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Investment Property and Equipment (Details Textual) (USD $)
0 Months Ended 1 Months Ended 0 Months Ended
May 23, 2012
Jul. 28, 2014
acre
Home_Site
Home_Community
Mar. 13, 2014
Home_Site
acre
Home_Community
Jul. 14, 2014
Home_Site
acre
Home_Community
Nov. 06, 2013
acre
Home_Community
Home_Site
Mar. 01, 2013
acre
Home_Community
Home_Site
Apr. 02, 2013
acre
Home_Site
Oct. 01, 2013
acre
Home_Site
Dec. 31, 2014
Home_Site
Dec. 31, 2013
Investment Property and Equipment (Textual)                    
Number of manufactured home communities acquired     8umh_NumberOfManufacturedHomeCommunitiesAcquired 4umh_NumberOfManufacturedHomeCommunitiesAcquired 5umh_NumberOfManufacturedHomeCommunitiesAcquired 10umh_NumberOfManufacturedHomeCommunitiesAcquired        
Number of developed home sites company own and operates                 15,000umh_NumberOfDevelopedHomeSitesCompanyOwnAndOperates  
Mortgage loan     $ 18,100,000us-gaap_SecuredDebt $ 8,600,000us-gaap_SecuredDebt         $ 182,670,854us-gaap_SecuredDebt $ 160,639,944us-gaap_SecuredDebt
Royalty received from oil and gas, percentage 20.00%umh_RoyaltyReceivedFromOilAndGas                  
Proceeds from lease signing with Oil and Gas community 499,471us-gaap_ProceedsFromCollectionOfLeaseReceivables                  
Option to extend lease term 5 years                  
Lease term 5 years                  
Ohio Manufactured Home Communities [Member]                    
Investment Property and Equipment (Textual)                    
Number of manufactured home communities acquired   2umh_NumberOfManufacturedHomeCommunitiesAcquired
/ us-gaap_BusinessAcquisitionAxis
= umh_OhioManufacturedHomeCommunitiesMember
8umh_NumberOfManufacturedHomeCommunitiesAcquired
/ us-gaap_BusinessAcquisitionAxis
= umh_OhioManufacturedHomeCommunitiesMember
             
Area of acquired real estate property (in acres)   39umh_AreaOfAcquiredRealEstateProperty
/ us-gaap_BusinessAcquisitionAxis
= umh_OhioManufacturedHomeCommunitiesMember
270umh_AreaOfAcquiredRealEstateProperty
/ us-gaap_BusinessAcquisitionAxis
= umh_OhioManufacturedHomeCommunitiesMember
             
Purchase price of acquired entity   5,400,000umh_BusinessAcquisitionCostOfAcquiredEntityPurchasePriceOne
/ us-gaap_BusinessAcquisitionAxis
= umh_OhioManufacturedHomeCommunitiesMember
24,950,000umh_BusinessAcquisitionCostOfAcquiredEntityPurchasePriceOne
/ us-gaap_BusinessAcquisitionAxis
= umh_OhioManufacturedHomeCommunitiesMember
             
Percentage of average occupancy   91.00%umh_PercentageOfAverageOccupancy
/ us-gaap_BusinessAcquisitionAxis
= umh_OhioManufacturedHomeCommunitiesMember
70.00%umh_PercentageOfAverageOccupancy
/ us-gaap_BusinessAcquisitionAxis
= umh_OhioManufacturedHomeCommunitiesMember
             
Mortgage loan   5,000,000us-gaap_SecuredDebt
/ us-gaap_BusinessAcquisitionAxis
= umh_OhioManufacturedHomeCommunitiesMember
18,100,000us-gaap_SecuredDebt
/ us-gaap_BusinessAcquisitionAxis
= umh_OhioManufacturedHomeCommunitiesMember
             
Total communities sites   258umh_NumberOfPropertySites
/ us-gaap_BusinessAcquisitionAxis
= umh_OhioManufacturedHomeCommunitiesMember
1,018umh_NumberOfPropertySites
/ us-gaap_BusinessAcquisitionAxis
= umh_OhioManufacturedHomeCommunitiesMember
             
Pennsylvania Manufactured Home Communities [Member]                    
Investment Property and Equipment (Textual)                    
Number of manufactured home communities acquired       4umh_NumberOfManufacturedHomeCommunitiesAcquired
/ us-gaap_BusinessAcquisitionAxis
= umh_PennsylvaniaManufacturedHomeCommunitiesMember
           
Area of acquired real estate property (in acres)       239umh_AreaOfAcquiredRealEstateProperty
/ us-gaap_BusinessAcquisitionAxis
= umh_PennsylvaniaManufacturedHomeCommunitiesMember
           
Purchase price of acquired entity       12,200,000umh_BusinessAcquisitionCostOfAcquiredEntityPurchasePriceOne
/ us-gaap_BusinessAcquisitionAxis
= umh_PennsylvaniaManufacturedHomeCommunitiesMember
           
Percentage of average occupancy       84.00%umh_PercentageOfAverageOccupancy
/ us-gaap_BusinessAcquisitionAxis
= umh_PennsylvaniaManufacturedHomeCommunitiesMember
           
Mortgage loan       8,600,000us-gaap_SecuredDebt
/ us-gaap_BusinessAcquisitionAxis
= umh_PennsylvaniaManufacturedHomeCommunitiesMember
           
Total communities sites       336umh_NumberOfPropertySites
/ us-gaap_BusinessAcquisitionAxis
= umh_PennsylvaniaManufacturedHomeCommunitiesMember
           
Manufactured Home Community [Member]                    
Investment Property and Equipment (Textual)                    
Number of manufactured home communities acquired   2umh_NumberOfManufacturedHomeCommunitiesAcquired
/ us-gaap_BusinessAcquisitionAxis
= umh_ManufacturedHomeCommunityMember
    5umh_NumberOfManufacturedHomeCommunitiesAcquired
/ us-gaap_BusinessAcquisitionAxis
= umh_ManufacturedHomeCommunityMember
10umh_NumberOfManufacturedHomeCommunitiesAcquired
/ us-gaap_BusinessAcquisitionAxis
= umh_ManufacturedHomeCommunityMember
       
Number of developed home sites company own and operates         519umh_NumberOfDevelopedHomeSitesCompanyOwnAndOperates
/ us-gaap_BusinessAcquisitionAxis
= umh_ManufacturedHomeCommunityMember
1,854umh_NumberOfDevelopedHomeSitesCompanyOwnAndOperates
/ us-gaap_BusinessAcquisitionAxis
= umh_ManufacturedHomeCommunityMember
       
Area of acquired real estate property (in acres)         200umh_AreaOfAcquiredRealEstateProperty
/ us-gaap_BusinessAcquisitionAxis
= umh_ManufacturedHomeCommunityMember
400umh_AreaOfAcquiredRealEstateProperty
/ us-gaap_BusinessAcquisitionAxis
= umh_ManufacturedHomeCommunityMember
       
Purchase price of acquired entity         11,800,000umh_BusinessAcquisitionCostOfAcquiredEntityPurchasePriceOne
/ us-gaap_BusinessAcquisitionAxis
= umh_ManufacturedHomeCommunityMember
67,500,000umh_BusinessAcquisitionCostOfAcquiredEntityPurchasePriceOne
/ us-gaap_BusinessAcquisitionAxis
= umh_ManufacturedHomeCommunityMember
       
Percentage of average occupancy         82.00%umh_PercentageOfAverageOccupancy
/ us-gaap_BusinessAcquisitionAxis
= umh_ManufacturedHomeCommunityMember
85.00%umh_PercentageOfAverageOccupancy
/ us-gaap_BusinessAcquisitionAxis
= umh_ManufacturedHomeCommunityMember
       
Mortgage loan         7,700,000us-gaap_SecuredDebt
/ us-gaap_BusinessAcquisitionAxis
= umh_ManufacturedHomeCommunityMember
53,760,000us-gaap_SecuredDebt
/ us-gaap_BusinessAcquisitionAxis
= umh_ManufacturedHomeCommunityMember
       
Manufactured Home Community [Member] | Indiana [Member]                    
Investment Property and Equipment (Textual)                    
Number of manufactured home communities acquired           5umh_NumberOfManufacturedHomeCommunitiesAcquired
/ us-gaap_BusinessAcquisitionAxis
= umh_ManufacturedHomeCommunityMember
/ dei_EntityAddressesAddressTypeAxis
= stpr_IN
       
Manufactured Home Community [Member] | Pennsylvania [Member]                    
Investment Property and Equipment (Textual)                    
Number of manufactured home communities acquired           4umh_NumberOfManufacturedHomeCommunitiesAcquired
/ us-gaap_BusinessAcquisitionAxis
= umh_ManufacturedHomeCommunityMember
/ dei_EntityAddressesAddressTypeAxis
= stpr_PA
       
Manufactured Home Community [Member] | Michigan [Member]                    
Investment Property and Equipment (Textual)                    
Number of manufactured home communities acquired           1umh_NumberOfManufacturedHomeCommunitiesAcquired
/ us-gaap_BusinessAcquisitionAxis
= umh_ManufacturedHomeCommunityMember
/ dei_EntityAddressesAddressTypeAxis
= stpr_MI
       
Manufactured Home Community [Member] | Ohio [Member]                    
Investment Property and Equipment (Textual)                    
Number of manufactured home communities acquired         4umh_NumberOfManufacturedHomeCommunitiesAcquired
/ us-gaap_BusinessAcquisitionAxis
= umh_ManufacturedHomeCommunityMember
/ dei_EntityAddressesAddressTypeAxis
= umh_OhioMember
         
Manufactured Home Community [Member] | New York [Member]                    
Investment Property and Equipment (Textual)                    
Number of manufactured home communities acquired         1umh_NumberOfManufacturedHomeCommunitiesAcquired
/ us-gaap_BusinessAcquisitionAxis
= umh_ManufacturedHomeCommunityMember
/ dei_EntityAddressesAddressTypeAxis
= umh_NyMember
         
Holiday Mobile Village [Member]                    
Investment Property and Equipment (Textual)                    
Number of developed home sites company own and operates             274umh_NumberOfDevelopedHomeSitesCompanyOwnAndOperates
/ us-gaap_BusinessAcquisitionAxis
= umh_HolidayMobileVillageMember
     
Area of acquired real estate property (in acres)             68umh_AreaOfAcquiredRealEstateProperty
/ us-gaap_BusinessAcquisitionAxis
= umh_HolidayMobileVillageMember
     
Purchase price of acquired entity             7,250,000umh_BusinessAcquisitionCostOfAcquiredEntityPurchasePriceOne
/ us-gaap_BusinessAcquisitionAxis
= umh_HolidayMobileVillageMember
     
Percentage of average occupancy             82.00%umh_PercentageOfAverageOccupancy
/ us-gaap_BusinessAcquisitionAxis
= umh_HolidayMobileVillageMember
     
Rolling Hills Estates [Member]                    
Investment Property and Equipment (Textual)                    
Number of developed home sites company own and operates               91umh_NumberOfDevelopedHomeSitesCompanyOwnAndOperates
/ us-gaap_BusinessAcquisitionAxis
= umh_RollingHillsEstatesMember
   
Area of acquired real estate property (in acres)               32umh_AreaOfAcquiredRealEstateProperty
/ us-gaap_BusinessAcquisitionAxis
= umh_RollingHillsEstatesMember
   
Purchase price of acquired entity               $ 1,720,000umh_BusinessAcquisitionCostOfAcquiredEntityPurchasePriceOne
/ us-gaap_BusinessAcquisitionAxis
= umh_RollingHillsEstatesMember
   
Percentage of average occupancy               91.00%umh_PercentageOfAverageOccupancy
/ us-gaap_BusinessAcquisitionAxis
= umh_RollingHillsEstatesMember