Note 6 - Lessee Leases (Details) - USD ($)	3 Months Ended	9 Months Ended
Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Details
Rental expense under operating agreements	$ 45,707	$ 49,804	$ 141,429	$ 143,571

Represents the monetary amount of Rental expense under operating agreements, during the indicated time period.

No definition available.

Name:	fil_RentalExpenseUnderOperatingAgreements
Namespace Prefix:	fil_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration