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[Member] Roanoke, VA (FDX Ground) [Member] Property, Plant and Equipment, Type [Axis] Land [Member] Building [Member] In-Place Leases [Member] Kansas City, MO [Member] Four Properties [Member] Series A Preferred Stock [Member] Series B Preferred Stock [Member] Equity Components [Axis] Preferred Stock [Member] Common Stock [Member] Debt Security Category [Axis] Securities One [Member] Securities Two [Member] Securities Three [Member] Securities Four [Member] Range [Axis] Minimum [Member] Maximum [Member] Plan Name [Axis] Preferred Stock ATM Program [Member] Debt Instrument [Axis] Mortgage Notes Payable Fair Value [Member] Measurement Frequency [Axis] Fair Value Measurements [Member] Fair Value, Hierarchy [Axis] Level 1 [Member] Level 2 [Member] Level 3 [Member] Financial Instrument [Axis] Property Purchase Agreement [Member] Industrial Building [Member] Four Real Estate Propeties [Member] Edinburg, TX (FedEx Ground) [Member] Legal Entity [Axis] Fedex Ground Package System Inc. [Member] Scenario [Axis] Pro Forma [Member] Lease Arrangement, Type [Axis] Acquired in-place Leases [Member] Fiscal Year 2019 [Member] Fiscal Year 2020 [Member] Fiscal Year 2021 [Member] Fiscal Year 2022 [Member] Topeka, KS [Member] Rockford, IL (Sherwin-Williams Co.) [Member] Edinburg, TX [Member] Corpus Christi, TX [Member] Monroe, OH (Cincinnati) [Member] Cincinnati, OH [Member] Imperial, PA (Pittsburgh) [Member] Burlington WA (Seattle/Everett), WA [Member] Colorado Springs, CO [Member] Kenton, OH [Member] Stow, OH [Member] FDX and Subsidiaries [Member] Concentration Risk Type [Axis] Rental And Reimbursement Revenue [Member] Lease Concentration Risk [Member] Milwaukee Electric Tool Corporation [Member] BMO Capital Markets [Member] Margin Loans [Member] Short-term Debt, Type [Axis] Mortgage Notes Payable [Member] Long-Term Debt, Type [Axis] Richfield, OH (Cleveland) [Member] Tampa, FL (FDX) [Member] West Chester Twp., OH (Cincinnati) [Member] Orlando, FL [Member] Tampa, FL (FDX Ground) [Member] Lebanon, TN (Nashville) [Member] Ft. Mill, SC (Charlotte, NC) [Member] Denver, CO [Member] Hanahan, SC (Charleston)(FDX Ground) [Member] Augusta, GA (FDX Ground) [Member] Huntsville, AL [Member] Colorado Springs, CO [Member] Streetsboro, OH (Cleveland) [Member] Waco, TX [Member] Houston, TX [Member] Tolleson, AZ (Phoenix) [Member] Edwardsville, KS (Kansas City) (International Paper) [Member] Spring, TX (Houston) [Member] Memphis, TN [Member] Indianapolis, IN [Member] Frankfort, KY (Lexington) [Member] Carrollton, TX (Dallas) [Member] Altoona, PA [Member] Green Bay, WI [Member] Stewartville MN (Rochester) [Member] Carlstadt (New York, NY), NJ [Member] Roanoke, VA (FDX Ground) [Member] Livonia, MI (Detroit) [Member] Olive Branch (Memphis, TN), MS (Milwaukee Tool) [Member] Tulsa, OK [Member] Oklahoma City, OK (Bunzl) [Member] Lindale, TX (Tyler) [Member] Sauget, IL (St. Louis, MO) [Member] Jacksonville, FL (FDX Ground) [Member] Greenwood, IN [Member] Concord, NC (Charlotte) [Member] Covington, LA (New Orleans) [Member] Louisville, KY [Member] Davenport, FL (Orlando) [Member] Hamburg, NY (Buffalo) [Member] Mesquite, TX (Dallas) [Member] Aiken, SC (Augusta, GA) [Member] Homestead, FL (Miami) [Member] Concord, NC (Charlotte) One [Member] Buckner, KY (Louisville) [Member] Sale of Stock [Axis] Employee Stock [Member] Amended and Restated 2007 Incentive Award Plan [Member] Award Type [Axis] Restricted Stock Units (RSUs) [Member] Related Party [Axis] UMH Properties, Inc [Member] Lease Agreement Year 1 [Member] Lease Agreement Year 2 [Member] Lease Agreement Year 3 [Member] Lease Agreement Year 4 [Member] Lease Agreement Year 5 [Member] Lease Agreement Year 6 [Member] Lease Agreement Year 7 [Member] Title of Individual [Axis] Director [Member] New Buildings [Member] Building Improvements [Member] Tenant Improvements [Member] Real Estate, Type of Property [Axis] Monaca (Pittsburgh), PA [Member] Urbandale (Des Moines),IA [Member] Richland (Jackson), MS [Member] O'Fallon (St. Louis) MO [Member] Fayetteville, NC [Member] Schaumburg (Chicago), IL [Member] Burr Ridge (Chicago), IL [Member] Romulus (Detroit), MI [Member] Liberty (Kansas City), MO [Member] Omaha, NE [Member] Charlottesville, VA [Member] Jacksonville, FL (FDX) [Member] West Chester Twp. (Cincinnati), OH [Member] Richmond, VA [Member] St. Joseph, MO [Member] Newington (Hartford), CT [Member] Cudahy (Milwaukee), WI [Member] Beltsville (Washington DC), MD [Member] Granite City (St. Louis, MO), IL [Member] Winston-Salem, NC [Member] Elgin (Chicago), IL [Member] Tolleson (Phoenix), AZ [Member] Edwardsville (Kansas City), KS (Carlisle Tire) [Member] Hanahan (Charleston), SC (SAIC) [Member] Hanahan (Charleston), SC (FDX Ground) [Member] Augusta, GA (FDX Ground) [Member] Huntsville, AL [Member] Richfield (Cleveland), OH [Member] Griffin (Atlanta), GA [Member] Roanoke, VA (CHEP USA) [Member] Orion, MI [Member] Carlstadt (New York, NY) , NJ [Member] Wheeling (Chicago), IL [Member] Cheektowaga (Buffalo),NY [Member] Richmond, VA [Member] Montgomery (Chicago), IL [Member] Tampa, FL (Tampa Bay Grand Prix) [Member] Augusta (FDX) [Member] Lakeland, FL [Member] El Paso, TX [Member] Chattanooga, TN [Member] Bedford Heights (Cleveland), OH [Member] Punta Gorda, FL [Member] Cocoa [Member] Orlando, FL [Member] Topeka, KS [Member] Memphis, TN [Member] Houston, TX [Member] Carrollton (Dallas), TX [Member] Ft. Mill (Charlotte, NC), SC [Member] Lebanon (Nashville), TN [Member] Rockford, IL (Sherwin-Williams Co.) [Member] Edinburg, TX [Member] Streetsboro (Cleveland), OH [Member] Corpus Christi, TX [Member] Halfmoon (Albany), NY [Member] Lebanon (Cincinnati), OH [Member] Olive Branch (Memphis, TN), MS (Anda Pharmaceuticals Inc.) [Member] Oklahoma City, OK (FDX Ground) [Member] Waco, TX [Member] Livonia (Detroit), MI [Member] Olive Branch (Memphis, TN), MS (Milwaukee Tool) [Member] Green Bay, WI [Member] Stewartville (Rochester), MN [Member] Tulsa, OK [Member] Buckner (Louisville), KY [Member] Edwardsville (Kansas City), KS (Carlisle Tire) [Member] Altoona, PA [Member] Spring (Houston), TX [Member] Sauget (St. Louis, MO), IL [Member] Lindale (Tyler), TX [Member] Frankfort (Lexington), KY [Member] Jacksonville, FL (FDX Ground) [Member] Monroe (Cincinnati), OH [Member] Greenwood (Indianapolis), IN [Member] Ft. Worth (Dallas), TX [Member] Rockford, IL (Collins Aerospace Systems) [Member] Concord (Charlotte), NC [Member] Covington (New Orleans), LA [Member] Imperial (Pittsburgh), PA [Member] Burlington (Seattle/Everett), WA [Member] Davenport (Orlando), FL [Member] Olathe (Kansas City), KS [Member] Hamburg (Buffalo), NY [Member] Walker (Grand Rapids), MI [Member] Mesquite (Dallas), TX [Member] Aiken (Augusta, GA), SC [Member] Homestead (Miami), FL [Member] Concord (Charlotte), NC One [Member] Shopping Center [Member] Somerset, NJ [Member] Vacant Land [Member] Shelby County [Member] Industrial Buildings ,Shopping Center and Vacant Land [Member] Ridgeland (Jackson), MS [Member] Fayetteville, NC [Member] Richland (Jackson), MS [Member] Wheeling (Chicago), IL [Member] Cheektowaga (Buffalo), NY [Member] Montgomery (Chicago), IL [Member] Augusta, GA (FDX) [Member] Lakeland, FL [Member] El Paso, TX [Member] Chattanooga, TN [Member] Bedford Heights (Cleveland), OH [Member] Punta Gorda, FL [Member] Cocoa, FL [Member] Carrollton, (Dallas) TX [Member] Ft. Mill (Charlotte, NC), SC [Member] Lebanon (Nashville), TN [Member] Rockford, IL (Sherwin-Williams Co.) [Member] Streetsboro (Cleveland), OH [Member] Halfmoon (Albany), NY [Member] Olive Branch (Memphis, TN), MS (Anda Pharmaceuticals Inc. ) [Member] Buckner (Louisville), KY [Member] Edwardsville (Kansas City), KS (International Paper) [Member] Spring (Houston), TX [Member] Sauget (St. Louis, MO), IL [Member] Frankfort (Lexington), KY [Member] Monroe (Cincinnati), OH [Member] Ft. Worth (Dallas), TX [Member] Rockford, IL (Collins Aerospace Systems) [Member] Somerset, NJ [Member] Name of Property [Axis] Monaca (Pittsburgh), PA [Member] O'Fallon (St. Louis), MO [Member] Schaumburg (Chicago), IL [Member] Burr Ridge (Chicago), IL [Member] Romulus (Detroit), MI [Member] Liberty (Kansas City), MO [Member] Omaha, NE [Member] Charlottesville, VA [Member] Jacksonville, FL (FDX) [Member] West Chester Twp (Cincinnati), OH [Member] St. Joseph, MO [Member] Newington (Hartford), CT [Member] Cudahy (Milwaukee), WI [Member] Beltsville (Washington, DC), MD [Member] Granite City (St. Louis, MO), IL [Member] Winston-Salem, NC [Member] Elgin (Chicago), IL [Member] Tolleson (Phoenix), AZ [Member] Hanahan (Charleston), SC (SAIC) [Member] Hanahan (Charleston), SC (FDX Ground) [Member] Richfield (Cleveland), OH [Member] Griffin (Atlanta), GA [Member] Roanoke, VA (CHEP USA) [Member] Orion, MI [Member] Tampa, FL (Tampa Bay Grand Prix) [Member] Oklahoma City, OK (FDX Ground) [Member] Hamburg (Buffalo), NY [Member] Additional Paid in Capital [Member] Undistributed Income (Loss) [Member] Accumulated Other Comprehensive Income (Loss) [Member] Underwritten Public Offering [Member] At-The-Market Offerings [Member] Tolleson (Phoenix) [Member] Colorado Springs, CO [Member] Colorado Springs, CO [Member] Denver [Member] Newington (Hartford) [Member] Davenport (Orlando) [Member] Ft. Myers (Vacant) [Member] Ft. Myers (FDX Ground) [Member] Homestead (Miami) [Member] Jacksonville (FDX) [Member] Jacksonville (FDX Ground) [Member] Tampa (FDX Ground) [Member] Tampa (Tampa Bay Grand Prix) [Member] Augusta (FDX Ground) [Member] Griffin (Atlanta) [Member] Burr Ridge (Chicago) [Member] Elgin (Chicago) [Member] Granite City (St. Louis, MO) [Member] Montgomery (Chicago) [Member] Rockford (Collins Aerospace Systems) [Member] Rockford (Sherwin-Williams Co.) [Member] Sauget (St. Louis, MO) [Member] Schaumburg (Chicago) [Member] Wheeling (Chicago) [Member] Greenwood (Indianapolis) [Member] Indianapolis [Member] Urbandale (Des Moines) [Member] Edwardsville (Kansas City) (Carlisle Tire) [Member] Edwardsville (Kansas City) (International Paper) [Member] Olathe (Kansas City) [Member] Buckner (Louisville) [Member] Frankfort (Lexington) [Member] Louisville [Member] Covington (New Orleans) [Member] Beltsville (Washington, DC) [Member] Walker (Grand Rapids) [Member] Livonia (Detroit) [Member] Romulus (Detroit) [Member] Stewartville (Rochester) [Member] Olive Branch (Memphis, TN) (Anda Pharmaceuticals, Inc.) [Member] Olive Branch (Memphis, TN) (Milwaukee Tool) [Member] Richland (Jackson) [Member] Ridgeland (Jackson) [Member] Kansas City, MO (Bunzl) [Member] Kansas City (Kellogg) [Member] Liberty (Kansas City) [Member] O'Fallon (St. Louis) [Member] Carlstadt (New York, NY) [Member] Cheektowaga (Buffalo) [Member] Halfmoon (Albany) [Member] Hamburg (Buffalo) [Member] Orangeburg (New York) [Member] Concord (Charlotte) [Member] Concord (Charlotte) [Member] Bedford Heights (Cleveland) [Member] Cincinnati [Member] Kenton [Member] Lebanon (Cincinnati) [Member] Monroe (Cincinnati) [Member] Richfield (Cleveland) [Member] Stow [Member] Streetsboro (Cleveland) [Member] West Chester Twp. (Cincinnati) [Member] Oklahoma City (FDX Ground)[Member] Oklahoma City (Bunzl) [Member] Imperial (Pittsburgh) [Member] Monaca (Pittsburgh) [Member] Aiken (Augusta, GA) [Member] Ft. Mill (Charlotte, NC) [Member] Hanahan (Charleston) (SAIC) [Member] Hanahan (Charleston) (FDX Ground) [Member] Lebanon (Nashville) [Member] El Paso [Member] Ft. Worth (Dallas) [Member] Lindale (Tyler) [Member] Mesquite (Dallas) [Member] Mechanicsville (Richmond) [Member] Richmond [Member] Roanoke (CHEP USA) [Member] Roanoke (FDX Ground) [Member] Burlington (Seattle/Everett) [Member] Cudahy (Milwaukee) [Member] Tampa (FDX) [Member] Valuation Approach and Technique [Axis] Black-Scholes Option-Pricing Model [Member] Measurement Input Type [Axis] Dividend Yield [Member] Expected Life (Years) [Member] Risk - Free Interest Rate [Member] Expected Volatilty [Member] FDX [Member] Risk Free Interest [Member] Expected Lives [Member] Four Tenants With Lease [Member] Mobile [Member] Daytona Beach [Member] Braselton (Atlanta) [Member] Savannah [Member] Oklahoma City (Amazon) [Member] Charleston (FDX) [Member] Charleston (FDX Ground) [Member] Geographical [Axis] Charleston, SC (FedEx Corp) [Member] Oklahoma City, OK (Amazon.com Services Inc.) [Member] Savannah, GA (Shaw Industries) [Member] Daytona Beach, FL (B. Braun Medical Inc.) [Member] Mobile, AL (Amazon.com Services Inc.) [Member] Charleston, SC (Fedex Ground) [Member] Braselton, GA (Fedex Ground) [Member] Ft. Mill, SC (Fedex Ground) [Member] Kansas City, MO (Kellogg) [Member] Orangeburg, NY (Kellogg) [Member] Kellogg Sales Company [Member] Colorado Springs, CO (FedEx Ground) [Member] White Bear Lake, MN. [Member] Olive Branch (Memphis, TN), MS (Anda Pharmaceuticals) [Member] Rockford, IL (Collins Aerospace Systems) [Member] Ft. Myers, FL [Member] Charleston, SC (FDX) [Member] Oklahoma City, OK (Amazon) [Member] Savannah, GA [Member] Daytona Beach, FL [Member] Mobile, AL [Member] Charleston, SC (FDX Ground) [Member] Braselton (Atlanta), GA [Member] Securities Five [Member] Related Party Transaction [Axis] CBL & Associates Properties, Inc. [Member] Series D Preferred Stock [Member] Cedar Realty Trust, Inc [Member] Dynex Capital, Inc [Member] iStar Financial, Inc [Member] Series I Preferred Stock [Member] Franklin Street Properties [Member] Government Properties Income Trust [Member] Industrial Logistics Property Trust [Member] Kimco Realty Corporation [Member] Pennsylvania Real Estate Investment Trust [Member] Select Income REIT [Member] Senior Housing Property Trust [Member] VEREIT, Inc. [Member] Washington Prime Group, Inc [Member] Government National Mortgage Association [Member] Available-for-sale Securities [Member] Investors Real Estate Trust [Member] Series E Preferred Stock [Member] Series F Preferred Stock [Member] Summit Hotel Properties, Inc [Member] Seven Mortgages Loans One [Member] Seven Mortgages Loans Two [Member] Seven Mortgages Loans Three [Member] Seven Mortgages Loans Four [Member] Seven Mortgages Loans Five [Member] Seven Mortgages Loans Six [Member] Seven Mortgages Loans Seven [Member] Seven Mortgages Loans [Member] 2018 Repayment of Mortgage Loans [Member] 2017 Repayment of Mortgage Loans [Member] Report Date [Axis] October 9, 2018 [Member] Olive Branch, MS (Memphis, TN)(Anda Pharmaceuticals, Inc.) [Member] Ft. Worth, TX (Dallas) [Member] Olathe, KS (Kansas City) [Member] Ft. Myers, FL (FDX Ground) [Member] Walker, MI (Grand Rapids) [Member] Braselton, GA (Atlanta) [Member] Non-Employee Directors [Member] Board of Directors [Member] Unrestricted Stock [Member] Stock Option One [Member] Stock Option Two [Member] Stock Option Three [Member] Stock Option Four [Member] Stock Option Five [Member] Stock Option Six [Member] Stock Option Seven [Member] Stock Option Eight [Member] Stock Option Nine [Member] Dividend Reinvestment and Stock Purchase Plan [Member] Lease Agreement [Member] Board of Directors [Member] Shareholders [Member] October 1, 2018 [Member] October 2018 [Member] Underwriters [Member] Series A Cumulative Redeemable Preferred Stock [Member] Series B Cumulative Redeemable Preferred Stock [Member] Series C Cumulative Redeemable Preferred Stock [Member] Fiscal Year 2018 [Member] On and After September 15, 2021 [Member] December 31 [Member] March 31 [Member] September 30 [Member] June 30 [Member] Dividends [Axis] Dividend Distribution One [Member] Dividend Distribution Two [Member] Dividend Distribution Three [Member] Dividend Distribution Four [Member] Monroe, OH [Membe] Subsequent Event Type [Axis] Subsequent Event [Member] Trenton, NJ [Member] Award Date [Axis] Fiscal 2019 [Member] Mechanicsville (Richmond), VA [Member] Tampa, FL (FDX Ground) [Member] Antidilutive Securities [Axis] Stock Options [Member] FDX Subsidiaries [Member] Preferred Stock ATM Program [Member] Mortgage Loan Subsequently Fiscal Yearend [Member December 31, 2018 [Member] Mortgage Loan Subsequently Fiscal Yearend [Member] Tampa, FL (FDX) [Member] Edwardsville (Kansas City), KS (Carlisle Tire) [Member] October 1, 2018 [Member] Hamburg, NY (FedEx Ground) [Member] Ft. Myers, FL (FedEx Ground) [Member] Walker, MI (FedEx Ground) [Member] Mesquite, TX (FedEx Ground) [Member] Aiken, SC (Autoneum) [Member] Homestead, FL (FedEx Ground) [Member] Oklahoma City, OK (FedEx Ground) [Member] Concord, NC (FedEx Ground) [Member] Kenton, OH (International Paper) [Member] Stow, OH (Mickey Thompson) [Member] Indianapolis, IN (FedEx Ground) [Member] Document and Entity Information [Abstract] Entity Registrant Name Entity Central Index Key Document Type Document Period End Date Amendment Flag Current Fiscal Year End Date Entity Well-Known Seasoned Issuer Entity Voluntary Filers Entity Current Reporting Status Entity Filer Category Entity Small Business Flag Entity Emerging Growth Company Entity Ex Transition Period Entity Shell Company Entity Public Float Entity Common Stock, Shares Outstanding Trading Symbol Document Fiscal Period Focus Document Fiscal Year Focus Statement of Financial Position [Abstract] ASSETS Real Estate Investments: Land Buildings and Improvements Total Real Estate Investments Accumulated Depreciation Real Estate Investments Real Estate Held for Sale Cash and Cash Equivalents Securities Available for Sale at Fair Value Tenant and Other Receivables Deferred Rent Receivable Prepaid Expenses Intangible Assets, net of Accumulated Amortization of $13,699,519 and $13,404,318, respectively Capitalized Lease Costs, net of Accumulated Amortization of $3,271,481 and $3,393,187, respectively Financing Costs, net of Accumulated Amortization of $995,135 and $619,555, respectively Other Assets TOTAL ASSETS LIABILITIES AND SHAREHOLDERS’ EQUITY Liabilities: Fixed Rate Mortgage Notes Payable, net of Unamortized Debt Issuance Costs Loans Payable Accounts Payable and Accrued Expenses Other Liabilities Total Liabilities COMMITMENTS AND CONTINGENCIES Shareholders’ Equity: 6.125% Series C Cumulative Redeemable Preferred Stock, $0.01 Par Value Per Share: 16,400,000 and 12,400,000 Shares Authorized as of September 30, 2018 and 2017, respectively; 11,488,001 and 9,839,445 Shares Issued and Outstanding as of September 30, 2018 and 2017, respectively Common Stock, $0.01 Par Value Per Share: 188,039,750 and 192,039,750 Shares Authorized as of September 30, 2018 and 2017, respectively; 81,503,134 and 75,630,521 Shares Issued and Outstanding as of September 30, 2018 and 2017, respectively Excess Stock, $0.01 Par Value Per Share: 200,000,000 Shares Authorized as of September 30, 2018 and 2017; No Shares Issued or Outstanding as of September 30, 2018 and 2017 Additional Paid-In Capital Accumulated Other Comprehensive Income (Loss) Undistributed Income Total Shareholders’ Equity TOTAL LIABILITIES & SHAREHOLDERS’ EQUITY Statement [Table] Statement [Line Items] Class of Stock [Axis] Accumulated amortization of intangible assets Accumulated amortization of lease costs Accumulated amortization of financing costs Cumulative redeemable preferred, stock dividend rate Preferred stock, par value Preferred stock, shares authorized Preferred stock, shares issued Preferred stock, shares outstanding Common stock, par value Common Stock, shares authorized Common Stock, shares issued Common Stock, shares outstanding Excess Stock, par value Excess Stock , shares authorized Excess Stock , shares issued Excess Stock , shares outstanding Income Statement [Abstract] INCOME: Rental Revenue Reimbursement Revenue Lease Termination Income TOTAL INCOME EXPENSES: Real Estate Taxes Operating Expenses General and Administrative Expenses Acquisition Costs Depreciation Amortization of Capitalized Lease Costs and Intangible Assets TOTAL EXPENSES OTHER INCOME (EXPENSE): Dividend and Interest Income Gain on Sale of Securities Transactions Interest Expense, including Amortization of Financing Costs TOTAL OTHER INCOME (EXPENSE) INCOME FROM CONTINUING OPERATIONS Gain on Sale of Real Estate Investments NET INCOME Less: Preferred Dividends Less: Redemption of Preferred Stock NET INCOME ATTRIBUTABLE TO COMMON SHAREHOLDERS BASIC INCOME – PER SHARE Net Income Less: Preferred Dividends Less: Redemption of Preferred Stock Net Income Attributable to Common Shareholders – Basic DILUTED INCOME – PER SHARE Net Income Less: Preferred Dividends Less: Redemption of Preferred Stock Net Income Attributable to Common Shareholders – Diluted WEIGHTED AVERAGE COMMON SHARES OUTSTANDING Basic Diluted Statement of Comprehensive Income [Abstract] Net Income Other Comprehensive Income: Unrealized Holding Gains (Losses) Arising During the Period Reclassification Adjustment for Net Gains Realized in Income Total Comprehensive Income Comprehensive Income Attributable to Common Shareholders Balance Beginning Shares Issued in Connection with the DRIP Shares Issued in Connection with Underwritten Public Offering of 6.125% Series C Preferred Stock, net of offering costs Shares Issued in Connection with At-The-Market Offerings of 6.125% Series C Preferred Stock, net of offering costs Preferred Stock Called for Redemption Shares Issued Through the Exercise of Stock Options Shares Issued Through Restricted Stock Awards Cancellation of Shares Related to Forfeiture of Restricted Stock Awards Stock Compensation Expense Distributions To Common Shareholders Preferred Dividends Change in Unrealized Net Holding Gain (Loss) on Securities Available for Sale, Net of Reclassification Adjustment Balance Ending Preferred, stock dividend rate Statement of Cash Flows [Abstract] CASH FLOWS FROM OPERATING ACTIVITIES Noncash Items Included in Net Income: Depreciation & Amortization Stock Compensation Expense Deferred Straight Line Rent Gain on Sale of Securities Transactions (Gain) Loss on Sale of Real Estate Investments Changes in: Tenant & Other Receivables Prepaid Expenses Other Assets & Capitalized Lease Costs Accounts Payable, Accrued Expenses & Other Liabilities NET CASH PROVIDED BY OPERATING ACTIVITIES CASH FLOWS FROM INVESTING ACTIVITIES Purchase of Real Estate & Intangible Assets Capital Improvements Proceeds from Sale of Real Estate Investments Return of Deposits on Real Estate Deposits Paid on Acquisitions of Real Estate Proceeds from Sale of Securities Available for Sale Purchase of Securities Available for Sale NET CASH USED IN INVESTING ACTIVITIES CASH FLOWS FROM FINANCING ACTIVITIES Proceeds from Fixed Rate Mortgage Notes Payable Principal Payments on Fixed Rate Mortgage Notes Payable Net Draws (Repayments) from Loans Payable Financing Costs Paid on Debt Redemption of 7.625% Series A Preferred Stock Redemption of 7.875% Series B Preferred Stock Proceeds from Underwritten Public Offering of 6.125% Series C Preferred Stock, net of offering costs Proceeds from At-The-Market Preferred Equity Program, net of offering costs Proceeds from Issuance of Common Stock in the DRIP, net of Dividend Reinvestments Proceeds from the Exercise of Stock Options Preferred Dividends Paid Common Dividends Paid, net of Reinvestments NET CASH PROVIDED BY FINANCING ACTIVITIES Net Increase (Decrease) in Cash and Cash Equivalents Cash and Cash Equivalents at Beginning of Year CASH AND CASH EQUIVALENTS AT END OF YEAR Preferred stock dividend rate Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization and Summary of Significant Accounting Policies Real Estate [Abstract] Real Estate Investments Business Combinations [Abstract] Acquisitions, Expansions and Dispositions Goodwill and Intangible Assets Disclosure [Abstract] Intangible Assets Risks and Uncertainties [Abstract] Significant Concentrations of Credit Risk Investments, Debt and Equity Securities [Abstract] Securities Available for Sale Debt Disclosure [Abstract] Mortgage Notes and Loans Payable Other Liabilities Disclosure [Abstract] Other Liabilities Disclosure of Compensation Related Costs, Share-based Payments [Abstract] Stock Compensation Plan Leases [Abstract] Income from Leases Related Party Transactions [Abstract] Related Party Transactions Income Tax Disclosure [Abstract] Taxes Equity [Abstract] Shareholders' Equity Fair Value Disclosures [Abstract] Fair Value Measurements Supplemental Cash Flow Elements [Abstract] Cash Flow Commitments and Contingencies Disclosure [Abstract] Contingencies, Commitments and Legal Matters Subsequent Events [Abstract] Subsequent Events Quarterly Financial Information Disclosure [Abstract] Selected Quarterly Financial Data (Unaudited) Real Estate And Accumulated Depreciation Real Estate and Accumulated Depreciation Description of the Business Use of Estimates Segment Reporting & Financial Information Principles of Consolidation and Non-controlling Interest Buildings and Improvements Gains (Losses) on Sale of Real Estate Acquisitions Marketable Securities Cash and Cash Equivalents Intangible Assets, Capitalized Lease Costs and Financing Costs Revenue Recognition Lease Termination Income Net Income Per Share Stock Compensation Plan Income Tax Comprehensive Income Reclassifications Recent Accounting Pronouncements Schedule of Real Estate Investments Summary of Purchase Price Allocation for Assets Acquisitions Summary of Operations Results for Properties Acquisition Schedule of Disposition and Real Estate Classified as Held for Sale Schedule of Pro Forma Information Schedule of Intangible Assets Under Leases in-place Acquisition Schedule of Concentration of Risk Schedule of Temporary Impaired Securities Summary of Range of Losses Schedule of Gain (Loss) on Securities Transactions, Net Summary of Investments in Debt and Equity Securities Summary of Fixed Rate Mortgage Notes Payable Summary of Mortgage Notes Payable Schedule of Maturities of Long-term Debt Schedule of Other Liabilities Schedule of Stock Options, Valuation Assumptions Summary of Status of Company's Stock Option Plan Summary of Stock Options Outstanding Summary of Nonvested Restricted Stock Awards Schedule of Future Minimum Rental Payments for Operating Leases Schedule of Net Income and Taxable Income Schedule of Cash Dividends Paid and Dividends Paid Deduction Dividends Payable [Table] Dividends Payable [Line Items] Schedule of Shares Issued in Connection with Dividend Reinvestment and Stock Purchase Plan Summary of Cash Distributions to Common Shareholders Schedule of Dividend Declared and Paid on Preferred Stock Summary of Fair Value of Financial Assets Schedule of Selected Quarterly Financial Data Number of real estate properties owned Weighted average lease maturity Average base rent per square foot Weighted average building age, term REIT investment securities, description Estimated useful life of buildings Estimated useful life of improvements Unrealized net holding losses reclassed Weighted-average amortization period upon acquisition for intangible assets Amortization expense related to deferred leasing and financing costs Amortization expense for existing assets in year 2019 Amortization expense for existing assets in year 2020 Amortization expense for existing assets in year 2021 Amortization expense for existing assets in year 2022 Amortization expense for existing assets in year 2023 Lease termination income description Total square foot of property Potential lease termination income Common stock equivalents included in the diluted weighted average shares outstanding Number of antidilutive options to purchase shares Amortization of compensation costs included in general and administrative expenses Deduction for aggregate amount of qualified REIT dividends Property Type Building & Improvements Accumulated Depreciation Net Book Value Purchase of industrial building Area of land Percentage of real estate property leased Lease term Lease expiration date Purchase price of industrial building Mortgage loan amortization period Face amount of mortgage loan Mortgage loans on real estate, interest rate Annual rental income over the remaining term of lease Total Cash Consideration Mortgage loan amortization period Cost of parking lot expansion Cost of expansion Lease expiration date description Increase in annual rent Rent prior to expansion Rent prior to expansion, per square foot Rent increase to after expansion Rent increase to after expansion, per square foot Value of property sold Proceeds from sale of real estate Termination fee Weighted average remaining rent due percentage Gain on real estate properties Percentage of gain on properties Net gain on historic cost Percentage of net gain over the historic cost basis Intangible asset related to the lease in-place Expansion of industrial building Preferred stock, dividend rate Purchase price allocation of properties acquired Rental Revenues Net Income Attributable to Common Shareholders Rental and Reimbursement Revenue Lease Termination Income Real Estate Taxes Operating Expenses Depreciation & Amortization Interest Expense Income from Operations Gain (Loss) on Sale of Real Estate Investment Net Income Rental Revenues Net Income Attributable to Common Shareholders Basic Net Income per Share Attributable to Common Shareholders Diluted Net Income per Share Attributable to Common Shareholders Amortization of intangible assets Amortization expense for existing intangible assets in year 2019 Amortization expense for existing intangible assets in year 2020 Amortization expense for existing intangible assets in year 2021 Amortization expense for existing intangible assets in year 2022 Amortization expense for existing intangible assets in year 2023 Rental revenue related to intangible assets Schedule of Real Estate Properties [Table] Real Estate Properties [Line Items] Total Intangible Assets, net Concentration Risk [Table] Concentration Risk [Line Items] Total property (in square feet) Concentration risk based on square feet, percentage Leases percentage of total property Rental and reimbursement revenue Rental and reimbursement revenue, percentage Description of total rentable space leased Securities available for sale at fair value Percentage of marketable securities to undepreciated assets Concentration risk based on square feet percentage, description Security available for sale, maximum percentage of investment on undepreciated assets Marketable REIT securities investments Percentage of undepreciated assets Net unrealized losses on securities portfolio Margin loan payable Dividend income on securities available for sale Proceeds from sales or redemptions of securities available for sale Less than 12 Months, Fair Value Less than 12 Months, Unrealized Losses 12 Months or Longer, Fair Value 12 Months or Longer, Unrealized Losses Number of Individual Securities Fair Value Unrealized Losses Range of Loss Gross realized gains Gross realized losses Gains on Sales of Securities Transactions, net Equity securities available for sale, Interest Rate/Dividend Rate Equity securities available for sale, Number of Shares Equity securities available for sale, Cost Equity Securities available for sale, Estimated Market Value Modified Pass-Through Mortgage-Backed Securities, Interest Rate/Dividend Modified Pass-Through Mortgage-Backed Securities, Number of Shares Modified Pass-Through Mortgage-Backed Securities, Cost Modified Pass-Through Mortgage-Backed Securities, Estimated Market Value Total Securities Available for Sale, Cost Total Securities Available for Sale, Estimated Market Value Mortgage loans on real estate, weighted average interest rate Weighted average loan maturity of mortgage notes payable Amortizing mortgage loan period Mortgage loans on real estate, new acquisitions Mortgages paid off Mortgage loan Aggregate purchase price of industrial properties Interest rate Repayment of mortgage loan Amount available on old line of credit Additional amount available on the accordion feature on old line of credit facility Total amount available including the accordion on the line of credit facility Line of credit facility, description Line of credit Percentage of capitalization rate Unsecured revolving line of credit, interest rate description Unsecured revolving line of credit, BMO interest rate description Unsecured revolving line of credit, interest rate description on current leverage ratio Line of Credit, interest rate Amount paid down on facility Line of credit outstanding amount Percentage of amount available to borrow on margin Percentage of amount available to borrow on margin, interest rate Loans payable Amortization of financing costs included in interest expense Fixed Rate Mortgage Notes Payable, Amount Weighted Average Interest Rate Debt Issuance Costs Accumulated Amortization of Debt Issuance Costs Unamortized Debt Issuance Costs Long-term Debt, Type [Axis] Fixed Rate Maturity date Mortgage Notes Payable 2019 2020 2021 2022 2023 Thereafter Total Rent paid in advance Unearned reimbursement revenue Tenant security deposits Other Total Extend the term of plan Common stock shares reserved for future issuance Stock based awards description Maximum share based compensation award granted in value Percentage of common shares available under plan without minimum vesting period Stock option plan term Exercise price per common share percentage Number of granted shares Number of options granted shares Fair value of option granted shares Vesting period of stock option Compensation expense Remaining unamortized stock option expenses Aggregate intrinsic value of options outstanding Intrinsic value of options exercised Options, Weighted average remaining contractual term Weighted average fair value granted Number of shares of restricted stock issued during the year Number of participants Grant date fair value of option granted Unrecognized restricted stock compensation related to outstanding non-vested restricted stock grants awarded Unrecognized restricted stock compensation remaining weighted average period Restricted Stock Compensation expense Shares available for grant as stock options Fair value assumption, measurement input, percentages Fair value assumption, measurement input, term Estimated forfeitures Number of shares, Outstanding at beginning of year Number of shares, Granted Number of shares, Exercised Number of shares, Expired/Forfeited Number of shares, Outstanding at end of year Weighted Average Exercise Price, Outstanding at beginning of year Weighted Average Exercise Price, Granted Weighted Average Exercise Price, Exercised Weighted Average Exercise Price, Expired/Forfeited Weighted Average Exercise Price, Outstanding at end of year Exercisable at end of year Weighted-average fair value of options granted during the year Date of Grant Number of Grants Number of Shares Outstanding Option Price Expiration Date Non-vested, Shares, Beginning balance Shares, Granted Shares, Dividend reinvested shares Shares, Vested Shares, Forfeited Non-vested, Shares, Ending balance Non-vested, Weighted average grant date fair value, Beginning balance Weighted average grant date fair value, Granted Weighted average grant date fair value, Dividend reinvested shares Weighted average grant date fair value, Vested Weighted average grant date fair value, Forfeited Non-vested, Weighted average grant date fair value, Ending balance Weighted average lease maturity term Annualized average base rent per square foot 2019 2020 2021 2022 2023 thereafter Total UMH common stock shares purchased during the period UMH common stock value purchased during the period Weighted average price per share UMH purchase of the company's common stock shares purchased during the period UMH purchase of the company's common stock value purchased during the period Square feet of corporate office Corporate office rent expense Corporate office rent per square foot Ownership percentage by company Director's fees - Daniel D. Cronheim Dividend requirement for estimated taxable income Net income attributable to common shareholders Book / tax difference on gains realized from capital transactions Stock compensation expense Deferred compensation Other book / tax differences, net Taxable income before adjustments Add: capital gains Estimated taxable income subject to 90% dividend requirement Cash dividends paid Less: Portion designated capital gains distribution Less: Return of capital Estimated dividends paid deduction Schedule of Subsidiary or Equity Method Investee [Table] Subsidiary or Equity Method Investee [Line Items] Percentage of discount price from market price through drip program Percentage increase in common stock dividend Dividend declared per share Annualized dividend rate per share price Dividend increase percentage Period of maintained or increased common stock cash dividend Dividends payable, date to be paid Record date Number of preferred shares sold Number of common shares sold Amount remaining that may be sold under the Preferred Stock ATM Program Weighted average price per share Number of common shares purchased Proceeds from common stock offering Preferred stock redemption price Preferred stock accrued dividend per share Redemption of Preferred Stock Dividend rate on preferred stock series B preferred stock Value of Series B Cumulative Redeemable Preferred Stock Net accrued dividend paid at redemption Dividend per preferred stock Total amount paid out at Redemption Date Preferred shares redemption charges Offering price per share Proceeds from offering used to pay down line of credit Net proceeds from public offering used to redeem series A preferred stock Gross proceeds from offering Net proceeds from offering Liquidation price per share Amount available to sell under the Preferred Stock ATM Program, value Annual rate of dividends cumulative and payable Description of redemption of preferred stock outstanding Description of redemption of preferred stock outstanding upon the occurrence of change of control Maximum dollar value that may be purchased under the share repurchase program Amounts received Less: Dividend reinvestments Amounts received, net Number of Shares Issued Cash distributions paid to common shareholders, Amount Cash distributions paid to common shareholders, Per Share Declaration Date Record Date Payment date Dividend Dividend per Share Fixed rate mortgage notes payable at fair value Fixed rate mortgage notes payable Fair Value Measurements, Recurring and Nonrecurring [Table] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value Hierarchy and NAV [Axis] Cash paid for interest Amount of dividend reinvested Contingencies and Commitments [Table] Contingencies and Commitments [Line Items] Square feet of building Weighted average lease maturity term Aggregate purchase price of industrial property Mortgage loans amortization period Mortgage loans committed on real estate, carrying amount of mortgage Weighted average fixed interest rate, percentage Expansions Expansion costs Increase in rent from expansion Rent increased to after expansion Rent increased to expansion per square foot Increase in annual rent rate Subsequent Event [Table] Subsequent Event [Line Items] Sale of stock price per share Number of Underwriters option to purchase additional shares Current total leasable square feet Purchase price of industrial building Mortgage loans on real estate, term of loan Face amount of mortgage loan Mortgage loans on real estate, interest rate Annual rental income over the remaining term of lease Rental and Reimbursement Revenue Total Expenses Other Income (Expense) Income from Continuing Operations Income from Continuing Operations per diluted share Gain on Sale of Real Estate Investment Net Income per diluted share Net Income Attributable to Common Shareholders Net Income Attributable to Common Shareholders per diluted share SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, by Property [Table] SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items] Property, plant and equipment, useful life Property, plant and equipment, estimated useful lives Encumbrances Land Buildings and Improvements Capitalization Subsequent to Acquisition Land Building & Improvements Total Accumulated Depreciation Date of Construction Date Acquired SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation Disclosure [Abstract] Balance-Beginning of Year Acquisitions Improvements Total Additions Sales Total Deletions Balance-End of Year Balance-Beginning of Year Depreciation Sales Balance-End of Year Total Additions Total Disposals Amazon.com Services, Inc [Member] B. Braun Medical Inc [Member] New Buildings [Member] Colorado Springs, CO [Member] Dividend rate in percentage of preferred stock. Face amount or stated value of Excess Stock per share; generally not indicative of the fair market value per share. Aggregate par or stated value of issued nonredeemable Excess Stock (or Excess Stock redeemable solely at the option of the issuer). This item includes treasury stock repurchased by the entity. Note: elements for number of nonredeemable common shares, par value and other disclosure concepts are in another section within stockholders' equity. Fedex And Fedex Subsidiaries [Member] Fedex Corporation [Member] Fedex Ground Package System Inc. [Member] Fedex Ground Package System Inc [Member] Four Properties [Member] The net gain (loss) resulting from sales and other disposals of real estate owned for investment purposes. In-Place Leases [Member] Increase (Decrease) other assets and capitalized lease costs. Kansas City, MO and Orangeburg, NY [Member] Kansas City, MO [Member] Represents a settlement with former tenants for the early termination of a lease. Orangeburg NY [Member] Aggregate dividends paid during the period for each share of preferred stock diluted outstanding. Proceeds from market preferred equity program. Real Estate Held for Sale [Member] Redemption of Series A Preferred Stock. Rental And Reimbursement Revenue [Member] Ridgeland [Member] Roanoke [Member] Rockford, IL (Sherwin-Williams Co.) [Member] Series A Cumulative Redeemable Preferred Stock [Member] Series B Cumulative Redeemable Preferred Stock [Member] Series C Cumulative Redeemable Preferred Stock [Member] Shaw Industries, Inc [Member] Summary of Range of Losses [Table Text Block] Fiscal Year 2018 [Member] Urbandale (Des Moines), IA [Member] White Bear Lake MN [Member] Redemption of 7.875% Series B Preferred Stock. Reimbursement Revenue. Total income. UMH Properties Inc [Member] Securities 1 [Member] Securities 2 [Member] Securities Three [Member] Securities Four [Member] Two Mortgages Loans [Member] Two Mortgages Loans [Member] One Mortgages Loans [Member] Five Mortgages Loans [Member] Dividend Reinvestment and Stock Purchase Plan [Member] Board of Directors [Member] July 2, 2018 [Member] Preferred Stock ATM Program [Member] Mortgage Notes Payable Fair Value [Member] Property Purchase Agreement [Member] Two Property [Member] Property One [Member] Property Two [Member] Preferred Stock ATM Program [Member] Ft. Myers, FL [Member] Four Real Estate Propeties [Member] Summary of Operations Results for Properties Acquisition [Table Text Block] Schedule of Disposition and Real Estate Classified as Held for Sale [Table Text Block] Hamburg, NY [Member] Walker, MI (Grand Rapids) [Member] Mesquite, TX [Member] Aiken, SC [Member] Homestead, FL [Member] Oklahoma City, OK [Member] Concord, NC [Member] Kenton, OH [Member] Stow, OH [Member] Edinburg, TX [Member] White Bear Lake. Orangeburg NY Kellogg [Member]. Ft. Myers, FL (FDX Ground) [Member] Ft. Myers, FL [Member] Kansas City, MO (Kellogg) [Member] Orangeburg NY [Member] Monroe, NC [Member] White Bear Lake (Minneapolis/St. Paul), MN [Member] Louisville, KY [Member] Tampa, FL [Member]. Huntsville, AL [Member]. Monroe, NC [Member] Acquired in-pace Leases [Member] Fiscal Year 2019 [Member] Fiscal Year 2020 [Member] Fiscal Year 2021 [Member] Fiscal Year 2022 [Member] Richfield, OH (Cleveland) [Member] Griffin, GA (Atlanta) [Member] Orion, MI [Member] Topeka, KS [Member] Carrollton, TX (Dallas) [Member] Ft. Mill, SC (Charlotte, NC) [Member] Lebanon, TN (Nashville) [Member] Rockford, IL [Member] Corpus Christi, TX [Member] Halfmoon, NY (Albany) [Member] Lebanon, OH (Cincinnati) [Member] Olive Branch, MS (Memphis, TN)(Anda Pharmaceuticals, Inc.) [Member] Livonia, MI (Detroit) [Member] Stewartville, MN (Rochester) [Member] Buckner, KY (Louisville) [Member] Edwardsville, KS (Kansas City) (International Paper) [Member] Lindale, TX (Tyler) [Member] Sauget, IL (St. Louis, MO) [Member] Monroe, OH (Cincinnati) [Member] Cincinnati, OH [Member] Imperial, PA (Pittsburgh) [Member] Burlington, WA (Seattle/Everett) [Member] Colorado Springs, CO [Member] Walker, MI (Grand Rapids) [Member] Aiken, SC (Augusta, GA) [Member] Mesquite, TX (Dallas) [Member] Homestead, FL (Miami) [Member] Oklahoma City, OK (Bunzl Distribution Oklahoma, Inc.) [Member] Concord, NC (Charlotte) [Member] FDX. FDX and Subsidiaries. FDX And Subsidiaries And Milwaukee Electric Tool Corporation [Member] Lease Concentration Risk [Member] Milwaukee Electric Tool Corporation [Member] ULTA, Inc. Mortgage Notes and Loans Payable [Text Block] Mortgage Notes Payable. Mortgage Loan Subsequently Fiscal Yearend [Member] Mortgage Notes Payable Under Commitment [Member] Mortgage Notes Payable [Member] BMO Capital Markets [Member] Two River Community Bank [Member] October 28, 2016 [Member] Margin Loans [Member] Jacksonville, FL (FDX) [Member] Jacksonville, FL (FDX) [Member] El Paso, TX [Member] Bedford Heights, OH (Cleveland) [Member] Chattanooga, TN [Member] Elgin, IL (Chicago) [Member] Hanahan, SC (Charleston) (SAIC) [Member] Roanoke, VA [Member] Edwardsville, KS (Kansas City)(Carlisle Tire) [Member] Kansas City, MO (Kellogg) [Member] Cheektowaga, NY (Buffalo) [Member] Punta Gorda, FL [Member] Cocoa, FL [Member] Richfield, OH (Cleveland) [Member] Tampa, FL (FDX) [Member] West Chester Twp., OH (Cincinnati) [Member] Orlando, FL [Member] Tampa, FL (FDX Ground) [Member] Denver, CO [Member] Hanahan, SC (Charleston) (FDX Ground) [Member] Augusta, GA (FDX Ground) [Member] Streetsboro, OH (Cleveland) [Member] Kansas City, MO (Bunzl) [Member] Olive Branch, MS (Memphis, TN) (Anda Distribution) [Member] Waco, TX [Member] Houston, TX [Member] Tolleson, AZ (Phoenix) [Member] Spring, TX (Houston) [Member] Memphis, TN [Member] Indianapolis, IN [Member] Frankfort, KY (Lexington) [Member] Altoona, PA [Member] Green Bay, WI [Member] Carlstadt, NJ (New York, NY) [Member] Roanoke, VA (FDX Ground) [Member] Olive Branch, MS (Memphis, TN) (Milwaukee Tool) [Member] Tulsa, OK [Member] Oklahoma City, OK (Bunzl) [Member] Jacksonville, FL (FDX Ground) [Member] Greenwood, IN (Indianapolis) [Member] Represents Ft. Worth, TX. Covington, LA (New Orleans) [Member] Davenport, FL (Orlando) [Member] Olathe, KS (Kansas City) [Member] Hamburg, NY (Buffalo) [Member] Concord, NC (Charlotte) One [Member] Amended and Restated 2007 Incentive Award Plan [Member] Non-Employee Directors [Member] Dividend Reinvestment and Stock Purchase Plan [Member] Vice President of Investor Relations [Member] Lease Agreement [Member] Lease Agreement Year 1 [Member] Lease Agreement Year 2 [Member] Lease Agreement Year 3 [Member] Lease Agreement Year 4 [Member] Lease Agreement Year 5 [Member] Lease Agreement Year 6 [Member] Lease Agreement Year 7 [Member] PalmerTerraceRealtyAssociatesLLC [Member] Marcus Assosiates [Member] Schedule of Net Income and Taxable Income [Table Text Block] Schedule of Cash Dividends Paid and Dividends Paid Deduction [Table Text Block] Tenant Improvements [Member] Monaca. Urbandale. Richland. O'Fallon member. Fayetteville, NC [Member] Schaumburg. Burr Ridge. Romulus. Liberty. Omaha [Member] Charlottesville [Member] Jacksonville. West Chester Twp. Richmond, VA [Member] St. Joseph [Member] Newington. Cudahy. Beltsville. Granite City. Winston-Salem [Member] Elgin. Tolleson. Edwardsville. Tampa (FDX) [Member] Denver [Member] Hanahan Norton. Hanahan (FDX). Augusta FDX Gr. Huntsville, AL [Member] Richfield. Colorado Springs, CO [Member] Griffin, GA (Atlanta) Orion, MI [Member] Carlstadt. Wheeling. Cheektowaga. Richmond (Carrier). Montgomery (Chicago), IL [Member] Tampa, FL (TB Grand Prix) [Member] Augusta (FDX) [Member] Lakeland, FL [Member] El Paso, Texas. Chattanooga [Member] Bedford Heights. Punta Gorda, FL [Member] Cocoa, FL [Member] Orlando, FL [Member] Topeka, KS [Member] Memphis [Member] Houston [Member] Carrollton (Dallas) [Member] Ft. Mill. Lebanon, Ohio. Rockford. Edinburg [Member] Streetsboro, Ohio. Corpus Christi [Member] Halfmoon. Lebanon (Cincinnati), OH [Member] Olive branch. Oklahoma City [Member] Waco [Member] Livonia Detroit MI. Olive Branch Milwaukee Tool. Green Bay [Member] Stewartville (Rochester), MN [Member] Tulsa [Member] Buckner Edwardsville (Kansas City), KS (Carlisle Tire) [Member] Altoona [Member] Spring (Houston) [Member] Indianapolis, IN (FDX Ground) [Member] Sauget, IL [Member] Lindale (Tyler), TX [Member] Kansas City, MO (Bunzl) [Member] Represents Frankfort, KY (Jim Beam). Represents Jacksonville, FL (FDX Gr). Monroe (Cincinnati), OH [Member] Greenwood (Indianapolis), IN [Member] Represents Rockford, IL (B/E Aerospace. Concord (Charlotte), NC [Member] Covington (New Orleans), LA [Member] Imperial (Pittsburgh), PA [Member] Burlington (Seattle/Everett), WA [Member] Davenport (Orlando), FL [Member] Olathe (Kansas City), KS [Member] Hamburg (Buffalo), NY [Member] Walker (Grand Rapids), MI [Member] Mesquite (Dallas), TX [Member] Aiken (Augusta, GA), SC [Member] Homestead (Miami), FL [Member] Concord (Charlotte), NC One [Member] Shopping Center [Member] Somerset [Member] Vacant Land [Member] Shelby County [Member] Industrial Buildings ,Shopping Center and Vacant Land [Member] Orangeburg (New York), NY [Member] Ft. Myers, FL (Vacant) [Member] Ridgeland (Jackson), MS [Member] Fayetteville [Member] Roanoke, VA (DHL) [Member] Richland (Jackson), MS [Member] Richmond (FDX). Industrial Building [Member] Wheeling (Chicago), IL [Member] Cheektowaga (Buffalo), NY [Member] Represents Richmond, VA (Carrier). Montgomery (Chicago), IL [Member] Augusta, GA (FDX) [Member] Lakeland, FL [Member] Bedford Heights (Cleveland), OH [Member] Carrollton (Dallas), TX [Member] Ft. Mill (Charlotte, NC), SC [Member] Lebanon (Nashville), TN [Member] Rockford, IL (Sherwin-Williams) [Member] Streetsboro (Cleveland), OH [Member] Halfmoon (Albany), NY [Member] Olive Branch, MS (Memphis, TN) (Anda) [Member] Buckner (Louisville), KY [Member] Edwardsville (Kansas City), KS (International Paper) [Member] Spring (Houston), TX [Member] Indianapolis, IN (FDX Ground) [Member] Sauget (St. Louis, MO), IL [Member] Frankfort (Lexington), KY [Member] Monroe (Cincinnati), OH [Member] Ft. Worth (Dallas), TX [Member] Rockford, IL (B/E Aerospace) [Member] Somerset, NJ [Member] Monaca (Pittsburgh), PA [Member] O’Fallon (St. Louis), MO [Member] Schaumburg (Chicago), IL [Member] Burr Ridge (Chicago), IL [Member] Romulus (Detroit), MI [Member] Liberty (Kansas City), MO [Member] Omaha, NE [Member] Charlottesville, VA [Member] West Chester Twp (Cincinnati), OH [Member] Mechanicsville (Richmond), VA (FDX) [Member] St. Joseph, MO [Member] Newington (Hartford), CT [Member] Cudahy (Milwaukee), WI [Member] Beltsville (Washington, DC), MD [Member] Granite City (St. Louis, MO), IL [Member] Represents Winston-Salem, NC. Elgin (Chicago), IL [Member] Tolleson (Phoenix), AZ [Member] Edwardsville (Kansas City), KS (Carlisle) [Member] Hanahan (Charleston), SC (SAIC) [Member] Hanahan (Charleston), SC (FDX Ground) [Member] Richfield (Cleveland), OH [Member] Griffin (Atlanta), GA [Member] Roanoke, VA (CHEP USA) [Member] Tampa, FL (Tampa Bay Grand Prix) [Member] Oklahoma City, OK (FDX Ground) [Member] Hamburg (Buffalo), NY [Member] Description Of Business [Policy Text Block] Intangible Assets, Lease Costs and Financing Costs. Underwritten Public Offering [Member] At-The-Market Offerings [Member] Tolleson (Phoenix) [Member] Colorado Springs [Member] Newington (Hartford) [Member] Davenport (Orlando) [Member] Ft. Myers (Vacant) [Member] Ft. Myers (FDX Ground) [Member] Homestead (Miami) [Member] Jacksonville (FDX) [Member] Jacksonville (FDX Ground) [Member] Tampa (FDX Ground) [Member] Tampa (Tampa Bay Grand Prix) [Member] Augusta (FDX Ground) [Member] Griffin (Atlanta) [Member] Burr Ridge (Chicago) [Member] Elgin (Chicago) [Member] Granite City (St. Louis, MO) [Member] Montgomery (Chicago) [Member] Rockford (Collins Aerospace Systems) [Member] Rockford (Sherwin-Williams Co.) [Member] Sauget (St. Louis, MO) [Member] Schaumburg (Chicago) [Member] Wheeling (Chicago) [Member] Greenwood (Indianapolis) [Member] Urbandale (Des Moines) [Member] Edwardsville (Kansas City)(Carlisle Tire) [Member] Edwardsville (Kansas City)(International Paper) [Member] Olathe (Kansas City) [Member] Buckner (Louisville) [Member] Frankfort (Lexington) [Member] Louisville [Member] Covington (New Orleans) [Member] Beltsville (Washington, DC) [Member] Walker (Grand Rapids) [Member] Livonia (Detroit) [Member] Romulus (Detroit) [Member] Stewartville (Rochester) [Member] Olive Branch (Memphis, TN) (Anda Pharmaceuticals, Inc.) [Member] Olive Branch (Memphis, TN)(Milwaukee Tool) [Member] Richland (Jackson) [Member] Ridgeland (Jackson) [Member] Kansas City (Kellogg) [Member] Liberty (Kansas City) [Member] O'Fallon (St. Louis) [Member] Carlstadt (New York, NY) [Member] Cheektowaga (Buffalo) [Member] Halfmoon (Albany) [Member] Hamburg (Buffalo) [Member] Orangeburg (New York) [Member] Concord (Charlotte) [Member] Concord (Charlotte) 1 [Member] Bedford Heights (Cleveland) [Member] Cincinnati [Member] Kenton [Member] Lebanon (Cincinnati) [Member] Monroe (Cincinnati) [Member] Richfield (Cleveland) [Member] Stow [Member] Streetsboro (Cleveland) [Member] West Chester Twp. (Cincinnati) [Member] Oklahoma City (FDX Ground)[Member] Oklahoma City (Bunzl) [Member] Imperial (Pittsburgh) [Member] Monaca (Pittsburgh) [Member] Aiken (Augusta, GA) [Member] Ft. Mill (Charlotte, NC) [Member] Hanahan (Charleston) (SAIC) [Member] Hanahan (Charleston) (FDX Ground) [Member] Lebanon (Nashville) [Member] El Paso [Member] Ft. Worth (Dallas) [Member] Lindale (Tyler) [Member] Mesquite (Dallas) [Member] Mechanicsville (Richmond) [Member] Richmond [Member] Roanoke (CHEP USA) [Member] Roanoke (FDX Ground) [Member] Burlington (Seattle/Everett) [Member] Cudahy (Milwaukee) [Member] White Bear Lake (Minneapolis/St. Paul) [Member] Tampa (FDX) [Member] Property type of real estate investment. Black-Scholes option-pricing model [Member] Average base rent per square foot. Weighted average building age, term. Amortization expense related to deferred leasing and financing costs. Amortization expense for existing assets in year 2018. Amortization expense for existing assets in year 2019. Amortization expense for existing assets in year 2020. Amortization expense for existing assets in year 2021. Amortization expense for existing assets in year 2022. Lease termination income description. Four Tenants With Lease [Member] REIT dividends percentage. Mobile [Member] Daytona Beach [Member] Braselton (Atlanta) [Member] Savannah [Member] Oklahoma City (Amazon) [Member] Charleston (FDX) [Member] Charleston (FDX Ground) [Member] Charleston, SC [Member] Savannah, GA [Member] Daytona Beach, FL [Member] Mobile, AL [Member] Orangeburg [Member] Expansion square feet. Percentage of real estate property leased. Lease term. Purchase price of industrial building. Mortgage loan amortization period. Annual rental income over the remaining term of lease. Mortgage loan on real estate expiration period. Cost of building expansion. Lease Expiration Date Description. Increase in annual rent. Rent prior to expansion. Rent increased to after expansion. Termination fee. Percentage of gain on properties. Net gain on historic cost undepreciated basis. Percentage of net gain over the historic cost basis. Expansion of industrial building. Business Acquisitions Purchase Price Allocation Of Properties Acquired. Rental Revenues. Net Rental Income. Lease Termination Income. The pro forma real estate taxes for a period as if the business combination or combinations had been completed at the beginning of the period. The pro forma operating expenses for a period as if the business combination or combinations had been completed at the begining of the period. The pro formo depreciation and amortization for a period as if the business combination or combinations had been completed at the begining of the period. The pro forma interest expense for a period as if the business combination or combinations had been completed at the begining of the period. The pro forma income loss from operations for a period as if the business combinations had been completed at the begining of the period. The pro forma gain on sale of real estate investment for a period as if the business combination or combinations had been completed at the begining of the period. The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. Olive Branch (Memphis, TN), MS (Anda Pharmaceuticals) [Member] Rockford, IL (Collins Aerospace Systems) [Member] Charleston, SC (FDX) [Member] Oklahoma City, OK (Amazon) [Member] Charleston, SC (FDX Ground) [Member] Braselton (Atlanta), GA [Member] Leases percentage of total Property. Rental and reimbursement revenue. Rental and reimbursement revenue percentage. Securities available for sale at fair value. Percentage of marketable securities to undepreciated assets. Concentration risk based on square feet percentage, description. Percentage of undepreciated assets investment marketable securities. Percentage of undepreciated assets. Dividend income on securities available for sale. Securities Five [Member] Number of individual securities. Available for sale securities range of loss in percentage. CBL & Associates Properties, Inc [Member] Cedar Realty Trust, Inc [Member] Dynex Capital, Inc [Member] iStar Financial, Inc [Member] Series I Preferred Stock [Member] Franklin Street Properties [Member] Government Properties Income Trust [Member] Industrial Logistics Property Trust [Member] Kimco Realty Corporation [Member] Pennsylvania Real Estate Investment Trust [Member] Select Income REIT [Member] Senior Housing Property Trust [Member] VEREIT, Inc. [Member] Washington Prime Group, Inc [Member] Government National Mortgage Association [Member] Investors Real Estate Trust [Member] Summit Hotel Properties, Inc [Member] Dividend percentage on equity security available for sale. Equity security available for sale, number of shares. Available-for-sale securities, equity securities, cost. Interest rate on debt securities available for sale. Available-for-sale Securities, debt securities, number of shares. Available-for-sale securities, debt securities, cost. Available-for-sale securities, cost. Seven Mortgages Loans One [Member] Seven Mortgages Loans Two [Member] Seven Mortgages Loans Three [Member] Seven Mortgages Loans Four [Member] Seven Mortgages Loans Five [Member] Seven Mortgages Loans Six [Member] Seven Mortgages Loans Seven [Member] Seven Mortgages Loans [Member] Jacksonville, FL [Member] Hanahan (Charleston), SC [Member] Edwardsville, KS [Member] Fully-Amortizing Mortgage Loan [Member December 31, 2018 [Member] October 9, 2018 [Member] Mortgage loans on real estate, weighted average interest rate. Represents period of weighted average loan maturity of the mortgage notes payable. Amortizing mortgage loan period. Mortgage loans on real estate, new acquisitions. Represent the Percentage Of capitalization rate to net operating income. Unsecured revolving line of credit, BMO interest rate description. Represents interest rate basis for effective rate on current leverage Ratio. Percentage of amount available to borrow on margin. Percentage of amount available to borrow on margin, interest rate. Ft. Worth, TX (Dallas) [Member] Olathe, KS (Kansas City) [Member] Braselton, GA (Atlanta) [Member] Unearned reimbursement revenue. Tenant security deposits. Unrestricted Stock [Member] Extend the term of plan for an additional ten years. Percentage of common shares available under plan without minimum vesting period. Exercise price per common share percentage under plan. Fair value of option granted shares. Remaining unamortized stock option expenses. Number of participants. Grant date fair value of option granted. Fair value assumption, measurement input, term. Estimated forfeitures of stock options. Stock Option [Member] Stock Option [Member] Stock Option [Member] Stock Option [Member] Stock Option [Member] Stock Option [Member] Stock Option [Member] Stock Option Eight [Member] Stock Option Nine [Member] Date the equity-based award grant, in CCYY-MM-DD format. Number of Stock Options Grants. Share based compensation arrangement by share based payment award option price. Non-vested, Shares, Dividend reinvested shares. Dividend reinvested shares weighted average grant date fair value. Weighted average lease maturity term. Annualized average base rent per square foot. UMH common stock shares purchased during the period. UMH common stock value purchased during the period. UMH purchase of the company's common stock shares purchased during the period. UMH purchase of the company's common stock value purchased during the period. Corporate office rent expense. Corporate office rent per square foot. Perecnt dividend requirement for estimated taxable income. Amount, after deduction of tax, noncontrolling interests, dividends on preferred stock and participating securities; of income (loss) available to common shareholders. Book tax difference on gains losses from capital transactions. Reconciles net income attributable to common shares to taxable income deferred compensation. Other book tax differences net. Taxable income before adjustments. Reconciles net income attributable to common shares to taxable income add (less) capital gains (losses). Reconciles net income attributable to common shares to Estimated taxable income subject to dividend requirement. Portion designated capital gains distribution. Rreconciles cash dividends paid Return of capital. Estimated dividends paid deduction. Shareholders [Member] October 1, 2018 [Member] October 2018 [Member] Underwriters [Member] Fiscal Year 2018 [Member] On and After September 15, 2021 [Member] Percentage increase in common stock dividend. Annualized dividend rate per share price. Dividend increase percentage. Represent the period of cash dividend maintained. Number of common shares purchased. Preferred stock accrued dividend per share. Dividend rate on Series B Preferred Stock. Net Accrued Dividend Paid at Redemption. Proceeds from offering used to pay down line of credit. Net proceeds from public offering used to Redeem Series A Preferred Stock. Gross proceeds. Net proceeds from offering. Description of redemption of preferred stock outstanding. Description of redemption of preferred stock outstanding upon the occurrence of Change of Control. Gross amount of cash inflow from capital contributions to an entity associated with a dividend reinvestment plan. Amount of dividend reinvested. December 31 [Member] March 31 [Member] September 30 [Member] June 30 [Member] Dividend Distribution One [Member] Dividend Distribution Two [Member] Dividend Distribution Three [Member] Dividend Distribution Four [Member] Contingencies and Commitments. Contingencies and Commitments. Monroe, OH [Membe] Weighted average lease maturity term. Business acquisition, purchase price allocation, property, plant and equipments. Fixed interest rate, percentage. Increase in rent from expansion. Rent increased to expansion per squre foot. Increase in annual rent rate. Trenton, NJ [Member] Fiscal 2019 [Member] Amount of acquisition cost of a business combination allocated to buildings included in real estate. Mortgage loans on real estate, term of loan. Face amount of mortgages. Mortgage loans on real estate, interest rate. Annual rental income. The total amount of revenue recognized for the period from operating leases, including minimum lease revenue, contingent revenue, percentage revenue, sublease revenue and tenant reimbursements. Mechanicsville (Richmond), VA [Member] Date the property was constructed. Period the property was acquired. Real Estate Gross Value. Reconciliation of carrying amount of real estate investments additions, net. Reconciliation of carrying amount of real estate investments deletion, net Schedule of shares issued in connection with dividend reinvestment and stock purchase plan. Disclosure of cash distributions to common shareholders. Real Estate And Accumulated Depreciation Abstract Stock Options [Member] FedEx Corporation (FDX) [Member] Kellogg Sales Company [Member] One Employee [Member] Eleven Employees [Member] The amount of acquisition cost of a business combination allocated to property, plant and equipment to be used in ongoing operations. Interest rate. Tampa, FL (FDX) [Member] Edwardsville (Kansas City), KS (Carlisle Tire) [Member] The carrying amount of the outstanding balance due under the mortgage loan. Fair value assumption, measurement input, percentages. Current total leasable square feet. Square feet of building. Number of granted shares. 2018 Repayment of Mortgage Loans [Member] Mortgages paid off. 2017 Repayment of Mortgage Loans [Member] Weighted average remaining rent due percentage. Cost of expansion. FDX Subsidiaries Rental And Reimbursement Revenue [Member] FDX Subsidiaries [Member] Rent prior to expansion, per square foot. Rent increase to after expansion, per square foot. Represents a settlement with former tenants for the early termination of a lease. October 1, 2018 [Member] Amount remaining that may be sold under the Preferred Stock ATM Program. Amount available to sell under the Preferred Stock ATM Program, value. Total amount paid out at Redemption Date. Braselton GA Fedex Ground [Member]. Ft Mill Sc Fedex Ground [Member]. Charleston Sc Fedex Ground [Member]. Mobile AL Amazon Com Services Inc [Member]. Oklahoma City OK Amazon Com Services Inc [Member]. Charleston Sc Fed Ex Corp [Member]. Savannah Ga Shaw Industries [Member]. Daytona Beach FL B Braun Medical Inc [Member]. Colorado Springs Co Fed Ex Ground [Member]. Ft Myers FL Fed Ex Ground [Member]. Edinburg TX Fed Ex Ground [Member]. Rental and Reimbursement Revenue. Business acquisitions pro forma net income. Hamburg, NY (FedEx Ground) [Member] Walker, MI (FedEx Ground) [Member] Mesquite, TX (FedEx Ground) [Member] Aiken, SC (Autoneum) [Member] Homestead, FL (FedEx Ground) [Member] Oklahoma City, OK (FedEx Ground) [Member] Concord, NC (FedEx Ground)[Member] Kenton, OH (International Paper) [Member] Stow, OH (Mickey Thompson) [Member] Indianapolis, IN (FedEx Ground) [Member] Fixed rate mortgage notes payable. Mortgage Notes Payable. Number of preferred shares sold. RockfordILMember Document and Entity Information [Abstract] [Default Label] RoanokeVAFDXGroundMember Augusta Fdx Gr [Member] Renatable Space [Member] Richmond Carrier [Member] Mortgage Loans On Real Estate Weighted Average Interest Rate TopekaMember MemphisMember Business Acquisitions Pro Forma Interest Expense Rockford [Member] EdinburgMember CorpusChristiMember WacoMember Olive Branch (Milwaukee Tool), MS [member] Mortgage Loans On Real Estate Amortization Period TulsaMember EdwardsvilleThreeMember Dividend Rate In Percentage Of Preferred Stock Jacksonville Fl Fdx Gr [Member] RidgelandJacksonMSMember FayettevilleMember RichlandJacksonMSMember WheelingChicagoILMember MontgomeryChicagoILMember LakelandFLMember ElPasoTXMember ChattanoogaTNMember Ridgeland [Member] Carlstadt [Member] FtMillCharlotteNCSCMember LebanonNashvilleTNMember RockfordILSherwinWilliamsMember StreetsboroClevelandOHMember HalfmoonAlbanyNYMember Mortgage Notes Payable [Table Text Block] SpringHoustonTXMember SaugetStLouisMOILMember FrankfortLexingtonKYMember MonroeCincinnatiOHMemberMember Mortgage Loans On Real Estate, Term Of Loan RockfordILBEAerospaceMember SomersetNJMember MonacaPittsburghPAMember SchaumburgChicagoILMember BurrRidgeChicagoILMember Reconciliation Of Carrying Amount Of Real Estate Investments Deletion Net LibertyKansasCityMOMember OmahaNEMember CharlottesvilleVAMember JacksonvilleFLFDXMember StJosephMOMember NewingtonHartfordCTMember CudahyMilwaukeeWIMember GraniteCityStLouisMOILMember Winston Salem, Nc [Member] ElginChicagoILMember TollesonPhoenixAZMember HanahanCharlestonSCSAICMember HanahanCharlestonSCFDXGroundMember RichfieldClevelandOHMember GriffinAtlantaGAMember RoanokeVACHEPUSAMember Fedex Ground Package System Inc. [Member] [Default Label] TampaFLTampaBayGrandPrixMember OklahomaCityOKFDXGroundMember HamburgBuffaloNYMember ColoradoSpringsMember ColoradoSpringsOneMember ConcordCharlotteOneMember RockfordILCollinsAerospaceSystemsMember BoardOfDirectorsMember PreferredStockATMProgramOneMember TampaFdxFDXMember EdwardsvilleKansasCityKSCarlisleTireMember OctoberFirstTwoThousandEighteenMember Real Estate Investment Property, at Cost Assets Liabilities Stockholders' Equity Attributable to Parent Liabilities and Equity RealEstateRevenuesNet Interest Expense, Other Long-term Debt Net Income (Loss) Attributable to Parent Net Income (Loss) Available to Common Stockholders, Basic Income (Loss) from Extraordinary Items, Net of Tax, Per Basic Share Income (Loss) from Operations before Extraordinary Items, Per Diluted Share Granite City [Member] Income (Loss) from Extraordinary Items, Net of Tax, Per Diluted Share Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Comprehensive Income (Loss), Net of Tax, Attributable to Parent Straight Line Rent GainsLossesOnSalesOfInvestmentRealEstate1 Increase (Decrease) in Receivables Increase (Decrease) in Prepaid Expense Net Cash Provided by (Used in) Operating Activities Payments to Acquire and Develop Real Estate Payments for Capital Improvements Payments for Deposits on Real Estate Acquisitions Payments to Acquire Available-for-sale Securities