5) Value of Business Acquired, Instangible Assets and Goodwill: Net amortization charged to income (Details) - USD ($)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Details
Value of business acquired - net amortization charged to income	$ 845,000	$ 916,000	$ 985,000	$ 1,065,000	$ 1,194,000	$ 851,374	$ 823,569