Major Tenants (Tables)

12 Months Ended

Dec. 31, 2022

Accounting Policies [Abstract]

Schedule of Revenue by Major Customers by Reporting Segments [Table Text Block]

Major Tenants

Tenants	Industry		2022		2021
Sterling Jewelers Inc.	Retail	$	130,736	$	316,021
Best Buy Stores, L.P.	Retail		436,062		282,241
Dollar Tree Stores, Inc.	Retail		130,277		130,277
Advance Auto Parts, Inc.	Retail		110,000		0
Aggregate rental income of major tenants		$	807,075	$	728,539
Aggregate rental income of major tenants as a percentage of total rental income			90%		87%