Note 9 - Related Party Transactions (Details)	Mar. 31, 2020 USD ($)
Details
Balance on commercial loan (including principal and accrued interest)	$ 1.7
Balance on loan for premium payments (including principal and accrued interest)	$ 0.4

Represents the monetary amount of Balance on loan for premium payments (including principal and accrued interest), as of the indicated date.

No definition available.

Name:	fil_BalanceOnLoanForPremiumPaymentsIncludingPrincipalAndAccruedInterest
Namespace Prefix:	fil_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant