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Investments in Unconsolidated Joint Ventures - Combined Condensed Statements of Operations of Unconsolidated Joint Ventures (Details) - USD ($) $ in Thousands | 3 Months Ended
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Mar. 31, 2018 | Mar. 31, 2017
Revenues: |  |
Minimum rents | $ 160,447 | $ 157,039
Percentage rents | 2,243 | 2,468
Tenant recoveries | 59,504 | 59,354
Other | 12,108 | 12,537
Total revenues | 234,302 | 231,398
Expenses: |  |
Shopping center and operating expenses | 71,002 | 71,955
Interest expense | 49,758 | 49,005
Depreciation and amortization | 86,896 | 89,154
Total operating expenses | 207,656 | 210,114
Gain (loss) on sale or write down of assets, net | 970 | 4,546
Net (loss) income | 27,616 | 25,830
Company's equity in net (loss) income | 16,872 | 15,843
PPR Portfolio |  |
Revenues: |  |
Minimum rents | 32,739 | 33,536
Percentage rents | 432 | 730
Tenant recoveries | 11,400 | 11,439
Other | 1,017 | 1,026
Total revenues | 45,588 | 46,731
Expenses: |  |
Shopping center and operating expenses | 9,681 | 9,760
Interest expense | 16,726 | 16,726
Depreciation and amortization | 24,484 | 26,275
Total operating expenses | 50,891 | 52,761
Gain (loss) on sale or write down of assets, net | 0 | (35)
Net (loss) income | (5,303) | (6,065)
Company's equity in net (loss) income | (616) | (962)
Other Joint Ventures |  |
Revenues: |  |
Minimum rents | 127,708 | 123,503
Percentage rents | 1,811 | 1,738
Tenant recoveries | 48,104 | 47,915
Other | 11,091 | 11,511
Total revenues | 188,714 | 184,667
Expenses: |  |
Shopping center and operating expenses | 61,321 | 62,195
Interest expense | 33,032 | 32,279
Depreciation and amortization | 62,412 | 62,879
Total operating expenses | 156,765 | 157,353
Gain (loss) on sale or write down of assets, net | 970 | 4,581
Net (loss) income | 32,919 | 31,895
Company's equity in net (loss) income | $ 17,488 | $ 16,805

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