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Segment Reporting (Details) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2016 USD ($) | Sep. 30, 2016 USD ($) | Jun. 30, 2016 USD ($) | Mar. 31, 2016 USD ($) | Dec. 31, 2015 USD ($) | Sep. 30, 2015 USD ($) | Jun. 30, 2015 USD ($) | Mar. 31, 2015 USD ($) | Dec. 31, 2016 USD ($) segment | Dec. 31, 2015 USD ($) | Dec. 31, 2014 USD ($)
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Number of reportable segments | segment |  |  |  |  |  |  |  |  | 3 |  |
Revenues | $ 54,121 | $ 43,855 | $ 43,918 | $ 48,045 | $ 51,286 | $ 51,124 | $ 49,176 | $ 49,073 | $ 189,939 | $ 199,063 | $ 179,681
Property operating expenses, other operating and real estate taxes |  |  |  |  |  |  |  |  | (57,391) | (58,482) | (51,671)
General and administrative expenses |  |  |  |  |  |  |  |  | (40,648) | (30,368) | (27,433)
Depreciation and amortization |  |  |  |  |  |  |  |  | (70,011) | (60,751) | (49,645)
Impairment of asset |  |  |  |  |  |  |  |  | 0 | (5,000) | 0
Operating income |  |  |  |  |  |  |  |  | 21,889 | 44,462 | 50,932
Equity in (losses) earnings of unconsolidated affiliates |  |  |  |  |  |  |  |  | 39,449 | 37,330 | 111,578
Interest income |  |  |  |  |  |  |  |  | 25,829 | 16,603 | 12,607
Other |  |  |  |  |  |  |  |  | 0 | 1,596 | 2,724
Interest and other finance expense |  |  |  |  |  |  |  |  | (34,645) | (37,297) | (39,426)
Gain on disposition of properties |  |  |  |  |  |  |  |  | 81,965 | 89,063 | 13,138
Income tax benefit (provision) |  |  |  |  |  |  |  |  | 105 | (1,787) | (629)
Income from continuing operations |  |  |  |  |  |  |  |  |  |  | 150,924
Income from discontinued operations |  |  |  |  |  |  |  |  | 0 | 0 | 1,222
Net income | 34,236 | 326 | 26,155 | 73,875 | 7,871 | 18,104 | 85,458 | 38,537 | 134,592 | 149,970 | 152,146
Net (income) loss attributable to noncontrolling interests | (14,415) | $ 5,786 | $ (8,237) | $ (44,950) | 1,019 | $ (4,328) | $ (58,963) | $ (21,990) | (61,816) | (84,262) | (81,082)
Net income attributable to Acadia |  |  |  |  |  |  |  |  | 72,776 | 65,708 | 71,064
Real estate at cost | 3,382,000 |  |  |  | 2,736,283 |  |  |  | 3,382,000 | 2,736,283 | 2,208,595
Total assets | 3,995,960 |  |  |  | 3,032,319 |  |  |  | 3,995,960 | 3,032,319 | 2,720,721
Acquisition of real estate | 495,644 |  |  |  | 338,700 |  |  |  | 495,644 | 338,700 | 256,453
Development and property improvement costs | 149,434 |  |  |  | 164,315 |  |  |  | 149,434 | 164,315 | 140,118
Core Portfolio [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 150,211 | 150,015 | 125,022
Property operating expenses, other operating and real estate taxes |  |  |  |  |  |  |  |  | (39,598) | (37,259) | (33,097)
General and administrative expenses |  |  |  |  |  |  |  |  | 0 | 0 | 0
Depreciation and amortization |  |  |  |  |  |  |  |  | (54,582) | (46,223) | (35,875)
Impairment of asset |  |  |  |  |  |  |  |  |  | (5,000) |
Operating income |  |  |  |  |  |  |  |  | 56,031 | 61,533 | 56,050
Equity in (losses) earnings of unconsolidated affiliates |  |  |  |  |  |  |  |  | 3,774 | 1,169 | (77)
Interest income |  |  |  |  |  |  |  |  | 0 | 0 | 0
Other |  |  |  |  |  |  |  |  |  | 0 | 0
Interest and other finance expense |  |  |  |  |  |  |  |  | (27,435) | (27,945) | (27,024)
Gain on disposition of properties |  |  |  |  |  |  |  |  | 0 | 0 | 12,577
Income tax benefit (provision) |  |  |  |  |  |  |  |  | 0 | 0 | 0
Income from continuing operations |  |  |  |  |  |  |  |  |  |  | 41,526
Income from discontinued operations |  |  |  |  |  |  |  |  |  |  | 0
Net income |  |  |  |  |  |  |  |  | 32,370 | 34,757 | 41,526
Net (income) loss attributable to noncontrolling interests |  |  |  |  |  |  |  |  | (3,411) | (140) | (3,222)
Net income attributable to Acadia |  |  |  |  |  |  |  |  | 28,959 | 34,617 | 38,304
Real estate at cost | 1,982,763 |  |  |  | 1,572,681 |  |  |  | 1,982,763 | 1,572,681 | 1,366,017
Total assets | 2,271,620 |  |  |  | 1,662,092 |  |  |  | 2,271,620 | 1,662,092 | 1,613,290
Acquisition of real estate | 323,880 |  |  |  | 181,884 |  |  |  | 323,880 | 181,884 | 206,203
Development and property improvement costs | 13,434 |  |  |  | 16,505 |  |  |  | 13,434 | 16,505 | 5,432
Funds |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 39,728 | 49,048 | 54,659
Property operating expenses, other operating and real estate taxes |  |  |  |  |  |  |  |  | (17,793) | (21,223) | (18,574)
General and administrative expenses |  |  |  |  |  |  |  |  | 0 | 0 | 0
Depreciation and amortization |  |  |  |  |  |  |  |  | (15,429) | (14,528) | (13,770)
Impairment of asset |  |  |  |  |  |  |  |  |  | 0 |
Operating income |  |  |  |  |  |  |  |  | 6,506 | 13,297 | 22,315
Equity in (losses) earnings of unconsolidated affiliates |  |  |  |  |  |  |  |  | 35,675 | 36,161 | 111,655
Interest income |  |  |  |  |  |  |  |  | 0 | 0 | 0
Other |  |  |  |  |  |  |  |  |  | 0 | 0
Interest and other finance expense |  |  |  |  |  |  |  |  | (7,210) | (9,352) | (12,402)
Gain on disposition of properties |  |  |  |  |  |  |  |  | 81,965 | 89,063 | 561
Income tax benefit (provision) |  |  |  |  |  |  |  |  | 0 | 0 | 0
Income from continuing operations |  |  |  |  |  |  |  |  |  |  | 122,129
Income from discontinued operations |  |  |  |  |  |  |  |  |  |  | 1,222
Net income |  |  |  |  |  |  |  |  | 116,936 | 129,169 | 123,351
Net (income) loss attributable to noncontrolling interests |  |  |  |  |  |  |  |  | (58,405) | (84,122) | (77,860)
Net income attributable to Acadia |  |  |  |  |  |  |  |  | 58,531 | 45,047 | 45,491
Real estate at cost | 1,399,237 |  |  |  | 1,163,602 |  |  |  | 1,399,237 | 1,163,602 | 842,578
Total assets | 1,448,177 |  |  |  | 1,223,039 |  |  |  | 1,448,177 | 1,223,039 | 1,005,145
Acquisition of real estate | 171,764 |  |  |  | 156,816 |  |  |  | 171,764 | 156,816 | 50,250
Development and property improvement costs | 136,000 |  |  |  | 147,810 |  |  |  | 136,000 | 147,810 | 134,686
Structuring Financing |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 0 | 0 | 0
Property operating expenses, other operating and real estate taxes |  |  |  |  |  |  |  |  | 0 | 0 | 0
General and administrative expenses |  |  |  |  |  |  |  |  | 0 | 0 | 0
Depreciation and amortization |  |  |  |  |  |  |  |  | 0 | 0 | 0
Impairment of asset |  |  |  |  |  |  |  |  |  | 0 |
Operating income |  |  |  |  |  |  |  |  | 0 | 0 | 0
Equity in (losses) earnings of unconsolidated affiliates |  |  |  |  |  |  |  |  | 0 | 0 | 0
Interest income |  |  |  |  |  |  |  |  | 25,829 | 16,603 | 12,607
Other |  |  |  |  |  |  |  |  |  | 1,596 | 2,724
Interest and other finance expense |  |  |  |  |  |  |  |  | 0 | 0 | 0
Gain on disposition of properties |  |  |  |  |  |  |  |  | 0 | 0 | 0
Income tax benefit (provision) |  |  |  |  |  |  |  |  | 0 | 0 | 0
Income from continuing operations |  |  |  |  |  |  |  |  |  |  | 15,331
Income from discontinued operations |  |  |  |  |  |  |  |  |  |  | 0
Net income |  |  |  |  |  |  |  |  | 25,829 | 18,199 | 15,331
Net (income) loss attributable to noncontrolling interests |  |  |  |  |  |  |  |  | 0 | 0 | 0
Net income attributable to Acadia |  |  |  |  |  |  |  |  | 25,829 | 18,199 | 15,331
Real estate at cost | 0 |  |  |  | 0 |  |  |  | 0 | 0 | 0
Total assets | 276,163 |  |  |  | 147,188 |  |  |  | 276,163 | 147,188 | 102,286
Acquisition of real estate | 0 |  |  |  | 0 |  |  |  | 0 | 0 | 0
Development and property improvement costs | 0 |  |  |  | 0 |  |  |  | 0 | 0 | 0
Other |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 0 | 0 | 0
Property operating expenses, other operating and real estate taxes |  |  |  |  |  |  |  |  | 0 | 0 | 0
General and administrative expenses |  |  |  |  |  |  |  |  | (40,648) | (30,368) | (27,433)
Depreciation and amortization |  |  |  |  |  |  |  |  | 0 | 0 | 0
Impairment of asset |  |  |  |  |  |  |  |  |  | 0 |
Operating income |  |  |  |  |  |  |  |  | (40,648) | (30,368) | (27,433)
Equity in (losses) earnings of unconsolidated affiliates |  |  |  |  |  |  |  |  | 0 | 0 | 0
Interest income |  |  |  |  |  |  |  |  | 0 | 0 | 0
Other |  |  |  |  |  |  |  |  |  | 0 | 0
Interest and other finance expense |  |  |  |  |  |  |  |  | 0 | 0 | 0
Gain on disposition of properties |  |  |  |  |  |  |  |  | 0 | 0 | 0
Income tax benefit (provision) |  |  |  |  |  |  |  |  | 105 | (1,787) | (629)
Income from continuing operations |  |  |  |  |  |  |  |  |  |  | (28,062)
Income from discontinued operations |  |  |  |  |  |  |  |  |  |  | 0
Net income |  |  |  |  |  |  |  |  | (40,543) | (32,155) | (28,062)
Net (income) loss attributable to noncontrolling interests |  |  |  |  |  |  |  |  | 0 | 0 | 0
Net income attributable to Acadia |  |  |  |  |  |  |  |  | (40,543) | (32,155) | (28,062)
Real estate at cost | 0 |  |  |  | 0 |  |  |  | 0 | 0 | 0
Total assets | 0 |  |  |  | 0 |  |  |  | 0 | 0 | 0
Acquisition of real estate | 0 |  |  |  | 0 |  |  |  | 0 | 0 | 0
Development and property improvement costs | $ 0 |  |  |  | $ 0 |  |  |  | $ 0 | $ 0 | $ 0

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