Marketable Securities: Unrealized losses on marketable securities and their tax effects (Details) - USD ($)	3 Months Ended
Jun. 30, 2023	Jun. 30, 2022
Details
Unrealized loss from marketable securities	$ (300,437)	$ (433,376)
Tax effects	65,736	94,823
Unrealized loss from marketable securities, net of tax	$ (234,701)	$ (338,553)

Represents the monetary amount of Unrealized loss from marketable securities, net of tax, during the indicated time period.

No definition available.

Name:	fil_UnrealizedLossFromMarketableSecuritiesNetOfTax
Namespace Prefix:	fil_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration