

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- Definition

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. Specific to the voluntary purchase portion of activity.

+ References

No definition available.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

+ 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=84159872&loc=d3e21463-112644

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- Definition

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

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