Derivative Instruments and Hedging Activities Disclosure [Abstract] Summary of Interest Rate Swap Agreement Schedule of Derivative Instruments [Table Text Block] Summary of Impact of Interest Rate Swaps on Consolidated Financial Statements Schedule of Derivative Instruments, Effect on Other Comprehensive Income (Loss) [Table Text Block] Offsetting Assets Offsetting Assets [Table Text Block] Offsetting Liabilities Offsetting Liabilities [Table Text Block] Equity [Abstract] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Award Type [Axis] Award Type [Axis] Equity Award [Domain] Equity Award [Domain] Restricted Common Stock Restricted Stock [Member] LTIP Units LTIP Units [Member] LTIP Units Performance Units Performance Shares [Member] Equity Components [Axis] Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Common Stock Common Stock [Member] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Balance at January 1, 2018 (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number Granted (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period Forfeited (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period Vested (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period June 30, 2018 (in shares) Shares tendered in accordance with terms of plan to satisfy tax withholding (in shares) Shares Paid for Tax Withholding for Share Based Compensation Earnings Per Share [Abstract] Computation of Basic and Diluted Earnings Per Share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Fair Value Disclosures [Abstract] Fair Value By Balance Sheet Grouping [Table] Fair Value, by Balance Sheet Grouping [Table] Fair Value By Fair Value Hierarchy Level Fair Value, Hierarchy [Axis] Fair Value Measurements Fair Value Hierarchy Fair Value Hierarchy [Domain] Significant Unobservable Inputs (Level 3) Fair Value, Inputs, Level 3 [Member] Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Notes payable, fair value Long-term Debt, Fair Value Carrying value Long-term Debt Subsequent Events [Abstract] Subsequent Event [Table] Subsequent Event [Table] Disposal Group Name [Axis] Disposal Group Name [Axis] Disposal Group Name [Domain] Disposal Group Name [Domain] 6770 Central Ave, Unit B, Riverside, California 6770 Central Ave, Unit B, Riverside, California [Member] 6770 Central Ave, Unit B, Riverside, California [Member] Business Acquisition [Axis] Business Acquisition [Axis] Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree [Domain] 10747 Norwalk Boulevard [Member] 10747 Norwalk Boulevard [Member] 10747 Norwalk Boulevard [Member] 29003 Avenue Sherman [Member] 29003 Avenue Sherman [Member] 29003 Avenue Sherman [Member] Subsequent Event Type [Axis] Subsequent Event Type [Axis] Subsequent Event Type [Domain] Subsequent Event Type [Domain] Subsequent Event Subsequent Event [Member] Class of Stock [Axis] Class of Stock [Axis] Class of Stock [Domain] Class of Stock [Domain] Operating Partnership Units Operating Partnership Units [Member] Operating Partnership Units Series A Preferred Stock Series A Preferred Stock [Member] Series B Preferred Stock Series B Preferred Stock [Member] Subsequent Event [Line Items] Subsequent Event [Line Items] Acquisition Purchase Price Acquisition Purchase Price The contractual price of a business combination or asset acquisition Rentable square feet Net Rentable Area Cass dividend (in dollars per share) Dividends Payable, Amount Per Share Dividend percentage Preferred Stock, Dividend Rate, Percentage Statement of Cash Flows [Abstract] Capitalized interest, net Interest Paid, Capitalized Title of Individual [Axis] Title of Individual [Axis] Relationship to Entity [Domain] Relationship to Entity [Domain] Executive Officer Executive Officer [Member] Plan Name [Axis] Plan Name [Axis] Plan Name [Domain] Plan Name [Domain] Amended 2013 Incentive Award Plan Two Thousand Thirteen Incentive Award Plan [Member] Two thousand thirteen incentive award plan. Vesting Vesting [Axis] Vesting Vesting [Domain] Absolute TSR Vesting Percentage Range Four [Member] Absolute TSR Vesting Percentage Range Four [Member] Absolute TSR Vesting Percentage Range Four July 1, 2018 - December 31, 2018 Share Based Compensation, Awards Vesting, Remainder of Fiscal Year [Member] Share Based Compensation, Awards Vesting, Remainder of Fiscal Year [Member] 2019 Share Based Compensation, Awards Vesting, Year 2 [Member] Share Based Compensation, Awards Vesting, Year 2 [Member] 2020 Share Based Compensation, Awards Vesting, Year 3 [Member] Share Based Compensation, Awards Vesting, Year 3 [Member] 2021 Share Based Compensation, Awards Vesting, Year 4 [Member] Share Based Compensation, Awards Vesting, Year 4 [Member] 2022 Share Based Compensation, Awards Vesting, Year 5 [Member] Share Based Compensation, Awards Vesting, Year 5 [Member] Relative TSR Vesting Percentage Range Four [Member] Relative TSR Vesting Percentage Range Four [Member] Relative TSR Vesting Percentage Range Four Non-vested shares TSR Target Percentage TSR Maximum Percentage TSR percentage to be achieved to earn max performance units. Performance period Share Based Compensation Arrangement By Share Based Payment Award, Performance Period Share Based Compensation Arrangement By Share Based Payment Award, Performance Period of Award TSR performance percentage relative to peer group, maximum Total Shareholder Return, Performance Percentage Relative To Peer Group, Maximum Total Shareholder Return, Performance Percentage Relative To Peer Group, Maximum Share Based Compensation Arrangement By Share Based Payment Award, Equity Instruments Other Than Options, Designated Absolute Total Shareholder Return Base Units, Company TSR Percentage Share Based Compensation Arrangement By Share Based Payment Award, Equity Instruments Other Than Options, Designated Absolute Total Shareholder Return Base Units, Company TSR Percentage Share Based Compensation Arrangement By Share Based Payment Award, Equity Instruments Other Than Options, Designated Absolute Total Shareholder Return Base Units, Company TSR Percentage Share Based Compensation Arrangement By Share Based Payment Award, Equity Instruments Other Than Options, Designated Absolute Total Shareholder Return Base Units, Peer Group Relative Performance Share Based Compensation Arrangement By Share Based Payment Award, Equity Instruments Other Than Options, Designated Absolute Total Shareholder Return Base Units, Peer Group Relative Performance Share Based Compensation Arrangement By Share Based Payment Award, Equity Instruments Other Than Options, Designated Absolute Total Shareholder Return Base Units, Peer Group Relative Performance Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Table] Fair Value Measurements, Recurring and Nonrecurring [Table] Significant Other Observable Inputs (Level 2) Fair Value, Inputs, Level 2 [Member] Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Interest rate swap asset Interest Rate Derivative Assets, at Fair Value Interest Rate Swap Liability Interest Rate Derivative Liabilities, at Fair Value Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income AOCI Attributable to Parent [Member] Accumulated Other Comprehensive Income (Loss) [Line Items] Accumulated Other Comprehensive Income (Loss) [Line Items] AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward] AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward] Beginning Balance Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Other comprehensive income (loss) before reclassifications Other Comprehensive Income (Loss), before Reclassifications, Net of Tax Amounts reclassified from accumulated other comprehensive income to interest expense Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax Other comprehensive income (loss): cash flow hedge adjustment Other Comprehensive Income (Loss), Net of Tax Less other comprehensive (income) loss attributable to noncontrolling interests Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Noncontrolling Interest Other comprehensive income (loss) attributable to common stockholders Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Ending Balance Investments, All Other Investments [Abstract] Schedule of Business Acquisitions, by Acquisition [Table] Schedule of Business Acquisitions, by Acquisition [Table] Property Plant And Equipment By Type Property, Plant and Equipment, Type [Axis] Property Plant And Equipment Type Property, Plant and Equipment, Type [Domain] Construction in progress Construction in Progress [Member] Tax Treatment of Acquisition [Axis] Tax Treatment of Acquisition [Axis] Tax Treatment of Acquisition [Axis] Tax Treatment of Acquisition [Domain] Tax Treatment of Acquisition [Domain] Tax Treatment of Acquisition Like Kind Exchange, Qualified Under IRS Section 1031 Like Kind Exchange, Qualified Under IRS Section 1031 [Member] Like Kind Exchange, Qualified Under IRS Section 1031 [Member] 13971 Norton Avenue 13971 Norton Avenue [Member] 13971 Norton Avenue [Member] Ontario Airport Commerce Center Ontario Airport Commerce Center [Member] Ontario Airport Commerce Center [Member] 1900 Proforma Avenue And 1910-1920 Archibald Avenue 1900 Proforma Avenue And 1910-1920 Archibald Avenue [Member] 1900 Proforma Avenue And 1910-1920 Archibald Avenue [Member] 700 Allen Avenue and 1851 Flower Street 700 Allen Avenue and 1851 and 1830 Flower Street [Member] 700 Allen Avenue and 1851 and 1830 Flower Street [Member] 16010 Shoemaker Avenue 16010 Shoemaker Avenue [Member] 16010 Shoemaker Avenue [Member] 4039 Calle Platino 4039 Calle Platino [Member] 4039 Calle Platino [Member] 200-220 South Grand Avenue South Grand Ave [Member] 200-220 South Grand Ave. 851 Lawrence Drive, Thousand Oaks, California 851 Lawrence Drive, Thousand Oaks, California [Member] 851 Lawrence Drive, Thousand Oaks, California [Member] 1581 Main Street, Orange County, California 1581 Main Street, Orange County, California [Member] 1581 Main Street, Orange County, California [Member] 1580 Carson Street, Long Beach, California 1580 Carson Street, Long Beach, California [Member] 1580 Carson Street, Long Beach, California [Member] 660 & 664 Twin Oaks, San Marcos, California 660 & 664 Twin Oaks, San Marcos, California [Member] 660 & 664 Twin Oaks, San Marcos, California [Member] 1190 Stanford Court 1190 Stanford Court [Member] 1190 Stanford Court [Member] 5300 Sheila Street 5300 Sheila Street [Member] 5300 Sheila Street [Member] 15777 Gateway Circle 15777 Gateway Circle [Member] 15777 Gateway Circle [Member] 1998 Surveyor Avenue 1998 Surveyor Avenue [Member] 1998 Surveyor Avenue [Member] 3100 Fujita Street 3100 Fujita Street [Member] 3100 Fujita Street [Member] 4416 Azusa Canyon Road 4416 Azusa Canyon Road [Member] 4416 Azusa Canyon Road [Member] 1420 Mckinley Avenue 1420 Mckinley Avenue [Member] 1420 Mckinley Avenue [Member] 8900-8980 Benson Avenue and 5637 Arrow Highway 8900-8980 Benson Ave and 5637 Arrow Highway [Member] 8900-8980 Benson Ave and 5637 Arrow Highway [Member] 12154 Montague Street 12154 Montague Street [Member] 12154 Montague Street [Member] Business Acquisition [Line Items] Business Acquisition [Line Items] Date of Acquisition Business Acquisition, Date of Acquisition Agreement Rentable Square Feet Number of Buildings Number Of Buildings Acquired Number of buildings acquired. Purchase Price Assumed Construction Contract Assumed Construction Contract The remaining costs to be incurred on fixed-price construction contract. Payments to acquire real estate Payments to Acquire Real Estate Accounting Policies [Abstract] Summary Of Significant Accounting Policies [Table] Summary Of Significant Accounting Policies [Table] Summary of significant accounting policies. Geographical [Axis] Geographical [Axis] Geographical [Domain] Geographical [Domain] 700 Allen Avenue Range Range [Axis] Range Member Range [Domain] Minimum Minimum [Member] Maximum Maximum [Member] Construction Employees Construction Employees [Member] Construction Employees Leasing Employees Leasing Employees [Member] Leasing Employees Building Building [Member] Site Improvements Land Improvements [Member] Summary Of Significant Accounting Policies [Line Items] Summary Of Significant Accounting Policies [Line Items] Summary of significant accounting policies. Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Restricted cash Restricted Cash and Cash Equivalents Cash, cash equivalents and restricted cash Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Fair value inputs, discount rate Fair Value Inputs, Discount Rate Fair value inputs, capitalization rate Fair Value Inputs, Cap Rate Estimated average lease-up period Fair Value Estimate, Property Average Lease Up Period Fair Value Estimate, Property Average Lease Up Period Interest capitalized Real estate taxes and insurance costs capitalized Real Estate Taxes And Insurance Costs Capitalized Real estate taxes And insurance costs capitalized as property costs during periods in which activities necessary to get a property ready for its intended use are in progress. Compensation costs capitalized Compensation Costs Capitalized Represents compensation costs capitalized during the period (including salary, bonus and equity-based compensation) for employees involved with construction activities necessary to get a property ready for its intended use and employees involved in the successful origination of leases. Estimated remaining life Property, Plant and Equipment, Useful Life REIT annual taxable income distribution requirement percentage Reit Taxable Income Distribution Requirement Percentage Reit taxable income distribution requirement percentage. Income tax provision Income Tax Expense (Benefit) Rents and other receivables Accounts Receivable, Gross Allowance for doubtful accounts Allowance for Doubtful Accounts Receivable Rents and other receivables, net Accounts Receivable, Net Deferred rent receivable Deferred Rent Receivables, Gross The cumulative difference between the rental payments required by a lease agreement and the rental income or expense recognized on a straight-line basis, or other systematic and rational basis more representative of the time pattern in which use or benefit is granted or derived from the leased property, expected to be recognized in income or expense over the term of the leased property, by the lessor or lessee, respectively. Allowance for doubtful accounts Deferred Rent Receivable, Allowance For Doubtful Accounts Deferred Rent Receivable, Allowance For Doubtful Accounts Deferred rent receivable, net Deferred Rent Receivables, Net Provision for doubtful accounts Provision For Doubtful Accounts, Including Straight Line Rent Provision For Doubtful Accounts, Including Straight Line Rent Goodwill and Intangible Assets Disclosure [Abstract] Schedule Of Acquired Finite Lived Intangible Asset By Major Class [Table] Schedule of Acquired Finite-Lived Intangible Asset by Major Class [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] In-place lease intangibles Leases, Acquired-in-Place [Member] Above Market Leases Above Market Leases [Member] Below Market Tenant Leases Below Market Operating Leases [Member] Below market operating leases. Above-market ground lease Above Market Ground Lease [Member] Above market ground lease. Acquired Finite Lived Intangible Assets [Line Items] Acquired Finite-Lived Intangible Assets [Line Items] Acquired lease intangible assets, gross Finite-Lived Intangible Assets, Gross Accumulated amortization Finite-Lived Intangible Assets, Accumulated Amortization Acquired lease intangible assets, net Finite-Lived Intangible Assets, Net Acquired lease intangible liabilities, gross Finite Lived Intangible Liability Off Market Lease Unfavorable Gross Finite lived intangible liability off market lease unfavorable gross. Accumulated accretion Finite Lived Intangible Assets Accumulated Accretion Finite lived intangible assets accumulated amortization. Acquired lease intangible liabilities, net Off-market Lease, Unfavorable Earnings Per Share Earnings Per Share [Text Block] Commitments and Contingencies Disclosure [Abstract] Commitments And Contingencies [Table] Commitments And Contingencies [Table] Commitments and contingencies. Lease Arrangement Type Lease Arrangement, Type [Axis] Lease Arrangement Type Lease Arrangement, Type [Domain] Ground Lease Ground Lease [Member] Ground lease. Office Leases Office Lease [Member] Office lease. Concentration Risk By Type Concentration Risk Type [Axis] Concentration Risk Type Concentration Risk Type [Domain] Customer Concentration Risk Customer Concentration Risk [Member] Concentration Risk By Benchmark Concentration Risk Benchmark [Axis] Concentration Risk Benchmark Concentration Risk Benchmark [Domain] Base Rent Base Rent [Member] Base rent. Total Rental Revenues Total Rental Revenues [Member] Total Rental Revenues [Member] Commitments And Contingencies [Line Items] Commitments And Contingencies [Line Items] Commitments and contingencies. Estimated remediation, processing and oversight costs Estimated Remediation Processing And Oversight Costs Estimated remediation, processing and oversight costs. Holdback Escrow total funded Holdback Escrow Aggregate Funded Total amount placed in escrow to pay for estimated remediation costs subject to holdback agreement. Holdback Escrow seller funded Holdback Escrow Seller Funded Amount placed in escrow account by seller to pay for estimated remediation costs subject to Holdback Agreement. Holdback Escrow buyer funded Holdback Escrow Buyer Funded Amount placed in escrow account by Company to pay for estimated remediation costs subject to holdback agreement. Maximum seller liability remediation costs Maximum Seller Liability Remediation Costs Maximum seller liability remediation costs. Contingent liability Accrual for Environmental Loss Contingencies Indemnification asset Recorded Third-Party Environmental Recoveries Receivable Ground lease, expiration date Lease Expiration Date Rent expense Operating Leases, Rent Expense Other commitments Other Commitment Cash, FDIC Insured Amount Cash, FDIC Insured Amount Number of major tenants Concentration Risk, Number of Major Customers Concentration Risk, Number of Major Customers Concentration risk, percentage Concentration Risk, Percentage Leases, Operating [Abstract] Future Minimum Base Rent Under Non-cancelable Operating Leases Future Minimum Base Rent Under Non Cancelable Operating Leases Table [Text Block] Tabular disclosure of future minimum base rent under non-cancelable operating leases. Income Statement [Abstract] RENTAL REVENUES Real Estate Revenue, Net [Abstract] Rental income Operating Leases, Income Statement, Lease Revenue Tenant reimbursements Tenant Reimbursements Other income Other Real Estate Revenue TOTAL RENTAL REVENUES Real Estate Revenue, Net Management, leasing and development services Management Fees Revenue Interest income Interest Income, Operating TOTAL REVENUES Revenues OPERATING EXPENSES Operating Expenses [Abstract] Property expenses Direct Costs of Leased and Rented Property or Equipment General and administrative General and Administrative Expense Depreciation and amortization Depreciation, Depletion and Amortization, Nonproduction TOTAL OPERATING EXPENSES Operating Expenses OTHER EXPENSES Nonoperating Income (Expense) [Abstract] Acquisition expenses Acquisition Expenses Costs incurred to effect an acquisition transaction which have been expensed during the period. Such costs include advisory, legal, due diligence, and other professional fees. Interest expense Interest Expense TOTAL OTHER EXPENSES Other Expenses TOTAL EXPENSES Other Cost and Expense, Operating Equity in income from unconsolidated real estate entities Income (Loss) from Equity Method Investments Loss on extinguishment of debt Gain (Loss) on Extinguishment of Debt Gains on sale of real estate Gains (Losses) on Sales of Investment Real Estate NET INCOME Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Less: net income attributable to noncontrolling interest Net Income (Loss) Attributable to Noncontrolling Interest NET INCOME ATTRIBUTABLE TO REXFORD INDUSTRIAL REALTY, INC. Net Income (Loss) Attributable to Parent Less: preferred stock dividends Preferred Stock Dividends, Income Statement Impact Less: earnings allocated to participating securities Undistributed Earnings (Loss) Allocated to Participating Securities, Basic NET INCOME ATTRIBUTABLE TO COMMON STOCKHOLDERS Net Income (Loss) Available to Common Stockholders, Basic Net income attributable to common stockholders - basic (in dollars per share) Earnings Per Share, Basic Net income attributable to common stockholders - diluted (in dollars per share) Earnings Per Share, Diluted Weighted average shares of common stock outstanding - basic (in shares) Weighted Average Number of Shares Outstanding, Basic Weighted average shares of common stock outstanding - diluted (in shares) Weighted Average Number of Shares Outstanding, Diluted Dividends declared per common share (in dollars per share) Common Stock, Dividends, Per Share, Declared Related Party Transactions [Abstract] Schedule Of Related Party Transactions By Related Party [Table] Schedule of Related Party Transactions, by Related Party [Table] Name of Property [Axis] Name of Property [Axis] Name of Property [Domain] Name of Property [Domain] Related Party Transactions By Related Party Related Party [Axis] Related Party Related Party [Domain] Chief Executive Officer Chief Executive Officer [Member] Related Party Transaction [Line Items] Related Party Transaction [Line Items] Revenue from management and leasing services Revenue from Related Parties Disposition Sales Price Disposition Sales Price Contract sales price for dispositions of real estate Operating Leases, Future Minimum Payments Receivable [Abstract] Operating Leases, Future Minimum Payments Receivable [Abstract] 2019 Operating Leases, Future Minimum Payments Receivable, Current 2020 Operating Leases, Future Minimum Payments Receivable, in Two Years 2021 Operating Leases, Future Minimum Payments Receivable, in Three Years 2022 Operating Leases, Future Minimum Payments Receivable, in Four Years 2023 Operating Leases, Future Minimum Payments Receivable, in Five Years Thereafter Operating Leases, Future Minimum Payments Receivable, Thereafter Total Operating Leases, Future Minimum Payments Receivable Fair Value Measurements Fair Value Disclosures [Text Block] Schedule of Cash and Cash Equivalents and Restricted Cash Schedule of Cash and Cash Equivalents [Table Text Block] Schedule of Accounts, Notes, Loans and Financing Receivable Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] Summary of Acquired Wholly Owned Property Acquisitions Schedule of Asset Acquisitions By Acquisition [Table Text Block] Schedule of Asset Acquisitions By Acquisition [Table Text Block] Summary of Fair Value of Amounts Recognized Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block] Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Subsequent Events Subsequent Events [Text Block] Intangible Assets Intangible Assets Disclosure [Text Block] Statement of Stockholders' Equity [Abstract] Statement [Table] Statement [Table] Total Stockholders’ Equity Parent [Member] Preferred Stock Preferred Stock [Member] Additional Paid-in Capital Additional Paid-in Capital [Member] Cumulative Distributions in Excess of Earnings Accumulated Distributions in Excess of Net Income [Member] Noncontrolling Interests Noncontrolling Interest [Member] Statement [Line Items] Statement [Line Items] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Beginning Balance (in shares) Common Stock, Shares, Outstanding Issuance of common stock (in shares) Stock Issued During Period, Shares, New Issues Issuance of common stock Stock Issued During Period, Value, New Issues Offering costs Offering Costs Specific incremental costs directly attributable to offering of securities. Share-based compensation (in shares) Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures Share-based compensation Stock Issued During Period, Value, Share-based Compensation, Net of Forfeitures Shares acquired to satisfy employee tax withholding requirements on vesting restricted stock (in shares) Shares acquired to satisfy employee tax withholding requirements on vesting restricted stock Adjustments Related to Tax Withholding for Share-based Compensation Conversion of units to common stock (in shares) Stock Issued During Period, Shares, Conversion of Units Conversion of units to common stock Stock Issued During Period, Value, Conversion of Units Net income Other comprehensive income Preferred stock dividends Dividends, Preferred Stock Common stock dividends Dividends Distributions Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders Ending Balance (in shares) Schedule of Unvested Restricted Stock Activity Nonvested Restricted Stock Shares Activity [Table Text Block] Vesting Schedule of the Unvested Shares of Restricted Stock Outstanding Restricted Stock Awards Shares Non Vested Awards By Expected Vesting Period Table [Text Block] Tabular disclosure of the number of non-vested restricted stock awards outstanding by the period expected to vest at the date of the latest statement of financial position. Shareholders' Equity and Share-based Payments Shareholders' Equity and Share-based Payments [Text Block] Summary of the Components of Changes in Accumulated Other Comprehensive Loss Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Document And Entity Information [Abstract] Document and entity information. Document Type Document Type Amendment Flag Amendment Flag Document Period End Date Document Period End Date Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Trading Symbol Trading Symbol Entity Registrant Name Entity Registrant Name Entity Central Index Key Entity Central Index Key Current Fiscal Year End Date Current Fiscal Year End Date Entity Filer Category Entity Filer Category Entity Common Stock, Shares Outstanding (in shares) Entity Common Stock, Shares Outstanding Related Party Transactions Related Party Transactions Disclosure [Text Block] Statement of Financial Position [Abstract] 5.875% series A cumulative redeemable preferred stock, 3,600,000 shares outstanding at June 30, 2018 and December 31, 2017 ($90,000 liquidation preference) 5.875% series B cumulative redeemable preferred stock, 3,000,000 shares outstanding at June 30, 2018 and December 31, 2017 ($75,000 liquidation preference) ASSETS Assets [Abstract] Land Land Buildings and improvements Investment Building and Building Improvements Tenant improvements Tenant Improvements Furniture, fixtures and equipment Fixtures and Equipment, Gross Construction in progress Development in Process Total real estate held for investment Real Estate Investment Property, at Cost Accumulated depreciation Real Estate Investment Property, Accumulated Depreciation Investments in real estate, net Real Estate Investment Property, Net Restricted cash Rents and other receivables, net Deferred rent receivable, net Deferred leasing costs, net Deferred Costs, Leasing, Net Deferred loan costs, net Debt Issuance Costs, Net Acquired lease intangible assets, net Acquired indefinite-lived intangible Other Indefinite-lived Intangible Assets Other assets Other Assets Acquisition related deposits Deposits Assets Assets associated with real estate held for sale Disposal Group, Including Discontinued Operation, Assets Total Assets Assets LIABILITIES & EQUITY Liabilities and Equity [Abstract] Liabilities Liabilities [Abstract] Notes payable Interest rate swap liability Accounts payable, accrued expenses and other liabilities Accounts Payable and Accrued Liabilities Dividends payable Dividends Payable Acquired lease intangible liabilities, net Tenant security deposits Security Deposit Liability Prepaid rents Advance Rent Liabilities associated with real estate held for sale Disposal Group, Including Discontinued Operation, Liabilities Total Liabilities Liabilities Equity Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] Rexford Industrial Realty, Inc. stockholders’ equity Stockholders' Equity Attributable to Parent [Abstract] Preferred stock, $0.01 par value per share, 10,000,000 shares authorized, Preferred Stock, Value, Issued Common Stock, $0.01 par value per share, 490,000,000 authorized and 91,062,065 and 78,495,882 shares outstanding at June 30, 2018 and December 31, 2017, respectively Common Stock, Value, Issued Additional paid in capital Additional Paid in Capital, Common Stock Cumulative distributions in excess of earnings Accumulated Distributions in Excess of Net Income Accumulated other comprehensive income Accumulated Other Comprehensive Income (Loss), Net of Tax Total stockholders’ equity Stockholders' Equity Attributable to Parent Noncontrolling interests Stockholders' Equity Attributable to Noncontrolling Interest Total Equity Total Liabilities and Equity Liabilities and Equity Amended and Restated Two Thousand Thirteen Incentive Award Plan [Member] Amended and Restated Two Thousand Thirteen Incentive Award Plan [Member] Amended And Restated Two Thousand Thirteen Incentive Award Plan Shares that may be issued (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized Common stock, shares reserved for future issuance Deferred Compensation Arrangement with Individual, Common Stock Reserved for Future Issuance Unvested Performance Unit Distribution Sharing Percentage Unvested Performance Unit Distribution Sharing Percentage Unvested performance unit distribution sharing percentage. Equity Stockholders' Equity Note Disclosure [Text Block] Organization, Consolidation and Presentation of Financial Statements [Abstract] Schedule Of Real Estate Properties [Table] Schedule of Real Estate Properties [Table] Real Estate Properties [Line Items] Real Estate Properties [Line Items] Number of real estate properties Number of Real Estate Properties Area of real estate property (square feet) Area of Real Estate Property Number of real estate properties additionally managed Number Of Real Estate Properties Additionally Managed Number of real estate properties additionally managed. Area of real estate property additionally managed Area Of Real Estate Property Additionally Managed Area of real estate property managed Debt Disclosure [Abstract] Summary of Components and Significant Terms of Our Indebtedness Schedule of Debt [Table Text Block] Summary of Aggregate Future Minimum Payments of Debt Schedule of Maturities of Long-term Debt [Table Text Block] Schedule of Stock by Class [Table] Schedule of Stock by Class [Table] Consolidated Entities [Axis] Consolidated Entities [Axis] Consolidated Entities [Domain] Consolidated Entities [Domain] Partnership Interest Partnership Interest [Member] Shareholders' Equity Class [Axis] Shareholders' Equity Class [Axis] Fair Value by Shareholders' Equity Class [Domain] Fair Value by Shareholders' Equity Class [Domain] Equity Shareholders' Equity [Member] Noncontrolling Interest [Axis] Noncontrolling Interest [Axis] Noncontrolling Interest [Axis] Noncontrolling Interest [Domain] Noncontrolling Interest [Domain] [Domain] for Noncontrolling Interest [Axis] Vested LTIP Units Vested LTIP Units [Member] Vested LTIP Units [Member] Class of Stock [Line Items] Class of Stock [Line Items] Operating partnership units outstanding Limited Partners' Capital Account, Units Outstanding Noncontrolling interest percentage ownership in Operating Partnership Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners Discontinued Operations and Disposal Groups [Abstract] Summary of Disposed Properties Dispositions Table [Table Text Block] Summary information related to properties sold during the reported period, including address, location, square footage, date of disposal, sales price and gain (loss) recorded. Disclosure of Long Lived Assets Held-for-sale [Table Text Block] Disclosure of Long Lived Assets Held-for-sale [Table Text Block] Sale of Stock [Axis] Sale of Stock [Axis] Sale of Stock [Domain] Sale of Stock [Domain] At-The-Market Equity Offering Program $300M At-The-Market Equity Offering Program $300M [Member] At-The-Market Equity Offering Program $300M At The Market Equity Offering Program, 400 And 300 Million [Member] At The Market Equity Offering Program, 400 And 300 Million [Member] At The Market Equity Offering Program, 400 And 300 Million [Member] At-The-Market Equity Offering Program $400M At-The-Market Equity Offering Program $400M [Member] At-The-Market Equity Offering Program $400M [Member] Maximum aggregate offering amount At-The-Market Aggregate Offering Amount The aggregate value of shares that may be sold from time to time in "at the market" offerings. Common stock share price (in dollars per share) Shares Issued, Price Per Share Gross proceeds from the issuance of common stock Gross Proceeds From Issuance Of Common Stock Gross proceeds from issuance of common stock before the effect of offering costs Net proceeds from issuance of common stock Proceeds From Issuance Of Common Stock, Net Proceeds from the issuance of common stock net of the sales agents' fee Shares available under ATM (in shares) Common Stock, Value of Shares Available under ATM Common Stock, Value of Shares Available under At The Market Equity Offering Program Numerator: Net Income (Loss) Attributable to Parent [Abstract] Less: Preferred stock dividends Less: Net income attributable to participating securities Denominator: Weighted Average Number of Shares Outstanding, Diluted [Abstract] Effect of dilutive securities - performance units (in shares) Incremental Common Shares Attributable to Dilutive Effect of Contingently Issuable Shares Weighted average shares of common stock outstanding - diluted (in shares) Earnings per share — Basic Earnings Per Share, Basic [Abstract] Earnings per share — Diluted Earnings Per Share, Diluted [Abstract] Net below market tenant leases Net Above Below Market Tenant Leases [Member] Net above (below) market tenant leases. Amortization of in-place lease intangibles Amortization of Intangible Assets Amortization of (below) above market lease intangibles, net Amortization of above and below Market Leases Accretion of above-market ground lease intangibles Accretion Of Above Market Ground Lease Intangible Accretion of above market ground lease intangible. Debt Instrument [Table] Schedule of Long-term Debt Instruments [Table] Debt Instrument [Axis] Debt Instrument [Axis] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] $60M Term Loan 60 Million Term Loan Facility [Member] Term loan facility. $100M Term Loan Facility 100 Million Term Loan [Member] 100 Million Term Loan $225M Term Loan Facility 225 Million Term Loan Facility [Member] 225 Million Term Loan Facility $100 Million Notes $100 Million Notes [Member] $100 Million Notes [Member] $125 Million Notes $125 Million Notes [Member] $125 Million Notes [Member] $150 Million Term Loan Facility 150 Million Term Loan Facility [Member] 150 Million Term Loan Facility Real Estate Properties Real Estate Property Ownership [Axis] Real Estate Properties Real Estate Properties [Domain] Gilbert/La Palma Gilbert La Palma [Member] Gilbert/La Palma. Credit Facility Credit Facility [Axis] Credit Facility Credit Facility [Domain] Revolving Credit Facility Revolving Credit Facility [Member] Term Loan Term Loan [Member] Term loan. Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] Fixed Rate Debt Fixed Rate Debt [Member] Fixed rate debt. Line of Credit Line of Credit [Member] Senior notes Senior Notes [Member] Variable Rate [Axis] Variable Rate [Axis] Variable Rate [Domain] Variable Rate [Domain] LIBOR London Interbank Offered Rate (LIBOR) [Member] Debt Instrument [Line Items] Debt Instrument [Line Items] Principal amount Long-term Debt, Gross Less: unamortized discount and deferred loan costs Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net Contractual Maturity Date Debt Instrument, Maturity Date Stated Interest Rate Debt Instrument, Interest Rate, Stated Percentage Description of variable rate basis Debt Instrument, Description of Variable Rate Basis Basis spread on variable rate Debt Instrument, Basis Spread on Variable Rate Effective Interest Rate Debt Instrument, Interest Rate, Effective Percentage Number of properties securing loan Number Of Properties Securing Loan Number of properties securing loan. Number of derivative instruments Derivative, Number of Instruments Held Number of extensions Number Of Additional Extension Periods Number of additional extension periods. Extension period Debt Instrument Term Extension Period Debt instrument term extension period. Amortization period Amortization Table Period Amortization table period. Commitment fee percentage Line of Credit Facility, Commitment Fee Percentage Preferred stock, par value (in dollars per share) Preferred Stock, Par or Stated Value Per Share Preferred stock, shares authorized (in shares) Preferred Stock, Shares Authorized Preferred Stock, Dividend Rate, Percentage Preferred stock, shares outstanding (in shares) Preferred Stock, Shares Outstanding Preferred Stock, Liquidation Preference, Value Preferred Stock, Liquidation Preference, Value Common stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Common stock, shares authorized (in shares) Common Stock, Shares Authorized Common stock, shares outstanding (in shares) Assets Measures at Fair Vale on a Recurring Basis by Level within Fair Value Hierarchy Fair Value, Liabilities Measured on Recurring Basis [Table Text Block] Carrying Value and Estimated Fair Value of Notes Payable Fair Value, by Balance Sheet Grouping [Table Text Block] Schedule Of Operating Leased Assets [Table] Schedule of Operating Leased Assets [Table] Operating Leased Assets [Line Items] Operating Leased Assets [Line Items] July 1, 2018 - December 31, 2018 Operating Leases, Future Minimum Payments, Remainder of Fiscal Year 2019 Operating Leases, Future Minimum Payments, Due in Two Years 2020 Operating Leases, Future Minimum Payments, Due in Three Years 2021 Operating Leases, Future Minimum Payments, Due in Four Years 2022 Operating Leases, Future Minimum Payments, Due in Five Years Thereafter Operating Leases, Future Minimum Payments, Due Thereafter Total Operating Leases, Future Minimum Payments Due Carrying value Schedule of Long Lived Assets Held-for-sale [Table] Schedule of Long Lived Assets Held-for-sale [Table] Land Land [Member] Buildings and improvements Building and Building Improvements [Member] Tenant improvements Tenant Improvements [Member] Tenant Improvements [Member] Long Lived Assets Held-for-sale [Line Items] Long Lived Assets Held-for-sale [Line Items] Real estate held for sale Disposal Group, Including Discontinued Operation, Property, Plant and Equipment, Gross Disposal Group, Including Discontinued Operation, Property, Plant and Equipment, Gross Accumulated depreciation Disposal Group, Including Discontinued Operation, Property, Plant and Equipment, Accumulated Depreciation Disposal Group, Including Discontinued Operation, Property, Plant and Equipment, Accumulated Depreciation Real estate held for sale, net Disposal Group, Including Discontinued Operation, Property, Plant and Equipment Acquired lease intangible assets, net Disposal Group, Including Discontinued Operation, Intangible Assets, Noncurrent Other assets associated with real estate held for sale Disposal Group, Including Discontinued Operation, Other Assets, Noncurrent Total assets associated with real estate held for sale, net Tenant security deposits Disposal Group, Including Discontinued Operation, Tenant Security Deposits Disposal Group, Including Discontinued Operation, Tenant Security Deposits Other liabilities associated with real estate held for sale Disposal Group, Including Discontinued Operation, Other Liabilities Total liabilities associated with real estate held for sale Interest Rate Swaps Derivative Instruments and Hedging Activities Disclosure [Text Block] Operating Leases Lessor, Operating Leases [Text Block] Dispositions and Real Estate Held For Sale Disposal Groups, Including Discontinued Operations, Disclosure [Text Block] Future Minimum Commitment Under Ground Lease and Corporate Office Lease Lessee, Operating Lease, Disclosure [Table Text Block] Derivative Instrument Detail [Abstract] Derivative [Table] Derivative [Table] Derivative Instrument [Axis] Derivative Instrument [Axis] Derivative Contract [Domain] Derivative Contract [Domain] Interest Rate Swap 1 Interest Rate Swap One [Member] Interest rate swap one. Interest Rate Swap 2 Interest Rate Swap Two [Member] Interest rate swap two. Interest Rate Swap 3 Interest Rate Swap Three [Member] Interest rate swap three. Interest Rate Swap 4 Interest Rate Swap Four [Member] Interest rate swap four. Interest Rate Swap 5 Interest Rate Swap Five [Member] Interest Rate Swap Five Interest Rate Swap 6 Interest Rate Swap Six [Member] Interest Rate Swap Six Interest Rate Swap 7 Interest Rate Swap Seven [Member] Interest Rate Swap Seven Derivative [Line Items] Derivative [Line Items] Interest rate swap agreement, effective date Derivative, Inception Date Interest rate swap agreement, maturity date Derivative, Maturity Date Interest Strike Rate Derivative, Fixed Interest Rate Current Notional Value Derivative, Notional Amount Fair Value Derivative Assets (Liabilities), at Fair Value, Net Summary of Significant Accounting Policies Significant Accounting Policies [Text Block] Disposal Groups, Including Discontinued Operations [Table] Disposal Groups, Including Discontinued Operations [Table] 6770 Central Avenue—Building B 1910-1920 Archibald Avenue Archibald Ave [Member] 9375 Archibald Ave. Disposal Group Classification [Axis] Disposal Group Classification [Axis] Disposal Group Classification [Domain] Disposal Group Classification [Domain] Dispositions Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] Date of Disposition Disposal Date Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member] Amount of gain (loss) recognized in AOCI on derivatives Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income (Loss), Effective Portion, Net Amount of gain (loss) reclassified from AOCI into earnings under “Interest expense” Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net Total interest expense presented in the Consolidated Statement of Operations in which the effects of cash flow hedges are recorded (line item “Interest expense”) Statement of Comprehensive Income [Abstract] Net income Comprehensive income Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Comprehensive income attributable to noncontrolling interests Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest Comprehensive income attributable to Rexford Industrial Realty, Inc. Comprehensive Income (Loss), Net of Tax, Attributable to Parent Investments in Real Estate Real Estate Disclosure [Text Block] Investment [Table] Investment [Table] Investment [Line Items] Investment [Line Items] Land Asset Acquisition Recognized Identifiable Assets Acquired and Liabilities Assumed Land Asset Acquisition Recognized Identifiable Assets Acquired and Liabilities Assumed Land Buildings and improvements Asset Acquisition Recognized Identifiable Assets Acquired and Liabilities Assumed Buildings Asset Acquisition Recognized Identifiable Assets Acquired and Liabilities Assumed Buildings Tenant improvements Asset Acquisition Recognized Identifiable Assets Acquired And Liabilities Assumed Tenant Improvements Asset Acquisition Recognized Identifiable Assets Acquired And Liabilities Assumed Tenant Improvements Acquired lease intangible assets Asset Acquisition Recognized Identifiable Assets Acquired and Liabilities Assumed Lease Intangible Assets Asset Acquisition Recognized Identifiable Assets Acquired and Liabilities Assumed Acquired Lease Intangible Assets Other acquired assets Asset Acquisition Recognized Identifiable Assets Acquired And Liabilities Assumed Working Capital Assets Asset Acquisition Recognized Identifiable Assets Acquired And Liabilities Assumed Working Capital Assets Total assets acquired Asset Acquisition Recognized Identifiable Assets Acquired and Liabilities Assumed Assets Asset Acquisition Recognized Identifiable Assets Acquired and Liabilities Assumed Assets Acquired lease intangible liabilities Asset Acquisition Recognized Identifiable Assets Acquired And Liabilities Assumed, Intangible Lease Liabilities Asset Acquisition Recognized Identifiable Assets Acquired And Liabilities Assumed, Intangible Lease Liabilities Other assumed liabilities Asset Acquisition Recognized Identifiable Assets Acquired And Liabilities Assumed, Working Capital Liabilities Asset Acquisition Recognized Identifiable Assets Acquired And Liabilities Assumed, Working Capital Liabilities Total liabilities assumed Asset Acquisition Recognized Identifiable Assets Acquired and Liabilities Assumed Liabilities Asset Acquisition Recognized Identifiable Assets Acquired and Liabilities Assumed Liabilities Net assets acquired Asset Acquisition Recognized Identifiable Assets Acquired and Liabilities Assumed Net Asset Acquisition Recognized Identifiable Assets Acquired and Liabilities Assumed Net Intangible Assets [Abstract] Intangible Assets, Net (Excluding Goodwill) [Abstract] In-place lease intangibles Finite-Lived Intangible Asset, Acquired-in-Place Leases Weighted average amortization period Acquired Finite-lived Intangible Assets, Weighted Average Useful Life Above-market lease intangibles Finite-Lived Intangible Asset, Off-market Lease, Favorable, Gross Weighted average amortization period Below Market Lease, Weighted Average Useful Life Below Market Lease, Weighted Average Useful Life Amount estimated to be reclassified during next 12 months from AOCI into earnings as a decrease to interest expense Interest Rate Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months, Net July 1, 2018 - December 31, 2018 Long-term Debt, Maturities, Repayments of Principal, Remainder of Fiscal Year 2019 Long-term Debt, Maturities, Repayments of Principal in Year Two 2020 Long-term Debt, Maturities, Repayments of Principal in Year Three 2021 Long-term Debt, Maturities, Repayments of Principal in Year Four 2022 Long-term Debt, Maturities, Repayments of Principal in Year Five Thereafter Long-term Debt, Maturities, Repayments of Principal after Year Five Total Summary of Acquired Lease Intangible Assets and Liabilities Schedule Of Acquired Lease Intangible Assets And Liabilities Table [Text Block] Schedule of acquired lease intangible assets and liabilities. Summary of Amortization or Accretion Recorded During the Period Related to Acquired Lease Intangibles Schedule Of Finite Lived Intangible Assets And Liabilities Amortization Accretion Expense Table [Text Block] Tabular disclosure of the amount of amortization or accretion recorded during the period related to our acquired lease intangible assets and liabilities. Organization Business Description and Basis of Presentation [Text Block] Offsetting Derivative Assets [Abstract] Offsetting Derivative Assets [Abstract] Gross Amounts of Recognized Assets Derivative Asset, Fair Value, Gross Asset Gross Amounts Offset in the Balance Sheet Derivative Asset, Fair Value, Gross Liability Net Amounts of Assets Presented in the Balance Sheet Derivative Asset Financial Instruments Derivative Asset, Not Offset, Policy Election Deduction Cash Collateral Received Derivative, Collateral, Obligation to Return Cash Net Amount Derivative Asset, Fair Value, Offset Against Collateral, Net of Not Subject to Master Netting Arrangement, Policy Election Offsetting Derivative Liabilities [Abstract] Offsetting Derivative Liabilities [Abstract] Gross Amounts of Recognized Liabilities Derivative Liability, Fair Value, Gross Liability Gross Amounts Offset in the Balance Sheet Derivative Liability, Fair Value, Gross Asset Net Amounts of Assets Presented in the Balance Sheet Derivative Liability Financial Instruments Derivative, Collateral, Right to Reclaim Securities Cash Collateral Received Derivative, Collateral, Right to Reclaim Cash Net Amount Derivative Liability, Fair Value, Offset Against Collateral, Net of Not Subject to Master Netting Arrangement, Policy Election Notes Payable Debt Disclosure [Text Block] Scenario [Axis] Scenario [Axis] Scenario, Unspecified [Domain] Scenario, Unspecified [Domain] Scenario, Forecast Scenario, Forecast [Member] Scenario, Credit Rating [Axis] Scenario, Credit Rating [Axis] Scenario, Credit Rating [Axis] Scenario, Credit Rating [Domain] Scenario, Credit Rating [Domain] [Domain] for Scenario, Credit Rating [Axis] Additional Investment Grade Rating External Credit Rating, Additional Investment Grade Rating [Member] External Credit Rating, Additional Investment Grade Rating [Member] $100M Senior notes Senior Notes, 100 and 125 Million Senior Notes, 100 and 125 Million [Member] Senior Notes, 100 and 125 Million [Member] $125M senior notes $125M senior notes [Member] $125M senior notes [Member] Line of Credit Unsecured Credit Facility Unsecured Credit Facility [Member] Unsecured credit facility. Unsecured Revolving Credit Facility Unsecured Revolving Credit Facility [Member] Unsecured revolving credit facility. 450 Million Senior Credit Facility 450 Million Senior Credit Facility [Member] 450 Million Senior Credit Facility [Member] Credit Facility And Term Loan Facility, 225 and 150 Million Credit Facility And Term Loan Facility, 225 and 150 Million [Member] Credit Facility And Term Loan Facility, 225 and 150 Million [Member] Credit Facility Credit Facility [Member] Credit facility. Thirty-day LIBOR plus Base Rate Base Rate [Member] Eurodollar Eurodollar [Member] Debt instrument - contingent additional borrowings Debt Instrument - Contingent Additional Borrowings Debt Instrument - Contingent Additional Borrowings Basis spread on variable rate if additional investment grade rating attained Debt Instrument, Basis Spread On Variable Rate Investment Grade Rating Pricing Structure Percentage points added to the reference rate to compute the variable rate on the debt instrument, if the pricing structure is converted to be based on attaining two investment grade ratings. Prepayment premium, percent Debt Instrument, Prepayment Premium, Percent Debt Instrument, Prepayment Premium, Percent Interest payment extension period Debt Instrument, Interest Only Payment Extension Period Debt Instrument, Interest Only Payment Extension Period Principal payment Debt Instrument, Periodic Payment, Principal Credit facility maximum future borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Commitment fee percentage if pricing structure is converted to be based on an investment-grade rating Line of Credit Facility Commitment Fee Percentage Investment Grade Rating Pricing Structure The fee if the pricing structure is converted to be based on attaining two investment grade ratings, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used. Additional availability Line of Credit Facility, Remaining Borrowing Capacity Maximum ratio of total indebtedness to total asset value Debt Instrument Covenant Ratio Of Aggregate Debt To Aggregate Asset Value Maximum Represents the maximum ratio of aggregate debt to aggregate assets as per the covenants of the debt instrument. Maximum ratio of secured debt to total asset value Debt Instrument Covenant Ratio Of Secured Debt To Aggregate Asset Value Maximum Represents the maximum ratio of secured debt to aggregate assets as per the covenants of the debt instrument. Maximum ratio of recourse debt to total asset Debt Instrument Covenant Ratio Of Recourse Debt To Aggregate Asset Value Maximum Represents the maximum ratio of secured recourse debt to aggregate assets as per the covenants of the debt instrument. Minimum tangible net worth required Debt Instrument Covenant Specified Amount For Computing Tangible Net Worth To Be Maintained Represents the specified amount for computing the tangible net worth to be maintained as per the covenants of the debt instrument. Minimum percentage of equity proceeds to be used in minimum tangible net worth calculation Debt Instrument Covenant Percentage Of Net Proceeds Raised In Future Equity Issuances Used For Computing Tangible Net Worth To Be Maintained Represents the percentage of net proceeds raised in all future equity issuances used for computing the tangible net worth to be maintained as per the covenants of the debt instrument. Minimum ratio of EBITDA to fixed charges Debt Instrument Covenant Ratio Of Adjusted EBITDA To Fixed Charges Minimum Represents the minimum required ratio of adjusted EBITDA to fixed charges as per the covenants of the debt instrument. Maximum ratio of unsecured debt to the value of the unencumbered asset pool Debt Instrument Covenant Ratio Of Unsecured Debt To Unencumbered Asset Value Maximum Represents the maximum ratio of unsecured debt to unencumbered assets as per the covenants of the debt instrument. Minimum ratio of NOI unsecured interest expense Debt Instrument Covenant Ratio Of Unencumbered NOI To Unsecured Interest Expense Minimum Represents the minimum required ratio of unencumbered NOI to unsecured interest expense as per the covenants of the debt instrument. Funds from operations percentage Distribution Maximum Funds From Operations Percentage Represents the maximum amount allowed to be distributed expressed as a percentage of funds from operations. Debt service coverage ratio Debt Instrument Covenant Ratio Debt Service Coverage Ratio Minimum Represents the minimum required ratio of net operating income to debt service as per the covenants of the debt instrument. CASH FLOWS FROM OPERATING ACTIVITIES: Net Cash Provided by (Used in) Operating Activities [Abstract] 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] Equity in income from unconsolidated real estate entities Provision for doubtful accounts Provision for Doubtful Accounts Accretion of loan origination fees Amortization of Deferred Loan Origination Fees, Net Deferred interest income on notes receivable Deferred Interest Income On Notes Receivable Interest received other than in cash for example by issuing additional notes receivable. As a noncash item, it is subtracted from net income when calculating cash provided by or used in operations using the indirect method. Loss on extinguishment of debt Gain on sale of real estate Amortization of debt issuance costs Amortization of Debt Issuance Costs Amortization of discount (premium) on notes payable Amortization of Debt Discount (Premium) Equity based compensation expense Share-based Compensation Straight-line rent Straight Line Rent Change in working capital components: Increase (Decrease) in Operating Capital [Abstract] Rents and other receivables Increase (Decrease) in Accounts Receivable Deferred leasing costs Payments for Commissions Other assets Increase (Decrease) in Other Operating Assets Accounts payable, accrued expenses and other liabilities Increase (Decrease) in Accounts Payable and Accrued Liabilities Tenant security deposits Increase (Decrease) in Security Deposits Prepaid rents Increase (Decrease) in Prepaid Rent 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] Acquisition of investments in real estate Capital expenditures Payments for Capital Improvements Acquisition related deposits Payments for (Proceeds from) Deposits on Real Estate Acquisitions Distributions from unconsolidated real estate entities Proceeds from Equity Method Investment, Distribution, Return of Capital Principal repayments of note receivable Proceeds from Collection of Notes Receivable Proceeds from sale of real estate Proceeds from Sale of Real Estate Held-for-investment 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] Issuance of stock, net Proceeds from Issuance of Common Stock Proceeds from notes payable Proceeds from Issuance of Long-term Debt Repayment of notes payable Repayments of Long-term Debt Debt issuance costs Payments of Financing Costs Debt extinguishment costs Payment for Debt Extinguishment or Debt Prepayment Cost Dividends paid to preferred stockholders Payments of Ordinary Dividends, Preferred Stock and Preference Stock Dividends paid to common stockholders Payments of Ordinary Dividends, Common Stock Distributions paid to common unitholders Payments of Ordinary Dividends, Noncontrolling Interest Repurchase of common shares to satisfy employee tax withholding requirements Payments for Repurchase of Common Stock Net cash provided by financing activities Net Cash Provided by (Used in) Financing Activities Increase (decrease) in cash, cash equivalents and restricted cash Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Cash, cash equivalents and restricted cash, beginning of period Cash, cash equivalents and restricted cash, end of period Supplemental disclosure of cash flow information: Supplemental Cash Flow Information [Abstract] Cash paid for interest (net of capitalized interest of $934 and $924 for the six months ended June 30, 2018 and 2017, respectively) Interest Paid, Net Supplemental disclosure of noncash investing and financing transactions: Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] (Decrease) increase in capital expenditure accrual Increase (Decrease) in Construction Payables Accrual of dividends Expensed share-based compensation Allocated Share-based Compensation Expense Capitalized share-based compensation Employee Service Share-based Compensation, Allocation of Recognized Period Costs, Capitalized Amount Total share-based compensation Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost Unrecognized compensation expense related to non-vested shares Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized Weighted average remaining vesting period Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition Basis of Presentation and Principles of Consolidation Consolidation, Policy [Policy Text Block] Use of Estimates Use of Estimates, Policy [Policy Text Block] Cash and Cash Equivalents Cash and Cash Equivalents, Policy [Policy Text Block] Restricted Cash Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, Policy [Policy Text Block] Notes Receivable Loans and Leases Receivable, Mortgage Banking Activities, Policy [Policy Text Block] Investments in Real Estate Real Estate, Policy [Policy Text Block] Assets Held for Sale Real Estate Held for Development and Sale, Policy [Policy Text Block] Deferred Leasing Costs Precontract Costs, Policy [Policy Text Block] Impairment of Long-Lived Assets Impairment or Disposal of Long-Lived Assets, Policy [Policy Text Block] Investment in Unconsolidated Real Estate Entities Equity Method Investments [Policy Text Block] Income Taxes Income Tax, Policy [Policy Text Block] Derivative Instruments and Hedging Activities Derivatives, Policy [Policy Text Block] Revenue Recognition Revenue Recognition, Policy [Policy Text Block] Valuation of Receivables Receivables, Policy [Policy Text Block] Equity Based Compensation Compensation Related Costs, Policy [Policy Text Block] Equity Offering Costs Equity Offering Costs Policy [Policy Text Block] Disclosure of accounting policy for costs associated with raising equity. Earnings Per Share Earnings Per Share, Policy [Policy Text Block] Segment Reporting Segment Reporting, Policy [Policy Text Block] Adoption of New Accounting Pronouncements and Recently Issued Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block]