FAIR VALUE DISCLOSURES - Narrative (Details) $ in Thousands	12 Months Ended
Dec. 31, 2015 USD ($) acquisition	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Number of real estate acquisitions \| acquisition	3
Contingent consideration asset	$ 350	$ 0
Recurring [Member] \| Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Contingent consideration liability	2,700	$ 3,900	$ 7,500
Contingent consideration asset	$ 350

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 35
-Paragraph 1
-Subparagraph b
-URI http://asc.fasb.org/extlink&oid=6911338&loc=d3e6819-128478

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-Publisher FASB
-Name Accounting Standards Codification
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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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-SubTopic 30
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-Name Accounting Standards Codification
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