5. Bank Premises and Equipment: Schedule of Major Classes of Bank Premises and Equipment (Details) - USD ($)	12 Months Ended
Dec. 31, 2016	Dec. 31, 2015
Property, Plant and Equipment, Gross	$ 2,164,000	$ 2,085,000
Less accumulated depreciation	(1,784,000)	(1,592,000)
Bank premises and equipment, net	380,471	492,730
Leaseholds and Leasehold Improvements
Property, Plant and Equipment, Gross	$ 832,000	788,000
Leaseholds and Leasehold Improvements \| Minimum
Estimated Useful Life	10 years
Leaseholds and Leasehold Improvements \| Maximum
Estimated Useful Life	15 years
Furniture and Fixtures
Property, Plant and Equipment, Gross	$ 1,332,000	$ 1,297,000
Furniture and Fixtures \| Minimum
Estimated Useful Life	3 years
Furniture and Fixtures \| Maximum
Estimated Useful Life	7 years

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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