6. Loans and Allowance for Loan Losses: Schedule of Bank Loans by Class According to Credit Quality (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Good Excellent
Loans Receivable, Gross, Commercial, Mortgage	$ 291	$ 298
Good Excellent | Commercial And Industrial
Loans Receivable, Gross, Commercial, Mortgage	250	250
Good Excellent | Commercial And Industrial | Commercial
Loans Receivable, Gross, Commercial, Mortgage	250	250
Good Excellent | Commercial And Industrial | :S B A Loans
Loans Receivable, Gross, Commercial, Mortgage	0	0
Good Excellent | Commercial And Industrial | Asset Based
Loans Receivable, Gross, Commercial, Mortgage	0	0
Good Excellent | Commercial Real Estate Portfolio Segment
Loans Receivable, Gross, Commercial, Mortgage	41	48
Good Excellent | Commercial Real Estate Portfolio Segment | :S B A Loans
Loans Receivable, Gross, Commercial, Mortgage	0	0
Good Excellent | Commercial Real Estate Portfolio Segment | Commercial Mortgages
Loans Receivable, Gross, Commercial, Mortgage	0	0
Good Excellent | Commercial Real Estate Portfolio Segment | Construction
Loans Receivable, Gross, Commercial, Mortgage	0	0
Good Excellent | Commercial Real Estate Portfolio Segment | Religious Organizations
Loans Receivable, Gross, Commercial, Mortgage	41	48
Satisfactory
Loans Receivable, Gross, Commercial, Mortgage	16,764	17,415
Satisfactory | Commercial And Industrial
Loans Receivable, Gross, Commercial, Mortgage	1,285	972
Satisfactory | Commercial And Industrial | Commercial
Loans Receivable, Gross, Commercial, Mortgage	691	423
Satisfactory | Commercial And Industrial | :S B A Loans
Loans Receivable, Gross, Commercial, Mortgage	0	0
Satisfactory | Commercial And Industrial | Asset Based
Loans Receivable, Gross, Commercial, Mortgage	594	549
Satisfactory | Commercial Real Estate Portfolio Segment
Loans Receivable, Gross, Commercial, Mortgage	15,479	16,443
Satisfactory | Commercial Real Estate Portfolio Segment | :S B A Loans
Loans Receivable, Gross, Commercial, Mortgage	184	588
Satisfactory | Commercial Real Estate Portfolio Segment | Commercial Mortgages
Loans Receivable, Gross, Commercial, Mortgage	7,934	7,876
Satisfactory | Commercial Real Estate Portfolio Segment | Construction
Loans Receivable, Gross, Commercial, Mortgage	106	419
Satisfactory | Commercial Real Estate Portfolio Segment | Religious Organizations
Loans Receivable, Gross, Commercial, Mortgage	7,255	7,560
Pass 1
Loans Receivable, Gross, Commercial, Mortgage	2,683	3,770
Pass 1 | Commercial And Industrial
Loans Receivable, Gross, Commercial, Mortgage	164	171
Pass 1 | Commercial And Industrial | Commercial
Loans Receivable, Gross, Commercial, Mortgage	0	0
Pass 1 | Commercial And Industrial | :S B A Loans
Loans Receivable, Gross, Commercial, Mortgage	16	19
Pass 1 | Commercial And Industrial | Asset Based
Loans Receivable, Gross, Commercial, Mortgage	148	152
Pass 1 | Commercial Real Estate Portfolio Segment
Loans Receivable, Gross, Commercial, Mortgage	2,519	3,599
Pass 1 | Commercial Real Estate Portfolio Segment | :S B A Loans
Loans Receivable, Gross, Commercial, Mortgage	0	0
Pass 1 | Commercial Real Estate Portfolio Segment | Commercial Mortgages
Loans Receivable, Gross, Commercial, Mortgage	1,693	2,764
Pass 1 | Commercial Real Estate Portfolio Segment | Construction
Loans Receivable, Gross, Commercial, Mortgage	0	0
Pass 1 | Commercial Real Estate Portfolio Segment | Religious Organizations
Loans Receivable, Gross, Commercial, Mortgage	826	835
Special Mention
Loans Receivable, Gross, Commercial, Mortgage	474	36
Special Mention | Commercial And Industrial
Loans Receivable, Gross, Commercial, Mortgage	15	19
Special Mention | Commercial And Industrial | Commercial
Loans Receivable, Gross, Commercial, Mortgage	15	19
Special Mention | Commercial And Industrial | :S B A Loans
Loans Receivable, Gross, Commercial, Mortgage	0	0
Special Mention | Commercial And Industrial | Asset Based
Loans Receivable, Gross, Commercial, Mortgage	0	0
Special Mention | Commercial Real Estate Portfolio Segment
Loans Receivable, Gross, Commercial, Mortgage	459	17
Special Mention | Commercial Real Estate Portfolio Segment | :S B A Loans
Loans Receivable, Gross, Commercial, Mortgage	0	0
Special Mention | Commercial Real Estate Portfolio Segment | Commercial Mortgages
Loans Receivable, Gross, Commercial, Mortgage	459	17
Special Mention | Commercial Real Estate Portfolio Segment | Construction
Loans Receivable, Gross, Commercial, Mortgage	0	0
Special Mention | Commercial Real Estate Portfolio Segment | Religious Organizations
Loans Receivable, Gross, Commercial, Mortgage	0	0
Substandard
Loans Receivable, Gross, Commercial, Mortgage	1,349	1,375
Substandard | Commercial And Industrial
Loans Receivable, Gross, Commercial, Mortgage	308	310
Substandard | Commercial And Industrial | Commercial
Loans Receivable, Gross, Commercial, Mortgage	216	217
Substandard | Commercial And Industrial | :S B A Loans
Loans Receivable, Gross, Commercial, Mortgage	0	0
Substandard | Commercial And Industrial | Asset Based
Loans Receivable, Gross, Commercial, Mortgage	92	93
Substandard | Commercial Real Estate Portfolio Segment
Loans Receivable, Gross, Commercial, Mortgage	1,041	1,065
Substandard | Commercial Real Estate Portfolio Segment | :S B A Loans
Loans Receivable, Gross, Commercial, Mortgage	78	81
Substandard | Commercial Real Estate Portfolio Segment | Commercial Mortgages
Loans Receivable, Gross, Commercial, Mortgage	779	797
Substandard | Commercial Real Estate Portfolio Segment | Construction
Loans Receivable, Gross, Commercial, Mortgage	0	0
Substandard | Commercial Real Estate Portfolio Segment | Religious Organizations
Loans Receivable, Gross, Commercial, Mortgage	184	187
Doubtful
Loans Receivable, Gross, Commercial, Mortgage	293	293
Doubtful | Commercial And Industrial
Loans Receivable, Gross, Commercial, Mortgage	76	76
Doubtful | Commercial And Industrial | Commercial
Loans Receivable, Gross, Commercial, Mortgage	0	0
Doubtful | Commercial And Industrial | :S B A Loans
Loans Receivable, Gross, Commercial, Mortgage	0	0
Doubtful | Commercial And Industrial | Asset Based
Loans Receivable, Gross, Commercial, Mortgage	76	76
Doubtful | Commercial Real Estate Portfolio Segment
Loans Receivable, Gross, Commercial, Mortgage	217	217
Doubtful | Commercial Real Estate Portfolio Segment | :S B A Loans
Loans Receivable, Gross, Commercial, Mortgage	0	0
Doubtful | Commercial Real Estate Portfolio Segment | Commercial Mortgages
Loans Receivable, Gross, Commercial, Mortgage	217	217
Doubtful | Commercial Real Estate Portfolio Segment | Construction
Loans Receivable, Gross, Commercial, Mortgage	0	0
Doubtful | Commercial Real Estate Portfolio Segment | Religious Organizations
Loans Receivable, Gross, Commercial, Mortgage	0	0
Loans Receivable, Gross, Commercial, Mortgage	21,854	23,187
Commercial And Industrial
Loans Receivable, Gross, Commercial, Mortgage	2,098	1,798
Commercial And Industrial | Commercial
Loans Receivable, Gross, Commercial, Mortgage	1,172	909
Commercial And Industrial | :S B A Loans
Loans Receivable, Gross, Commercial, Mortgage	16	19
Commercial And Industrial | Asset Based
Loans Receivable, Gross, Commercial, Mortgage	910	870
Commercial Real Estate Portfolio Segment
Loans Receivable, Gross, Commercial, Mortgage	19,756	21,389
Commercial Real Estate Portfolio Segment | :S B A Loans
Loans Receivable, Gross, Commercial, Mortgage	262	669
Commercial Real Estate Portfolio Segment | Commercial Mortgages
Loans Receivable, Gross, Commercial, Mortgage	11,082	11,671
Commercial Real Estate Portfolio Segment | Construction
Loans Receivable, Gross, Commercial, Mortgage	106	419
Commercial Real Estate Portfolio Segment | Religious Organizations
Loans Receivable, Gross, Commercial, Mortgage	8,306	8,630
Performing
Loans and Leases Receivable, Gross, Consumer, Mortgage	1,164	1,392
Loans and Leases Receivable, Gross, Consumer, Other	696	809
Total consumer loans	1,860	2,201
Performing | Consumer Real Estate | Home Equity 1
Loans and Leases Receivable, Gross, Consumer, Mortgage	246	352
Performing | Consumer Real Estate | Home Equity Line Of Credit
Loans and Leases Receivable, Gross, Consumer, Mortgage	16	17
Performing | Consumer Real Estate | N14 Family Residential Mortgages
Loans and Leases Receivable, Gross, Consumer, Mortgage	902	1,023
Performing | Consumer And Other Loans | Student Loans
Loans and Leases Receivable, Gross, Consumer, Other	593	700
Performing | Consumer And Other Loans | Other 1
Loans and Leases Receivable, Gross, Consumer, Other	103	109
Nonperforming
Loans and Leases Receivable, Gross, Consumer, Mortgage	442	337
Loans and Leases Receivable, Gross, Consumer, Other	56	0
Total consumer loans	498	337
Nonperforming | Consumer Real Estate | Home Equity 1
Loans and Leases Receivable, Gross, Consumer, Mortgage	410	289
Nonperforming | Consumer Real Estate | Home Equity Line Of Credit
Loans and Leases Receivable, Gross, Consumer, Mortgage	0	0
Nonperforming | Consumer Real Estate | N14 Family Residential Mortgages
Loans and Leases Receivable, Gross, Consumer, Mortgage	32	48
Nonperforming | Consumer And Other Loans | Student Loans
Loans and Leases Receivable, Gross, Consumer, Other	56	0
Nonperforming | Consumer And Other Loans | Other 1
Loans and Leases Receivable, Gross, Consumer, Other	0	0
Subtotal
Loans and Leases Receivable, Gross, Consumer, Mortgage	1,606	1,729
Loans and Leases Receivable, Gross, Consumer, Other	752	809
Total consumer loans	2,358	2,538
Subtotal | Consumer Real Estate | Home Equity 1
Loans and Leases Receivable, Gross, Consumer, Mortgage	656	641
Subtotal | Consumer Real Estate | Home Equity Line Of Credit
Loans and Leases Receivable, Gross, Consumer, Mortgage	16	17
Subtotal | Consumer Real Estate | N14 Family Residential Mortgages
Loans and Leases Receivable, Gross, Consumer, Mortgage	934	1,071
Subtotal | Consumer And Other Loans | Student Loans
Loans and Leases Receivable, Gross, Consumer, Other	649	700
Subtotal | Consumer And Other Loans | Other 1
Loans and Leases Receivable, Gross, Consumer, Other	$ 103	$ 109