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Major Tenants (Tables)
 12 Months Ended
Dec. 31, 2019
Accounting Policies [Abstract]  
Schedule of Revenue by Major Customers by Reporting Segments [Table Text Block]
Major Tenants

Tenants
 
 
 
2019
 
2018
             
Sterling Jewelers Inc.
   
$
327,995
$
327,995
Best Buy Stores, L.P.
     
282,241
 
281,992
Tractor Supply Company
     
147,880
 
183,565
Dollar Tree Stores, Inc.
     
130,277
 
130,278
Bio-Medical Applications of Louisiana, LLC
     
112,772
 
112,772
Aggregate rental income of major tenants
   
$
1,001,165
$
1,036,602
Aggregate rental income of major tenants
as a percentage of total rental income
     
100%
 
100%