Note 13. Income Taxes: Summary of Tax Credit Carryforwards (Details) - USD ($)	May 31, 2035	May 31, 2034	May 31, 2033	May 31, 2032	May 31, 2030	May 31, 2028	May 31, 2027	May 31, 2026	May 31, 2025	May 31, 2024	May 31, 2023	May 31, 2022	May 31, 2021	May 31, 2020	May 31, 2019	May 31, 2018
Details
Tax Credit Carryforward, Amount	$ 505,217	$ 240,051	$ 1,605,369	$ 230,874	$ 8,065	$ 32,333	$ 55,133	$ 156,448	$ 217,636	$ 161,194	$ 80,079	$ 137,570	$ 124,157	$ 28,123	$ 72,578	$ 45,547

The amount of the tax credit carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32559-109319

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Carryforwards
-URI http://asc.fasb.org/extlink&oid=6506874

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant