0000001 - Document - Cover Page link:presentationLink link:calculationLink link:definitionLink 0000002 - Document - Audit Information link:presentationLink link:calculationLink link:definitionLink 9952151 - Statement - CONSOLIDATED BALANCE SHEETS link:presentationLink link:calculationLink link:definitionLink 9952152 - Statement - CONSOLIDATED BALANCE SHEETS (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 9952153 - Statement - CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) link:presentationLink link:calculationLink link:definitionLink 9952154 - Statement - CONSOLIDATED STATEMENTS OF SHAREHOLDERS’ EQUITY link:presentationLink link:calculationLink link:definitionLink 9952155 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS link:presentationLink link:calculationLink link:definitionLink 9952156 - Disclosure - Organization link:presentationLink link:calculationLink link:definitionLink 9952157 - Disclosure - Summary of Significant Accounting Policies link:presentationLink link:calculationLink link:definitionLink 9952158 - Disclosure - Real Estate Investments link:presentationLink link:calculationLink link:definitionLink 9952159 - Disclosure - Leases link:presentationLink link:calculationLink link:definitionLink 9952160 - Disclosure - Indebtedness link:presentationLink link:calculationLink link:definitionLink 9952161 - Disclosure - Fair Value of Assets and Liabilities link:presentationLink link:calculationLink link:definitionLink 9952162 - Disclosure - Shareholders' Equity link:presentationLink link:calculationLink link:definitionLink 9952163 - Disclosure - Per Common Share Amounts link:presentationLink link:calculationLink link:definitionLink 9952164 - Disclosure - Business and Property Management Agreements with RMR link:presentationLink link:calculationLink link:definitionLink 9952165 - Disclosure - Related Person Transactions link:presentationLink link:calculationLink link:definitionLink 9952166 - Disclosure - Derivatives and Hedging Activities link:presentationLink link:calculationLink link:definitionLink 9952167 - Disclosure - Segment Reporting link:presentationLink link:calculationLink link:definitionLink 9952168 - Disclosure - SCHEDULE III - REAL ESTATE AND ACCUMULATED DEPRECIATION link:presentationLink link:calculationLink link:definitionLink 9955511 - Disclosure - Summary of Significant Accounting Policies (Policies) link:presentationLink link:calculationLink link:definitionLink 9955512 - Disclosure - Summary of Significant Accounting Policies (Tables) link:presentationLink link:calculationLink link:definitionLink 9955513 - Disclosure - Real Estate Investments (Tables) link:presentationLink link:calculationLink link:definitionLink 9955514 - Disclosure - Leases (Tables) link:presentationLink link:calculationLink link:definitionLink 9955515 - Disclosure - Indebtedness (Tables) link:presentationLink link:calculationLink link:definitionLink 9955516 - Disclosure - Fair Value of Assets and Liabilities (Tables) link:presentationLink link:calculationLink link:definitionLink 9955517 - Disclosure - Shareholders' Equity (Tables) link:presentationLink link:calculationLink link:definitionLink 9955518 - Disclosure - Per Common Share Amounts (Tables) link:presentationLink link:calculationLink link:definitionLink 9955519 - Disclosure - Business and Property Management Agreements with RMR (Tables) link:presentationLink link:calculationLink link:definitionLink 9955520 - Disclosure - Derivatives and Hedging Activities (Tables) link:presentationLink link:calculationLink link:definitionLink 9955521 - Disclosure - Organization (Details) link:presentationLink link:calculationLink link:definitionLink 9955522 - Disclosure - Summary of Significant Accounting Policies - Real Estate Properties (Details) link:presentationLink link:calculationLink link:definitionLink 9955523 - Disclosure - Summary of Significant Accounting Policies - Schedule of Acquired Real Estate Leases, Net and Assumed Real Estate Lease Obligations, Net (Details) link:presentationLink link:calculationLink link:definitionLink 9955524 - Disclosure - Summary of Significant Accounting Policies - Schedule of Expected Future Amortization Related to Acquired Real Estate Leases, Net and Assumed Real Estate Obligations, Net, Deferred Leasing Costs, Net and Debt Issuance Costs, Net (Details) link:presentationLink link:calculationLink link:definitionLink 9955525 - Disclosure - Summary of Significant Accounting Policies - Deferred Leasing Costs (Details) link:presentationLink link:calculationLink link:definitionLink 9955526 - Disclosure - Summary of Significant Accounting Policies - Debt Issuance Costs and Other Narrative Items (Details) link:presentationLink link:calculationLink link:definitionLink 9955527 - Disclosure - Summary of Significant Accounting Policies - Right of Use Asset and Lease Liability (Details) link:presentationLink link:calculationLink link:definitionLink 9955528 - Disclosure - Real Estate Investments - Schedule of Capitalized Lessor Expenses (Details) link:presentationLink link:calculationLink link:definitionLink 9955529 - Disclosure - Real Estate Investments - Schedule of Property Dispositions (Details) link:presentationLink link:calculationLink link:definitionLink 9955530 - Disclosure - Real Estate Investments - Schedule of Recognized Net Loss (Income) Attributable to Noncontrolling Interest (Details) link:presentationLink link:calculationLink link:definitionLink 9955531 - Disclosure - Real Estate Investments - Joint Venture Activities - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955532 - Disclosure - Leases - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955533 - Disclosure - Leases - Schedule of Future Contractual Lease Payments Due from our Tenants (Details) link:presentationLink link:calculationLink link:definitionLink 9955534 - Disclosure - Indebtedness - Schedule of Outstanding Indebtedness (Details) link:presentationLink link:calculationLink link:definitionLink 9955535 - Disclosure - Indebtedness - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955536 - Disclosure - Indebtedness - Weighted Average Interest Rate Under Floating Rate Loans (Details) link:presentationLink link:calculationLink link:definitionLink 9955537 - Disclosure - Indebtedness - Schedule of Future Indebtedness Maturity (Details) link:presentationLink link:calculationLink link:definitionLink 9955538 - Disclosure - Fair Value of Assets and Liabilities - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955539 - Disclosure - Fair Value of Assets and Liabilities - Schedule of Assets Measured on Recurring Basis (Details) link:presentationLink link:calculationLink link:definitionLink 9955540 - Disclosure - Fair Value of Assets and Liabilities - Schedule of Fair Value Measurements Significant Unobservable Inputs Related to Certain Level 3 (Details) link:presentationLink link:calculationLink link:definitionLink 9955541 - Disclosure - Fair Value of Assets and Liabilities - Schedule of Changes In Fair Value For Our Investment In Unconsolidated Joint Venture (Details) link:presentationLink link:calculationLink link:definitionLink 9955542 - Disclosure - Shareholders' Equity - Share Awards (Details) link:presentationLink link:calculationLink link:definitionLink 9955543 - Disclosure - Shareholders' Equity - Schedule of Shares Awarded, Vested and Forfeited (Details) link:presentationLink link:calculationLink link:definitionLink 9955544 - Disclosure - Shareholders' Equity - Common Share Purchases (Details) link:presentationLink link:calculationLink link:definitionLink 9955545 - Disclosure - Shareholders' Equity - Schedule of Distributions Paid on Common Shares (Details) link:presentationLink link:calculationLink link:definitionLink 9955546 - Disclosure - Per Common Share Amounts (Details) link:presentationLink link:calculationLink link:definitionLink 9955547 - Disclosure - Business and Property Management Agreements with RMR - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955548 - Disclosure - Business and Property Management Agreements with RMR - Schedule of Business Management and Operating Expenses (Details) link:presentationLink link:calculationLink link:definitionLink 9955549 - Disclosure - Related Person Transactions (Details) link:presentationLink link:calculationLink link:definitionLink 9955550 - Disclosure - Derivatives and Hedging Activities - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955551 - Disclosure - Derivatives and Hedging Activities - Schedule of Interest Rate Cap Agreements (Details) link:presentationLink link:calculationLink link:definitionLink 9955552 - Disclosure - Derivatives and Hedging Activities - Schedule of Activity (Details) link:presentationLink link:calculationLink link:definitionLink 9955553 - Disclosure - Segment Reporting (Details) link:presentationLink link:calculationLink link:definitionLink 9955554 - Disclosure - SCHEDULE III - REAL ESTATE AND ACCUMULATED DEPRECIATION - Real Estate Properties (Details) link:presentationLink link:calculationLink link:definitionLink 9955555 - Disclosure - SCHEDULE III - REAL ESTATE AND ACCUMULATED DEPRECIATION - Analysis of Carrying Amount And Accumulated Depreciation (Details) link:presentationLink link:calculationLink link:definitionLink