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Segment Reporting (Details) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2017 USD ($) | Sep. 30, 2016 USD ($) | Sep. 30, 2017 USD ($) segment | Sep. 30, 2016 USD ($) | Dec. 31, 2016 USD ($)
Segment Reporting [Abstract] |  |  |  |  |
Number of operating segments | segment |  |  | 4 |  |
Number of reportable segments | segment |  |  | 3 |  |
Revenues: |  |  |  |  |
Rental income | $ 168,348 | $ 165,503 | $ 501,437 | $ 490,922 |
Residents fees and services | 98,331 | 98,480 | 294,816 | 292,803 |
Total revenues | 266,679 | 263,983 | 796,253 | 783,725 |
Expenses: |  |  |  |  |
Property operating expenses | 104,714 | 103,347 | 308,565 | 298,776 |
Depreciation and amortization | 66,619 | 72,344 | 209,463 | 214,938 |
General and administrative | 19,883 | 12,107 | 57,889 | 34,931 |
Acquisition and certain other transaction related costs | 0 | 824 | 292 | 1,443 |
Impairment of assets | 0 | 4,578 | 5,082 | 16,930 |
Total expenses | 191,216 | 193,200 | 581,291 | 567,018 |
Operating income | 75,463 | 70,783 | 214,962 | 216,707 |
Dividend income | 659 | 659 | 1,978 | 1,449 |
Interest and other income | 128 | 89 | 323 | 330 |
Interest expense | (40,105) | (43,438) | (124,394) | (123,837) |
Loss on early extinguishment of debt | (274) | (84) | (7,627) | (90) |
Income from continuing operations before income tax expense and equity in earnings of an investee | 35,871 | 28,009 | 85,242 | 94,559 |
Income tax expense | (109) | (119) | (300) | (318) |
Equity in earnings of an investee | 31 | 13 | 533 | 107 |
Net income | 35,793 | 27,903 | 85,475 | 98,409 |
Income before gain on sale of properties | 35,793 | 27,903 | 85,475 | 94,348 |
Gain on sale of properties | 0 | 0 | 0 | 4,061 |
Net income attributable to noncontrolling interest | (1,379) | 0 | (2,865) | 0 |
Net income attributable to common shareholders | 34,414 | 27,903 | 82,610 | 98,409 |
Total assets | 7,187,741 |  | 7,187,741 |  | $ 7,227,754
Triple Net Leased Senior Living Communities |  |  |  |  |
Revenues: |  |  |  |  |
Rental income | 67,662 | 66,520 | 202,340 | 198,269 |
Residents fees and services | 0 | 0 | 0 | 0 |
Total revenues | 67,662 | 66,520 | 202,340 | 198,269 |
Expenses: |  |  |  |  |
Property operating expenses | 0 | 47 | 0 | 833 |
Depreciation and amortization | 20,629 | 19,727 | 61,434 | 58,401 |
General and administrative | 0 | 0 | 0 | 0 |
Acquisition and certain other transaction related costs |  | 0 | 0 | 0 |
Impairment of assets |  | 2,191 | 0 | 6,583 |
Total expenses | 20,629 | 21,965 | 61,434 | 65,817 |
Operating income | 47,033 | 44,555 | 140,906 | 132,452 |
Dividend income | 0 | 0 | 0 | 0 |
Interest and other income | 0 | 0 | 0 | 0 |
Interest expense | (655) | (6,228) | (8,205) | (18,892) |
Loss on early extinguishment of debt | 0 | 0 | (7,294) | 0 |
Income from continuing operations before income tax expense and equity in earnings of an investee | 46,378 | 38,327 | 125,407 | 113,560 |
Income tax expense | 0 | 0 | 0 | 0 |
Equity in earnings of an investee | 0 | 0 | 0 | 0 |
Net income | 46,378 |  | 125,407 |  |
Income before gain on sale of properties |  |  |  | 113,560 |
Gain on sale of properties |  |  |  | 4,061 |
Net income attributable to noncontrolling interest | 0 |  | 0 |  |
Net income attributable to common shareholders | 46,378 | 38,327 | 125,407 | 117,621 |
Total assets | 2,270,952 |  | 2,270,952 |  | 2,289,045
Managed Senior Living Communities |  |  |  |  |
Revenues: |  |  |  |  |
Rental income | 0 | 0 | 0 | 0 |
Residents fees and services | 98,331 | 98,480 | 294,816 | 292,803 |
Total revenues | 98,331 | 98,480 | 294,816 | 292,803 |
Expenses: |  |  |  |  |
Property operating expenses | 75,556 | 74,763 | 224,585 | 218,582 |
Depreciation and amortization | 12,691 | 20,747 | 49,295 | 60,905 |
General and administrative | 0 | 0 | 0 | 0 |
Acquisition and certain other transaction related costs |  | 0 | 0 | 0 |
Impairment of assets |  | 2,394 | 0 | 2,394 |
Total expenses | 88,247 | 97,904 | 273,880 | 281,881 |
Operating income | 10,084 | 576 | 20,936 | 10,922 |
Dividend income | 0 | 0 | 0 | 0 |
Interest and other income | 0 | 0 | 0 | 0 |
Interest expense | (1,172) | (2,104) | (3,523) | (7,332) |
Loss on early extinguishment of debt | 0 | (84) | 0 | (90) |
Income from continuing operations before income tax expense and equity in earnings of an investee | 8,912 | (1,612) | 17,413 | 3,500 |
Income tax expense | 0 | 0 | 0 | 0 |
Equity in earnings of an investee | 0 | 0 | 0 | 0 |
Net income | 8,912 |  | 17,413 |  |
Income before gain on sale of properties |  |  |  | 3,500 |
Gain on sale of properties |  |  |  | 0 |
Net income attributable to noncontrolling interest | 0 |  | 0 |  |
Net income attributable to common shareholders | 8,912 | (1,612) | 17,413 | 3,500 |
Total assets | 1,241,190 |  | 1,241,190 |  | 1,260,032
MOBs |  |  |  |  |
Revenues: |  |  |  |  |
Rental income | 96,116 | 94,404 | 285,413 | 278,964 |
Residents fees and services | 0 | 0 | 0 | 0 |
Total revenues | 96,116 | 94,404 | 285,413 | 278,964 |
Expenses: |  |  |  |  |
Property operating expenses | 29,158 | 28,537 | 83,980 | 79,361 |
Depreciation and amortization | 32,351 | 30,922 | 95,890 | 92,788 |
General and administrative | 0 | 0 | 0 | 0 |
Acquisition and certain other transaction related costs |  | 0 | 0 | 0 |
Impairment of assets |  | (7) | 0 | 7,953 |
Total expenses | 61,509 | 59,452 | 179,870 | 180,102 |
Operating income | 34,607 | 34,952 | 105,543 | 98,862 |
Dividend income | 0 | 0 | 0 | 0 |
Interest and other income | 0 | 0 | 0 | 0 |
Interest expense | (6,172) | (5,599) | (18,742) | (7,398) |
Loss on early extinguishment of debt | 0 | 0 | (59) | 0 |
Income from continuing operations before income tax expense and equity in earnings of an investee | 28,435 | 29,353 | 86,742 | 91,464 |
Income tax expense | 0 | 0 | 0 | 0 |
Equity in earnings of an investee | 0 | 0 | 0 | 0 |
Net income | 28,435 |  | 86,742 |  |
Income before gain on sale of properties |  |  |  | 91,464 |
Gain on sale of properties |  |  |  | 0 |
Net income attributable to noncontrolling interest | (1,379) |  | (2,865) |  |
Net income attributable to common shareholders | 27,056 | 29,353 | 83,877 | 91,464 |
Total assets | 3,290,138 |  | 3,290,138 |  | 3,333,141
All Other Operations |  |  |  |  |
Revenues: |  |  |  |  |
Rental income | 4,570 | 4,579 | 13,684 | 13,689 |
Residents fees and services | 0 | 0 | 0 | 0 |
Total revenues | 4,570 | 4,579 | 13,684 | 13,689 |
Expenses: |  |  |  |  |
Property operating expenses | 0 | 0 | 0 | 0 |
Depreciation and amortization | 948 | 948 | 2,844 | 2,844 |
General and administrative | 19,883 | 12,107 | 57,889 | 34,931 |
Acquisition and certain other transaction related costs |  | 824 | 292 | 1,443 |
Impairment of assets |  | 0 | 5,082 | 0 |
Total expenses | 20,831 | 13,879 | 66,107 | 39,218 |
Operating income | (16,261) | (9,300) | (52,423) | (25,529) |
Dividend income | 659 | 659 | 1,978 | 1,449 |
Interest and other income | 128 | 89 | 323 | 330 |
Interest expense | (32,106) | (29,507) | (93,924) | (90,215) |
Loss on early extinguishment of debt | (274) | 0 | (274) | 0 |
Income from continuing operations before income tax expense and equity in earnings of an investee | (47,854) | (38,059) | (144,320) | (113,965) |
Income tax expense | (109) | (119) | (300) | (318) |
Equity in earnings of an investee | 31 | 13 | 533 | 107 |
Net income | (47,932) |  | (144,087) |  |
Income before gain on sale of properties |  |  |  | (114,176) |
Gain on sale of properties |  |  |  | 0 |
Net income attributable to noncontrolling interest | 0 |  | 0 |  |
Net income attributable to common shareholders | (47,932) | $ (38,165) | (144,087) | $ (114,176) |
Total assets | $ 385,461 |  | $ 385,461 |  | $ 345,536

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