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3 - Income Taxes: Schedule of Effective Income Tax Rate Reconciliation (Details) - USD ($)
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Details    
Expected tax at U.S. statutory rate $ 767,000 $ 297,000
Expected tax at U.S. statutory rate, % 21.00% 21.00%
Permanent differences $ (14,000) $ (2,000)
Permanent differences, % (0.40%) (0.10%)
State taxes, net of federal benefit $ 32,000 $ 6,000
State taxes, net of federal benefit, % 0.90% 0.40%
Income tax expense $ 785,000 $ 301,000
Income tax expense, % 21.50% 21.30%