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Segment Reporting - Summary of Segment Information (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Segment Reporting Information [Line Items] |  |  |
Total revenues | $ 255,484,000 | $ 295,327,000 | $ 259,681,000
Depreciation and amortization | (149,793,000) | (125,443,000) | (117,549,000)
Property operating expenses, other operating and real estate taxes | (100,100,000) | (90,468,000) | (80,248,000)
General and administrative expenses | (36,055,000) | (35,416,000) | (34,343,000)
Impairment charges | (85,598,000) | (1,721,000) |
Gain on disposition of properties | 683,000 | 30,324,000 | 5,140,000
Operating (loss) income | (115,379,000) | 72,603,000 | 32,681,000
Interest income | 8,979,000 | 7,988,000 | 13,231,000
Equity in earnings (losses) of unconsolidated affiliates inclusive of gains on disposition of properties | (1,237,000) | 8,922,000 | 9,302,000
Interest expense | (72,060,000) | (73,788,000) | (69,978,000)
Gain (loss) on investment | 113,930,000 | 6,947,000 |
Income tax provision | (271,000) | (1,468,000) | (934,000)
Net (loss) income | (66,038,000) | 21,204,000 | (15,698,000)
Net loss attributable to noncontrolling interests | 57,279,000 | 31,841,000 | 47,137,000
Net (loss) income attributable to Acadia | (8,759,000) | 53,045,000 | 31,439,000
Real estate at cost | 4,094,288,000 | 4,039,536,000 | 3,697,805,000
Total Assets | 4,186,882,000 | 4,309,114,000 | 3,958,780,000
Cash paid for acquisition of real estate and leasehold interest | 21,208,000 | 319,673,000 | 147,985,000
Cash paid for development and property improvement costs | 40,483,000 | 89,270,000 | 94,834,000
Cash paid for acquisition of real estate |  | 358,704,000 |
Core Portfolio |  |  |
Segment Reporting Information [Line Items] |  |  |
Gain (loss) on investment | 0 |  |
Operating Segments | Core Portfolio |  |  |
Segment Reporting Information [Line Items] |  |  |
Total revenues | 160,262,000 | 173,177,000 | 166,816,000
Depreciation and amortization | (76,125,000) | (61,819,000) | (60,903,000)
Property operating expenses, other operating and real estate taxes | (57,246,000) | (47,032,000) | (44,060,000)
General and administrative expenses | 0 | 0 | 0
Impairment charges | (419,000) | 0 |
Gain on disposition of properties | 174,000 | 16,771,000 | 0
Operating (loss) income | 26,646,000 | 81,097,000 | 61,853,000
Interest income | 0 | 0 | 0
Equity in earnings (losses) of unconsolidated affiliates inclusive of gains on disposition of properties | (874,000) | 9,020,000 | 7,415,000
Interest expense | (33,185,000) | (28,304,000) | (27,575,000)
Gain (loss) on investment | 18,564,000 | 327,000 |
Income tax provision | 0 | 0 | 0
Net (loss) income | 11,151,000 | 62,140,000 | 41,693,000
Net loss attributable to noncontrolling interests | (5,837,000) | 337,000 | 752,000
Net (loss) income attributable to Acadia | 5,314,000 | 62,477,000 | 42,445,000
Real estate at cost | 2,330,116,000 | 2,252,230,000 | 2,069,439,000
Total Assets | 2,254,680,000 | 2,350,833,000 | 2,232,695,000
Cash paid for acquisition of real estate and leasehold interest | 19,963,000 |  | 1,343,000
Cash paid for development and property improvement costs | 11,170,000 | 22,724,000 | 32,662,000
Cash paid for acquisition of real estate |  | 173,892,000 |
Operating Segments | Opportunity Funds |  |  |
Segment Reporting Information [Line Items] |  |  |
Total revenues | 95,222,000 | 122,150,000 | 92,865,000
Depreciation and amortization | (73,668,000) | (63,624,000) | (56,646,000)
Property operating expenses, other operating and real estate taxes | (42,854,000) | (43,436,000) | (36,188,000)
General and administrative expenses | 0 | 0 | 0
Impairment charges | (85,179,000) | (1,721,000) |
Gain on disposition of properties | 509,000 | 13,553,000 | 5,140,000
Operating (loss) income | (105,970,000) | 26,922,000 | 5,171,000
Interest income | 0 | 0 | 0
Equity in earnings (losses) of unconsolidated affiliates inclusive of gains on disposition of properties | (363,000) | (98,000) | 1,887,000
Interest expense | (38,875,000) | (45,484,000) | (42,403,000)
Gain (loss) on investment | 95,366,000 | 6,620,000 |
Income tax provision | 0 | 0 | 0
Net (loss) income | (49,842,000) | (12,040,000) | (35,345,000)
Net loss attributable to noncontrolling interests | 63,116,000 | 31,504,000 | 46,385,000
Net (loss) income attributable to Acadia | 13,274,000 | 19,464,000 | 11,040,000
Real estate at cost | 1,764,172,000 | 1,787,306,000 | 1,628,366,000
Total Assets | 1,830,752,000 | 1,843,338,000 | 1,616,472,000
Cash paid for acquisition of real estate and leasehold interest | 1,245,000 |  | 146,642,000
Cash paid for development and property improvement costs | 29,313,000 | 66,546,000 | 62,172,000
Cash paid for acquisition of real estate |  | 184,812,000 |
Operating Segments | Structured Financing |  |  |
Segment Reporting Information [Line Items] |  |  |
Total revenues | 0 | 0 | 0
Depreciation and amortization | 0 | 0 | 0
Property operating expenses, other operating and real estate taxes | 0 | 0 | 0
General and administrative expenses | 0 | 0 | 0
Impairment charges | 0 | 0 |
Gain on disposition of properties | 0 | 0 | 0
Operating (loss) income | 0 | 0 | 0
Interest income | 8,979,000 | 7,988,000 | 13,231,000
Equity in earnings (losses) of unconsolidated affiliates inclusive of gains on disposition of properties | 0 | 0 | 0
Interest expense | 0 | 0 | 0
Gain (loss) on investment | 0 | 0 |
Income tax provision | 0 | 0 | 0
Net (loss) income | 8,979,000 | 7,988,000 | 13,231,000
Net loss attributable to noncontrolling interests | 0 | 0 | 0
Net (loss) income attributable to Acadia | 8,979,000 | 7,988,000 | 13,231,000
Real estate at cost | 0 | 0 | 0
Total Assets | 101,450,000 | 114,943,000 | 109,613,000
Cash paid for acquisition of real estate and leasehold interest | 0 |  | 0
Cash paid for development and property improvement costs | 0 | 0 | 0
Cash paid for acquisition of real estate |  | 0 |
Unallocated |  |  |
Segment Reporting Information [Line Items] |  |  |
Total revenues | 0 | 0 | 0
Depreciation and amortization | 0 | 0 | 0
Property operating expenses, other operating and real estate taxes | 0 | 0 | 0
General and administrative expenses | (36,055,000) | (35,416,000) | (34,343,000)
Impairment charges | 0 | 0 |
Gain on disposition of properties | 0 | 0 | 0
Operating (loss) income | (36,055,000) | (35,416,000) | (34,343,000)
Interest income | 0 | 0 | 0
Equity in earnings (losses) of unconsolidated affiliates inclusive of gains on disposition of properties | 0 | 0 | 0
Interest expense | 0 | 0 | 0
Gain (loss) on investment | 0 | 0 |
Income tax provision | (271,000) | (1,468,000) | (934,000)
Net (loss) income | (36,326,000) | (36,884,000) | (35,277,000)
Net loss attributable to noncontrolling interests | 0 | 0 | 0
Net (loss) income attributable to Acadia | (36,326,000) | (36,884,000) | (35,277,000)
Real estate at cost | 0 | 0 | 0
Total Assets | 0 | 0 | 0
Cash paid for acquisition of real estate and leasehold interest | 0 |  | 0
Cash paid for development and property improvement costs | $ 0 | 0 | $ 0
Cash paid for acquisition of real estate |  | $ 0 |

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