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Segment Reporting (Details) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2016 USD ($) | Sep. 30, 2015 USD ($) | Sep. 30, 2016 USD ($) segment | Sep. 30, 2015 USD ($) | Dec. 31, 2015 USD ($)
Segment reporting |  |  |  |  |
Number of operating segments | segment |  |  | 4 |  |
Number of reportable segments | segment |  |  | 3 |  |
Revenues: |  |  |  |  |
Rental income | $ 165,503 | $ 158,863 | $ 490,922 | $ 460,193 |
Residents fees and services | 98,480 | 96,412 | 292,803 | 271,061 |
Total revenues | 263,983 | 255,275 | 783,725 | 731,254 |
Expenses: |  |  |  |  |
Property operating expenses | 103,347 | 96,927 | 298,776 | 276,313 |
Depreciation and amortization | 72,344 | 70,016 | 214,938 | 186,234 |
General and administrative | 12,107 | 10,316 | 34,931 | 32,563 |
Acquisition and certain other transaction related costs | 824 | 742 | 1,443 | 6,517 |
Impairment of assets | 4,578 | (98) | 16,930 | (98) |
Total expenses | 193,200 | 177,903 | 567,018 | 501,529 |
Operating income | 70,783 | 77,372 | 216,707 | 229,725 |
Dividend income | 659 |  | 1,449 |  |
Interest and other income | 89 | 57 | 330 | 274 |
Interest expense | (43,438) | (38,989) | (123,837) | (112,838) |
Loss on early extinguishment of debt | (84) | (21) | (90) | (1,469) |
Income from continuing operations before income tax expense and equity in earnings (losses) of an investee | 28,009 | 38,419 | 94,559 | 115,692 |
Income tax expense | (119) | (146) | (318) | (385) |
Equity in earnings (losses) of an investee | 13 | (24) | 107 | 70 |
Income from continuing operations | 27,903 | 38,249 | 94,348 | 115,377 |
Discontinued operations: |  |  |  |  |
Loss from discontinued operations | 0 | 0 | 0 | (350) |
Impairment of assets from discontinued operations | 0 | 0 | 0 | (602) |
Income before gain on sale of properties | 27,903 | 38,249 | 94,348 | 114,425 |
Gain on sale of properties | 0 | 0 | 4,061 | 0 |
Net income | 27,903 | 38,249 | 98,409 | 114,425 |
Total assets | 7,230,098 |  | 7,230,098 |  | $ 7,160,090
Triple Net Leased Senior Living Communities |  |  |  |  |
Revenues: |  |  |  |  |
Rental income | 66,520 | 64,222 | 198,269 | 180,820 |
Residents fees and services | 0 | 0 | 0 | 0 |
Total revenues | 66,520 | 64,222 | 198,269 | 180,820 |
Expenses: |  |  |  |  |
Property operating expenses | 47 | 0 | 833 | 0 |
Depreciation and amortization | 19,727 | 19,140 | 58,401 | 51,322 |
General and administrative | 0 | 0 | 0 | 0 |
Acquisition and certain other transaction related costs | 0 | 0 |  | 0 |
Impairment of assets | 2,191 | (98) | 6,583 | (98) |
Total expenses | 21,965 | 19,042 | 65,817 | 51,224 |
Operating income | 44,555 | 45,180 | 132,452 | 129,596 |
Dividend income | 0 |  | 0 |  |
Interest and other income | 0 | 0 | 0 | 0 |
Interest expense | (6,228) | (6,342) | (18,892) | (18,598) |
Loss on early extinguishment of debt | 0 | 0 | 0 | (6) |
Income from continuing operations before income tax expense and equity in earnings (losses) of an investee | 38,327 | 38,838 | 113,560 | 110,992 |
Income tax expense | 0 | 0 | 0 | 0 |
Equity in earnings (losses) of an investee | 0 | 0 | 0 | 0 |
Income from continuing operations |  |  |  | 110,992 |
Discontinued operations: |  |  |  |  |
Loss from discontinued operations |  |  |  | 0 |
Impairment of assets from discontinued operations |  |  |  | 0 |
Income before gain on sale of properties |  | 38,838 | 113,560 |  |
Gain on sale of properties |  |  | 4,061 |  |
Net income | 38,327 |  | 117,621 | 110,992 |
Total assets | 2,281,420 |  | 2,281,420 |  | 2,251,212
Managed senior living communities |  |  |  |  |
Revenues: |  |  |  |  |
Rental income | 0 | 0 | 0 | 0 |
Residents fees and services | 98,480 | 96,412 | 292,803 | 271,061 |
Total revenues | 98,480 | 96,412 | 292,803 | 271,061 |
Expenses: |  |  |  |  |
Property operating expenses | 74,763 | 71,983 | 218,582 | 204,178 |
Depreciation and amortization | 20,747 | 19,248 | 60,905 | 41,357 |
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 | 0 |
Total expenses | 97,904 | 91,231 | 281,881 | 245,535 |
Operating income | 576 | 5,181 | 10,922 | 25,526 |
Dividend income | 0 |  | 0 |  |
Interest and other income | 0 | 0 | 0 | 0 |
Interest expense | (2,104) | (2,705) | (7,332) | (7,285) |
Loss on early extinguishment of debt | (84) | 0 | (90) | (33) |
Income from continuing operations before income tax expense and equity in earnings (losses) of an investee | (1,612) | 2,476 | 3,500 | 18,208 |
Income tax expense | 0 | 0 | 0 | 0 |
Equity in earnings (losses) of an investee | 0 | 0 | 0 | 0 |
Income from continuing operations |  |  |  | 18,208 |
Discontinued operations: |  |  |  |  |
Loss from discontinued operations |  |  |  | 0 |
Impairment of assets from discontinued operations |  |  |  | 0 |
Income before gain on sale of properties |  | 2,476 | 3,500 |  |
Gain on sale of properties |  |  | 0 |  |
Net income | (1,612) |  | 3,500 | 18,208 |
Total assets | 1,272,441 |  | 1,272,441 |  | 1,260,425
MOBs |  |  |  |  |
Revenues: |  |  |  |  |
Rental income | 94,404 | 90,072 | 278,964 | 265,664 |
Residents fees and services | 0 | 0 | 0 | 0 |
Total revenues | 94,404 | 90,072 | 278,964 | 265,664 |
Expenses: |  |  |  |  |
Property operating expenses | 28,537 | 24,944 | 79,361 | 72,135 |
Depreciation and amortization | 30,922 | 30,680 | 92,788 | 90,711 |
General and administrative | 0 | 0 | 0 | 0 |
Acquisition and certain other transaction related costs | 0 | 0 |  | 0 |
Impairment of assets | (7) | 0 | 7,953 | 0 |
Total expenses | 59,452 | 55,624 | 180,102 | 162,846 |
Operating income | 34,952 | 34,448 | 98,862 | 102,818 |
Dividend income | 0 |  | 0 |  |
Interest and other income | 0 | 0 | 0 | 0 |
Interest expense | (5,599) | (1,707) | (7,398) | (5,232) |
Loss on early extinguishment of debt | 0 | 0 | 0 | 0 |
Income from continuing operations before income tax expense and equity in earnings (losses) of an investee | 29,353 | 32,741 | 91,464 | 97,586 |
Income tax expense | 0 | 0 | 0 | 0 |
Equity in earnings (losses) of an investee | 0 | 0 | 0 | 0 |
Income from continuing operations |  |  |  | 97,586 |
Discontinued operations: |  |  |  |  |
Loss from discontinued operations |  |  |  | (350) |
Impairment of assets from discontinued operations |  |  |  | (602) |
Income before gain on sale of properties |  | 32,741 | 91,464 |  |
Gain on sale of properties |  |  | 0 |  |
Net income | 29,353 |  | 91,464 | 96,634 |
Total assets | 3,343,492 |  | 3,343,492 |  | 3,362,214
All Other Operations |  |  |  |  |
Revenues: |  |  |  |  |
Rental income | 4,579 | 4,569 | 13,689 | 13,709 |
Residents fees and services | 0 | 0 | 0 | 0 |
Total revenues | 4,579 | 4,569 | 13,689 | 13,709 |
Expenses: |  |  |  |  |
Property operating expenses | 0 | 0 | 0 | 0 |
Depreciation and amortization | 948 | 948 | 2,844 | 2,844 |
General and administrative | 12,107 | 10,316 | 34,931 | 32,563 |
Acquisition and certain other transaction related costs | 824 | 742 | 1,443 | 6,517 |
Impairment of assets | 0 | 0 | 0 | 0 |
Total expenses | 13,879 | 12,006 | 39,218 | 41,924 |
Operating income | (9,300) | (7,437) | (25,529) | (28,215) |
Dividend income | 659 |  | 1,449 |  |
Interest and other income | 89 | 57 | 330 | 274 |
Interest expense | (29,507) | (28,235) | (90,215) | (81,723) |
Loss on early extinguishment of debt | 0 | (21) | 0 | (1,430) |
Income from continuing operations before income tax expense and equity in earnings (losses) of an investee | (38,059) | (35,636) | (113,965) | (111,094) |
Income tax expense | (119) | (146) | (318) | (385) |
Equity in earnings (losses) of an investee | 13 | (24) | 107 | 70 |
Income from continuing operations |  |  |  | (111,409) |
Discontinued operations: |  |  |  |  |
Loss from discontinued operations |  |  |  | 0 |
Impairment of assets from discontinued operations |  |  |  | 0 |
Income before gain on sale of properties |  | $ (35,806) | (114,176) |  |
Gain on sale of properties |  |  | 0 |  |
Net income | (38,165) |  | (114,176) | $ (111,409) |
Total assets | $ 332,745 |  | $ 332,745 |  | $ 286,239

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