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Risk Management and Derivatives (Classification on the Consolidated Statements of Operations) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Derivative financial instruments on consolidated statements of operations |  |  |  |
Amount of Gain (Loss) Recognized in Accumulated Other Comprehensive Income |  | $ (28,290) | $ (42,582) | $ (14,699)
Amount of Gain (Loss) Reclassified from Accumulated Other Comprehensive Income into Earnings | [1] | (8,075) | (14,524) | 1,508
Interest rate swap | Designated as hedge |  |  |  |
Derivative financial instruments on consolidated statements of operations |  |  |  |
Amount of loss attributable to noncontrolling interest |  | 4,400 | 4,300 | 1,900
Interest expense | Interest rate swap | Designated as hedge |  |  |  |
Derivative financial instruments on consolidated statements of operations |  |  |  |
Amount of Gain (Loss) Recognized in Accumulated Other Comprehensive Income |  | (14,931) | (21,165) | (12,963)
Amount of Gain (Loss) Reclassified from Accumulated Other Comprehensive Income into Earnings |  | (6,974) | (1,861) | (388)
Earnings from equity method investments | Interest rate swap | Designated as hedge |  |  |  |
Derivative financial instruments on consolidated statements of operations |  |  |  |
Amount of Gain (Loss) Recognized in Accumulated Other Comprehensive Income |  | (13,359) | (21,417) | (1,736)
Amount of Gain (Loss) Reclassified from Accumulated Other Comprehensive Income into Earnings |  | $ (1,101) | $ (184) | $ 20
[1] | Reclassified to "Interest expense" in the Company's consolidated statements of operations are $6,974, $1,861 and $388 for the years ended December 31, 2020, 2019 and 2018, respectively. Amount reclassified to "Gain on consolidation of equity method investment" in the Company's consolidated statements of operations is $1,876 for the year ended December 31, 2018. Reclassified to "Earnings (losses) from equity method investments" in the Company's consolidated statements of operations are $1,101, $184 and $(20), respectively, for the years ended December 31, 2020, 2019 and 2018. Amount reclassified to "Other expense" in the Company's consolidated statements of operations is $11,673 for the year ended December 31, 2019 resulting from hedged forecasted transactions becoming not probable to occur. Amount reclassified to "Income from sales of real estate" in the Company's consolidated statements of operations is $806 for the year ended December 31, 2019.

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- Definition Amount, after tax and before reclassification, of gain (loss) from derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=121641772&loc=SL7669646-108580 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=121641772&loc=d3e637-108580 + Details
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