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Major Tenants (Tables)
 12 Months Ended
Dec. 31, 2021
Accounting Policies [Abstract]  
Schedule of Revenue by Major Customers by Reporting Segments [Table Text Block] Major Tenants
Tenants
     
2021
 
2020
             
Bassett Direct NC, LLC
   
$
137,999
$
257,608
Staples the Office Superstore East, Inc.
 
 
 
148,349
 
214,480
Dollar Tree / Family Dollar Group
   
 
126,772
 
208,618
Sterling Jewelers Inc.
 
 
 
210,461
 
203,946
Bio-Medical Applications of Ohio, Inc.
 
 
 
87,657
 
175,449
Aggregate rental income of major tenants
 
 
$
711,238
$
1,060,101
Aggregate rental income of major tenants
as a percentage of total rental income
 
 
 
100%
 
100%