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Significant Accounting Policies (Details) - USD ($)
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Real Estate Asset Acquisitions [Abstract]    
Amortization of above and below market rents $ 826,000 $ 207,000
Remaining term of in-place leases (in years) 10 years  
Amortization expense related to in-place leases, unamortized lease origination costs and tenant relationships $ 569,000 929,000
Asset impairment charge 532,951  
Intangible Assets [Abstract]    
Impairment of definite lived assets 415,000 590,000
Impairment of indefinite lived assets 0 0
Impairment of goodwill 0 0
Depreciation and Amortization of Buildings and Improvements [Abstract]    
Depreciation expense 9,100,000 9,700,000
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents [Abstract]    
Deposits in financial institutions that exceeded the federally insurable limits 9,100,000  
Cash balances may exceed federally insured limit 250,000  
Loss on federal deposit insurance corporation 0  
Tenant Receivables [Abstract]    
Allowance for uncollectible accounts 60,300 26,000
Deferred Leasing Costs [Abstract]    
Net deferred leasing costs 2,097,000 1,892,000
Amortization of deferred leasing costs 510,000 550,000
Deferred Financing Costs [Abstract]    
Unamortized deferred financing costs 1,427,000 1,683,000
Amortization of financing costs $ 675,087 $ 1,090,853
Income Tax Uncertainties [Abstract]    
Income Tax Examination Description We have elected to be taxed as a REIT under Sections 856 through 860 of the Internal Revenue Code (the “Code”), for federal income tax purposes. To maintain our qualification as a REIT, we are required to distribute at least 90% of our REIT taxable income to our stockholders and meet the various other requirements imposed by the Code relating to such matters as operating results, asset holdings, distribution levels and diversity of stock ownership  
Percentage of distributed taxable income to qualify as REIT 90.00%  
Loss Per Common Share [Abstract]    
Basic and diluted net income (loss) per share $ 0.19 $ (0.20)
Anti-dilutive shares included in computation of diluted earnings per share 733,944  
Anti-dilutive shares excluded from computation of diluted earnings per share   656,758
Federal [Member]    
Income Tax Uncertainties [Abstract]    
Net operating losses carry-forwards $ 77,500,000  
Mortgage Payable    
Deferred Financing Costs [Abstract]    
Amortization of financing costs 529,000 $ 461,000
Series B Preferred Stock [Member]    
Deferred Financing Costs [Abstract]    
Unamortized deferred financing costs 122,000 115,000
Series B Preferred Stock [Member] | Mortgage Payable    
Deferred Financing Costs [Abstract]    
Amortization of financing costs $ 147,000 630,000
Building and Building Improvements [Member]    
Depreciation and Amortization of Buildings and Improvements [Abstract]    
Estimated useful life 39 years  
Assets Leased to Others [Member] | Minimum [Member]    
Depreciation and Amortization of Buildings and Improvements [Abstract]    
Estimated useful life 1 year  
Assets Leased to Others [Member] | Maximum [Member]    
Depreciation and Amortization of Buildings and Improvements [Abstract]    
Estimated useful life 10 years  
Furniture and Fixtures [Member] | Minimum [Member]    
Depreciation and Amortization of Buildings and Improvements [Abstract]    
Estimated useful life 4 years  
Furniture and Fixtures [Member] | Maximum [Member]    
Depreciation and Amortization of Buildings and Improvements [Abstract]    
Estimated useful life 5 years  
Waterman Plaza [Member]    
Real Estate Asset Acquisitions [Abstract]    
Asset impairment charge $ 533,000 $ 0