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Commitments, Contingencies and Legal Matters (Details) (USD $)
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Commitments Contingencies and Legal Matters (Textual)    
Total loan balance 3,000,000umh_TotalLoanBalance  
Definitive Agreements [Member]    
Commitments Contingencies and Legal Matters (Textual)    
Number of property site 623umh_NumberOfPropertySite
/ umh_AgreementAxis
= umh_DefinitiveAgreementsMember		  
Number of acquired manufactured home communities 4umh_NumberOfAcquiredManufacturedHomeCommunities
/ umh_AgreementAxis
= umh_DefinitiveAgreementsMember		  
Aggregate purchase price of manufactured home communities 12,900,000us-gaap_PaymentsToAcquireProductiveAssets
/ umh_AgreementAxis
= umh_DefinitiveAgreementsMember		  
Purchase price for manufactured home community 3,800,000umh_PurchasePriceForManufacturedHomeCommunity
/ umh_AgreementAxis
= umh_DefinitiveAgreementsMember		  
Definitive Agreements [Member] | Minimum [Member]    
Commitments Contingencies and Legal Matters (Textual)    
Range of purchase price repossessed 55.00%umh_RangeOfPurchasePriceRepossessed
/ umh_AgreementAxis
= umh_DefinitiveAgreementsMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember		 80.00%umh_RangeOfPurchasePriceRepossessed
/ umh_AgreementAxis
= umh_DefinitiveAgreementsMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
Definitive Agreements [Member] | Maximum [Member]    
Commitments Contingencies and Legal Matters (Textual)    
Range of purchase price repossessed 100.00%umh_RangeOfPurchasePriceRepossessed
/ umh_AgreementAxis
= umh_DefinitiveAgreementsMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember		 95.00%umh_RangeOfPurchasePriceRepossessed
/ umh_AgreementAxis
= umh_DefinitiveAgreementsMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember