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Segment Information - Summary of Information about Company's Reportable Operating Segments (Detail) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2018 | Jun. 30, 2017 | Dec. 31, 2017
Segment Reporting Information [Line Items] |  |  |  |  |
Lease revenue and other property revenue | $ 205,015 | $ 228,259 | $ 412,540 | $ 460,056 |
Revenue from contracts with customers | 6,501 | 7,928 | 14,044 | 16,552 |
Total revenue from operations | 211,516 | 236,187 | 426,584 | 476,608 |
Rental operation expenses | (61,627) | (65,894) | (123,407) | (133,214) |
Net operating income | 149,889 | 170,293 | 303,177 | 343,394 |
Impairment charges | (18,060) | (28,096) | (48,504) | (50,069) |
Depreciation and amortization | (72,462) | (90,276) | (146,886) | (181,160) |
Interest income | 5,016 | 7,166 | 10,357 | 15,558 |
Other income (expense), net | (36,255) | (954) | (97,862) | (958) |
Unallocated expenses | (65,491) | (72,137) | (125,628) | (155,259) |
Hurricane property loss | (224) | 0 | (974) | 0 |
Equity in net income (loss) of joint ventures | 3,821 | (717) | 12,607 | (2,382) |
Adjustment (Reserve) of preferred equity interests, net | 1,625 | 0 | (2,336) | (76,000) |
Loss from continuing operations | (32,141) | (14,721) | (96,049) | (106,876) |
Total gross real estate assets | 7,891,867 | 8,972,219 | 7,891,867 | 8,972,219 |
Notes receivable, net | 19,670 | 19,590 | 19,670 | 19,590 | $ 19,675
Operating Segments | Shopping Center |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Lease revenue and other property revenue | 205,001 | 228,245 | 412,511 | 460,028 |
Revenue from contracts with customers | 6,501 | 7,928 | 14,044 | 16,552 |
Total revenue from operations | 211,502 | 236,173 | 426,555 | 476,580 |
Rental operation expenses | (61,627) | (65,880) | (123,407) | (133,201) |
Net operating income | 149,875 | 170,293 | 303,148 | 343,379 |
Impairment charges | (18,060) | (28,096) | (48,504) | (50,069) |
Depreciation and amortization | (72,462) | (90,276) | (146,886) | (181,160) |
Hurricane property loss | (224) |  | (974) |  |
Equity in net income (loss) of joint ventures | 3,821 | (717) | 12,607 | (2,382) |
Total gross real estate assets | 7,891,867 | 8,972,219 | 7,891,867 | 8,972,219 |
Operating Segments | Loan Investments |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Lease revenue and other property revenue | 14 | 14 | 29 | 28 |
Revenue from contracts with customers | 0 | 0 | 0 | 0 |
Total revenue from operations | 14 | 14 | 29 | 28 |
Rental operation expenses | 0 | (14) | 0 | (13) |
Net operating income | 14 |  | 29 | 15 |
Interest income | 5,016 | 7,166 | 10,357 | 15,558 |
Adjustment (Reserve) of preferred equity interests, net | 1,625 |  | (2,336) | (76,000) |
Notes receivable, net | 247,747 | 337,761 | 247,747 | 337,761 |
Corporate, Non-Segment |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Other income (expense), net | (36,255) | (954) | (97,862) | (958) |
Unallocated expenses | (65,491) | (72,137) | (125,628) | (155,259) |
Notes receivable, net | $ (228,077) | $ (318,171) | $ (228,077) | $ (318,171) |

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