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SEGMENT REPORTING Balance Sheet (Details) - USD ($) $ in Thousands | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
--- | --- | --- | ---
Segment Reporting Information [Line Items] |  |  |
Real estate at cost | $ 2,736,283 | $ 2,208,595 | $ 1,819,053
Total assets | 3,032,319 | 2,720,721 | 2,244,523
Acquisition of real estate | 344,476 | 250,353 | 220,041
Redevelopment and property improvement costs | 164,315 | 140,118 | 106,883
Core Portfolio [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Real estate at cost | 1,572,681 | 1,366,017 | 1,059,257
Total assets | 1,662,092 | 1,613,290 | 1,012,553
Acquisition of real estate | 188,835 | 203,103 | 143,616
Redevelopment and property improvement costs | 16,505 | 5,432 | 10,611
Funds [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Real estate at cost | 1,163,602 | 842,578 | 759,796
Total assets | 1,223,039 | 1,005,145 | 1,105,264
Acquisition of real estate | 155,641 | 47,250 | 76,425
Redevelopment and property improvement costs | 147,810 | 134,686 | 96,272
Structuring Financing [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Real estate at cost | 0 | 0 | 0
Total assets | 147,188 | 102,286 | 126,706
Acquisition of real estate | 0 | 0 | 0
Redevelopment and property improvement costs | $ 0 | $ 0 | $ 0

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