0000001 - Document - Cover link:presentationLink link:calculationLink link:definitionLink 9952151 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS link:presentationLink link:calculationLink link:definitionLink 9952152 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 9952153 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) link:presentationLink link:calculationLink link:definitionLink 9952154 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 9952155 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY link:presentationLink link:calculationLink link:definitionLink 9952156 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS link:presentationLink link:calculationLink link:definitionLink 9952157 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - Supplemental (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 9952158 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - Cash and Restricted Cash (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 9952159 - Disclosure - Basis of Presentation link:presentationLink link:calculationLink link:definitionLink 9952160 - Disclosure - Recent Accounting Pronouncements link:presentationLink link:calculationLink link:definitionLink 9952161 - Disclosure - Real Estate and Other Investments link:presentationLink link:calculationLink link:definitionLink 9952162 - Disclosure - Senior Living Community Management Agreements link:presentationLink link:calculationLink link:definitionLink 9952163 - Disclosure - Leases link:presentationLink link:calculationLink link:definitionLink 9952164 - Disclosure - Indebtedness link:presentationLink link:calculationLink link:definitionLink 9952165 - Disclosure - Fair Value of Assets and Liabilities link:presentationLink link:calculationLink link:definitionLink 9952166 - Disclosure - Shareholders' Equity link:presentationLink link:calculationLink link:definitionLink 9952167 - Disclosure - Segment Reporting link:presentationLink link:calculationLink link:definitionLink 9952168 - Disclosure - Business and Property Management Agreements with RMR link:presentationLink link:calculationLink link:definitionLink 9952169 - Disclosure - Related Person Transactions link:presentationLink link:calculationLink link:definitionLink 9952170 - Disclosure - Derivatives and Hedging Activities link:presentationLink link:calculationLink link:definitionLink 9952171 - Disclosure - Income Taxes link:presentationLink link:calculationLink link:definitionLink 9952172 - Disclosure - Weighted Average Common Shares link:presentationLink link:calculationLink link:definitionLink 9955511 - Disclosure - Recent Accounting Pronouncements (Policies) link:presentationLink link:calculationLink link:definitionLink 9955512 - Disclosure - Real Estate and Other Investments (Tables) link:presentationLink link:calculationLink link:definitionLink 9955513 - Disclosure - Senior Living Community Management Agreements (Tables) link:presentationLink link:calculationLink link:definitionLink 9955514 - Disclosure - Indebtedness (Tables) link:presentationLink link:calculationLink link:definitionLink 9955515 - Disclosure - Fair Value of Assets and Liabilities (Tables) link:presentationLink link:calculationLink link:definitionLink 9955516 - Disclosure - Shareholders' Equity (Tables) link:presentationLink link:calculationLink link:definitionLink 9955517 - Disclosure - Segment Reporting (Tables) link:presentationLink link:calculationLink link:definitionLink 9955518 - Disclosure - Business and Property Management Agreements with RMR (Tables) link:presentationLink link:calculationLink link:definitionLink 9955519 - Disclosure - Derivatives and Hedging Activities (Tables) link:presentationLink link:calculationLink link:definitionLink 9955520 - Disclosure - Real Estate and Other Investments - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955521 - Disclosure - Real Estate and Other Investments - Schedule of Disposal Groups (Details) link:presentationLink link:calculationLink link:definitionLink 9955522 - Disclosure - Real Estate and Other Investments - Schedule of Capital Expenditures (Details) link:presentationLink link:calculationLink link:definitionLink 9955523 - Disclosure - Senior Living Community Management Agreements - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955523 - Disclosure - Senior Living Community Management Agreements - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955524 - Disclosure - Senior Living Community Management Agreements - Schedule of Disaggregation of Revenue (Details) link:presentationLink link:calculationLink link:definitionLink 9955525 - Disclosure - Senior Living Community Management Agreements - Schedule of Our Senior Living Communities (Details) link:presentationLink link:calculationLink link:definitionLink 9955526 - Disclosure - Leases (Details) link:presentationLink link:calculationLink link:definitionLink 9955527 - Disclosure - Indebtedness - Schedule of Outstanding Debts (Details) link:presentationLink link:calculationLink link:definitionLink 9955528 - Disclosure - Indebtedness - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955529 - Disclosure - Indebtedness - Schedule of Secured and Other Debt (Details) link:presentationLink link:calculationLink link:definitionLink 9955530 - Disclosure - Indebtedness - Schedule of Principal Payments of Debt (Details) link:presentationLink link:calculationLink link:definitionLink 9955531 - Disclosure - Fair Value of Assets and Liabilities - Assets and Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 9955532 - Disclosure - Fair Value of Assets and Liabilities - Schedule of the Change in Fair Value of the Investment in the Unconsolidated Joint Venture (Details) link:presentationLink link:calculationLink link:definitionLink 9955533 - Disclosure - Fair Value of Assets and Liabilities - Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 9955534 - Disclosure - Fair Value of Assets and Liabilities - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955535 - Disclosure - Shareholders' Equity - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955536 - Disclosure - Shareholders' Equity - Schedule of Dividends Declared and Paid (Details) link:presentationLink link:calculationLink link:definitionLink 9955537 - Disclosure - Segment Reporting - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955538 - Disclosure - Segment Reporting - Income Statements (Details) link:presentationLink link:calculationLink link:definitionLink 9955539 - Disclosure - Segment Reporting - Assets (Details) link:presentationLink link:calculationLink link:definitionLink 9955540 - Disclosure - Business and Property Management Agreements with RMR - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955541 - Disclosure - Business and Property Management Agreements with RMR-Schedule of Business Management Fees, Property Management Fees and Construction Supervision Fees Recognized (Details) link:presentationLink link:calculationLink link:definitionLink 9955541 - Disclosure - Business and Property Management Agreements with RMR-Schedule of Business Management Fees, Property Management Fees and Construction Supervision Fees Recognized (Details) link:presentationLink link:calculationLink link:definitionLink 9955542 - Disclosure - Related Person Transactions (Details) link:presentationLink link:calculationLink link:definitionLink 9955543 - Disclosure - Derivative and Hedging Activities - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955544 - Disclosure - Derivatives and Hedging Activities - Schedule of Interest Rate Agreement (Details) link:presentationLink link:calculationLink link:definitionLink 9955545 - Disclosure - Derivative and Hedging Activities - Schedule of Activity Related To Our Cash Flow Hedges (Details) link:presentationLink link:calculationLink link:definitionLink 9955546 - Disclosure - Income Taxes (Details) link:presentationLink link:calculationLink link:definitionLink