7. Other Real Estate Owned: Schedule of Change in Other Real Estate Owned (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
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Other Real Estate, Beginning Balance	$ 447,000	$ 447,000	$ 447,371	$ 480,000
Additions, transfers from loans	0	0	0	0
Sales	0	0	0	(33,000)
Other Real Estate, Period Increase (Decrease)	447,000	447,000	447,000	447,000
Write-ups	0	0	0	0
Other Real Estate, Ending Balance	$ 447,371	$ 447,000	$ 447,371	$ 447,000