Class Of Stock [Axis] Series C Preferred Stock [Member] Equity Components [Axis] Common Stock [Member] Additional Paid in Capital [Member] Undistributed Income (Loss) [Member] Accumulated Other Comprehensive Income (Loss) [Member] Sale of Stock [Axis] At-The-Market Offerings [Member] Option Indexed to Issuer's Equity, Type [Axis] Stock Option [Member] Real Estate, Type of Property [Axis] Industrial Buildings [Member] Real Estate Property Ownership [Axis] FedEx Ground Package System, Inc [Member] Monroe, OH [Member] Scenario [Axis] Subsequent to the Quarter End [Member] Kansas City, MO [Member] Orangeburg NY [Member] Kansas City, MO and Orangeburg [Member] Series C Cumulative Redeemable Preferred Stock [Member] Fedex And Fedex Subsidiaries [Member] FedEx Corporation [Member] Fedex Corporation Subsidiaries Member [Member] Concentration Risk Type [Axis] Rental And Reimbursement Revenue [Member] Property, Plant and Equipment, Type [Axis] Land [Member] Buildings [Member] In-Place Leases [Member] Real Estate Held for Sale [Member] Pro Forma [Member] Business Acquisition [Axis] UMH Properties, Inc [Member] Series B Cumulative Redeemable Preferred Stock [Member] Short-term Debt, Type [Axis] Mortgage Notes Payable [Member] Title of Individual [Axis] Underwriters [Member] Plan Name [Axis] Dividend Reinvestment and Stock Purchase Plan [Member] Board of Directors [Member] Related Party [Axis] Common Shareholders [Member ] January 16, 2019 [Member] Common Stock Repurchase Program [Member] On and After September 15, 2021 [Member] Series C Preferred Shareholders [Member] Preferred Stock ATM Program [Member] First Quarter Member [Member] Debt Instrument [Axis] Mortgage Notes Payable Fair Value [Member] Measurement Frequency [Axis] Fair Value Measurements [Member] Financial Instrument [Axis] Preferred Stock [Member] Fair Value, Hierarchy [Axis] Level 1 [Member] Level 2 [Member] Level 3 [Member] Mortgage Backed Securities [Member] Property Purchase Agreement [Member] Industrial Building [Member] Amazon.Com Services, Inc. [Member] Future Corporate Office Space [Member] 4th Quarter of Fiscal 2019 [Member] Subsequent Event Type [Axis] Subsequent Event [Member] Board of Directors [Member] Series C Preferred Shareholders [Member] Range [Axis] Minimum [Member] Maximum [Member] Two Mortgages Loans [Member] Line of Credit [Member] Excess Stock [Member] Common and Preferred Stock [Member] Document And Entity Information Entity Registrant Name Entity Central Index Key Document Type Document Period End Date Amendment Flag Current Fiscal Year End Date Entity Filer Category Entity Small Business Flag Entity Emerging Growth Company Entity Ex Transition Period 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 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 $14,199,559 and $13,699,519, respectively Capitalized Lease Costs, net of Accumulated Amortization of $3,409,446 and $3,271,481, respectively Financing Costs, net of Accumulated Amortization of $1,089,169 and $995,135, 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 Shares Authorized as of December 31, 2018 and September 30, 2018; 11,532,445 and 11,488,001 Shares Issued and Outstanding as of December 31, 2018 and September 30, 2018, respectively Common Stock, $0.01 Par Value Per Share: 188,039,750 Shares Authorized as of December 31, 2018 and September 30, 2018; 92,335,115 and 81,503,134 Shares Issued and Outstanding as of December 31, 2018 and September 30, 2018, respectively Excess Stock, $0.01 Par Value Per Share: 200,000,000 Shares Authorized as of December 31, 2018 and September 30, 2018; No Shares Issued or Outstanding as of December 31, 2018 and September 30, 2018 Additional Paid-In Capital Accumulated Other Comprehensive 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 capitalized 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 & Administrative Expenses Depreciation Amortization of Capitalized Lease Costs and Intangible Assets TOTAL EXPENSES OTHER INCOME (EXPENSE): Dividend and Interest Income Gain on Sale of Securities Transactions Unrealized Holding Losses Arising During the Period Interest Expense, including Amortization of Financing Costs TOTAL OTHER INCOME (EXPENSE) INCOME (LOSS) FROM CONTINUING OPERATIONS Gain on Sale of Real Estate Investments NET INCOME (LOSS) Less: Preferred Dividends NET INCOME (LOSS) ATTRIBUTABLE TO COMMON SHAREHOLDERS BASIC INCOME (LOSS) - PER SHARE Net Income (Loss) Less: Preferred Dividends Net Income (Loss) Attributable to Common Shareholders - Basic DILUTED INCOME (LOSS) - PER SHARE Net Income (Loss) Less: Preferred Dividends Net Income (Loss) Attributable to Common Shareholders - Diluted WEIGHTED AVERAGE COMMON SHARES OUTSTANDING Basic Diluted Statement of Comprehensive Income [Abstract] Net Income (Loss) Other Comprehensive Income (Loss): Unrealized Holding Losses Arising During the Period Reclassification Adjustment for Net Gains Realized in Income TOTAL COMPREHENSIVE INCOME (LOSS) COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO COMMON SHAREHOLDERS Balance Beginning Impact of Adoption of Accounting Standards Update 2016-01 Shares Issued in Connection with the DRIP Shares Issued in Connection with Underwritten Public Offering of Common 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 Shares Issued Through the Exercise of Stock Options Shares Issued Through Restricted Stock Awards Stock Compensation Expense Distributions To Common Shareholders ($0.17 per share) Preferred Dividends ($0.3828125 per share) Change in Unrealized Net Holding Gain (Loss) on Securities Available for Sale, Net of Reclassification Adjustment Balance Ending Preferred stock, dividend rate Distributions to common shareholders, per share Preferred dividends, per share Statement of Cash Flows [Abstract] CASH FLOWS FROM OPERATING ACTIVITIES Noncash Items Included in Net Income (Loss): Depreciation & Amortization Deferred Straight Line Rent Stock Compensation Expense Unrealized Holding Losses Arising During the Period Gain on Sale of Securities Transactions Gain 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 Net Repayments on Loans Payable Proceeds from Fixed Rate Mortgage Notes Payable Principal Payments on Fixed Rate Mortgage Notes Payable Financing Costs Paid on Debt Proceeds from the Exercise of Stock Options Proceeds from Underwritten Public Offering of Common 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 Preferred Dividends Paid Common Dividends Paid, net of Reinvestments NET CASH PROVIDED BY FINANCING ACTIVITIES NET INCREASE IN CASH AND CASH EQUIVALENTS CASH AND CASH EQUIVALENTS - BEGINNING OF PERIOD CASH AND CASH EQUIVALENTS - END OF PERIOD Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization and Accounting Policies Earnings Per Share [Abstract] Net Income Per Share Real Estate [Abstract] Real Estate Investments Investments, Debt and Equity Securities [Abstract] Securities Available for Sale at Fair Value Debt Disclosure [Abstract] Debt Equity [Abstract] Shareholders' Equity Fair Value Disclosures [Abstract] Fair Value Measurements Supplemental Cash Flow Elements [Abstract] Supplemental Cash Flow Information Commitments and Contingencies Disclosure [Abstract] Contingencies and Commitments Subsequent Events [Abstract] Subsequent Events Use of Estimates Reclassification Stock Compensation Plan Recent Accounting Pronouncements Segment Reporting & Financial Information Summary of Stock Options Outstanding Schedule of Stock Options, Valuation Assumptions Schedule of Properties Acquired During Period Accounted for Asset Acquisitions Summary of Consolidated Statements of Income for Properties Acquired Summary of Income from Properties Sold During the Prior Year Schedule of Pro Forma Information Summary of Fixed Rate Mortgage Notes Payable Summary of Fair Value of Financial Assets Number of real estate properties owned Total square foot of property Percentage of properties occupied Weighted average lease maturity Average base rent per square foot Weighted average building age, term REIT investment securities, description Total assets excluding accumulated depreciation Marketable REIT securities investments Percentage of undepreciated assets Percentage that may be deducted from qualified REIT dividends for tax purposes Amortization of compensation costs included in general and administrative expenses Stock options, granted Weighted average fair value of stock option Number restricted stock shares granted Number of stock option exercised Weighted average exercise price per share Total proceeds Stock option shares available for grant Option to purchase shares outstanding Aggregate intrinsic value of options Unrealized net holding losses reclassed Date of Grant Number of Employees Number of Shares Option Price Expiration Date Dividend yield Expected volatility Risk-free interest rate Expected lives (years) Estimated forfeitures Common stock equivalents included in the diluted weighted average shares outstanding Antidilutive options to purchase common stock shares Purchase of industrial building Area of property Percentage of building area leased Expansion of industrial building Lease term Lease term expiration period Purchase price of industrial building Mortgage loan amortization period Face amount of mortgages Mortgage loans on real estate, interest rate Annual rental income over the remaining term of lease Transaction costs Cost of building expansion Extended prior lease expiration date Increase in 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 Increase in annual rent per year Total square foot of portfolio Value of property sold Proceeds from sale of property Lease termination income Percentage of weighted average lease termination income Cumulative redeemable preferred, stock dividend rate Square feet of real estate property leased Percentage of real estate property leased Percentage of rental space and tenant account, description Percentage of aggregate rental and reimbursement revenue Marketable securities as a percentage of undepreciated assets Held marketable securities Purchase price allocation of properties acquired Rental Revenues Net Income Attributable to Common Shareholders Rental and Reimbursement Revenue Real Estate Taxes Operating Expenses Depreciation & Amortization Interest Expense, including Amortization of Financing Costs Income from Operations Gain on Sale of Real Estate Investments Net Income Rental Revenues Net Income Attributable to Common Shareholders Basic and Diluted Net Income per Share Attributable to Common Shareholders Schedule of Available-for-sale Securities [Table] Debt Securities, Available-for-sale [Line Items] Security available for sale, maximum percentage of investment on undepreciated assets Purchase of securities available for sale Dividend income on investment in securities UMH common shares purchased during the quarter Cost of securities purchased Dividend reinvestment and stock purchase plan cost, per share Shares owned by company Shares owned, cost Marketable REIT securities fair value Outstanding common shares, percentage Available for sale securities, shares Dividend rate of preferred stock held as security for loan Net unrealized losses on securities portfolio Unrealized holding losses arising during the period Interest expense amortization of financing costs Fixed rate mortgage notes payable, description Fixed rate mortgage notes payable Annual interest rate Weighted average interest rate percentage Notes payable maturity period Proceeds from fixed rate mortgage notes payable Total availability of unsecured credit facility Line of credit amount Drawn down margin loan Repayment of line of credit facility Debt maturity date Line of credit facility interest rate terms Line of credit facility related to accordion feature Total potential available under unsecured line of credit Maximum borrowing percentage of marketable securities Securities available for sale at fair value Margin loan bearing interest rate Fixed Rate Mortgage Notes Payable, Amount Weighted Average Interest Rate Debt Issuance Costs Accumulated Amortization of Debt Issuance Costs Unamortized Debt Issuance Costs Schedule of Subsidiary or Equity Method Investee [Table] Subsidiary or Equity Method Investee [Line Items] Common stock, shares authorized Common stock, shares issued Common stock, shares outstanding Excess stock, shares authorized Excess Stock, shares issued Excess Stock, shares outstanding Number of common shares sold Underwriters option to purchase additional shares Sale of stock price per share Net proceeds from issuance initial public offering Cash raised from issuance of common stock under DRIP Amount of dividend reinvested Common stock issued under plan Cash dividends paid Dividend declared per share Dividends participation rate Dividend declaration date Dividends payable, date to be paid Dividend payable date of record Increase in the value of common stock available under program Share Repurchase Program authorizes amount Liquidation price per share Accrued preferred dividends Accrued dividends Annual rate of dividends cumulative and payable Preferred stock redemption price Maximum amount of proceeds allowed from the issuance of preferred stock from the ATM program Number of preferred shares sold Proceeds from the issuance of preferred stock from the ATM Program Weighted average price per share of shares sold under the ATM Remaining amount to be sold under the ATM Program 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 Contingencies and Commitments [Table] Contingencies and Commitments [Line Items] Square feet of industrial buildings to be purchased Aggregate purchase price of industrial properties Percentage of total square feet of industrial buildings to be purchased Mortgage loans amortization period Mortgage loans committed on real estate, carrying amount of mortgage Weighted average fixed interest rate, percentage Square feet to be rented Initial annual rent Annual rent per square foot Subsequent Event [Table] Subsequent Event [Line Items] Expansions Expansion costs Increase in rent from expansion Rent increased to after expansion Rent increased to expansion per square foot 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. 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. Reimbursement Revenue. Represents a settlement with former tenants for the early termination of a lease. Total income. Unrealized holding losses arising during the period. Aggregate dividends paid during the period for each share of preferred stock diluted outstanding. Impact of adoption of accounting standards update 2016-01. At-The-Market Offerings [Member] The net gain (loss) resulting from sales and other disposals of real estate owned for investment purposes. Increase (Decrease) other assets and capitalized lease costs. Proceeds from market preferred equity program. Summary of Consolidated Statements of Income for Properties Acquired [Table Text Block] Weighted average building age, term. Percentage of undepreciated assets. REIT dividends percentage. Date the equity-based award grant, in CCYY-MM-DD format. Number of Employees. Share based compensation arrangement by share based payment award option price. Estimated forfeitures of stock options. Industrial Buildings [Member] Fedex Ground Package System Inc [Member] Monroe, OH [Membe] Subsequent to the Quarter End [Member] Kansas City, MO [Member] Orangeburg NY [Member] Kansas City, MO (Kellogg) and Orangeburg [Member] Series C Cumulative Redeemable Preferred Stock [Member] Fedex And Fedex Subsidiaries [Member] Fedex Corporation [Member] Fedex Corporation Subsidiaries Member [Member] Rental And Reimbursement Revenue [Member] Expansion square feet. Acres of property. Percentage of building area leased. Lease term. Amount of acquisition cost of a business combination allocated to buildings included in real estate. Mortgage loan on real estate expiration period. Cost of building expansion. Rent prior to expansion. Rent prior to expansion, per square foot. Rent increased to after expansion. Rent increased to after expansion, per square foot. Percentage of weighted average lease termination income. Square feet of real estate property leased. Percentage of real estate property leased. Percentage of rental space and tenant account description. Expected revenue as percentage of aggregate rental and reimbursement revenue in current fiscal year. In-Place Leases [Member] Business Acquisitions Purchase Price Allocation Of Properties Acquired. Rental Revenue. Net Income Attributable to Common Shareholders. Real Estate Held for Sale [Member] Business Acquisitions Pro Forma Rental And Reimbursement Revenue. 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. BusinessAcquisitionsProFormaNetLoss. Basic and Diluted Net Income per Share Attributable to Common Shareholders. UMH Properties Inc [Member] Series B Cumulative Redeemable Preferred Stock [Member] Common and Preferred Stock [Member] Percentage of undepreciated assets investment marketable securities. Common stock shares purchases. Dividend reinvestment and stock purchase plan cost, per share. Available for sale securities, Shares. Dividend rate of preferred stock held as security for loan. Mortgage Notes Payable [Member] Mortgage loans on real estate, weighted average interest rate. Underwriters [Member] Dividend Reinvestment and Stock Purchase Plan [Member] Common Shareholders [Member ] January 16, 2019 [Member] On and After September 15, 2021 [Member] Series C Preferred Shareholders [Member] Preferred Stock ATM Program [Member] Number of common shares purchased. Cash raised from issuance of common stock under DRIP. Amount of dividend reinvested. Dividends participation rate. Mortgage Notes Payable Fair Value [Member] Contingencies and Commitments. Contingencies and Commitments. Property Purchase Agreement [Member] Future Corporate Office Space [Member] 4th Quarter of Fiscal 2019 [Member] Percentage of square feet of industrial building. Business acquisition, purchase price allocation, property, plant and equipments. Mortgage loan amortization period. Fixed interest rate, percentage. Annual rent per square foot. Board of Directors [Member] Series C Preferred Shareholders [Member] Increase in rent from expansion. Rent increased to expansion per squre foot. Two Mortgages Loans [Member] Five Mortgages Loans [Member] Fixed rate mortgage notes payable, description. Maximum borrowing percentage of marketable securities. First Quarter Member [Member] 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. Common Stock Repurchase Program [Member] Amazon.Com Services, Inc. [Member] Excess Stock [Member] Expansion of industrial building. Square feet to be rented. Number of preferred shares sold. Extended prior lease expiration date. Total assets excluding accumulated depreciation. Increase in annual rent per year. Average base rent per square foot1. BoardOfDirectorsMember SeriesCPreferredShareholdersMember Real Estate Investment Property, at Cost Real Estate Investment Property, Accumulated Depreciation Real Estate Investment Property, Net Assets Liabilities Stockholders' Equity Attributable to Parent Liabilities and Equity RealEstateRevenuesNet Operating Expenses [Default Label] Interest Expense, Other Long-term Debt Nonoperating Income (Expense) Net Income (Loss) Attributable to Parent Net Income (Loss) Available to Common Stockholders, Basic Preferred Stock, Dividends, Per Share, Cash Paid Income (Loss) from Operations before Extraordinary Items, Per Diluted Share Granite City [Member] 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 Net Cash Provided by (Used in) Investing Activities Repayments of Notes Payable Payments for Mortgage Deposits Payments of Financing Costs Payments of Ordinary Dividends, Preferred Stock and Preference Stock Payments of Dividends Net Cash Provided by (Used in) Financing Activities Cash and Cash Equivalents, Period Increase (Decrease) Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block] Business Acquisitions Pro Forma Real Estate Taxes Business Acquisitions Pro Forma Operating Expenses Business Acquisitions Pro Forma Depreciation And Amortization Business Acquisitions Pro Forma Income Loss From Operations BusinessAcquisitionsProFormaGainOnSaleOfRealEstateInvestment BusinessAcquisitionsProFormaNetLoss Business Acquisition, Pro Forma Revenue Business Acquisition, Pro Forma Net Income (Loss) Accumulated Amortization, Debt Issuance Costs, Current