5) Value of Business Acquired, Intangible Assets and Goodwill: Net amortization charged to income (Details) - USD ($)	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Goodwill and Intangible Assets Disclosure [Abstract]
Value of business acquired - net amortization charged to income	$ 707,000	$ 784,000	$ 854,000	$ 918,000	$ 1,019,000	$ 921,398	$ 851,374
Weighted average amortization period						6 years 1 month 2 days