Statistical Measurement [Domain] Statistical Measurement [Domain] Award Timing Predetermined Award Timing Predetermined [Flag] Related Party Transaction [Axis] Related Party Transaction [Axis] Entity File Number Entity File Number Sonesta Management Agreement, Period One Sonesta Management Agreement, Period One [Member] Sonesta Management Agreement, Period One Additional Paid In Capital Additional Paid-in Capital [Member] Rents receivable Increase (Decrease) in Leasing Receivables Equity in net losses of investees Equity in net losses of investees Income (Loss) from Equity Method Investments Tabular List, Table Tabular List [Table Text Block] Leases [Abstract] Leases [Abstract] Straight line rent adjustments Straight Line Rent Adjustments Schedule of Dividends Dividends Declared [Table Text Block] Operating Activities [Axis] Operating Activities [Axis] Schedule of Related Party Transactions Schedule of Related Party Transactions [Table Text Block] Deferred leasing costs, net Deferred Costs, Leasing, Net SOFR Secured Overnight Financing Rate (SOFR) [Member] Cash percentage of commitments as an upfront fee Debt Instrument, Upfront Fee Percentage, Cash Commitment Debt Instrument, Upfront Fee Percentage, Lender Commitments Schedule of Fair Value and Carrying Value of Financial Instruments Fair Value, by Balance Sheet Grouping [Table Text Block] Schedule of Disposal Groups, Including Discontinued Operations Disposal Groups, Including Discontinued Operations [Table Text Block] Trading Arrangements, by Individual Trading Arrangements, by Individual [Table] Measurement Basis [Axis] Measurement Basis [Axis] Net (loss) income (basic) (in dollars per share) Net (loss) income per common share - basic (in dollars per share) Earnings Per Share, Basic Adjustment to Compensation: Adjustment to Compensation [Axis] Related Person Transactions Related Party Transactions Disclosure [Text Block] Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Accounts payable and other liabilities Increase (Decrease) in Accounts Payable and Accrued Liabilities Continuing operations Continuing Operations [Member] Rentable Square Feet Rentable square feet (in square feet) Area of Real Estate Property Adjustment to Compensation, Amount Adjustment to Compensation Amount Concentration risk percentage Concentration Risk, Percentage Unamortized debt premiums, discounts and issuance Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net Senior secured notes, 3.250% interest rate, due in 2027 3.250% Senior Secured Notes [Member] 3.250% Senior Secured Notes Other assets Increase (Decrease) in Other Operating Assets Santa Clara, CA Santa Clara, CA [Member] Santa Clara, CA Consolidation Consolidation, Policy [Policy Text Block] Employee Stock Option Share-Based Payment Arrangement, Option [Member] Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] Income taxes paid Income Taxes Paid Plan equity value discount percentage Long-Term Debt, Reorganized Common Stock, Percent Discount On Plan Equity Value Long-Term Debt, Equity Rights Offering And Reorganized Common Stock Proceeds, Percent Discount On Chapter 11 Plan Equity Value Tenant reimbursements and other income Tenant Reimbursement Income Tenant Reimbursement Income Distributions to common shareholders Dividends, Common Stock, Cash Total shareholders’ equity Beginning balance Ending balance Equity, Attributable to Parent Insider Trading Policies and Procedures [Line Items] Common shares of beneficial interest, shares authorized (in shares) Common Stock, Shares Authorized Senior unsecured notes, 6.375% interest rate, due in 2050 6.375% Senior Unsecured Notes [Member] 6.375% Senior Unsecured Notes Real estate improvements Payments to Develop Real Estate Assets Secured debt, net Mortgage notes payable Secured Debt Issuance of common shares, net (in shares) Stock Issued During Period, Shares, New Issues Number of employees Number Of Employees Represents the number of employees in the company. Total liabilities and shareholders’ equity Liabilities and Equity Existing notes exchanged, interest rate Debt Conversion, Original Debt, Interest Rate of Debt Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Axis] LIABILITIES AND SHAREHOLDERS’ EQUITY Liabilities and Equity [Abstract] Due to related persons Accounts Payable, Other Cover [Abstract] Cover [Abstract] Portion at Fair Value Measurement Portion at Fair Value Measurement [Member] Joint Venture Joint Venture Property 1 [Member] Joint Venture Property 1 [Member] Maximum Maximum [Member] Real estate properties: Real Estate Investment Property, Net [Abstract] Acquired real estate leases, net Finite-Lived Intangible Assets, Net Senior secured notes, 9.000% interest rate, due in March 2029 9.000% Senior Secured Notes, Due In March 2029 [Member] 9.000% Senior Secured Notes, Due In March 2029 Concentration Risk Type [Domain] Concentration Risk Type [Domain] Repayment of senior secured notes Repayment of senior secured notes Repayments of Secured Debt Gain on early extinguishment of debt per common share (in dollars per share) Extinguishment of Debt, Gain (Loss), Per Share, Net of Tax Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Debt Instrument [Line Items] Debt Instrument [Line Items] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Concentration Concentration Risk Disclosure [Text Block] Adjustment to Non-PEO NEO Compensation Footnote Adjustment to Non-PEO NEO Compensation Footnote [Text Block] Pay vs Performance Disclosure [Line Items] Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Expenditures committed on leases Operating Leases Committed Expenditures on Leases Executed in Period Represents committed expenditures for operating leases executed during the period. Non-Rule 10b5-1 Arrangement Terminated Non-Rule 10b5-1 Arrangement Terminated [Flag] Depreciation and amortization Depreciation, Depletion and Amortization, Nonproduction Property management agreement Property Management Agreement [Member] Property Management Agreement Secured Exit Notes 10.000% Senior Secured Notes Payable, Due 2031 [Member] 10.000% Senior Secured Notes Payable, Due 2031 Real Estate Properties Real Estate, Policy [Policy Text Block] Entity Shell Company Entity Shell Company Cash commission percentage Sale Of Stock, Cash Commission Percentage Sale Of Stock, Cash Commission Percentage Schedule of Long-term Debt Instruments [Table] Schedule of Long-Term Debt Instruments [Table] Distribution rate (in dollars per share) Debt Instrument, Covenant, Distribution Rate, Maximum Debt Instrument, Covenant, Distribution Rate, Maximum The amount of investment in exceed the underlying equity of the investee Equity Method Investment, Difference Between Carrying Amount and Underlying Equity Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Company Selected Measure Amount Company Selected Measure Amount Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Loyalty fee, percent of qualified room revenues Related Party Transaction, Loyalty Fee, Percent Of Qualified Room Revenues Related Party Transaction, Loyalty Fee, Percent Of Qualified Room Revenues Debt Conversion, Name [Domain] Debt Conversion, Name [Domain] Name Measure Name Borrowings on secured term loan Proceeds From Issuance Of Secured Term Loan Proceeds From Issuance Of Secured Term Loan Texas TEXAS Secured Debt Secured Debt [Member] Document Fiscal Period Focus Document Fiscal Period Focus Real estate taxes Real Estate Tax Expense Unsecured Debt Unsecured Debt [Member] Award Timing Method Award Timing Method [Text Block] Award Type Award Type [Axis] Deferred leasing costs Increase (Decrease) in Deferred Leasing Fees Total assets Assets Investment, Name [Domain] Investment, Name [Domain] Virginia VIRGINIA Real Estate [Table] Real Estate [Table] Geographical [Domain] Geographical [Domain] Entity Address, City or Town Entity Address, City or Town Weighted average annual interest rate Weighted Average Annual Interest Rate Weighted Average Annual Interest Rate CASH FLOWS FROM OPERATING ACTIVITIES: Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract] Required escrow deposit Related Party Transaction, Required Escrow Deposit Related Party Transaction, Required Escrow Deposit Concentration Risk Type [Axis] Concentration Risk Type [Axis] Total real estate properties, gross Real estate aggregate undepreciated carrying value Real Estate Investment Property, at Cost Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount Cash receivable for other general unsecured claims Other General Unsecured Claims, Receivable Other General Unsecured Claims, Receivable Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Entity Emerging Growth Company Entity Emerging Growth Company RMR LLC Reit Management And Research L L C [Member] Represents details pertaining to Reit Management and Research LLC, or RMR. Distributions Per Common Share (in dollars per share) Common Stock, Dividends, Per Share, Declared Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year [Member] Restricted cash Restricted Cash and Cash Equivalent Carrying Value of Investments Equity Method Investments Insider Trading Policies and Procedures Not Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] Related Party Related Party [Member] Amount available to be drawn under credit agreement Debt Instrument, Amount Available To Be Drawn Debt Instrument, Amount Available To Be Drawn Debt Conversion Description [Axis] Debt Conversion Description [Axis] Common shares of beneficial interest, shares outstanding (in shares) Common Stock, Shares, Outstanding Management Agreement Priority Return Management Agreement Priority Return [Member] Management Agreement Priority Return PEO PEO [Member] (Loss) income before income tax benefit (expense) and equity in net losses of investees Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest Proceeds from issuance of senior secured notes Proceeds from Issuance of Senior Long-Term Debt Annual fee period Related Party Transaction, Annual Fee Period Related Party Transaction, Annual Fee Period Change in assets and liabilities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Increase (Decrease) in Operating Capital [Abstract] Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year [Member] 9.000% Senior Secured Notes Payable, Due In March 2029 9.000% Senior Secured Notes Payable, Due In March 2029 [Member] 9.000% Senior Secured Notes Payable, Due In March 2029 Utility expenses Utilities Operating Expense Cumulative Net Income (Loss) Retained Earnings [Member] Loyalty fee, percent of room revenues Related Party Transaction, Loyalty Fee, Percent Of Room Revenues Related Party Transaction, Loyalty Fee, Percent Of Room Revenues Percentage of outstanding voting shares of reorganized company following emergency from bankruptcy to qualify as fresh-start reporting Maximum Threshold Percentage Of Outstanding Voting Shares After Bankruptcy Triggering Fresh-Start Reporting Maximum Threshold Percentage Of Outstanding Voting Shares After Bankruptcy Triggering Fresh-Start Reporting Entity Address, Postal Zip Code Entity Address, Postal Zip Code Restatement Determination Date Restatement Determination Date Cash, cash equivalents and restricted cash at beginning of period Cash, cash equivalents and restricted cash at end of period Total cash, cash equivalents and restricted cash shown in the condensed consolidated statements of cash flows Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Income Statement [Abstract] Income Statement [Abstract] Income tax benefit (expense) Income Tax Expense (Benefit) Aggregate amount of equity rights offering Long-Term Debt, Equity Rights Offering, Amount Long-Term Debt, Equity Rights Offering, Amount Interest rate premium (as a percent) Debt Instrument, Basis Spread on Variable Rate Sale of Stock [Domain] Sale of Stock [Domain] Other assets, net Other Assets Recognized amortization of the liability Related Party Transaction Amortization Of Liability Represents the amount of amortization of the liability recorded during the period. Unsecured debt, net Unsecured Debt Pension Adjustments Service Cost Pension Adjustments Service Cost [Member] Tenant concentration Customer Concentration Risk [Member] Existing 3.450% 2031 Notes Senior unsecured notes, 3.450% interest rate, due in 2031 3.450% Senior Unsecured Notes [Member] 3.450% Senior Unsecured Notes Prime Rate Prime Rate [Member] Restatement does not require Recovery Restatement Does Not Require Recovery [Text Block] Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Annual base rent increase period Lessor, Operating Lease, Lease Not Yet Commenced, Annual Base Rent Increase Period Lessor, Operating Lease, Lease Not Yet Commenced, Annual Base Rent Increase Period Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] City Area Code City Area Code Award Timing, How MNPI Considered Award Timing, How MNPI Considered [Text Block] All Trading Arrangements All Trading Arrangements [Member] Equity Awards Adjustments, Footnote Equity Awards Adjustments, Footnote [Text Block] Total Shareholder Return Vs Peer Group Total Shareholder Return Vs Peer Group [Text Block] Mortgage notes payable Mortgages [Member] NON-CASH INVESTING ACTIVITIES: Noncash Investing Items [Abstract] Noncash Investing Items Annual base rent Lessor, Operating Lease, Lease Not yet Commenced, Annual Base Rent Lessor, Operating Lease, Lease Not yet Commenced, Annual Base Rent Borrowings on revolving credit facility Proceeds from Long-Term Lines of Credit CASH FLOWS FROM INVESTING ACTIVITIES: Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract] General and administrative General and Administrative Expense Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Net cash (used in) provided by operating activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Aggregate gross book value of secured properties Aggregate Gross Book Value Of Real Estate Assets Collateralized Represents the aggregate gross book value of real estate assets serving as a collateral for debt, as of the balance sheet date. Disposal Group, Disposed of by Sale, Not Discontinued Operations Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] Incentive fee Incentive Fee Expense Related Party Transactions [Abstract] Related Party Transactions [Abstract] Subsequent Event Subsequent Event [Member] Real Estate [Line Items] Real Estate [Line Items] Accounts payable and other liabilities Other Liabilities Equity Valuation Assumption Difference, Footnote Equity Valuation Assumption Difference, Footnote [Text Block] PEO Total Compensation Amount PEO Total Compensation Amount Long-term Debt, Type [Axis] Long-Term Debt, Type [Axis] Depreciation Depreciation Denominators: Weighted Average Number of Shares Outstanding, Basic [Abstract] Write off of unamortized discounts, premiums and issuance costs associated with debt considered LSTC Liabilities Subject to Compromise, Debt and Accrued Interest Senior Notes Exchange Senior Notes Exchange [Member] Senior Notes Exchange NON-CASH FINANCING ACTIVITIES: Noncash Financing Items [Abstract] Noncash Financing Items Equity Components [Axis] Equity Components [Axis] Real Estate Properties [Line Items] Real Estate Properties [Line Items] Property management fees Property Management Agreement, Property Management Fees [Member] Property Management Agreement, Property Management Fees Pro rata percentage of equity and warrants receivable Long-Term Debt, Reorganized Common Stock And Warrants, Pro Rata Percentage Receivable Long-Term Debt, Reorganized Common Stock And Warrants, Pro Rata Percentage Receivable Non-Rule 10b5-1 Arrangement Adopted Non-Rule 10b5-1 Arrangement Adopted [Flag] Concentration Risk [Table] Concentration Risk [Table] Bankruptcy Accounting Bankruptcy, Policy [Policy Text Block] Bankruptcy, Policy Other reimbursed expenses Expense Reimbursement, Other Reimbursed Expenses [Member] Expense Reimbursement, Other Reimbursed Expenses Number of reportable segments Number of Reportable Segments Expense Reimbursement Expense Reimbursement [Member] Expense Reimbursement Interest and other income Interest and Other Income SUPPLEMENTAL CASH FLOW INFORMATION: Supplemental Cash Flow Information [Abstract] Other Performance Measure, Amount Other Performance Measure, Amount Priority return percentage of prior year's annual owner's priority return Related Party Transaction, Maximum Priority Return Of Prior Year Priority Return Related Party Transaction, Maximum Priority Return Of Prior Year Priority Return Payment of debt issuance costs Payments of Debt Issuance Costs Entity Address, State or Province Entity Address, State or Province Total Distributions Dividends, Common Stock Related Party [Domain] Related and Nonrelated Parties [Domain] Individual: Individual [Axis] U.S. Government U S Government [Member] Represents information pertaining to the government of United States of America. Restricted cash Restricted Cash Distributions to common shareholders Payments of Ordinary Dividends, Common Stock Cumulative common distributions Cumulative Dividends Additional paid in capital Additional Paid in Capital, Common Stock Net cash used in investing activities Cash Provided by (Used in) Investing Activity, Including Discontinued Operation Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table [Member] Cumulative Common Distributions Cumulative Common Distributions [Member] Represents cumulative distributions to common shareholders. Interest paid Interest Paid, Excluding Capitalized Interest, Operating Activity Document Fiscal Year Focus Document Fiscal Year Focus Parsippany, NJ Parsippany, NJ [Member] Parsippany, NJ Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Entity Interactive Data Current Entity Interactive Data Current Carrying Value Reported Value Measurement [Member] Transaction related costs Business Combination, Acquisition-Related Cost, Expense Real Estate [Abstract] Real Estate [Abstract] Sonesta Management Agreement, Period Three Sonesta Management Agreement, Period Three [Member] Sonesta Management Agreement, Period Three Equity [Abstract] Equity [Abstract] Senior notes Senior Notes Tranche B Tranche B [Member] Tranche B Segment Reporting Segment Reporting Disclosure [Text Block] Repayments of principal debt Debt Instrument, Periodic Payment, Principal A&R DIP Credit Agreement 12.000% Debtor-In-Possession Term Loan [Member] 12.000% Debtor-In-Possession Term Loan Renewal term Related Party Transaction, Renewal Term Related Party Transaction, Renewal Term Increase (Decrease) in Shareholders' Equity Increase (Decrease) in Stockholders' Equity [Roll Forward] Business management agreement Business Management Agreement [Member] Business Management Agreement Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Total Shareholder Return [Text Block] Amortization of acquired real estate leases and assumed real estate lease obligations, net Amortization of Intangible Assets Extinguishment of unsecured senior notes in exchange for senior secured notes and common shares Extinguishment Of Debt In Exchange For Senior Notes And Common Shares Extinguishment Of Debt In Exchange For Senior Notes And Common Shares Percentage of reorganized common equity payable under agreement Related Party Transaction, Percentage Of Reorganized Common Equity Payable Related Party Transaction, Percentage Of Reorganized Common Equity Payable Customer [Domain] Customer [Domain] Reorganized common equity percentage of commitments as an upfront fee Debt Instrument, Upfront Fee Percentage, Reorganized Common Equity Commitment Debt Instrument, Upfront Fee, Reorganized Common Equity Commitment Percentage Entity Central Index Key Entity Central Index Key PEO Name PEO Name Rental income Revenues Proceeds from sale of stock Sale of Stock, Consideration Received on Transaction Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year [Member] Fair Value of Financial Instruments Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount Revolving Credit Facility Revolving Credit Facility [Member] Gross sales price Gross Sales Price Real Estate Aggregate Sales Price This element represents the aggregate sales price excluding closing costs, of real estate properties sold by the entity. Arrangement Duration Trading Arrangement Duration Disposal Group, Held-for-Sale or Disposed of by Sale, Not Discontinued Operations Disposal Group, Held-for-Sale or Disposed of by Sale, Not Discontinued Operations [Member] Exercise Price Award Exercise Price Entity Filer Category Entity Filer Category Local Phone Number Local Phone Number Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Subsequent Event Type [Axis] Subsequent Event Type [Axis] Common share forfeitures and repurchases (in shares) Stock Repurchased and Retired During Period, Shares Assumed real estate lease obligations, net Off-Market Lease, Unfavorable ASSETS Assets [Abstract] Credit Facility [Axis] Credit Facility [Axis] Underlying Security Market Price Change Underlying Security Market Price Change, Percent Entity Address, Address Line Three Entity Address, Address Line Three Debt Instrument [Axis] Debt Instrument [Axis] Fair Value of Assets and Liabilities Fair Value Disclosures [Text Block] Net gain on early extinguishment of debt Gain (loss) on early extinguishment of debt Gain (Loss) on Extinguishment of Debt Credit Facility [Domain] Credit Facility [Domain] Shareholders’ equity: Equity, Attributable to Parent [Abstract] Buildings and improvements Investment Building and Building Improvements Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year [Member] Priority return increase percentage of out-of-pocket capital expenditures Related Party Transaction, Priority Return Increase, Percent Of Capital Expenditures Related Party Transaction, Priority Return Increase, Percent Of Capital Expenditures Entity Address, Address Line One Entity Address, Address Line One Entity Address, Address Line Two Entity Address, Address Line Two SUPPLEMENTAL DISCLOSURE OF CASH, CASH EQUIVALENTS AND RESTRICTED CASH: Supplemental Disclosure Of Cash, Cash Equivalents And Restricted Cash [Abstract] Supplemental Disclosure Of Cash, Cash Equivalents And Restricted Cash [Abstract] Investment, Name [Axis] Investment, Name [Axis] Interest rate (as a percent) Debt Instrument, Interest Rate, Stated Percentage Rentable square feet (in square feet) Operating Leases Committed Expenditures on Leases Executed in Period Area of Leased Property Represents the area of leased property related to operating leases executed during the period. Real Estate Properties [Domain] Real Estate Properties [Domain] Number of Properties, under agreement to sell Number Of Real Estate Properties, Under Agreement To Sell Number Of Real Estate Properties, Under Agreement To Sell Land Land Fair Value as of Grant Date Award Grant Date Fair Value Rents receivable Accounts Receivable, after Allowance for Credit Loss Entity Registrant Name Entity Registrant Name Sonesta Sonesta International Hotels Corporation [Member] Sonesta International Hotels Corporation Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] Disposal Group, Held-for-sale, Not Discontinued Operations Disposal Group, Held-for-Sale, Not Discontinued Operations [Member] Annualized Rental Income, Excluding Properties Classified as Discontinued Operations Real Estate Revenue Net [Member] The revenue from real estate operations during the reporting period in the normal course of business, after deducting returns, allowances and discounts, when it serves as a benchmark in a concentration of risk calculation. Total expenses Costs and Expenses Incentive fee, percent of net operating profit Related Party Transaction, Incentive Fee, Percent Of Net Operating Profit Related Party Transaction, Incentive Fee, Percent Of Net Operating Profit Related Party Transaction [Line Items] Related Party Transaction [Line Items] Document Quarterly Report Document Quarterly Report Number of agreements Number Of Agreements With RMR LLC Represents the number of agreements with RMR LLC to provide management services to the company. Total Long-Term Debt, Fair Value Changed Peer Group, Footnote Changed Peer Group, Footnote [Text Block] Counterparty Name [Domain] Counterparty Name [Domain] Detroit, MI Detroit, MI [Member] Detroit, MI Adjustment To PEO Compensation, Footnote Adjustment To PEO Compensation, Footnote [Text Block] Real Estate Property Ownership [Axis] Real Estate Property Ownership [Axis] Related Party [Axis] Related and Nonrelated Parties [Axis] Title Trading Arrangement, Individual Title Peer Group Total Shareholder Return Amount Peer Group Total Shareholder Return Amount Existing 2.650% 2026 Notes Senior unsecured notes, 2.650% interest rate, due in 2026 2.650% Senior Unsecured Notes [Member] 2.650% Senior Unsecured Notes Brand promotion fee, percent of gross revenues Related Party Transaction, Brand Promotion Fee, Percent Of Gross Revenues Related Party Transaction, Brand Promotion Fee, Percent Of Gross Revenues Repayments on revolving credit facility Repayments of Long-Term Lines of Credit Restatement Determination Date: Restatement Determination Date [Axis] Non-PEO NEO Non-PEO NEO [Member] Extinguishment of unsecured senior notes in exchange for senior priority guaranteed unsecured notes Extinguishment Of Debt In Exchange For Senior Priority Guaranteed Notes Extinguishment Of Debt In Exchange For Senior Priority Guaranteed Notes Sale of Stock [Axis] Sale of Stock [Axis] Name Trading Arrangement, Individual Name All Award Types Award Type [Domain] Equity Awards Adjustments Equity Awards Adjustments [Member] Other non-cash expenses, net Other Noncash Income (Expense) Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block] Annual fee under agreement Related Party Transaction, Annual Fee Related Party Transaction, Annual Fee Compensation Amount Outstanding Recovery Compensation Amount Aggregate principal amount Principal balance Debt Instrument, Face Amount Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Real Estate Properties Real Estate Disclosure [Text Block] Straight line rental income Straight Line Rent Sonesta Management Agreement, Period Two Sonesta Management Agreement, Period Two [Member] Sonesta Management Agreement, Period Two Recovery of Erroneously Awarded Compensation Disclosure [Line Items] Fair Value Estimate of Fair Value Measurement [Member] Variable lease, income Variable Lease, Income MNPI Disclosure Timed for Compensation Value MNPI Disclosure Timed for Compensation Value [Flag] Name Awards Close in Time to MNPI Disclosures, Individual Name 8.375% Senior Secured Notes 8.375% Senior Secured Notes [Member] 8.375% Senior Secured Notes Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] Schedule of Senior Note Exchanges Schedule of Debt Conversions [Table Text Block] Other general unsecured claims Other General Unsecured Claims, Amount Other General Unsecured Claims, Amount Aggregate Pension Adjustments Service Cost Aggregate Pension Adjustments Service Cost [Member] Number of properties used to secured mortgage note Number Of Properties Collateralized The number of properties serving as collateral for debt as of the balance sheet date. Reimbursement amounts Related Party Reimbursement Expense Total expense amount to reimburse a related party. Unconsolidated Joint Ventures Unconsolidated Properties [Member] Net amortization of debt premiums, discounts and issuance costs Amortization of Debt Issuance Costs and Discounts Minimum Minimum [Member] Per Common Share Amounts Earnings Per Share, Policy [Policy Text Block] Amortization of deferred leasing costs Amortization of Other Deferred Charges Investment in unconsolidated joint venture Real Estate Investments, Joint Ventures Company Selected Measure Name Company Selected Measure Name Management, Brand Promotion and Loyalty Fees Management, Brand Promotion And Loyalty Fees [Member] Management, Brand Promotion And Loyalty Fees Fair Value Measurement [Domain] Fair Value Measurement [Domain] Senior Notes Senior Notes [Member] Indebtedness Debt Disclosure [Text Block] Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Stock Appreciation Rights (SARs) Stock Appreciation Rights (SARs) [Member] All Executive Categories All Executive Categories [Member] Common shares of beneficial interest, $.01 par value: 250,000,000 shares authorized, 73,943,439 and 69,824,743 shares issued and outstanding, respectively Common Stock, Value, Issued Operating Activities [Domain] Operating Activities [Domain] Weighted average common shares outstanding (diluted) (in shares) Weighted average common shares outstanding - diluted (in shares) Weighted Average Number of Shares Outstanding, Diluted Percentage of claims receivable Long-Term Debt, Reorganized Common Stock, Percentage Of Claims Receivable Long-Term Debt, Reorganized Common Stock, Percentage Of Claims Receivable Commitments and contingencies Commitments and Contingencies Non-GAAP Measure Description Non-GAAP Measure Description [Text Block] Senior Notes And Mortgages Senior Notes And Mortgages [Member] Senior Notes And Mortgages [Member] Entity Small Business Entity Small Business Other operating expenses Other Cost and Expense, Operating Document Transition Report Document Transition Report Ownership interest OPI Ownership Equity Method Investment, Ownership Percentage Numerators: Net Income (Loss) Available to Common Stockholders, Basic [Abstract] Underlying Securities Award Underlying Securities Amount Concentration Concentration Risk [Line Items] Equity Component [Domain] Equity Component [Domain] Document Period End Date Document Period End Date PEO Actually Paid Compensation Amount PEO Actually Paid Compensation Amount Awards Close in Time to MNPI Disclosures, Table Awards Close in Time to MNPI Disclosures [Table Text Block] Senior secured notes, 9.000% interest rate, due in September 2029 9.000% Senior Secured Notes, Due In September 2029 [Member] 9.000% Senior Secured Notes, Due In September 2029 Number of states in which acquired properties located Number Of States In Which Real Estate Properties Held The number of states in which real estate owned by the entity is located as of the balance sheet date. Number of renewal options Related Party Transaction, Number Of Renewal Options Related Party Transaction, Number Of Renewal Options Risks and Uncertainties [Abstract] Risks and Uncertainties [Abstract] Document Type Document Type Per Common Share Amounts Earnings Per Share [Text Block] Name Outstanding Recovery, Individual Name Property level expenses Expense Reimbursement, Property Level Expenses [Member] Expense Reimbursement, Property Level Expenses California CALIFORNIA Proceeds from issuance of common shares, net Proceeds from Issuance of Common Stock All Individuals All Individuals [Member] Long-term Debt, Type [Domain] Long-Term Debt, Type [Domain] Fair Value Disclosures [Abstract] Fair Value Disclosures [Abstract] Name Forgone Recovery, Individual Name Statistical Measurement [Axis] Statistical Measurement [Axis] Capitalized interest Interest Paid, Capitalized, Investing Activity Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested [Member] 9.000% Senior Secured Notes Payable, Due In September 2029 9.000% Senior Secured Notes Payable, Due In September 2029 [Member] 9.000% Senior Secured Notes Payable, Due In September 2029 Disposal Group Classification [Axis] Disposal Group Classification [Axis] Proceeds from debtor-in-possession secured term loan Proceeds From Issuance Of Debtor-In-Possession Secured Term Loan Proceeds From Issuance Of Debtor-In-Possession Secured Term Loan Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Peer Group Issuers, Footnote Peer Group Issuers, Footnote [Text Block] Construction supervision fees Property Management Agreement, Construction Supervision Fees [Member] Property Management Agreement, Construction Supervision Fees Net (loss) income used in calculating earnings per common share Net Income (Loss) Available to Common Stockholders, Basic Gain (loss) on sale of real estate Loss (gain) on sale of real estate Gain (Loss) on Sale of Real Estate Gain (Loss) on Sale of Properties Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Geographical [Axis] Geographical [Axis] Liabilities of properties held for sale Liabilities Held For Sale Property Amount classified as liabilities attributable to property that is held for sale apart from normal operations and anticipated to be sold in less than one year. Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Unsecured revolving credit facility Long-Term Line of Credit Beginning balance (in shares) Ending balance (in shares) Shares, Outstanding Leases Lessor, Operating Leases [Text Block] Schedule of Related Party Transactions, by Related Party [Table] Related Party Transaction [Table] Net (loss) income (diluted) (in dollars per share) Net (loss) income per common share - diluted (in dollars per share) Earnings Per Share, Diluted Income attributable to unvested participating securities Participating Securities, Distributed and Undistributed Earnings (Loss), Basic Erroneously Awarded Compensation Recovery Erroneously Awarded Compensation Recovery [Table] Required escrow deposit, percent of gross revenues Related Party Transaction, Required Escrow Deposit, Percent Of Gross Revenues Related Party Transaction, Required Escrow Deposit, Percent Of Gross Revenues Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Domain] Number of shares sold (in shares) Sale of Stock, Number of Shares Issued in Transaction Per common share amounts (basic and diluted): Earnings Per Share [Abstract] ATM Offering ATM Offering [Member] ATM Offering Number of agreements Number Of Agreements Represents the number of agreements with RMR LLC to provide management services to the company. Existing 2.400% 2027 Notes Senior unsecured notes, 2.400% interest rate, due in 2027 2.400% Senior Unsecured Notes [Member] 2.400% Senior Unsecured Notes Common share forfeitures and repurchases Stock Repurchased and Retired During Period, Value Annual percentage increase Lessor, Operating Lease, Lease Not Yet Commenced, Annual Percentage Increase Lessor, Operating Lease, Lease Not Yet Commenced, Annual Percentage Increase Prosperity Metro Plaza Prosperity Metro Plaza [Member] Prosperity Metro Plaza [Member] Cash Prepayment premium as a percentage for voluntary prepayment Debt Instrument, Voluntary Prepayment Fee Percentage Debt Instrument, Voluntary Prepayment Fee Percentage Schedule of Joint Ventures Schedule Of Joint Ventures [Table Text Block] Schedule Of Joint Ventures [Table Text Block] Management Agreement Realized Return Management Agreement Realized Return [Member] Management Agreement Realized Return Award Timing Disclosures [Line Items] Outstanding principal amount Long-Term Debt, Gross Agreement term Related Party Transaction, Term Of Agreement Related Party Transaction, Term Of Agreement Assets of properties held for sale Asset, Held-for-Sale, Not Part of Disposal Group Senior unsecured notes, 4.500% interest rate, due in 2025 4.500% Senior Unsecured Notes [Member] 4.500% Senior Unsecured Notes Shareholders' Equity Equity [Text Block] Number of joint ventures Number Of Joint Ventures Number Of Joint Ventures Illinois ILLINOIS Net (loss) income Net (loss) income Net Income (Loss) Attributable to Parent Expiration Date Trading Arrangement Expiration Date Total real estate properties, net Real Estate Investment Property, Net Stock repurchase price (in dollars per share) Stock Repurchased During Period, Price Per Share Stock Repurchased During Period, Price Per Share Base management fee, percent of gross revenues Related Party Transaction, Base Manage Fee, Percent Of Gross Revenues Related Party Transaction, Base Manage Fee, Percent Of Gross Revenues Related party transaction amount Related Party Transaction, Amounts of Transaction Georgia GEORGIA Exit fee percentage Debt Instrument, Exit Fee Percentage Debt Instrument, Exit Fee Percentage Capital commitment fee as a percentage of lenders' commitments Debt Instrument, Capital Commitment Fee Percentage Debt Instrument, Capital Commitment Fee Percentage Geographic Concentration Risk Geographic Concentration Risk [Member] Repurchases of common shares Payments for Repurchase of Common Stock Adoption Date Trading Arrangement Adoption Date Compensation Actually Paid vs. Net Income Compensation Actually Paid vs. Net Income [Text Block] Entity Current Reporting Status Entity Current Reporting Status Number of borrowers that have entered waiver agreements Number Of Borrowers With Waiver Agreements Number Of Borrowers With Waiver Agreements Customer [Axis] Customer [Axis] Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Real estate held-for-sale Real Estate, Held-for-Sale Line of Credit Line of Credit [Member] Cumulative net loss Retained Earnings (Accumulated Deficit) Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested [Member] Executive Category: Executive Category [Axis] Common share grants (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Net of Forfeitures Revenue Recognition Revenue Recognition, Leases [Policy Text Block] Working Capital Working Capital [Member] Working Capital Interest expense (including net amortization of debt premiums, discounts and issuance costs of $11,986, $2,183, $35,269 and $9,261 respectively) Interest Expense, Operating and Nonoperating Current Fiscal Year End Date Current Fiscal Year End Date Subsequent Event Type [Domain] Subsequent Event Type [Domain] Due to related persons Increase (Decrease) in Due to Related Parties Debt converted Debt conversion, converted instrument, amount Aggregate Principal Amount of New Notes Delivered Debt Conversion, Converted Instrument, Amount Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table [Member] Long-Term Debt, Terms [Domain] Long-Term Debt, Terms [Domain] Long-Term Debt, Terms [Domain] Additional area of real estate property (in square feet) Additional Area Of Real Estate Property Additional Area Of Real Estate Property Statement [Table] Statement [Table] Schedule of Real Estate Properties [Table] Real Estate Property, Ownership [Table] Adjustments to reconcile net (loss) income to net cash provided by operating activities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract] CASH FLOWS FROM FINANCING ACTIVITIES: Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract] Equity Awards Adjustments, Excluding Value Reported in Compensation Table Equity Awards Adjustments, Excluding Value Reported in the Compensation Table [Member] U S Government, State Governments, and Other Governments U S Government State Governments And Other Government [Member] Represents the U.S. Government, state governments and Other Government, combined. Variable Rate [Domain] Variable Rate [Domain] Basis of Presentation Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Percentage of equity receivable Long-Term Debt, Reorganized Common Stock, Percentage Receivable Long-Term Debt, Reorganized Common Stock, Percentage Receivable Repayment of senior unsecured notes Repayments of Unsecured Debt Weighted average lease term Operating Leases Weighted Average Lease Term Represents the weighted average lease term of operating leases. All Adjustments to Compensation All Adjustments to Compensation [Member] Fair Value, by Balance Sheet Grouping [Table] Fair Value, by Balance Sheet Grouping [Table] Amendment Flag Amendment Flag Proceeds from sale of property, net Proceeds from Sale, Real Estate, Held-for-Investment Tempe, AZ Tempe, AZ [Member] Tempe, AZ Leases Lessee, Operating Leases [Text Block] Termination Date Trading Arrangement Termination Date Weighted average share price of common shares sold (in dollars per share) Sale Of Stock, Weighted Average Price Per Share Sale Of Stock, Weighted Average Price Per Share Net cash used in financing activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Adopted [Flag] Measure: Measure [Axis] Straight line rent receivables Deferred Rent Receivables, Net Senior priority guaranteed unsecured notes, 8.000% interest rate, due in 2030 8.000% Priority Guaranteed Notes Due 2030 [Member] 8.000% Priority Guaranteed Notes Due 2030 Weighted average common shares outstanding (basic) (in shares) Weighted average common shares outstanding - basic (in shares) Weighted Average Number of Shares Outstanding, Basic Number of leases entered Number of Operating Lease Executed Represents number of leases executed during the reporting period. Disposal Group Classification [Domain] Disposal Group Classification [Domain] Schedule of Earnings Per Share, Basic and Diluted Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Related Party Transaction [Domain] Related Party Transaction [Domain] Segment Reporting [Abstract] Segment Reporting [Abstract] Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Reston, VA Reston, VA [Member] Reston, VA Debt Disclosure [Abstract] Debt Disclosure [Abstract] Forgone Recovery due to Violation of Home Country Law, Amount Forgone Recovery due to Violation of Home Country Law, Amount Entity Tax Identification Number Entity Tax Identification Number Expenses: Costs and Expenses [Abstract] Asset Management Amortization Asset Management Amortization [Member] Asset Management Amortization Number of properties Number of Properties Number of Real Estate Properties Committed but unspent tenant related obligations estimated Operating Leases Committed Expenditures on Leases Executed in Period Committed but Unspent Tenant Related Obligations Represents committed but unspent tenant related obligations based on executed operating leases as of the balance sheet date. Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Common shares of beneficial interest, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Common shares of beneficial interest, shares issued (in shares) Common Stock, Shares, Issued Loss on impairment of real estate Loss on Impairment of Real Estate Impairment of Real Estate Authorized sale price of common stock Sale Of Stock, Authorized Amount Sale Of Stock, Authorized Amount Trading Arrangement: Trading Arrangement [Axis] Total Shareholder Return Amount Total Shareholder Return Amount Net (loss) gain on early extinguishment of debt Gain (Loss) On Extinguishment Of Debt, Net Gain (Loss) On Extinguishment Of Debt, Net Insider Trading Arrangements [Line Items] Debt Conversion [Line Items] Debt Conversion [Line Items] Rental income Rental income Lease Income Total liabilities Liabilities Facility fee (as a percent) Line of Credit Facility, Commitment Fee Percentage Real estate improvements accrued, not paid Capital Expenditures Incurred but Not yet Paid Maximum borrowing capacity on revolving credit facility Line of Credit Facility, Maximum Borrowing Capacity Pension Adjustments Prior Service Cost Pension Adjustments Prior Service Cost [Member] Share repurchases (in shares) Stock Repurchased During Period, Shares Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Debt Conversion [Table] Debt Conversion [Table] Debt conversion, original debt, amount Aggregate Principal Amount of Existing Notes Accepted for Exchange Debt Conversion, Original Debt, Amount Business and Property Management Agreements with RMR Business And Property Management Agreements [Text Block] Business and Property Management Agreements [Text Block] Common share grants Shares Granted, Value, Share-Based Payment Arrangement, after Forfeiture Long-Term Debt, Terms [Axis] Long-Term Debt, Terms [Axis] Long-Term Debt, Terms Issuance of common shares, net Stock Issued During Period, Value, New Issues Statement [Line Items] Statement [Line Items] Extinguishment of debt, amount Extinguishment of Debt, Amount Variable Rate [Axis] Variable Rate [Axis] Rule 10b5-1 Arrangement Adopted Rule 10b5-1 Arrangement Adopted [Flag] Cash and cash equivalents Cash and cash equivalents Cash and Cash Equivalent Counterparty Name [Axis] Counterparty Name [Axis] Common Shares Common Stock [Member] Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Non-NEOs Non-NEOs [Member] Accumulated depreciation Real Estate Investment Property, Accumulated Depreciation (Decrease) increase in cash, cash equivalents and restricted cash Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation