13. Regulatory Matters: Schedule of the Company and the Bank's Actual Capital (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Company \| Actual Amount
Total capital to risk-weighted assets:
Capital	$ 3,338	$ 2,897
Tier I capital to risk-weighted assets:
Tier One Risk Based Capital	3,158	2,597
Common Equity Tier One Capital
Common Equity Tier One Capital	3,158	2,597
Tier One Leverage Capital
Tier One Leverage Capital	3,158	2,597
Tangible Capital
Tangible Capital	$ 3,158	$ 2,597
Company \| Actual Ratio
Total capital to risk-weighted assets:
Capital Ratio	10.22%	9.08%
Tier I capital to risk-weighted assets:
Tier One Risk Based Capital Ratio	0.0967	0.0814
Common Equity Tier One Capital
Common Equity Tier One Capital ratio	0.0967	0.0814
Tier One Leverage Capital
Tier One Leverage Capital ratio	0.0558	0.0482
Tangible Capital
Tangible Capital ratio	0.0558	0.0482
Bank \| Actual Amount
Total capital to risk-weighted assets:
Capital	$ 3,300	$ 2,897
Tier I capital to risk-weighted assets:
Tier One Risk Based Capital	3,120	2,597
Common Equity Tier One Capital
Common Equity Tier One Capital	3,120	2,597
Tier One Leverage Capital
Tier One Leverage Capital	3,120	2,597
Tangible Capital
Tangible Capital	3,120	2,597
Bank \| Well Capitalized Amount
Total capital to risk-weighted assets:
Capital	3,265	3,190
Tier I capital to risk-weighted assets:
Tier One Risk Based Capital	2,612	2,074
Common Equity Tier One Capital
Common Equity Tier One Capital	2,122	2,074
Tier One Leverage Capital
Tier One Leverage Capital	2,829	2,692
Bank \| Adequately Capitalized Amount
Total capital to risk-weighted assets:
Capital	2,612	2,552
Tier I capital to risk-weighted assets:
Tier One Risk Based Capital	1,959	1,914
Common Equity Tier One Capital
Common Equity Tier One Capital	1,469	1,436
Tier One Leverage Capital
Tier One Leverage Capital	$ 2,263	$ 2,154
Bank \| Actual Ratio
Total capital to risk-weighted assets:
Capital Ratio	10.11%	9.08%
Tier I capital to risk-weighted assets:
Tier One Risk Based Capital Ratio	0.0956	0.0814
Common Equity Tier One Capital
Common Equity Tier One Capital ratio	0.0956	0.0814
Tier One Leverage Capital
Tier One Leverage Capital ratio	0.0551	0.0482
Tangible Capital
Tangible Capital ratio	0.0551	0.0482
Bank \| Well Capitalized Ratio
Total capital to risk-weighted assets:
Capital Ratio	10.00%	10.00%
Tier I capital to risk-weighted assets:
Tier One Risk Based Capital Ratio	0.0800	0.08
Common Equity Tier One Capital
Common Equity Tier One Capital ratio	0.0650	0.065
Tier One Leverage Capital
Tier One Leverage Capital ratio	0.0500	0.05
Bank \| Adequately Capitalized Ratio
Total capital to risk-weighted assets:
Capital Ratio	8.00%	8.00%
Tier I capital to risk-weighted assets:
Tier One Risk Based Capital Ratio	0.0600	0.06
Common Equity Tier One Capital
Common Equity Tier One Capital ratio	0.0450	0.045
Tier One Leverage Capital
Tier One Leverage Capital ratio	0.0400	0.04

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