Related Party Transactions [Abstract] Summary of related party activity Schedule of Related Party Transactions [Table Text Block] Real Estate [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] JANAF JANAF Acquisition [Member] JANAF Acquisition Debt Instrument [Axis] Debt Instrument [Axis] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Maturity Date July 2023 Maturity Date July 2023 [Member] Maturity Date July 2023 Maturity Date January 2026 Maturity Date January 2026 [Member] Maturity Date January 2026 Business Acquisition [Line Items] Business Acquisition [Line Items] Investment property Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment Lease intangibles and other assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill and Other Assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill and Other Assets Above market leases Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles Restricted cash Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Restricted Cash Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Restricted Cash Purchase price allocation of assets acquired and liabilities assumed: Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Below Market Lease Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Below Market Lease Debt assumed in business acquisition Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Long-term Debt Net purchase price allocation of assets acquired and liabilities assumed: Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net Consideration paid with cash and restricted cash Business Combination Consideration Transferred, Cash And Restricted Cash Business Combination Consideration Transferred, Cash And Restricted Cash Consideration paid with assumption of debt Business Combination, Consideration Transferred, Liabilities Incurred Consideration paid with common stock Business Combination, Consideration Transferred, Equity Interests Issued and Issuable Total consideration Business Combination, Consideration Transferred Debt assumed in business acquisition, deliveraging reserve Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Long-term Debt, Deliveraging Reserve Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Long-term Debt, Deliveraging Reserve Debt instrument, periodic payment Debt Instrument, Periodic Payment Debt Instrument, Interest Rate, Stated Percentage Debt Instrument, Interest Rate, Stated Percentage Equity [Abstract] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Antidilutive Securities [Axis] Antidilutive Securities [Axis] Antidilutive Securities, Name [Domain] Antidilutive Securities, Name [Domain] Operating Partnership Common Units Operating Partnership Common Units [Member] Operating partnership common units. Class of Stock [Axis] Class of Stock [Axis] Class of Stock [Domain] Class of Stock [Domain] Series B Preferred Stock Series B Preferred Stock [Member] Series D Cumulative Convertible Preferred Stock Series D Cumulative Convertible Preferred Stock [Member] Series D Cumulative Convertible Preferred Stock [Member] Warrant Warrant [Member] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Preferred stock, shares outstanding (in shares) Preferred Stock, Shares Outstanding Incremental Common Shares Attributable to Dilutive Effect of Contingently Issuable Shares Incremental Common Shares Attributable to Dilutive Effect of Contingently Issuable Shares Schedule of Related Party Transactions, by Related Party [Table] Schedule of Related Party Transactions, by Related Party [Table] Related Party [Axis] Related Party [Axis] Related Party [Domain] Related Party [Domain] Pineland Shopping Center Pineland Shopping Center [Member] Pineland Shopping Center [Member] Related Party Transaction [Axis] Related Party Transaction [Axis] Related Party Transaction [Domain] Related Party Transaction [Domain] Partial Funding of Sea Turtle Development Note Partial Funding of Sea Turtle Development Note [Member] Partial Funding of Sea Turtle Development Note Consideration for Sale of Land Note Consideration for Sale of Land Promissory Note [Member] Consideration for Sale of Land Promissory Note Related Party Transaction [Line Items] Related Party Transaction [Line Items] Note receivable from related parties Notes Receivable, Related Parties Allowance for Loan and Lease Losses, Write-offs Allowance for Loan and Lease Losses, Write-offs Loans and Leases Receivable, Impaired, Interest Lost on Nonaccrual Loans Loans and Leases Receivable, Impaired, Interest Lost on Nonaccrual Loans Development Fee, Percent Fee Development Fee, Percent Fee Development Fee, Percent Fee Impaired Financing Receivable, Related Allowance, Recoveries Impaired Financing Receivable, Related Allowance, Recoveries Impaired Financing Receivable, Related Allowance, Recoveries Impaired Financing Receivable, Related Allowance Impaired Financing Receivable, Related Allowance Investment Properties Real Estate Disclosure [Text Block] CG&A Schedule [Abstract] CG&A Schedule [Abstract] Corporate administration Professional Fees Professional fees Salaries, Wages and Officers' Compensation Corporate administration Corporate Administration Expense Corporate Administration Expense Taxes and Licenses Taxes and Licenses Travel Travel and Entertainment Expense Capital related costs Other Nonoperating Expense Advertising Advertising Expense Acquisition costs Acquisition Costs, Period Cost Total Corporate General & Administrative General and Administrative Expense Accounting Policies [Abstract] Property, Plant and Equipment [Table] Property, Plant and Equipment [Table] Lease Arrangement, Type [Axis] Lease Arrangement, Type [Axis] Lease Arrangement, Type [Domain] Lease Arrangement, Type [Domain] New Lease [Member] New Lease [Member] New Lease [Member] Renewed Lease [Member] Renewed Lease [Member] Renewed Lease [Member] Counterparty Name [Axis] Counterparty Name [Axis] Counterparty Name [Domain] Counterparty Name [Domain] Revere Loan Revere Loan [Member] Revere Loan [Member] Balance Sheet Location [Axis] Balance Sheet Location [Axis] Balance Sheet Location [Domain] Balance Sheet Location [Domain] Rent and other tenant receivables Rent and other tenant receivables [Member] Rent and other tenant receivables [Member] Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Domain] Property, Plant and Equipment, Type [Domain] Building and building improvements Building and Building Improvements [Member] Range [Axis] Range [Axis] Range [Domain] Range [Domain] Minimum Minimum [Member] Maximum Maximum [Member] Adjustments for New Accounting Pronouncements [Axis] Adjustments for New Accounting Pronouncements [Axis] Type of Adoption [Domain] Type of Adoption [Domain] Accounting Standards Update 2016-18 [Member] Accounting Standards Update 2016-18 [Member] Property, Plant and Equipment [Line Items] Property, Plant and Equipment [Line Items] Property, Plant and Equipment, Useful Life Property, Plant and Equipment, Useful Life Asset Impairment Charges Asset Impairment Charges Maturity of highly liquid investments Maturity Of Highly Liquid Investments Maturity of highly liquid investments. Insurance coverage amount Insurance Coverage Amount Insurance coverage amount. Past due rent charge term Past Due Rent Term Past due rent term. Allowance for uncollectible accounts Allowance for Doubtful Accounts Receivable Provision for Doubtful Accounts Provision for Doubtful Accounts Finite-lived intangible assets, accumulated amortization Finite-Lived Intangible Assets, Accumulated Amortization Amortization of intangible assets Amortization of Intangible Assets Recoveries related to tenant receivables Deferred Rent Receivables, Net Asset management fee, percent fee Asset Management Fee, Percent Fee Asset Management Fee, Percent Fee Property management fee, percent fee Property Management Fee, Percent Fee Commission fee, percent fee Commission Fee, Percent Fee Commission Fee, Percent Fee Minimum percentage of taxable income to be distributed to stockholders (as percent) Minimum Percentage Of Distribution Of Taxable Income To Stockholders Minimum percentage of distribution of taxable income to stockholders. Provision for federal income taxes Current Federal Tax Expense (Benefit) Term of disqualification to be taxed as a REIT due to loss of REIT status Term Of Disqualification To Be Taxed As Reit Due To Losses Of Reit Status Term of disqualification to be taxed as a REIT due to losses of REIT status. Common Stock, Par or Stated Value Per Share Common Stock, Par or Stated Value Per Share Marketing and advertising expense Marketing and Advertising Expense Reduction in cash from operating activities Net Cash Provided by (Used in) Operating Activities Increase in cash from investing activities Net Cash Provided by (Used in) Investing Activities Statement of Financial Position [Abstract] Statement [Table] Statement [Table] Series D Preferred Stock Series D Preferred Stock [Member] Series A Preferred Stock Series A Preferred Stock [Member] Statement [Line Items] Statement [Line Items] Preferred stock, no par value Preferred Stock, No Par Value Preferred stock, shares authorized (in shares) Preferred Stock, Shares Authorized Preferred stock, shares issued (in shares) Preferred Stock, Shares Issued Preferred stock, aggregate liquidation preference Preferred Stock, Liquidation Preference, Value Common stock, par value per share (in usd per share) Common stock, shares authorized (in shares) Common Stock, Shares Authorized Common stock, shares issued (in shares) Common Stock, Shares, Issued Common stock, shares outstanding (in shares) Common Stock, Shares, Outstanding Real Estate [Table] Real Estate [Table] Common Stock Common Stock [Member] Geographical [Axis] Geographical [Axis] Geographical [Domain] Geographical [Domain] VIRGINIA VIRGINIA Disposal Group Classification [Axis] Disposal Group Classification [Axis] Disposal Group Classification [Domain] Disposal Group Classification [Domain] Disposal Group, Disposed of by Sale, Not Discontinued Operations 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] Chipotle Ground Lease at Conyers Crossing Conyers Crossing [Member] Conyers Crossing [Member] Real Estate [Line Items] Real Estate [Line Items] Depreciation Depreciation Disposal Group, contract price Disposal Group, Including Discontinued Operation, Consideration (Loss) gain on disposal of properties Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal Disposal group consideration, net Disposal group consideration, net Total consideration Business Acquisition, Equity Interest Issued or Issuable, Number of Shares Business Acquisition, Equity Interest Issued or Issuable, Number of Shares Business Acquisition, Share Price Business Acquisition, Share Price Area of Real Estate Property Area of Real Estate Property Percentage Of Real Estate Areas Leased Percentage Of Real Estate Areas Leased Percentage of real estate areas leased. Leases [Abstract] Future minimum rentals to be received under noncancelable tenant operating leases Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block] Rentals under Operating Leases Leases of Lessor Disclosure [Text Block] Subsequent Events Note [Abstract] Subsequent Events Note [Abstract] Subsequent Event [Table] Subsequent Event [Table] Lender Name [Axis] Lender Name [Axis] Line of Credit Facility, Lender [Domain] Line of Credit Facility, Lender [Domain] Subsequent Event Type [Axis] Subsequent Event Type [Axis] Subsequent Event Type [Domain] Subsequent Event Type [Domain] Subsequent Event [Member] Subsequent Event [Member] Subsequent Event [Line Items] Subsequent Event [Line Items] Loans payable, net Secured Debt Organization and Basis of Presentation and Consolidation Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Wheeler Interests and Affiliates Wheeler Interests And Affiliates [Member] Wheeler interests and affiliates. Amounts paid to affiliates Related Party Transaction Amounts Paid To Related Party Related party transaction amounts paid to related party. Amounts received from affiliates Related Party Transaction Amounts Received From Related Party Related Party Transaction Amounts Received From Related Party Amounts payable to affiliates Related Party Transaction, Due from (to) Related Party Notes receivable, net Notes Receivable, Related Parties, Noncurrent Details of deferred costs, net of amortization and other assets Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Table Text Block] Future amortization of lease origination costs, financing costs and in place leases Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] Corporate general and administrative expenses Corporate General And Administrative Expense [Table Text Block] Corporate General And Administrative Expense [Table Text Block] Disaggregation of Company's revenue Disaggregation of Revenue [Table Text Block] ASSETS: Assets [Abstract] Investment properties, net Real Estate Investment Property, Net Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Restricted cash Restricted Cash and Cash Equivalents Rents and other tenant receivables, net Accounts Receivable, Net, Current Goodwill Goodwill Assets held for sale Disposal Group, Including Discontinued Operation, Assets, Current Above market lease intangible, net Off-market lease, Favorable This element represents an asset associated with the acquisition of an off-market lease when the terms of the lease are favorable to the market terms for the lease at the date of acquisition. Deferred costs and other assets, net Deferred Costs and Other Assets Total Assets Assets LIABILITIES: Liabilities [Abstract] Liabilities associated with assets held for sale Disposal Group, Including Discontinued Operation, Liabilities, Noncurrent Related party payables, net Accounts Payable, Related Parties Below market lease intangible, net Off-market Lease, Unfavorable Accounts payable, accrued expenses and other liabilities Other Accounts Payable and Accrued Liabilities Dividends payable Dividends Payable Total Liabilities Liabilities EQUITY: Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] Preferred stock, no par value Preferred Stock, Value, Outstanding Common Stock ($0.01 par value, 18,750,000 shares authorized, 8,947,416 and 8,744,189 shares issued and outstanding, respectively) Common Stock, Value, Issued Additional paid-in capital Additional Paid in Capital Accumulated deficit Retained Earnings (Accumulated Deficit) Total Shareholders’ Equity Stockholders' Equity Attributable to Parent Noncontrolling interests Stockholders' Equity Attributable to Noncontrolling Interest Total Equity Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Total Liabilities and Equity Liabilities and Equity Schedule of Investment properties Real Estate And Accumulated Depreciation Table [Table Text Block] Real estate and accumulated depreciation. Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block] Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block] Schedule of Unaudited Pro Forma Information Business Acquisition, Pro Forma Information [Table Text Block] Future Amortization Of Deferred Costs And Other Assets [Table] Future Amortization Of Deferred Costs And Other Assets [Table] Future amortization of deferred costs and other assets. 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] Leases In Place, net Leases, Acquired-in-Place [Member] Tenant Relationships, net Tenant Relationships [Member] Tenant relationships. Legal & Marketing Costs, net Legal And Marketing [Member] Legal and marketing. Ground lease sandwich interest Ground Lease Sandwich Interest [Member] Ground Lease Sandwich Interest [Member] Lease Origination Costs, net Lease Origination Costs [Member] Lease origination costs. Future Amortization Of Deferred Costs And Other Assets [Line Items] Future Amortization Of Deferred Costs And Other Assets [Line Items] Future amortization of deferred costs and other assets. For the remaining nine months ended December 31, 2018 Finite-Lived Intangible Assets, Amortization Expense, Remainder of Fiscal Year December 31, 2019 Finite-Lived Intangible Assets, Amortization Expense, Year Two December 31, 2020 Finite-Lived Intangible Assets, Amortization Expense, Year Three December 31, 2021 Finite-Lived Intangible Assets, Amortization Expense, Year Four December 31, 2022 Finite-Lived Intangible Assets, Amortization Expense, Year Five Thereafter Finite-Lived Intangible Assets, Amortization Expense, after Year Six Finite-Lived Intangible Assets, Amortization Expense, after Year Six Finite-Lived Intangible Assets, Amortization Expense, Rolling after Year Six Finite-Lived Intangible Assets, Amortization Expense, Rolling after Year Six Finite-Lived Intangible Assets, Amortization Expense, Rolling after Year Six Amortization of Intangible Assets Finite-Lived Intangible Assets, Net Notes Receivable [Abstract] Notes Receivable [Abstract] Area of land for sale Area of Land Note receivable, effective interest rate Related Party Transaction, Rate Note receivable, only interest payment rate Related Party Transaction, Periodic Interest Payment, Rate Related Party Transaction, Periodic Interest Payment, Rate Note receivable, interest due at maturity rate Related Party Transaction, Interest Payment Due At Maturity, Rate Related Party Transaction, Interest Payment Due At Maturity, Rate Deferred Costs And Other Assets [Table] Deferred Costs And Other Assets [Table] Deferred costs and other assets. Leases in place, net Legal and marketing costs, net Deferred Costs And Other Assets [Line Items] Deferred Costs And Other Assets [Line Items] Deferred costs and other assets. Tenant relationships, net Tenant Relationships Tenant relationships. Other Other Assets Lease origination costs, net Deferred Costs, Leasing, Net Deposits Deposits Assets Total Deferred Costs and Other Assets, net Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Products and Services [Axis] Products and Services [Axis] Products and Services [Domain] Products and Services [Domain] Minimum rent Minimum Rent [Member] Minimum Rent Tenant reimbursements Tenant Reimbursements [Member] Tenant Reimbursements Lease termination fees Lease Termination Fees [Member] Lease Termination Fees Percentage rent Percentage Rent [Member] Percentage Rent Asset management fees Asset Management Fees [Member] Asset Management Fees Commissions Commissions [Member] Commissions Development income Development Income [Member] Development Income Other Other Services [Member] Other Services Disaggregation of Revenue [Line Items] Disaggregation of Revenue [Line Items] Total Revenue from Contract with Customer, Excluding Assessed Tax Related Party Transactions Related Party Transactions Disclosure [Text Block] Discontinued Operations and Disposal Groups [Abstract] Disposal Groups, Including Discontinued Operations [Table] Disposal Groups, Including Discontinued Operations [Table] Starbucks And Verizon Building Starbucks And Verizon Building [Member] Starbucks and verizon building. Discontinued Operations, Disposed of by Sale Discontinued Operations, Disposed of by Sale [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] Gain on disposal of properties Gain (Loss) on Disposition of Real Estate, Discontinued Operations Disposal Group, Including Discontinued Operation, Assets [Abstract] Disposal Group, Including Discontinued Operation, Assets [Abstract] Investment properties, net Disposal Group, Including Discontinued Operation, Property, Plant and Equipment, Current Total assets held for sale Disposal Group, Including Discontinued Operation, Liabilities [Abstract] Disposal Group, Including Discontinued Operation, Liabilities [Abstract] Loans payable Disposal Group, Including Discontinued Operation, Other Liabilities Accounts payable Disposal Group, Including Discontinued Operation, Accounts Payable Total liabilities associated with assets held for sale Discontinued Operation, Income (Loss) from Discontinued Operation Disclosures [Abstract] Discontinued Operation, Income (Loss) from Discontinued Operation Disclosures [Abstract] Revenues Disposal Group, Including Discontinued Operation, Revenue Expenses Disposal Group, Including Discontinued Operation, Operating Expense Operating income Disposal Group, Including Discontinued Operation, Operating Income (Loss) Interest expense Disposal Group, Including Discontinued Operation, Interest Expense Income from discontinued operations before gain on disposal of properties Discontinued Operation, Income (Loss) from Discontinued Operation, Before Gain on Disposal Discontinued Operation, Income (Loss) from Discontinued Operation, Before Gain on Disposal Gain on disposal of properties Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax Net Income from Discontinued Operations Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax Debt Disclosure [Abstract] For the remaining nine months ended December 31, 2018 Long-term Debt, Maturities, Repayments of Principal, Remainder of Fiscal Year December 31, 2019 Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months December 31, 2020 Long-term Debt, Maturities, Repayments of Principal in Year Two December 31, 2021 Long-term Debt, Maturities, Repayments of Principal in Year Three December 31, 2022 Long-term Debt, Maturities, Repayments of Principal in Year Four December 31, 2023 Long-term Debt, Maturities, Repayments of Principal in Year Five Thereafter Long-term Debt, Maturities, Repayments of Principal after Year Five Total principal repayments and debt maturities Long-term Debt, Gross Summary of Significant Accounting Policies Significant Accounting Policies [Text Block] Summary of Loans Payable Schedule of Debt [Table Text Block] Summary of Company's Scheduled Principal Repayments on Indebtedness Schedule of Maturities of Long-term Debt [Table Text Block] Statement of Stockholders' Equity [Abstract] Equity Components [Axis] Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Total Shareholders’ Equity Parent [Member] Preferred Stock Preferred Stock [Member] Additional Paid-in Capital Additional Paid-in Capital [Member] Accumulated Deficit Retained Earnings [Member] Noncontrolling Interests Noncontrolling Interest [Member] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Beginning balance (in shares) Shares, Outstanding Beginning balance Accretion of Series B Preferred Stock discount Preferred Stock, Accretion of Redemption Discount Conversion of convertible securities into common stock, shares Stock Issued During Period, Shares, Conversion of Convertible Securities Conversion of senior convertible notes to Common Stock Stock Issued During Period, Value, Conversion of Convertible Securities Conversion of operating partnership units into common stock, shares Stock Issued During Period, Shares, Conversion of Units Conversion of operating partnership units to Common Stock Stock Issued During Period, Value, Conversion of Units Issuance of common stock under Share Incentive Plan, shares Stock Issued During Period, Shares, Share-based Compensation, Gross Issuance of Common Stock under Share Incentive Plan Stock Issued During Period, Value, Share-based Compensation, Net of Forfeitures Issuance of Common Stock for acquisition of JANAF (in shares) Stock Issued During Period, Shares, Acquisitions Issuance of Common Stock for acquisition of JANAF Stock Issued During Period, Value, Acquisitions Adjustment for noncontrolling interest in operating partnership Adjustments To Additional Paid In Capital Adjustment For Noncontrolling Interest In Operating Partnership Adjustments to additional paid in capital adjustment for non-controlling interest in operating partnership. Dividends and distributions Dividends Net loss Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Ending balance (in shares) Ending balance Commitments and Contingencies Disclosure [Abstract] Loss Contingencies [Table] Loss Contingencies [Table] Northeast Northeast [Member] Northeast. Mid Atlantic Mid Atlantic [Member] Mid Atlantic. Southeast Southeast [Member] Southeast. Southwest Southwest [Member] Southwest. Loss Contingencies [Line Items] Loss Contingencies [Line Items] Percentage accounted by properties of its annualized base rent Percentage Accounted By Properties Of Its Annualized Base Rent Percentage accounted by properties of its annualized base rent. Ground leases expense Ground Leases Expense Ground leases expense. Ground lease expense rent percentage Ground Leases Expense Percentage Rent Ground Leases Expense Percentage Rent Investment Properties Investment, Policy [Policy Text Block] Cash and Cash Equivalents and Restricted Cash Cash and Cash Equivalents, Policy [Policy Text Block] Tenant Receivables and Unbilled Rent Trade and Other Accounts Receivable, Policy [Policy Text Block] Goodwill Goodwill and Intangible Assets, Goodwill, Policy [Policy Text Block] Note Receivable Receivables, Policy [Policy Text Block] Above and Below Market Lease Intangibles, Net above and below market lease intangibles, policy [Policy Text Block] above and below market lease intangibles [Policy Text Block] Deferred Costs and Other Assets, Net Deferred Costs And Other Assets Policy [Policy Text Block] Deferred costs and other assets policy. Revenue Recognition Revenue Recognition, Policy [Policy Text Block] Lease Contract Revenue Revenue Recognition Leases, Operating [Policy Text Block] Use of Estimates Use of Estimates, Policy [Policy Text Block] Advertising Costs Advertising Costs, Policy [Policy Text Block] Asset Held for Sale and Discontinued Operations Real Estate Held for Development and Sale, Policy [Policy Text Block] Income Taxes Income Tax, Policy [Policy Text Block] Taxable REIT Subsidiary Cost Allocation Taxable REIT Subsidiary Cost Allocation [Policy Text Block] Taxable REIT Subsidiary Cost Allocation [Policy Text Block] Financial Instruments Fair Value of Financial Instruments, Policy [Policy Text Block] Noncontrolling interests Noncontrolling Interests Policy [Policy Text Block] Noncontrolling interests policy. Recent Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Lumber River Lumber river [Member] Lumber river [Member] Monarch Bank Line Of Credit Monarch Bank Line Of Credit [Member] Monarch bank line of credit. Senior convertible notes Convertible Senior Notes [Member] Convertible senior notes. Harbor Point Harbor Point [Member] Harbor Point [Member] Perimeter Square Perimeter Square [Member] Perimeter square. Riversedge North Riversedge North [Member] Riversedge north. Monarch Bank Building Monarch Bank Building [Member] Monarch bank building . DF I-Moyock DF I-Moyock [Member] DF I-Moyock [Member] Rivergate Rivergate [Member] Rivergate [Member] LaGrange Marketplace LaGrange Marketplace [Member] LaGrange Marketplace [Member] Folly Road Folly Road [Member] Folly Road [Member] Columbia Fire House construction loan Columbia Fire House Construction Loan [Member] Columbia Fire House Construction Loan [Member] Shoppes at TJ Maxx Shoppes At Tj Maxx [Member] Shoppes at TJ Maxx. JANAF Bravo JANAF Bravo [Member] JANAF Bravo [Member] Walnut Hill Plaza Walnut Hill Plaza [Member] Walnut hill plaza. Twin City Commons Twin City Commons [Member] Twin city commons. Shoppes at Eagle Harbor Shoppes At Eagle Harbor [Member] Shoppes at eagle harbor. Tampa Festival Tampa Festival [Member] Tampa festival. Forrest Gallery Forrest Gallery Shopping Center [Member] Forrest gallery shopping center. South Carolina Food Lions Note South Carolina Food Lions Note [Member] South carolina food lions note. Cypress Shopping Center Cypress Shopping Center [Member] Cypress Shopping Center [Member] Port Crossing Port Crossing Shopping Center [Member] Port Crossing Shopping Center [Member] Freeway Junction Freeway Junction [Member] Freeway Junction [Member] Harrodsburg Marketplace Harrodsburg Marketplace [Member] Harrodsburg Marketplace [Member] Graystone Crossing Graystone Crossing [Member] Graystone Crossing [Member] Bryan Station Bryan Station [Member] Bryan Station [Member] Crockett Square Crockett Square [Member] Crockett Square [Member] Pierpont Centre Pierpont Centre [Member] Pierpont Centre [Member] Alex City Marketplace Alex City Marketplace [Member] Alex City Marketplace [Member] Butler Square Butler Square [Member] Butler Square [Member] Brook Run Shopping Center Brook Run Shopping Center [Member] Brook Run Shopping Center [Member] Beaver Ruin Village I and II Beaver Village I and II [Member] Beaver Village I and II [Member] Sunshine Shopping Plaza Sunshine Plaza [Member] Sunshine Plaza [Member] Barnett Portfolio Barnett Portfolio [Member] Barnett Portfolio [Member] Fort Howard Shopping Center Ft. Howard Square [Member] Ft. Howard Square [Member] Conyers Crossing Grove Park Shopping Center Grove Park Shopping Center [Member] Grove Park Shopping Center [Member] Parkway Plaza Parkway Plaza Shopping Center [Member] Parkway Plaza Shopping Center Winslow Plaza Winslow Plaza Shopping Center [Member] Winslow plaza shopping center. JANAF BJ's JANAF BJ's [Member] JANAF BJ's [Member] Chesapeake Square Chesapeake Square [Member] Chesapeake Square [Member] Berkley/Sangaree/Tri-County Sagaree/Tri-County Associates/Berkley [Member] Sagaree/Tri-County Associates/Berkley Riverbridge Riverbridge [Member] Riverbridge [Member] Franklin Franklin [Member] Franklin [Member] Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] Line of Credit Line of Credit [Member] KeyBank Line of Credit KeyBank December Maturing July 2018 [Member] [Member] KeyBank December Maturing July 2018 [Member] KeyBank Line of Credit Maturing December 2019 KeyBank Maturing December 2019 [Member] KeyBank Maturing December 2019 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] Mortgage Loans Payable, Monthly Payment Interest Only Debt Instrument, Payment Terms Debt Instrument, Basis Spread on Variable Rate Debt Instrument, Basis Spread on Variable Rate Mortgages and other indebtedness Secured debt, gross of unamortized debt issuance cost Secured debt, gross of unamortized debt issuance cost Secured debt, gross of unamortized debt issuance cost Deferred Finance Costs, Net Debt Issuance Costs, Net Income Statement [Abstract] REVENUE: Revenues [Abstract] Rental revenues Operating Leases, Income Statement, Lease Revenue Asset management fees Property Management Fee Revenue Commissions Fees and Commissions, Other Tenant reimbursements Tenant Reimbursements Development and other revenues Other Revenue, Net Total Revenue Revenues OPERATING EXPENSES: Operating Expenses [Abstract] Property operations Property Operating Costs The aggregate costs of operating a property, including expenses associated with the grounds, landscaping, insurance, management and utilities. Non-REIT management and leasing services Asset Management Costs Depreciation and amortization Depreciation, Depletion and Amortization, Nonproduction Provision for credit losses Corporate general & administrative Total Operating Expenses Operating Expenses Gain on disposal of properties Gain (Loss) on Sale of Properties Operating Income Operating Income (Loss) Interest income Interest Income, Operating Interest expense Interest Expense Net Loss from Continuing Operations Before Income Taxes Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest Income tax expense Income Tax Expense (Benefit) Net Loss from Continuing Operations Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest Income from discontinued operations Discontinued Operation, Income (Loss) from Discontinued Operation During Phase-out Period, before Income Tax Net Loss Less: Net loss attributable to noncontrolling interests Income (Loss) from Continuing Operations, Net of Tax, Attributable to Noncontrolling Interest Net Loss Attributable to Wheeler REIT Net Income (Loss) Attributable to Parent Preferred stock dividends Preferred Stock Dividends, Income Statement Impact Net Loss Attributable to Wheeler REIT Common Shareholders Net Income (Loss) Available to Common Stockholders, Basic Loss per share from continuing operations (basic and diluted) Income (Loss) from Continuing Operations, Per Basic and Diluted Share Income per share from discontinued operations Discontinued Operation, Income (Loss) from Discontinued Operation, Net of Tax, Per Basic and Diluted Share Loss per share, basic and diluted (in usd per share) Earnings Per Share, Basic and Diluted Weighted-average number of shares: Earnings Per Share, Basic and Diluted, Other Disclosures [Abstract] Basic and Diluted (in shares) Weighted Average Number of Shares Outstanding, Basic and Diluted Dividends declared per common share (in usd per share) Common Stock, Dividends, Per Share, Declared Land Land [Member] Investment properties at cost Real Estate Investment Property, at Cost Land held for development Land Available for Development Less accumulated depreciation and amortization Real Estate Investment Property, Accumulated Depreciation Investment properties, net Common unit and common shareholders Dividends, Common Stock, Cash Preferred shareholders Dividends, Preferred Stock, Cash Total Potentially dilutive shares Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block] Dividends declared Dividends Declared [Table Text Block] Loans Payable Mortgage Notes Payable Disclosure [Text Block] Document And Entity Information [Abstract] Document and entity information. 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 Document Type Document Type Document Period End Date Document Period End Date Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Amendment Flag Amendment Flag Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Statement of Cash Flows [Abstract] CASH FLOWS FROM OPERATING ACTIVITIES: Net Cash Provided by (Used in) Operating Activities [Abstract] Net loss Adjustments to reconcile consolidated net loss to net cash from operating activities Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Amortization Amortization Loan cost amortization Amortization of Debt Issuance Costs and Discounts Above (below) market lease amortization, net Amortization of above and below Market Leases Share-based compensation Share-based Compensation Gain on disposal of properties Gain on disposal of properties-discontinued operations Changes in assets and liabilities, net of acquisitions Increase (Decrease) in Operating Capital [Abstract] Rent and other tenant receivables, net Increase (Decrease) in Leasing Receivables Unbilled rent Increase (Decrease) in Unbilled Receivables Related party receivables Increase (Decrease) in Accounts Receivable, Related Parties Deferred costs and other assets, net Increase (Decrease) in Other Operating Assets Accounts payable, accrued expenses and other liabilities Increase (Decrease) in Accounts Payable and Accrued Liabilities Net operating cash flows provided by discontinued operations Cash Provided by (Used in) Operating Activities, Discontinued Operations Net cash provided by operating activities CASH FLOWS FROM INVESTING ACTIVITIES: Net Cash Provided by (Used in) Investing Activities [Abstract] Investment property acquisitions Payments to Acquire Commercial Real Estate Capital expenditures Payments to Acquire Property, Plant, and Equipment Cash received from disposal of properties Proceeds from Sale of Other Real Estate Cash received from disposal of properties-discontinued operations Proceeds from Sale of Property Held-for-sale Net cash (used in) provided by investing activities CASH FLOWS FROM FINANCING ACTIVITIES: Net Cash Provided by (Used in) Financing Activities [Abstract] Payments for deferred financing costs Payments of Financing Costs Dividends and distributions paid Payments of Dividends Proceeds from sales of Preferred Stock, net of expenses Proceeds from Issuance of Preferred Stock and Preference Stock Loan proceeds Proceeds from Lines of Credit Loan principal payments Repayments of Secured Debt Net financing cash flows used in discontinued operations Cash Provided by (Used in) Financing Activities, Discontinued Operations Net cash provided (used in) by financing activities Net Cash Provided by (Used in) Financing Activities Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents beginning of period Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Excluding Exchange Rate Effect Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Excluding Exchange Rate Effect CASH, CASH EQUIVALENTS AND RESTRICTED CASH, end of period Supplemental Disclosures: Supplemental Cash Flow Elements [Abstract] Non-Cash Transactions: Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] Debt assumed for acquisition Noncash or Part Noncash Acquisition, Debt Assumed Conversion of common units to common stock Conversion of Stock, Amount Converted Conversion of Series B Preferred Stock to Common Stock Conversion of Stock, Amount Issued Conversion of senior convertible debt into common stock Debt Conversion, Converted Instrument, Amount Issuance of Common Stock for acquisition Noncash or Part Noncash Acquisition, Interest Acquired, Value Noncash or Part Noncash Acquisition, Interest Acquired, Value Accretion of preferred stock discounts Other Cash Transactions: Supplemental Cash Flow Information [Abstract] Cash paid for taxes Income Taxes Paid Cash paid for interest Interest Paid Schedule of payments for ground leases Schedule of payments for ground leases [Table Text Block] Schedule of ground lease payments [Table Text Block] Schedule of future minimum rental payments due Schedule Of Future Minimum Rental Payment For Ground Lease Table [Table Text Block] Schedule of future minimum rental payment for ground lease table. Assets Held for Sale Disposal Groups, Including Discontinued Operations, Disclosure [Text Block] Equity and Mezzanine Equity Stockholders' Equity Note Disclosure [Text Block] Rental revenues Business Acquisition, Pro Forma Revenue Net loss from continuing operations Business Acquisition, Pro Forma Net Income (Loss) Net loss attributable to Wheeler REIT Business Acquisitions Pro Forma Net Income Loss Attributable To Parent The pro forma net Income or Loss for the period attributable to the parent as if the business combination or combinations had been completed at the beginning of a period. Net loss attributable to Wheeler REIT common shareholders Business Acquisitions Pro Forma Net Income Loss Available to Common Shareholders The pro forma net Income or Loss for the period available to common shareholders as if the business combination or combinations had been completed at the beginning of a period. Basic loss per share Business Acquisition, Pro Forma Earnings Per Share, Basic Diluted loss per share Business Acquisition, Pro Forma Earnings Per Share, Diluted Major Property Class [Axis] Major Property Class [Axis] Major Property Class [Domain] Major Property Class [Domain] Amscot Building Amscot Building [Member] Amscot building. Beaver Ruin Village Beaver Ruin Village [Member] Beaver Ruin Village [Member] Beaver Ruin Village II Beaver Ruin Village II [Member] Beaver Ruin Village II [Member] WHLR Charleston Office WHLR Charleston Office [Member] WHLR Charleston Office [Member] Moncks Corner Moncks Corner [Member] Moncks Corner [Member] Devine Street Devine Street [Member] Devine Street [Member] Operating leases, rent expense, net Operating Leases, Rent Expense, Net Long term ground leases expiration period Long Term Ground Leases Expiration Period Long term ground leases expiration period. Ground lease and operating lease rent expense, net Ground lease and operating lease rent expense, net Ground lease and operating lease rent expense, net Equity [Table] Equity [Table] Equity. Sale of Stock [Axis] Sale of Stock [Axis] Sale of Stock [Domain] Sale of Stock [Domain] Equity Distribution Agreement Private Placement [Member] Series B Convertible Preferred Stock Series B Convertible Preferred Stock [Member] Series B Convertible Preferred Stock [Member] Redeemable Preferred Stock Redeemable Preferred Stock [Member] 2015 Share Incentive Plan 2015 Share Incentive Plan [Member] 2015 Share Incentive Plan [Member] 2016 Share Incentive Plan 2016 Share Incentive Plan [Domain] 2016 Share Incentive Plan [Domain] Equity [Line Items] Equity [Line Items] Equity. Stock split conversion ratio Stockholders' Equity Note, Stock Split, Conversion Ratio Preferred Stock, Liquidation Preference Per Share Preferred Stock, Liquidation Preference Per Share Preferred Stock, Liquidation Preference, Value Preferred Stock, Dividend Rate, Percentage Preferred Stock, Dividend Rate, Percentage Temporary Equity, Shares Outstanding Temporary Equity, Shares Outstanding Conversion Price Percentage Conversion Price Percentage Conversion Price Percentage Preferred stock shares issued (in shares) Convertible Preferred Stock, Terms of Conversion Convertible Preferred Stock, Terms of Conversion Preferred Stock Adjusted Conversion Price Per Share Preferred Stock Adjusted Conversion Price Per Share Preferred stock adjusted conversion price per share. Preferred Stock, Redemption Price Per Share Preferred Stock, Redemption Price Per Share Temporary Equity, Minimum Asset Coverage Ratio Temporary Equity, Minimum Asset Coverage Ratio Temporary Equity, Minimum Asset Coverage Ratio Temporary Equity, Redeemable Per Share Price After Due to Failure to Comply With Minimum Coverage Ratio Temporary Equity, Redeemable Per Share Price After Due to Failure to Comply With Minimum Coverage Ratio Temporary Equity, Redeemable Per Share Price After Due to Failure to Comply With Minimum Coverage Ratio Temporary Equity, Period to Cure Minimum Asset Coverage Ratio Temporary Equity, Period to Cure Minimum Asset Coverage Ratio Temporary Equity, Period to Cure Minimum Asset Coverage Ratio Class of Warrant or Right, Number of Securities Called by Warrants or Rights Class of Warrant or Right, Number of Securities Called by Warrants or Rights Class of Warrant or Right, Number of Securities Called by Each Warrant or Right Class of Warrant or Right, Number of Securities Called by Each Warrant or Right Class of Warrant or Right, Exercise Price of Warrants or Rights Class of Warrant or Right, Exercise Price of Warrants or Rights Preferred Stock, Initial Liquidation Preference Per Share Preferred Stock, Initial Liquidation Preference Per Share Preferred Stock, Initial Liquidation Preference Per Share Preferred Stock, Dividend Over Initial Rate, Percentage Preferred Stock, Dividend Over Initial Rate, Percentage Preferred Stock, Dividend Over Initial Rate, Percentage Convertible Preferred Stock Conversion Price Convertible Preferred Stock Conversion Price Convertible preferred stock conversion price. Temporary Equity, Accretion to Redemption Value Temporary Equity, Accretion to Redemption Value Maximum number of shares authorized under Share Incentive Plan (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized Value of stock issued Share Incentive Plan Stock Issued During Period, Value, Share-based Compensation, Gross Shares available for issuance under Share Incentive Plan (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant For the remaining nine months ended December 31, 2018 Operating Leases, Future Minimum Payments Receivable, Remainder of Fiscal Year December 31, 2019 Operating Leases, Future Minimum Payments Receivable, Current December 31, 2020 Operating Leases, Future Minimum Payments Receivable, in Two Years December 31, 2021 Operating Leases, Future Minimum Payments Receivable, in Three Years December 31, 2022 Operating Leases, Future Minimum Payments Receivable, in Four Years December 31, 2023 Operating Leases, Future Minimum Payments Receivable, in Five Years Thereafter Operating Leases, Future Minimum Payments Receivable, Thereafter Total minimum rents Operating Leases, Future Minimum Payments Receivable For the remaining nine months ended December 31, 2018 Operating Leases, Future Minimum Payments, Remainder of Fiscal Year December 31, 2019 Operating Leases, Future Minimum Payments Due, Next Twelve Months December 31, 2020 Operating Leases, Future Minimum Payments, Due in Two Years December 31, 2021 Operating Leases, Future Minimum Payments, Due in Three Years December 31, 2022 Operating Leases, Future Minimum Payments, Due in Four Years December 31, 2023 Operating Leases, Future Minimum Payments, Due in Five Years Thereafter Operating Leases, Future Minimum Payments, Due Thereafter Total minimum lease payments Operating Leases, Future Minimum Payments Due Subsequent Events [Text Block] Subsequent Events [Text Block] Credit Facility [Axis] Credit Facility [Axis] Credit Facility [Domain] Credit Facility [Domain] Revolving Credit Facility [Member] Revolving Credit Facility [Member] Scenario [Axis] Scenario [Axis] Scenario, Unspecified [Domain] Scenario, Unspecified [Domain] Scenario, Forecast [Member] Scenario, Forecast [Member] Shoppes At Eagle Harbor KeyBank KeyBank [Member] KeyBank [Member] Amended and Restated Credit Agreement [Member] Amended and Restated Credit Agreement [Member] Amended and Restated Credit Agreement Maturity Date January 2026 [Member] Maturity Date January 2023 [Member] Maturity Date January 2023 [Member] Maturity Date January 2023 [Member] Line of Credit Facility, Maximum Borrowing Capacity Line of Credit Facility, Maximum Borrowing Capacity Line of Credit Facility, Maximum Borrowing Capacity, Accordion Feature Line of Credit Facility, Maximum Borrowing Capacity, Accordion Feature Line of Credit Facility, Maximum Borrowing Capacity, Accordion Feature Line of Credit Facility, Current Borrowing Capacity Line of Credit Facility, Current Borrowing Capacity Line of Credit Facility, Extension Period Line of Credit Facility, Extension Period Line of Credit Facility, Extension Period Debt Instrument, Floor Rate Debt Instrument, Floor Rate Debt Instrument, Floor Rate Line of Credit Facility, Unused Capacity, Commitment Fee Percentage Line of Credit Facility, Unused Capacity, Commitment Fee Percentage Line of Credit Facility, Liquidity Requirement Line of Credit Facility, Liquidity Requirement Line of Credit Facility, Liquidity Requirement Reduction in Line of Credit Facility, Thereafter Line of Credit Facility, Current Borrowing Capacity Reduction Thereafter Line of Credit Facility, Current Borrowing Capacity Reduction Thereafter Reduction in Liquidity Requirement, Thereafter Line of Credit Facility, Liquidity Requirement Reduction Thereafter Line of Credit Facility, Liquidity Requirement Reduction Thereafter Line of Credit Facility, Fair Value of Amount Outstanding Line of Credit Facility, Fair Value of Amount Outstanding Number of collateral properties Number of collateral properties The number of properties collateralizing a loan. Line of Credit Facility, Commitment Fee Percentage Line of Credit Facility, Commitment Fee Percentage Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months Long-term Debt, Maturities, Repayments of Principal in Next Rolling Twelve Months Long-term Line of Credit Long-term Line of Credit Number of Undeveloped Land Parcels Number of Undeveloped Land Parcels Number of Undeveloped Land Parcels Summary of financial information of discontinued operations Disposal Groups, Including Discontinued Operations [Table Text Block] Number of real estate properties Number of Real Estate Properties Number of office buildings Number Of Office Buildings Number of office buildings. Undeveloped land parcels UndevelopedLandParcels The number of undeveloped land parcels held by the Trust. Number of real estate properties, redeveloped Number of Real Estate Properties, Redeveloped Number of Real Estate Properties, Redeveloped Notes Receivable Loans, Notes, Trade and Other Receivables Disclosure [Text Block]