Fair Value Disclosures [Abstract] Summary of the Terms of Agreements and Fair Values of Derivative Financial Instruments Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block] Summary of Effect of Derivative Financial Instruments Designated as Cash Flow Hedges Derivative Instruments, Gain (Loss) [Table Text Block] Schedule of the Aggregate Carrying Value of Debt and Estimates of Fair Value Fair Value, by Balance Sheet Grouping [Table Text Block] Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract] Deferred Costs [Table] Deferred Costs [Table] Deferred Costs [Table] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] Acquired in-place lease value and deferred leasing costs [Member] Acquired In Place Lease Value And Deferred Leasing Costs [Member] Acquired In Place Lease Value And Deferred Leasing Costs [Member] Acquired above-market leases [Member] Above Market Leases [Member] Deferred Costs [Line Items] Deferred Costs [Line Items] [Line Items] for Deferred Costs [Table] Leasing costs Deferred Costs, Leasing, Gross Acquired intangible assets, gross Finite-Lived Intangible Assets, Gross Total deferred costs, gross Deferred Costs, Gross Deferred Costs, Gross Less: accumulated amortization Accumulated Amortization, Deferred Costs Accumulated Amortization, Deferred Costs Total deferred costs, net, excluding net deferred financing costs Deferred Costs, Noncurrent Business Combinations [Abstract] Consideration paid: Business Combination, Consideration Transferred [Abstract] Cash and issuance of Class A Common Stock, Class B Common Stock, and Series PR OP units Business Combination, Consideration Transferred, Cash and Equity Interests Issued and Issuable Business Combination, Consideration Transferred, Cash and Equity Interests Issued and Issuable Debt assumed Business Combination, Consideration Transferred, Liabilities Incurred Total consideration paid Business Combination, Consideration Transferred Net assets acquired: Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Less Noncontrolling Interest [Abstract] Land and building and improvements Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Buildings and Improvements Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Buildings and Improvements Acquired below-market ground leases Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Acquired Below-Market Ground Leases Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Acquired Below-Market Ground Leases Acquired above-market leases Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Acquired 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liabilities, net of other assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Liabilities, Net of Other Assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Liabilities, Net of Other Assets Total net assets acquired Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net Related Party Transactions [Abstract] Schedule of Related Party Transactions, by Related Party [Table] Schedule of Related Party Transactions, by Related Party [Table] Related Party [Axis] Related Party [Axis] Related Party [Domain] Related Party [Domain] Malkin Group [Member] Malkin Group [Member] Malkin Group [Member] Related Party Transaction [Line Items] Related Party Transaction [Line Items] Number of properties protected Related Party Transaction, Number of Properties Protected Related Party Transaction, Number of Properties Protected Aggregate number of operating partnership units and common stock threshold during tax protection period Related Party Transaction, Aggregate Number of Operating Partnership Units and Common Stock Threshold During Tax Protection Period Related Party Transaction, Aggregate Number of Operating Partnership Units and Common Stock Threshold During Tax Protection Period Bottom dollar guarantee of aggregate indebtedness during tax protection period Related Party Transaction, Bottom Dollar Guarantee of Aggregate Indebtedness During tax Protection Period Related Party Transaction, Bottom Dollar Guarantee of Aggregate Indebtedness During tax Protection Period Quarterly Financial Information Disclosure [Abstract] Revenues Revenues Total operating income (loss) Operating Income (Loss) Net income Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Net income attributable to common unitholders Net Income (Loss) Attributable to Parent Basic and diluted net income per share (in dollars per share) Earnings Per Share, Basic and Diluted Accounting Policies [Abstract] Summary of Significant Accounting Policies Significant Accounting Policies [Text Block] Debt Disclosure [Abstract] Schedule of Debt Schedule of Long-term Debt Instruments [Table Text Block] Schedule of Maturities of Long-term Debt Schedule of Maturities of Long-term Debt [Table Text Block] Schedule of Deferred Costs, Net Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Table Text Block] Stockholders' Equity Note Disclosure, Disclosure of Compensation Related Costs, Share-based Payments and Earnings Per Share [Abstract] Stockholders' Equity Note Disclosure, Disclosure of Compensation Related Costs, Share-based Payments and Earnings Per Share [Abstract] Capital Stockholders' Equity Note Disclosure, Disclosure of Compensation Related Costs, Share-based Payments and Earnings Per Share [Text Block] Stockholders' Equity Note Disclosure, Disclosure of Compensation Related Costs, Share-based Payments and Earnings Per Share [Text Block] Leases [Abstract] Rental Income Other Operating Income and Expense [Text Block] Credit Facility [Axis] Credit Facility [Axis] Credit Facility [Domain] Credit Facility [Domain] Revolving credit facility [Member] Revolving Credit Facility [Member] Debt Instrument [Axis] Debt Instrument [Axis] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Unsecured revolving credit facility [Member] Unsecured Revolving Credit Facility [Member] Unsecured Revolving Credit Facility [Member] Lease agreements [Member] Lease Agreements [Member] Ground lease [Member] Ground Lease [Member] Ground Lease [Member] In-place leases and deferred leasing costs [Member] Leases and Deferred Leasing Costs [Member] Leases and Deferred Leasing Costs [Member] Above-market leases [Member] Below-market Lease [Member] Below Market Lease [Member] Below Market Lease [Member] Business Acquisition [Axis] Business Acquisition [Axis] Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree [Domain] Empire State Building observatory operations [Member] Empire State Building Observatory Operations [Member] Empire State Building Observatory Operations [Member] Empire State Building [Member] Empire State Building, L.L.C. [Member] Empire State Building, L.L.C. [Member] 501 Seventh Avenue [Member] Location 501 Seventh Avenue [Member] Location 501 Seventh Avenue [Member] Net deferred financing costs Debt Issuance Costs, Line of Credit Arrangements, Net Amortization of deferred leasing and acquired deferred leasing costs Amortization of Deferred Leasing Fees Amortization expense related to acquired lease intangibles Amortization of Intangible Assets Amortization of acquired above and below-market leases, net Amortization of above and below Market Leases Weighted-average amortization period Acquired Finite-lived Intangible Assets, Weighted Average Useful Life Goodwill Goodwill Subsequent Events [Abstract] Subsequent Events Subsequent Events [Text Block] Operating Leases [Table] Operating Leases [Table] Operating Leases [Table] Range [Axis] Range [Axis] Range [Domain] Range [Domain] Minimum [Member] Minimum [Member] Maximum [Member] Maximum [Member] Operating Leases [Line Items] Operating Leases [Line Items] [Line Items] for Operating Leases [Table] Term of lease Lessor Leasing Arrangements, Operating Leases, Term of Contract Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] Mortgages [Member] Mortgages [Member] Debt Instrument [Line Items] Debt Instrument [Line Items] 2017 amortization Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months, Portion Attributable to Amortization Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months, Portion Attributable to Amortization 2018 amortization Long-term Debt, Maturities, Repayments of Principal in Year Two, Portion Attributable to Amortization Long-term Debt, Maturities, Repayments of Principal in Year Two, Portion Attributable to Amortization 2019 amortization Long-term Debt, Maturities, Repayments of Principal in Year Three, Portion Attributable to Amortization Long-term Debt, Maturities, Repayments of Principal in Year Three, Portion Attributable to Amortization 2020 amortization Long-term Debt, Maturities, Repayments of Principal in Year Four, Portion Attributable to Amortization Long-term Debt, Maturities, Repayments of Principal in Year Four, Portion Attributable to Amortization 2021 amortization Long-term Debt, Maturities, Repayments of Principal in Year Five, Portion Attributable to Amortization Long-term Debt, Maturities, Repayments of Principal in Year Five, Portion Attributable to Amortization Thereafter Long-term Debt, Maturities, Repayments of Principal after Year Five, Portion Attributable to Amortization Long-term Debt, Maturities, Repayments of Principal after Year Five, Portion Attributable to Amortization Total amortization Long-term Debt, Maturities, Repayments of Principal, Portion Attributable to Amortization Long-term Debt, Maturities, Repayments of Principal, Portion Attributable to Amortization 2017 maturities Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months, Principal Maturities Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months, Principal Maturities 2018 maturities Long-term Debt, Maturities, Repayments of Principal in Year Two, Principal Maturities Long-term Debt, Maturities, Repayments of Principal in Year Two, Principal Maturities 2019 maturities Long-term Debt, Maturities, Repayments of Principal in Year Three, Principal Maturities Long-term Debt, Maturities, Repayments of Principal in Year Three, Principal Maturities 2020 maturities Long-term Debt, Maturities, Repayments of Principal in Year Four, Principal Maturities Long-term Debt, Maturities, Repayments of Principal in Year Four, Principal Maturities 2021 maturities Long-term Debt, Maturities, Repayments of Principal in Year Five, Principal Maturities Long-term Debt, Maturities, Repayments of Principal in Year Five, Principal Maturities Thereafter Long-term Debt, Maturities, Repayments of Principal after Year Five, Principal Maturities Long-term Debt, Maturities, Repayments of Principal after Year Five, Principal Maturities Total maturities Long-term Debt, Maturities, Repayments of Principal, Principal Maturities Long-term Debt, Maturities, Repayments of Principal, Principal Maturities 2017 Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months 2018 Long-term Debt, Maturities, Repayments of Principal in Year Two 2019 Long-term Debt, Maturities, Repayments of Principal in Year Three 2020 Long-term Debt, Maturities, Repayments of Principal in Year Four 2021 Long-term Debt, Maturities, Repayments of Principal in Year Five Thereafter Long-term Debt, Maturities, Repayments of Principal after Year Five Total Long-term Debt, Gross Statement of Comprehensive Income [Abstract] Other comprehensive loss: Other Comprehensive Income (Loss), Net of Tax [Abstract] Unrealized loss on valuation of interest rate swap agreements Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax Other comprehensive loss Other Comprehensive Income (Loss), Net of Tax Comprehensive income Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Certain persons receiving common stock or operating partnership units in formation transactions [Member] Certain Persons Receiving Equity in Formation Transactions [Member] Certain Persons Receiving Equity in Formation Transactions [Member] Related Party Transaction [Axis] Related Party Transaction [Axis] Related Party Transaction [Domain] Related Party Transaction [Domain] Registration rights agreement [Member] Registration Rights Agreement [Member] Registration Rights Agreement [Member] Registrable shares market value, minimum Related Party Transaction, Underwriting Offering, Registrable Shares Market Value, Minimum Related Party Transaction, Underwriting Offering, Registrable Shares Market Value, Minimum Number of underwritten offerings, maximum, during 12-month period following shelf effective date Related Party Transaction, Number of Underwritten Offerings, During Twelve Months Following Shelf Effective Date, Maximum Related Party Transaction, Number of Underwritten Offerings, During Twelve Months Following Shelf Effective Date, Maximum Number of underwritten offerings, maximum Related Party Transaction, Number of Underwritten Offerings, Maximum Related Party Transaction, Number of Underwritten Offerings, Maximum Primary shares cutback value, minimum Related Party Transaction, Primary Shares Cutback Amount, Minimum Related Party Transaction, Primary Shares Cutback Amount, Minimum Payments for fees and registration per underwritten offering, maximum (in dollars per offering) Related Party Transactions, Payments for Fees And Registration Per Underwritten Offering, Maximum Related Party Transactions, Payments for Fees And Registration Per Underwritten Offering, Maximum Noncontrolling Interest [Table] Noncontrolling Interest [Table] Partner Type [Axis] Partner Type [Axis] Partner Type of Partners' Capital Account, Name [Domain] Partner Type of Partners' Capital Account, Name [Domain] General Partner [Member] General Partner [Member] Equity Components [Axis] Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Common shares [Member] Common Stock [Member] Class of Stock [Axis] Class of Stock [Axis] Class of Stock [Domain] Class of Stock [Domain] Common Class A [Member] Common Class A [Member] Series PR Common Units [Member] Series PR Common Units [Member] Series PR Common Units [Member] Legal Entity [Axis] Legal Entity [Axis] Entity [Domain] Entity [Domain] ESRT [Member] Parent Company [Member] Q REIT Holding LLC [Member] Qatar Investment Authority, Affiliate [Member] Qatar Investment Authority, Affiliate [Member] Noncontrolling Interest [Line Items] Noncontrolling Interest [Line Items] Issuance of common shares (in shares) Stock Issued During Period, Shares, New Issues Par value (in dollars per share) Common Stock, Par or Stated Value Per Share Common shares issued (USD per share) Shares Issued, Price Per Share Gross proceeds from sale of shares Proceeds from Issuance of Common Stock Interest held by subsidiary of QIA Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners Minimum interest required to be held by affiliate of QIA in order to purchase new equity securities Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners, Minimum Interest Required Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners, Minimum Interest Required Threshold of equity securities issuance where top up rights are exercisable Stock Issued During Period, Value, New Issues, Threshold for Top Up Rights Stock Issued During Period, Value, New Issues, Threshold for Top Up Rights Threshold to indemnify Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners, Threshold to be Indemnified Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners, Threshold to be Indemnified Income Tax Disclosure [Abstract] Current federal tax Current Federal Tax Expense (Benefit) Current state and local tax Current State and Local Tax Expense (Benefit) Total current tax Current Income Tax Expense (Benefit) Deferred federal tax Deferred Federal Income Tax Expense (Benefit) Deferred state and local tax Deferred State and Local Income Tax Expense (Benefit) Total deferred tax Deferred Income Tax Expense (Benefit) Income tax expense Income Tax Expense (Benefit) Effective income tax rate, percent Effective Income Tax Rate Reconciliation, Percent Federal tax expense at 34% statutory rate Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount State income taxes, net of federal benefit Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount Federal statutory income tax rate Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Schedule of Future Minimum Lease Payments Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block] Summary of Percent of Total Rental Revenue Schedules of Concentration of Risk, by Risk Factor [Table Text Block] Schedule of Contributions to Multiemployer Plans Schedule of Multiemployer Plans [Table Text Block] Statement of Financial Position [Abstract] Statement [Table] Statement [Table] Series PR Operating Partnership Units [Member] Series ES Operating Partnership Units [Member] Series ES Operating Partnership Units [Member] Series ES Operating Partnership Units [Member] Series 60 Operating Partnership Units [Member] Series 60 Operating Partnership Units [Member] Series 60 Operating Partnership Units [Member] Series 250 Operating Partnership Units [Member] Series 250 Operating Partnership Units [Member] Series 250 Operating Partnership Units [Member] Statement [Line Items] Statement [Line Items] Tenant and other receivables allowance Allowance for Doubtful Accounts Receivable Deferred rent receivables allowance Allowance for Deferred Rent Receivables Allowance for Deferred Rent Receivables Private perpetual preferred units, liquidation preference per share (in dollars per share) Private Perpetual Preferred Units, Liquidation Preference Per Share Private Perpetual Preferred Units, Liquidation Preference Per Share Private perpetual preferred units, issued (in shares) Private Perpetual Preferred Units, Issued, Shares Private Perpetual Preferred Units, Issued, Shares Private perpetual preferred units, outstanding (in shares) Private Perpetual Preferred Units, Outstanding, Shares Private Perpetual Preferred Units, Outstanding, Shares General partner operating partnership units, outstanding (in shares) General Partners' Capital Account, Units Outstanding Limited partner operating partnership units, outstanding (in shares) Limited Partners' Capital Account, Units Outstanding Acquisitions Business Combination Disclosure [Text Block] Line of Credit Facility [Table] Line of Credit Facility [Table] Variable Rate [Axis] Variable Rate [Axis] Variable Rate [Domain] Variable Rate [Domain] Eurodollar [Member] Eurodollar [Member] Base Rate [Member] Base Rate [Member] Line of Credit Facility [Line Items] Line of Credit Facility [Line Items] Current borrowing capacity Line of Credit Facility, Current Borrowing Capacity Maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Basis spread on variable rate Debt Instrument, Basis Spread on Variable Rate Option to extend maturity, number Debt Instrument, Option to Extend, Number Debt Instrument, Option to Extend, Number Extension period Line of Credit Facility, Extension Period Line of Credit Facility, Extension Period Extension fee percent of outstanding commitments under revolving credit facility Line of Credit Facility, Extension Fee, Percent of Outstanding Commitments Under Revolving Credit Facility Line of Credit Facility, Extension Fee, Percent of Outstanding Commitments Under Revolving Credit Facility Maximum leverage ratio Line of Credit Facility, Covenant Compliance, Maximum Leverage Ratio Line of Credit Facility, Covenant Compliance, Maximum Leverage Ratio Maximum consolidated secured indebtedness to asset value Line of Credit Facility, Covenant Compliance, Maximum Consolidated Secured Indebtedness to Asset Value Line of Credit Facility, Covenant Compliance, Maximum Consolidated Secured Indebtedness to Asset Value Minimum tangible net worth Line of Credit Facility, Covenant Compliance, Minimum Tangible Net Worth Line of Credit Facility, Covenant Compliance, Minimum Tangible Net Worth Tangible net worth, minimum percent of net equity proceeds received Line of Credit Facility, Covenant Compliance, Tangible Net Worth. Minimum Percent of Net Equity Proceeds Received Line of Credit Facility, Covenant Compliance, Tangible Net Worth. Minimum Percent of Net Equity Proceeds Received Minimum adjusted EBITDA to consolidated fixed charges Line of Credit Facility, Covenant Compliance, Minimum Adjusted EBITDA to Consolidated Fixed Charges Line of Credit Facility, Covenant Compliance, Minimum Adjusted EBITDA to Consolidated Fixed Charges Minimum net operating income to unsecured debt Line of Credit Facility, Covenant Compliance, Minimum Net Operating Income to Unsecured Debt Line of Credit Facility, Covenant Compliance, Minimum Net Operating Income to Unsecured Debt Maximum ratio of unsecured debt to unencumbered asset value Line of Credit Facility, Covenant Compliance, Maximum Ratio of Unsecured Debt to Unencumbered Asset Value Line of Credit Facility, Covenant Compliance, Maximum Ratio of Unsecured Debt to Unencumbered Asset Value Maximum consolidated secured recourse debt to asset value Line of Credit Facility, Covenant Compliance, Maximum Consolidated Secured Recourse Debt to Asset Value Line of Credit Facility, Covenant Compliance, Maximum Consolidated Secured Recourse Debt to Asset Value Fair Value, by Balance Sheet Grouping [Table] Fair Value, by Balance Sheet Grouping [Table] Derivative Instrument [Axis] Derivative Instrument [Axis] Derivative Contract [Domain] Derivative Contract [Domain] Interest rate swaps [Member] Interest Rate Swap [Member] Exchangeable senior notes [Member] Exchangeable Senior Notes due August 15, 2019 [Member] Exchangeable Senior Notes due August 15, 2019 [Member] Term Loan [Member] Term Loan [Member] Term Loan [Member] Exchangeable notes [Member] Convertible Debt [Member] Senior Notes [Member] Senior Notes [Member] Fair Value, Hierarchy [Axis] Fair Value, Hierarchy [Axis] Fair Value Hierarchy [Domain] Fair Value Hierarchy [Domain] Fair Value, Inputs, Level 1 [Member] Fair Value, Inputs, Level 1 [Member] Fair Value, Inputs, Level 2 [Member] Fair Value, Inputs, Level 2 [Member] Fair Value, Inputs, Level 3 [Member] Fair Value, Inputs, Level 3 [Member] Measurement Basis [Axis] Measurement Basis [Axis] Fair Value Measurement [Domain] Fair Value Measurement [Domain] Portion at Fair Value Measurement [Member] Portion at Fair Value Measurement [Member] Carrying Amount [Member] Reported Value Measurement [Member] Fair Value [Member] Estimate of Fair Value Measurement [Member] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Interest rate swaps included in prepaid expenses and other assets Derivative Asset Interest rate swaps included in accounts payable and accrued expenses Derivative Liability Long-term debt, fair value Long-term Debt, Fair Value Summary of Quarterly Financial Information (unaudited) Quarterly Financial Information [Text Block] Schedule of Allocation of Purchase Price for Assets and Liabilities Acquired Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block] Statement of Cash Flows [Abstract] Cash Flows From Operating Activities Net Cash Provided by (Used in) Operating Activities [Abstract] Net income Adjustments to reconcile net income to net cash provided by operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Depreciation and amortization Depreciation, Depletion and Amortization Amortization of deferred finance costs and debt premiums and discount Amortization of Financing Costs and Debt Premium Amortization of Financing Costs and Debt Premium Amortization of acquired above and below-market leases, net Amortization of acquired below-market ground leases Amortization of below Market Ground Lease Amortization of below Market Ground Lease Straight-lining of rental revenue Straight Line Rent Equity based compensation Share-based Compensation Increase (decrease) in cash flows due to changes in operating assets and liabilities (excluding the effect of acquisitions): Increase (Decrease) in Operating Capital [Abstract] Restricted cash Increase (Decrease) in Restricted Cash for Operating Activities Tenant and other receivables Increase (Decrease) in Accounts Receivable Deferred leasing costs Increase (Decrease) in Deferred Leasing Fees Prepaid expenses and other assets Increase (Decrease) in Prepaid Expense and Other Assets Accounts payable and accrued expenses Increase (Decrease) in Accounts Payable and Accrued Expenses Increase (Decrease) in Accounts Payable and Accrued Expenses Deferred revenue and other liabilities Increase (Decrease) in Deferred Revenue and Other Liabilities Increase (Decrease) in Deferred Revenue and Other Liabilities Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities Cash Flows From Investing Activities Net Cash Provided by (Used in) Investing Activities [Abstract] Decrease (increase) in restricted cash for investing activities Increase (Decrease) in Restricted Cash Additions to building and improvements Payments for Capital Improvements Development costs Development Costs, Investing Activity Development Costs, Investing Activity Acquisition of real estate property, net of cash received Payments to Acquire Businesses, Net of Cash Acquired Net cash used in investing activities Net Cash Provided by (Used in) Investing Activities Cash Flows From Financing Activities Net Cash Provided by (Used in) Financing Activities [Abstract] Proceeds from unsecured revolving credit facility Proceeds from Unsecured Notes Payable Repayments of unsecured revolving credit facility Repayments of Unsecured Debt Proceeds from mortgage notes payable Proceeds from Issuance of Long-term Debt Repayment of mortgage notes payable Repayments of Long-term Debt Proceeds from senior unsecured notes Proceeds from Issuance of Senior Long-term Debt Proceeds from unsecured term loan Proceeds from Unsecured Debt, Term Loan Proceeds from Unsecured Debt, Term Loan Proceeds from term loan and credit facility Proceeds from Lines of Credit Repayments of term loan and credit facility Repayments of Lines of Credit Deferred financing costs Payments of Financing Costs Net proceeds from the issuance of operating partnership units Private perpetual preferred unit distributions Payments of Private Perpetual Preferred Units Distributions Payments of Private Perpetual Preferred Units Distributions Distributions Payments of Dividends Net cash provided by (used in) financing activities Net Cash Provided by (Used in) Financing Activities Net increase (decrease) in cash and cash equivalents Cash and Cash Equivalents, Period Increase (Decrease) Cash and cash equivalents—beginning of period Cash and Cash Equivalents, at Carrying Value Cash and cash equivalents—end of period Supplemental disclosures of cash flow information: Supplemental Cash Flow Information [Abstract] Cash paid for interest Interest Paid Cash paid for income taxes Income Taxes Paid Non-cash investing and financing activities: Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] Building and improvements included in accounts payable and accrued expenses Commercial Real Estate Incurred but Not yet Paid Commercial Real Estate Incurred but Not yet Paid Derivative instruments at fair values included in prepaid expenses and other assets Derivative Financial Instruments Included in Prepaid Expenses and Other Assets Derivative Financial Instruments Included in Prepaid Expenses and Other Assets Derivative instruments at fair values included in accounts payable and accrued expenses Derivative Financial Instruments Included in Accounts Payable and Accrued Expense Derivative Financial Instruments Included in Accounts Payable and Accrued Expense Conversion of operating partnership units and Class B shares to Class A shares Conversion of Stock, Amount Converted Issuance of operating partnership units in connection with the acquisition of real estate properties Stock Issued Debt assumed with the acquisition of real estate properties Noncash or Part Noncash Acquisition, Debt Assumed Acquisition of working capital (deficit), net of cash Noncash or Part Noncash Acquisition, Working Capital Noncash or Part Noncash Acquisition, Working Capital Redemption of operating partnership units to repay other receivable Redemption of Partnership Units to Repay Receivables Redemption of Partnership Units to Repay Receivables Partners' Capital [Table] Partners' Capital [Table] Partners' Capital [Table] Private Perpetual Preferred Units [Member] Private Perpetual Preferred Units [Member] Private Perpetual Preferred Units [Member] Partners' Capital [Line Items] Partners' Capital [Line Items] [Line Items] for Partners' Capital [Table] Shares and Units [Abstract] Partners' Capital Account, Units, Sale of Units [Abstract] OP units outstanding (shares) Units of Partnership Interest, Amount OP units owned by the Company (shares) OP units owned by the Company, percent Limited Liability Company (LLC) or Limited Partnership (LP), Managing Member or General Partner, Ownership Interest OP units not owned by the Company (shares) OP units not owned by the Company, percent Limited Liability Company (LLC) or Limited Partnership (LP), Members or Limited Partners, Ownership Interest Percentage of dividends on common stock received until performance criteria met for LTIP units Percentage of Dividends on Common Stock Received Until Performance Criteria Met for LTIP Units Percentage of Dividends on Common Stock Received Until Performance Criteria Met for LTIP Units Percentage of dividends on common stock received after performance criteria met for LTIP units Percentage of Dividends on Common Stock Received After Performance Criteria Met for LTIP Units Percentage of Dividends on Common Stock Received After Performance Criteria Met for LTIP Units Percentage of dividends on common stock received in periods after performance criteria met for LTIP units Percentage of Dividends on Common Stock Received In Periods After Performance Criteria Met for LTIP Units Percentage of Dividends on Common Stock Received In Periods After Performance Criteria Met for LTIP Units Private perpetual preferred units (shares) Private Perpetual Preferred Units Issued During Period, Units, New Issues Private Perpetual Preferred Units Issued During Period, Units, New Issues Dividend declared (in dollars per share) Common Stock, Dividends, Per Share, Declared Segment Reporting [Abstract] Schedule of Segment Reporting Information, by Segment Schedule of Segment Reporting Information, by Segment [Table Text Block] Deferred Costs, Acquired Lease Intangibles and Goodwill Other Assets Disclosure [Text Block] Debt Debt Disclosure [Text Block] Number of reportable segments (segment) Number of Reportable Segments SEC Schedule III, Real Estate and Accumulated Depreciation Disclosure [Abstract] SEC Schedule III, Real Estate and Accumulated Depreciation, by Property [Table] SEC Schedule III, Real Estate and Accumulated 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vesting percentage after five years Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Percentage After Five Years Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Percentage After Five Years Period of service, upon completion of which, grantee's LTIP unit and restricted stock awards will immediately vest Share-based Compensation Arrangement by Share-based Payment Award, Award Requisite Service Period Expected volatility rate look-back period (in years) Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate Look-Back Period Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate Look-Back Period Share-based compensation arrangement by share-based payment award, equity instrument other than options, forfeitures rate Share-based Compensation Arrangement by Share-based Payment Award, Equity Instrument other 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Receivable for Operating Leases Schedule of Future Minimum Payments Receivable for Operating Leases [Table Text Block] Schedule of Future Minimum Payments Receivable for Operating Leases [Table Text Block] Derivative Instruments, Gain (Loss) [Table] Derivative Instruments, Gain (Loss) [Table] Derivative Instruments, Gain (Loss) [Line Items] Derivative Instruments, Gain (Loss) [Line Items] Amount of gain (loss) recognized in other comprehensive income (loss) - effective portion Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income (Loss), Effective Portion, Net Amount of gain (loss) reclassified from accumulated other comprehensive income (loss) into interest expense - effective portion Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net Amount of gain (loss) recognized in other Income/expense - ineffective portion Derivative Instruments, Gain (Loss) Recognized in Income, Ineffective Portion and Amount Excluded 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Capital Expenditures Schedule of Business Acquisitions, by Acquisition [Table] Schedule of Business Acquisitions, by Acquisition [Table] Common Class B [Member] Common Class B [Member] Series PR Operating Partnership Units [Member] 111 West 33rd Street [Member] 111 West 33rd Street (formerly 112 West 34th Street) [Member] 111 West 33rd Street (formerly 112 West 34th Street) [Member] 1400 Broadway [Member] Location 1400 Broadway [Member] Location 1400 Broadway [Member] Business Acquisition [Line Items] Business Acquisition [Line Items] Business combination, consideration transferred Payments to acquire business Payments to Acquire Businesses, Gross Business combination, consideration transferred, equity interests issued and issuable Business Combination, Consideration Transferred, Equity Interests Issued and Issuable Number of shares issued (in shares) Business Acquisition, Equity Interest Issued or Issuable, Number of Shares Share price (USD per share) Business Acquisition, Share Price 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Broadway, New York, NY [Member] Location 1350 Broadway Associates [Member] Location 1350 Broadway Associates [Member] 250 West 57th Street, New York, NY [Member] Property, 250 West 57th Street, New York, NY [Member] Property, 250 West 57th Street, New York, NY [Member] 501 Seventh Avenue, New York, NY [Member] Property, 501 Seventh Avenue, New York, NY [Member] Property, 501 Seventh Avenue, New York, NY [Member] 1359 Broadway, New York, NY [Member] Property, 1359 Broadway, New York, NY [Member] Property, 1359 Broadway, New York, NY [Member] 350 Fifth Avenue (Empire State Building), New York, NY [Member] Property, 350 Fifth Avenue (Empire State Building), New York, NY [Member] Property, 350 Fifth Avenue (Empire State Building), New York, NY [Member] One Grand Central Place, New York, NY [Member] Property, One Grand Central Place, New York, NY [Member] Property, One Grand Central Place, New York, NY [Member] First Stamford Place, Stamford, CT [Member] Property, First Stamford Place, Stamford, CT [Member] Property, First Stamford Place, Stamford, CT [Member] One Station Place, Stamford, CT (Metro Center) [Member] Property, One Station Place, Stamford, CT (Metro Center) [Member] Property, One Station Place, Stamford, CT (Metro Center) [Member] 383 Main Avenue, Norwalk, CT [Member] Property, 383 Main Avenue, Norwalk, CT [Member] Property, 383 Main Avenue, Norwalk, CT [Member] 500 Mamaroneck Avenue, Harrison, NY [Member] Property, 500 Mamaroneck Avenue, Harrison, NY [Member] Property, 500 Mamaroneck Avenue, Harrison, NY [Member] 10 Bank Street, White Plains, NY [Member] Property, 10 Bank Street, White Plains, NY [Member] Property, 10 Bank Street, White Plains, NY [Member] 10 Union Square, New York, NY [Member] Property, 10 Union Square, New York, NY [Member] Property, 10 Union Square, New York, NY [Member] 1542 Third Avenue, New York, NY [Member] Property, 1542 Third Avenue, New York, NY [Member] Property, 1542 Third Avenue, New York, NY [Member] 1010 Third Avenue, New York, NY and 77 West 55th Street, New York, NY [Member] Property, 1010 Third Avenue, New York, NY and 77 West 55th Street, New York, NY [Member] Property, 1010 Third Avenue, New York, NY and 77 West 55th Street, New York, NY [Member] 69-97 Main Street, Westport, CT [Member] Property, 69-97 Main Street, Westport, CT [Member] Property, 69-97 Main Street, Westport, CT [Member] 103-107 Main Street, Westport, CT [Member] Property, 103-107 Main Street, Westport, CT [Member] Property, 103-107 Main Street, Westport, CT [Member] Transportation Hub, Stamford, CT [Member] Transportation Hub, Stamford, CT [Member] Transportation Hub, Stamford, CT [Member] Office/Retail [Member] Office/Retail [Member] Office/Retail [Member] Land [Member] Land Property [Member] Land Property [Member] Encumbrances SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances Initial Cost to the Company SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract] Land SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land Building & Improvements SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements Cost Capitalized Subsequent to Acquisition SEC Schedule III Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract] Improvements SEC Schedule III, Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements Gross Amount at which Carried SEC Schedule III, Real Estate, Gross [Abstract] Land SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Land Buildings & Improvements SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements Total Accumulated Depreciation SEC Schedule III, Real Estate Accumulated Depreciation SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward] SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward] Balance, beginning of year Depreciation expense SEC Schedule III, Real Estate Accumulated Depreciation, Depreciation Expense Disposals SEC Schedule III, Real Estate Accumulated Depreciation, Real Estate Sold Balance, end of year Financial Instruments and Fair Values Fair Value Disclosures [Text Block] Subsequent Event [Table] Subsequent Event [Table] Subsequent Event Type [Axis] Subsequent Event Type [Axis] Subsequent Event Type [Domain] Subsequent Event Type [Domain] Subsequent Event [Member] Subsequent Event [Member] Subsequent Event [Line Items] Subsequent Event [Line Items] Valuation and Qualifying Accounts [Abstract] Schedule II - Valuation and Qualifying Accounts Schedule of Valuation and Qualifying Accounts Disclosure [Text Block] Segment Reporting Segment Reporting Disclosure [Text Block] Schedule of Amortizing Acquired Intangible Assets and Liabilities Schedule of Amortizing Acquired Intangible Assets and Liabilities [Table Text Block] Schedule of Amortizing Acquired Intangible Assets and Liabilities [Table Text Block] Schedule of Future Amortization Expense and Rental Revenue from Acquired Intangible Assets Schedule of Future Amortization Expense and Rental Revenue from Acquired Intangible Assets [Table Text Block] Schedule of Future Amortization Expense and Rental Revenue from Acquired Intangible Assets [Table Text Block] Convertible Debt [Member] 10 Bank Street [Member] Fixed Rate Debt, 10 Bank Street [Member] Fixed Rate Debt, 10 Bank Street [Member] 1542 Third Avenue [Member] Fixed Rate Debt, 1542 Third Avenue [Member] Fixed Rate Debt, 1542 Third Avenue [Member] First Stamford Place [Member] Fixed Rate Debt, First Stamford Place [Member] Fixed Rate Debt, First Stamford Place [Member] 1010 Third Avenue and 77 West 55th Street [Member] Fixed Rate Debt, 1010 Third Avenue and 77 West 55th Street [Member] Fixed Rate Debt, 1010 Third Avenue and 77 West 55th Street [Member] 383 Main Avenue [Member] Fixed Rate Debt, 383 Main Avenue [Member] Fixed Rate Debt, 383 Main Avenue [Member] 1333 Broadway [Member] Fixed Rate Debt - 1333 Broadway [Member] Fixed Rate Debt - 1333 Broadway [Member] 1400 Broadway - First Lien [Member] 1400 Broadway - First Lien [Member] 1400 Broadway - First Lien [Member] 1400 Broadway - Second Lien [Member] 1400 Broadway - Second Lien [Member] 1400 Broadway - Second Lien [Member] 112 West 34th Street - First Lien [Member] 112 West 34th Street - First Lien [Member] 112 West 34th Street - First Lien [Member] 112 West 34th Street - Second Lien [Member] 112 West 34th Street - Second Lien [Member] 112 West 34th Street - Second Lien [Member] 1350 Broadway [Member] Fixed Rate Debt - 1350 Broadway - First Lien Mortgage Loan [Member] Fixed Rate Debt - 1350 Broadway - First Lien Mortgage Loan [Member] Metro Center [Member] Metro Center Debt [Member] Fixed Rate Debt - Metro Center Debt [Member] 10 Union Square [Member] Fixed Rate Debt, 10 Union Square [Member] Fixed Rate Debt, 10 Union Square [Member] Exchangeable Senior Notes due August 15, 2019 [Member] Series A Senior Notes due 2025 [Member] Series A Senior Notes due 2025 [Member] Series A Senior Notes due 2025 [Member] Series B Senior Notes due 2027 [Member] Series B Senior Notes due 2027 [Member] Series B Senior Notes due 2027 [Member] Series C Senior Notes due 2030 [Member] Series C Senior Notes due 2030 [Member] Series C Senior Notes due 2030 [Member] Unsecured Term Loan Facility [Member] Fixed rate debt Long-term Debt, Percentage Bearing Fixed Interest, Amount Unsecured revolving credit facility Long-term Line of Credit Total principal Unamortized premiums, net of unamortized discount Debt Instrument, Unamortized Discount (Premium), Net Deferred financing costs, net Total Long-term Debt Stated Rate Debt Instrument, Interest Rate, Stated Percentage Effective Rate Debt Instrument, Interest Rate, Effective Percentage Pay rate Concentration Risk [Table] Concentration Risk [Table] Concentration Risk Type [Axis] Concentration Risk Type [Axis] Concentration Risk Type [Domain] Concentration Risk Type [Domain] Customer concentration risk [Member] Customer Concentration Risk [Member] Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Domain] Rental revenue [Member] Sales Revenue, Services, Net [Member] Customer [Axis] Customer [Axis] Customer [Domain] Customer [Domain] Customer 1 [Member] Major Tenant One [Member] Major Tenant One [Member] Customer 2 [Member] Major Tenant Two [Member] Major Tenant Two [Member] Customer 3 [Member] Customer 3 [Member] Customer 3 [Member] Customer 4 [Member] Customer 4 [Member] Customer 4 [Member] Customer 5 [Member] Customer 5 [Member] Customer 5 [Member] Empire State Building Co. [Member] Empire State Building Co. [Member] Empire State Building Co. [Member] One Grand Central Place [Member] One Grand Central Place [Member] One Grand Central Place [Member] First Stamford Place [Member] First Stamford Place [Member] First Stamford Place [Member] 250 West 57th Street [Member] Concentration Risk [Line Items] Concentration Risk [Line Items] Number of tenants Concentration Risk, Number of Tenants Concetration Risk, Number of Tenants Concentration risk percentage Concentration Risk, Percentage Valuation and Qualifying Accounts Disclosure [Table] Valuation and Qualifying Accounts Disclosure [Table] Valuation Allowances and Reserves Type [Axis] Valuation Allowances and Reserves Type [Axis] Valuation Allowances and Reserves [Domain] Valuation Allowances and Reserves [Domain] Allowance for Doubtful Accounts [Member] Allowance for Doubtful Accounts [Member] Valuation and Qualifying Accounts Disclosure [Line Items] Valuation and Qualifying Accounts Disclosure [Line Items] Movement in Valuation Allowances and Reserves [Roll Forward] Movement in Valuation Allowances and Reserves [Roll Forward] Balance At Beginning of Year Valuation Allowances and Reserves, Balance Additions Charged Against Operations Valuation Allowances and Reserves, Additions for Charges to Cost and Expense Uncollectible Accounts Written-Off Valuation Allowances and Reserves, Deductions Balance at End of Year Deferred tax assets: Components of Deferred Tax Assets [Abstract] Deferred revenue on unredeemed observatory admission ticket sales Deferred Tax Assets, Deferred Income ASSETS Assets [Abstract] Commercial real estate properties, at cost: Real Estate Investment Property, at Cost [Abstract] Land Land Development costs Development in Process Building and improvements Investment Building and Building Improvements Commercial real estate properties, at cost, gross Real Estate Investment Property, at Cost Less: accumulated depreciation Real Estate Investment Property, Accumulated Depreciation Commercial real estate properties, net Real Estate Investment Property, Net Cash and cash equivalents Restricted cash Restricted Cash and Cash Equivalents Tenant and other receivables, net of allowance of $3,333 and $2,792 in 2016 and 2015, respectively Accounts and Notes Receivable, Net Deferred rent receivables, net of allowance of $390 and $245 in 2016 and 2015, respectively Deferred Rent Receivables, Net Prepaid expenses and other assets Prepaid Expense and Other Assets Deferred costs, net Deferred Costs Acquired below market ground leases, net Total assets LIABILITIES AND CAPITAL Liabilities and Equity [Abstract] Liabilities: Liabilities [Abstract] Mortgage notes payable Senior unsecured notes Convertible Debt Unsecured term loan facility Unsecured Debt Accounts payable and accrued expenses Acquired below market leases, net Deferred revenue and other liabilities Deferred Revenue and Other Liabilities Deferred Revenue and Other Liabilities Tenants’ security deposits Security Deposit Liability Total liabilities Liabilities Commitments and contingencies Commitments and Contingencies Capital: Partners' Capital [Abstract] Private perpetual preferred units, $16.62 per unit liquidation preference, 1,560,360 issued and outstanding in 2016 and 2015, respectively Private Perpetual Preferred Units, Issued, Value Private Perpetual Preferred Units, Issued, Value ESRT partners' capital (2,990,931 and 2,675,740 general partner operating partnership units and 152,849,546 and 117,347,639 limited partner operating partnership units outstanding at December 31, 2016 and 2015, respectively) General & Limited Partners Capital Account General & Limited Partners Capital Account Limited partner operating partnership units Limited Partners' Capital Account Total capital Total liabilities and capital Liabilities and Equity Description of Business and Organization Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Prepayment premium, period one Debt Instrument, Prepayment Premium, Period One Debt Instrument, Prepayment Premium, Period One Prepayment premium, period two Debt Instrument, Prepayment Premium, Period Two Debt Instrument, Prepayment Premium, Period Two Building Service 32BJ [Member] Building Service 32BJ [Member] Building Service 32BJ [Member] Plan contributions Multiemployer Plans, Plan Contributions Number of properties acquired Number Of Properties Acquired Number Of Properties Acquired Convertible Debt, Covenant Scenario [Axis] Convertible Debt, Covenant Scenario [Axis] Convertible Debt, Covenant Scenario [Axis] Convertible Debt, Covenants [Domain] Convertible Debt, Covenants [Domain] [Domain] for Convertible Debt, Covenants [Axis] Covenant scenario one [Member] Covenant Scenario One [Member] Covenant Scenario One [Member] Covenant scenario two [Member] Covenant Scenario Two [Member] Covenant Scenario Two [Member] Series A, Series B, and Series C Senior Unsecured Notes [Member] Series A, Series B, and Series C Senior Unsecured Notes [Member] Series A, Series B, and Series C Senior Unsecured Notes [Member] Face amount Debt Instrument, Face Amount Stated interest rate Threshold percentage of stock price trigger Debt Instrument, Convertible, Threshold Percentage of Stock Price Trigger Threshold trading days Debt Instrument, Convertible, Threshold Trading Days Threshold consecutive trading days Debt Instrument, Convertible, Threshold Consecutive Trading Days Threshold consecutive business days Debt Instrument, Convertible, Threshold Consecutive Business Days Debt Instrument, Convertible, Threshold Consecutive Business Days Conversion price (USD per share) Debt Instrument, Convertible, Conversion Price Debt, conversion ratio Debt Instrument, Convertible, Conversion Ratio Percentage of principal amount redeemed Debt Instrument, Redemption Price, Percentage of Principal Amount Redeemed Effective interest rate Embedded conversion option Adjustments To Additional Paid In Capital Convertible Debt With Conversion Feature, Gross Adjustments To Additional Paid In Capital Convertible Debt With Conversion Feature, Gross Remaining discount amortization period Debt Instrument, Convertible, Remaining Discount Amortization Period Unamortized discount Debt Instrument, Unamortized Discount Underwriting expense Payments for Underwriting Expense Deferred finance costs Debt Issuance Costs, Noncurrent, Net Embedded conversion feature, embedded Adjustments To Additional Paid In Capital Convertible Debt With Conversion Feature, Reduction Adjustments To Additional Paid In Capital Convertible Debt With Conversion Feature, Reduction Interest expense on note Interest Expense, Debt Interest expense Accretion of debt discount Amortization of Debt Discount (Premium) Amortization of deferred financing costs Schedule of Accounts Payable and Accrued Expenses Schedule of Accounts Payable and Accrued Liabilities [Table Text Block] Restricted Stock and LTIP Unit Activity [Roll Forward] Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Unvested balance, beginning balance (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number Vested (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period Granted (in shares) Forfeited (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period Unvested balance, ending balance (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Unvested balance, weighted average grant price, beginning balance (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value Vested (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Granted (in dollars per share) Forfeited (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Unvested balance, weighted average grant price, ending balance (in dollars per share) Income Statement [Abstract] Revenues: Revenues [Abstract] Operating expenses: Operating Expenses [Abstract] General and administrative expenses Acquisition expenses Income tax expense Net income attributable to common unitholders Total weighted average units: Weighted Average Number of Shares Outstanding, Basic [Abstract] Basic (in units) Weighted Average Number of Shares Outstanding, Basic Diluted (in units) Net income per unit: Earnings Per Share [Abstract] Basic net income per unit (in dollars per unit) Earnings Per Share, Basic Diluted net income per unit (in dollars per unit) Earnings Per Share, Diluted