Investments, All Other Investments [Abstract] Schedule of Business Acquisitions, by Acquisition [Table] Schedule of Business Acquisitions, by Acquisition [Table] Business Acquisition [Axis] Business Acquisition [Axis] Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree [Domain] 28903 Avenue Paine 28903 Avenue Paine [Member] 28903 Avenue Paine 2390 Ward Avenue 2390 Ward Avenue [Member] 2390 Ward Avenue [Member] Safari Business Center Safari Business Center [Member] Safari Business Center [Member] 4175 Conant Street 4175 Conant Street [Member] 4175 Conant Street [Member] 5421 Argosy Avenue 5421 Argosy Avenue [Member] 5421 Argosy Avenue [Member] 14820-14830 Carmenita Road 14820-14830 Carmenita Road [Member] 14820-14830 Carmenita Road [Member] 3002-3072 Inland Empire Blvd 13225 South Western Avenue and 15401 South Figueroa Street [Member] 3002-3072 Inland Empire Boulevard [Member] 17000 Kingsview Avenue 20200 Sunburst Street [Member] 20200 Sunburst Street [Member] Rancho Pacifica Park Rancho Pacifica Industrial Park [Member] Rancho Pacifica Industrial Park [Member] 11190 White Birch Drive 11190 White Birch Drive [Member] 11190 White Birch Drive [Member] 4832-4850 Azusa Canyon Road 4832 Azusa Canyon Road [Member] 4832 Azusa Canyon Road [Member] 1825 Soto Street 1825 Soto Street [Member] 1825 Soto Street [Member] 19402 Susana Street 19402 Susana Street [Member] 19402 Susana Street [Member] 9375 Archibald Avenue Archibald Ave [Member] 9375 Archibald Ave. 2535 Midway Drive 2535 Midway Drive [Member] 2535 Midway Drive [Member] Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] $125M senior notes $125M senior notes [Member] $125M senior notes [Member] Business Acquisition [Line Items] Business Acquisition [Line Items] Date of Acquisition Business Acquisition, Date of Acquisition Agreement Rentable Square Feet Net Rentable Area Number of Buildings Number Of Buildings Acquired Number of buildings acquired. Purchase Price Acquisition Purchase Price The contractual price of a business combination or asset acquisition Capitalized acquisition costs Acquisition Costs, Period Cost Payments to acquire real estate Payments to Acquire Real Estate Principal amount Long-term Debt, Gross Accounting Policies [Abstract] Summary of Significant Accounting Policies Significant Accounting Policies [Text Block] Fair Value Disclosures [Abstract] 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] 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] Vesting Vesting [Axis] Vesting Vesting [Domain] October 1, 2017 - December 31, 2017 Share Based Compensation, Awards Vesting, Remainder of Fiscal Year [Member] Share Based Compensation, Awards Vesting, Remainder of Fiscal Year [Member] 2018 Share Based Compensation, Awards Vesting, Year 2 [Member] Share Based Compensation, Awards Vesting, Year 2 [Member] 2019 Share Based Compensation, Awards Vesting, Year 3 [Member] Share Based Compensation, Awards Vesting, Year 3 [Member] 2020 Share Based Compensation, Awards Vesting, Year 4 [Member] Share Based Compensation, Awards Vesting, Year 4 [Member] 2021 Share Based Compensation, Awards Vesting, Year 5 [Member] Share Based Compensation, Awards Vesting, Year 5 [Member] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Non-vested shares Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number TSR Target Percentage TSR Target Percentage TSR Target 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 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 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] Rancho Cucamonga, CA Rancho Cucamonga, CA [Member] Rancho Cucamonga, CA [Member] Range Range [Axis] Range Member Range [Domain] Minimum Minimum [Member] Maximum Maximum [Member] Title of Individual [Axis] Title of Individual [Axis] Relationship to Entity [Domain] Relationship to Entity [Domain] Construction Employees Construction Employees [Member] Construction Employees Leasing Employees Leasing Employees [Member] Leasing Employees Property Plant And Equipment By Type Property, Plant and Equipment, Type [Axis] Property Plant And Equipment Type Property, Plant and Equipment, Type [Domain] Building Building [Member] Site Improvements Land Improvements [Member] Scenario [Axis] Scenario [Axis] Scenario, Unspecified [Domain] Scenario, Unspecified [Domain] Previously Reported Scenario, Previously Reported [Member] Summary Of Significant Accounting Policies [Line Items] Summary Of Significant Accounting Policies [Line Items] Summary of significant accounting policies. Mortgage loan, face amount Mortgage Loans on Real Estate, Face Amount of Mortgages Rentable square feet Proceeds from fees received Proceeds from Fees Received Interest rate Mortgage Loans on Real Estate, Interest Rate Deferred interest Loans and Leases Receivable, Deferred Income Mortgage loans, carrying amount Mortgage Loans on Real Estate, Carrying Amount of Mortgages Allocation period Purchase Price Allocation Period The maximum period of time in which a purchase price allocation is typically finalized. 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 Interest Paid, 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 The capitalized compensation costs, which includes costs incurred during periods in which activities necessary to get a property ready for its intended use are in progress, as well as costs related to the successful origination of a lease. 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 Net cash used in investing activities Net Cash Provided by (Used in) Investing Activities Restricted cash Restricted Cash and Cash Equivalents Derivative Instrument Detail [Abstract] Derivative [Table] Derivative [Table] Equity Components [Axis] Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member] Derivative [Line Items] Derivative [Line Items] Amount of gain (loss) recognized in AOCI on derivatives (effective portion) Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income (Loss), Effective Portion, Net Amount of loss reclassified from AOCI into earnings under “Interest expense” (effective portion) Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net Amount of gain (loss) recognized in earnings under “Interest expense” (ineffective portion and amount excluded from effectiveness testing) Derivative Instruments, Gain (Loss) Recognized in Income, Ineffective Portion and Amount Excluded from Effectiveness Testing, Net 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 Interests Noncontrolling Interest [Member] Common Stock Common Stock [Member] Class of Stock [Line Items] Class of Stock [Line Items] Issuance of operating partnership units Limited Partners' Capital Account, Units Outstanding Noncontrolling interest percentage ownership in Operating Partnership Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners Conversion of units to common stock, shares Stock Issued During Period, Shares, Conversion of Units Conversion of units to common stock Stock Issued During Period, Value, Conversion of Units 2013 Incentive Award Plan Two Thousand Thirteen Incentive Award Plan [Member] 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 OP Unit Distribution Percentage Unvested OP Unit Distribution Percentage Unvested Performance Units quarterly per-unit distribution as a percentage of the distributions paid on OP Units. Related Party Transactions [Abstract] Schedule Of Related Party Transactions By Related Party [Table] Schedule of Related Party Transactions, by Related Party [Table] 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 Statement of Cash Flows [Abstract] Capitalized interest, net Earnings Per Share [Abstract] Award Date [Axis] Award Date [Axis] Award Date [Domain] Award Date [Domain] 2015 Award 2015 Award [Member] 2015 Award [Member] 2016 Award 2016 Award [Member] 2016 Award [Member] Total shareholder return, absolute basis Total Shareholder Return, Absolute Basis Total Shareholder Return, Absolute Basis Total shareholder return, absolute basis, maximum Total Shareholder Return, Absolute Basis, Maximum Total Shareholder Return, Absolute Basis, Maximum 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] Investment [Table] Investment [Table] Name of Property [Axis] Name of Property [Axis] Name of Property [Domain] Name of Property [Domain] Other 2017 Acquisitions Acquisitions Other Than Rancho Pacifica [Member] Acquisitions Other Than Rancho Pacifica [Member] Total 2017 Acquisitions Total Acquisitions [Member] Total Acquisitions [Member] 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] Investment [Line Items] Investment [Line Items] ASSETS Assets [Abstract] Land Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Land Buildings and improvements Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Buildings Tenant improvements Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Tenant Improvements Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Tenant Improvements Acquired lease intangible assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill Other acquired assets Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Working Capital Assets Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Working Capital Assets Total assets acquired Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets Liabilities Liabilities [Abstract] Acquired lease intangible liabilities Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed, Intangible Lease Liabilities Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed, Intangible Lease Liabilities Other assumed liabilities Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Working Capital Liabilities Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Working Capital Liabilities Total liabilities assumed Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities Net assets acquired Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net Weighted average amortization period Acquired Finite-lived Intangible Assets, Weighted Average Useful Life In-place lease intangibles Finite-Lived Intangible Asset, Acquired-in-Place Leases 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 Commitments and Contingencies Disclosure [Abstract] Future Minimum Commitment Under Ground Lease and Corporate Office Lease Lessee, Operating Lease, Disclosure [Table Text Block] Related Party Transactions Related Party Transactions Disclosure [Text Block] Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] 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. Corona, CA Corona, CA [Member] Corona, CA 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 Area of real estate property (square feet) Area of Real Estate Property Contingency period Lessee Leasing Arrangements, Operating Leases, Contingency Period Operating Leases, Contingency Period Corona lease transaction costs Corona Lease Transaction Costs Corona Lease Transaction Costs 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 Earnings Per Share Earnings Per Share [Text Block] Computation of Basic and Diluted Earnings Per Share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] 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, 2017 (in shares) 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 March 31, 2017 (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 Statement of Stockholders' Equity [Abstract] Statement [Table] Statement [Table] Class of Stock [Axis] Class of Stock [Axis] Class of Stock [Domain] Class of Stock [Domain] Preferred Stock Series A Preferred Stock [Member] 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] Accumulated Other Comprehensive Income AOCI Attributable to Parent [Member] Statement [Line Items] Statement [Line Items] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Beginning Balance Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Beginning Balance, shares Common Stock, Shares, Outstanding Issuance of common stock, shares Stock Issued During Period, Shares, New Issues Issuance of stock Stock Issued During Period, Value, New Issues Offering costs Offering Costs Specific incremental costs directly attributable to offering of securities. Share-based compensation, 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, shares Shares acquired to satisfy employee tax withholding requirements on vesting restricted stock Adjustments Related to Tax Withholding for Share-based Compensation Acquisition of real estate portfolio Noncontrolling Interest, Increase from Business Combination Net income Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Other comprehensive loss Other Comprehensive Income (Loss), Net of Tax Preferred stock dividends Dividends, Preferred Stock Common stock dividends Dividends Distributions Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders Ending Balance Ending Balance, shares Derivative Instruments and Hedging Activities Disclosure [Abstract] Interest Rate Swaps Derivative Instruments and Hedging Activities Disclosure [Text Block] 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] 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 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 Ownership Interest Consolidation Percentage Consolidation percentage. 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] 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 Leases, Operating [Abstract] Operating Leases, Future Minimum Payments Receivable [Abstract] Operating Leases, Future Minimum Payments Receivable [Abstract] 2018 Operating Leases, Future Minimum Payments Receivable, Current 2019 Operating Leases, Future Minimum Payments Receivable, in Two Years 2020 Operating Leases, Future Minimum Payments Receivable, in Three Years 2021 Operating Leases, Future Minimum Payments Receivable, in Four Years 2022 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 Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Table] Fair Value Measurements, Recurring and Nonrecurring [Table] Fair Value By Fair Value Hierarchy Level Fair Value, Hierarchy [Axis] Fair Value Measurements Fair Value Hierarchy Fair Value Hierarchy [Domain] 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 Fair Value Measurements Fair Value Disclosures [Text Block] Operating Leases Lessor, Operating Leases [Text Block] Equity Stockholders' Equity Note Disclosure [Text Block] Fair Value By Balance Sheet Grouping [Table] Fair Value, by Balance Sheet Grouping [Table] 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 Schedule of Investments [Abstract] Investment in Unconsolidated Real Estate Entities Equity Method Investments and Joint Ventures Disclosure [Text Block] Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income (Loss) [Table] 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] Other comprehensive loss before reclassifications Other Comprehensive Income (Loss), before Reclassifications, Net of Tax Amounts reclassified from accumulated other comprehensive loss to interest expense Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax Net current period other comprehensive income (loss) Less other comprehensive 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 Summary of Acquired Wholly Owned Property Acquisitions Schedule of Business 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] Summary of Pro Forma Information Business Acquisition, Pro Forma Information [Table Text Block] Summary of Disposed Properties Disposal Groups, Including Discontinued Operations [Table Text Block] Organization Business Description and Basis of Presentation [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] [Member] At-The-Market Equity Offering Program $300M [Member] ATM Program At-The-Market Equity Offering Program $150M [Member] At-The-Market Equity Offering Program $150M [Member] Previous ATM Program At The Market Equity Offering Program [Member] At the market equity offering program. 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. Shares, Issued Shares, Issued Common stock, shares, issued (in shares) Common Stock, Shares, Issued Common stock share price (in dollars per share) Shares Issued, Price Per Share Issuance of common stock, net Proceeds from Issuance of Common Stock Net proceeds from issuance of common stock Proceeds From Issuance Of Common Stock, Net Proceeds From Issuance Of Common Stock, Net Shares available under ATM (in shares) Common Stock, Shares Available under ATM Common Stock, Shares Available under At The Market Equity Offering Program Cash and Cash Equivalents Cash and Cash Equivalents, Policy [Policy Text Block] Restricted Cash Policy 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] 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 [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] Recently Issued Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Debt Disclosure [Abstract] Debt Instrument [Table] Schedule of Long-term Debt Instruments [Table] 1065 Walnut Street 1065 Walnut Street [Member] 1065 Walnut Street [Member] Extinguishment of Debt [Axis] Extinguishment of Debt [Axis] Extinguishment of Debt, Type [Domain] Extinguishment of Debt, Type [Domain] Prepayment Fees Prepayment Fees [Member] Prepayment Fees [Member] Debt Premium Write Off Debt Premium Write Off [Member] Debt Premium Write Off [Member] $100M Notes Senior Notes [Member] Line of Credit Line of Credit [Member] Fixed Rate Debt Fixed Rate Debt [Member] Fixed rate debt. Unsecured Credit Facility Unsecured Credit Facility [Member] Unsecured credit facility. Credit Facility Credit Facility [Axis] Credit Facility Credit Facility [Domain] Term Loan Term Loan [Member] Term loan. Revolving Credit Facility Revolving Credit Facility [Member] Debt Instrument [Axis] Debt Instrument [Axis] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Unsecured Revolving Credit Facility Unsecured Revolving Credit Facility [Member] Unsecured revolving credit facility. 300 Million Credit Facility 300 Million Credit Facility [Member] 300 Million Credit Facility [Member] 450 Million Senior Credit Facility 450 Million Senior Credit Facility [Member] 450 Million Senior Credit Facility [Member] $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 Credit Facility Credit Facility [Member] Credit facility. $60M Term Loan 60 Million Term Loan Facility [Member] Term loan facility. Variable Rate [Axis] Variable Rate [Axis] Variable Rate [Domain] Variable Rate [Domain] Thirty-day LIBOR plus London Interbank Offered Rate (LIBOR) [Member] Base Rate Base Rate [Member] Eurodollar Eurodollar [Member] Subsequent Event Type [Axis] Subsequent Event Type [Axis] Subsequent Event Type [Domain] Subsequent Event Type [Domain] Subsequent Event Subsequent Event [Member] Debt Instrument [Line Items] Debt Instrument [Line Items] Repayments of debt Repayments of Secured Debt Prepayment penalties Debt Extinguishment Costs Debt Extinguishment Costs Credit facility maximum future borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Basis spread on variable rate Debt Instrument, Basis Spread on Variable Rate Basis spread on variable rate if additional investment grade rating attained Debt Instrument, Basis Spread On Variable Rate If Additional Investment Grade Rating Attained debt instrument, basis spread on variable rate if additional investment grade rating is attained Commitment fee percentage Line of Credit Facility, Unused Capacity, Commitment Fee Percentage Commitment fee percentage if pricing structure is converted to be based on an investment-grade rating Line of Credit Facility, Unused Capacity, Commitment Fee Percentage if pricing structure is converted to be based on an investment-grade rating Line of Credit Facility, Unused Capacity, Commitment Fee Percentage if pricing structure is converted to be based on an investment-grade rating Principal Prepayment Percentage Principal Prepayment Percentage Principal Prepayment Percentage Prepayment of principal minimum amount Debt Instrument, Prepayment Of Principal, Minimum Amount Debt Instrument, Prepayment Of Principal, Minimum Amount Stated Interest Rate Debt Instrument, Interest Rate, Stated Percentage 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 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. Number of extensions Number Of Additional Extension Periods Number of additional extension periods. 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. Extension period Debt Instrument Term Extension Period Debt instrument term extension period. Number of derivative instruments Derivative, Number of Instruments Held 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. 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 Income (Loss) from Equity Method Investments Provision for doubtful accounts Provision for Doubtful Accounts Depreciation and amortization Depreciation, Depletion and Amortization, Nonproduction Amortization of (below) above market lease intangibles, net Amortization of above and below Market Leases 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 (Loss) on Extinguishment of Debt Gain on sale of real estate Gains (Losses) on Sales of Investment Real Estate Amortization of debt issuance costs Amortization of Debt Issuance Costs Accretion of premium on notes payable Accretion Of Premium On Notes Payable Accretion of premium on notes payable. 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 Issuance of notes receivable Payments to Acquire Notes Receivable 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 CASH FLOWS FROM FINANCING ACTIVITIES: Net Cash Provided by (Used in) Financing Activities [Abstract] Issuance of preferred stock, net Proceeds from Issuance of Preferred Stock and Preference Stock Issuance of common stock, net 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 (Decrease) increase in cash and cash equivalents Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Cash and cash equivalents, beginning of period Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Cash and cash equivalents, end of period Supplemental disclosure of cash flow information: Supplemental Cash Flow Information [Abstract] Cash paid for interest (net of capitalized interest of $1,311 and $1,315 for the nine months ended September 30, 2017 and 2016, respectively) Interest Paid, Net Supplemental disclosure of noncash investing and financing transactions: Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] Capital expenditure accruals Capital Expenditures Incurred but Not yet Paid Accrual of dividends Dividends Payable Accrual of offering costs Accrual Of Offering Costs Accrual of offering costs related to issuance of common or preferred stock. Statement of Comprehensive Income [Abstract] Net income Other comprehensive income (loss): cash flow hedge adjustment 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 LIBOR Liability Class [Axis] Liability Class [Axis] Fair Value by Liability Class [Domain] Fair Value by Liability Class [Domain] Derivative Financial Instruments, Assets Derivative Financial Instruments, Assets [Member] Derivative Financial Instruments, Liabilities Derivative Financial Instruments, Liabilities [Member] Asset Class [Axis] Asset Class [Axis] Asset Class [Domain] Asset Class [Domain] 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 7 Interest Rate Swap Seven [Member] [Member] Interest Rate Swap Seven [Member] [Member] 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 agreement, effective date Derivative, Inception Date Interest rate swap agreement, maturity date Derivative, Maturity Date Interest Strike Rate Derivative, Fixed Interest Rate Fair Value Current Notional Value Derivative, Notional Amount Interest rate swap liability Additional amount reclassified from AOCI as an increase to interest expense Interest Rate Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months, Net Subsequent Events [Abstract] Subsequent Events Subsequent Events [Text Block] Numerator: Net Income (Loss) Attributable to Parent [Abstract] Less: Preferred stock dividends Preferred Stock Dividends, Income Statement Impact Less: net income attributable to noncontrolling interest Net Income (Loss) Attributable to Noncontrolling Interest Less: Net income attributable 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 Add back: Net income attributable to noncontrolling interests Numerator for diluted net income attributable to common stockholders Net Income (Loss) Available to Common Stockholders, Diluted Denominator: Weighted Average Number of Shares Outstanding, Diluted [Abstract] Weighted average shares of common stock outstanding - basic (in shares) Weighted Average Number of Shares Outstanding, Basic Effect of dilutive securities - performance units (in shares) Incremental Common Shares Attributable to Dilutive Effect of Contingently Issuable Shares Effect of dilutive securities - operating partnership units (in shares) Incremental Common Shares Attributable to Dilutive Effect of Operating Partnership Units Incremental Common Shares Attributable to Dilutive Effect of Operating Partnership Units Weighted average shares of common stock outstanding - diluted (in shares) Weighted Average Number of Shares Outstanding, Diluted Earnings per share — Basic Earnings Per Share, Basic [Abstract] Net income attributable to common stockholders (in dollars per share) Earnings Per Share, Basic Earnings per share — Diluted Earnings Per Share, Diluted [Abstract] Net income attributable to common stockholders (in dollars per share) Earnings Per Share, Diluted Less: unamortized discount and deferred loan costs Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net Carrying value Business Combinations [Abstract] Disposal Groups, Including Discontinued Operations [Table] Disposal Groups, Including Discontinued Operations [Table] 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] Disposal Group Name [Axis] Disposal Group Name [Axis] Disposal Group Name [Domain] Disposal Group Name [Domain] 2811 Harbor Boulevard 2811 Harbor Boulevard [Member] 2811 Harbor Boulevard [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] Contractual Sales Price Disposal Group, Including Discontinued Operation, Consideration Gain Recorded (in thousands) 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 TOTAL OPERATING EXPENSES Operating Expenses OTHER EXPENSES Nonoperating Income (Expense) [Abstract] Acquisition expenses Business Combination, Acquisition Related Costs Interest expense Interest Expense TOTAL OTHER EXPENSES Other Expenses TOTAL EXPENSES Other Cost and Expense, Operating Equity in income from unconsolidated real estate entities Loss on extinguishment of debt Gains on sale of real estate NET INCOME NET INCOME ATTRIBUTABLE TO REXFORD INDUSTRIAL REALTY, INC. Net Income (Loss) Attributable to Parent Less: preferred stock dividends Less: earnings allocated to participating securities Net income available to common stockholders per share - basic and diluted (in dollars per share) Earnings Per Share, Basic and Diluted Weighted average shares of common stock outstanding - diluted (in shares) Dividends declared per common share (in dollars per share) Common Stock, Dividends, Per Share, Declared Total revenues Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual Net income Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual Total revenues Business Acquisition, Pro Forma Revenue Net income attributable to common stockholders Business Acquisition, Pro Forma Net Income (Loss) Net income attributable to common stockholders per share - basic Business Acquisition, Pro Forma Earnings Per Share, Basic Net income attributable to common stockholders per share - diluted Business Acquisition, Pro Forma Earnings Per Share, Diluted Investments in Real Estate Real Estate Disclosure [Text Block] Subsequent Event [Table] Subsequent Event [Table] 13225 S Western Avenue and 15401 S Figueroa St 12345 First American Way First American Way [Member] 12345 First American Way. 9401 De Soto 9401 De Soto Avenue [Member] 9401 De Soto Avenue Operating Partnership Units Operating Partnership Units [Member] Operating Partnership Units Series A Preferred Stock Subsequent Event [Line Items] Subsequent Event [Line Items] Number of buildings Proceeds from Sale of Real Estate Proceeds from Sale of Real Estate Cass dividend (in dollars per share) Dividends Payable, Amount Per Share Dividend percentage Preferred Stock, Dividend Rate, Percentage Schedule Of Operating Leased Assets [Table] Schedule of Operating Leased Assets [Table] Operating Leased Assets [Line Items] Operating Leased Assets [Line Items] October 1, 2017 - December 31, 2017 Operating Leases, Future Minimum Payments, Remainder of Fiscal Year 2018 Operating Leases, Future Minimum Payments, Due in Two Years 2019 Operating Leases, Future Minimum Payments, Due in Three Years 2020 Operating Leases, Future Minimum Payments, Due in Four Years 2021 Operating Leases, Future Minimum Payments, Due in Five Years Thereafter Operating Leases, Future Minimum Payments, Due Thereafter Total Operating Leases, Future Minimum Payments Due 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 Entity Common Stock, Shares Outstanding 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 Equity Method Investments [Table] Schedule of Equity Method Investments [Table] 3255 Mission Oaks Blvd 3255 Mission Oaks Blvd [Member] 3255 Mission Oaks Blvd Investment, Name [Axis] Investment, Name [Axis] Investment, Name [Domain] Investment, Name [Domain] Mission Oaks Joint Venture Mission Oaks Joint Venture [Member] Mission oaks joint venture. Schedule Of Equity Method Investments [Line Items] Schedule of Equity Method Investments [Line Items] Ownership Interest acquired Business Acquisition, Percentage of Voting Interests Acquired Management, leasing and development services Intangible Assets Intangible Assets Disclosure [Text Block] Schedule of Accounts, Notes, Loans and Financing Receivable Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] Net above (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 Accretion of above-market ground lease intangibles Accretion Of Above Market Ground Lease Intangible Accretion of above market ground lease intangible. Statement of Financial Position [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 Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Note receivable, net Financing Receivable, Net 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 Total Assets Assets LIABILITIES & EQUITY Liabilities and Equity [Abstract] Notes payable Accounts payable, accrued expenses and other liabilities Accounts Payable and Accrued Liabilities Dividends payable Acquired lease intangible liabilities, net Tenant security deposits Security Deposit Liability Prepaid rents Advance Rent 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, 10,000,000 shares authorized; 5.875% series A cumulative redeemable preferred stock, liquidation preference $25.00 per share, 3,600,000 shares outstanding at September 30, 2017 and December 31, 2016 Preferred Stock, Value, Issued Common Stock, $0.01 par value 490,000,000 shares authorized and 77,595,240 and 66,454,375 shares outstanding at September 30, 2017 and December 31, 2016, 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 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. 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. 12907 Imperial Highway 12907 Imperial Highway [Member] 12907 Imperial Highway [Member] 1065 Walnut Street 1065 E. Walnut Street [Member] 1065 E. Walnut Street [Member] Line of Credit Contractual Maturity Date Debt Instrument, Maturity Date Description of variable rate basis Debt Instrument, Description of Variable Rate Basis Effective Interest Rate Debt Instrument, Interest Rate, Effective Percentage Number of properties securing loan Number Of Properties Securing Loan Number of properties securing loan. Amortization period Amortization Table Period Amortization table period. Additional interest 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) Preferred stock, par value (in dollars per share) Preferred Stock, Par or Stated Value Per Share Preferred Stock, Dividend Rate, Percentage Preferred stock, liquidation preference (in dollars per share) Preferred Stock, Liquidation Preference Per Share Preferred stock, shares authorized (in shares) Preferred Stock, Shares Authorized Preferred stock, shares outstanding (in shares) Preferred Stock, Shares Outstanding October 1, 2017 - December 31, 2017 Long-term Debt, Maturities, Repayments of Principal, Remainder of Fiscal Year 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 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 Compensation expense not yet capitalized Employee Service Share Based Compensation Nonvested Awards Compensation Cost Not Yet Capitalized Unrecognized cost of unvested share-based compensation awards expected to be capitalized for employees who provide leasing and construction services. Weighted average remaining vesting period Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition Notes Payable Debt Disclosure [Text Block]