6. Loans and Allowance for Loan Losses: Schedule of Bank Loans by Class According to Credit Quality (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Good Excellent
Loans Receivable, Gross, Commercial, Mortgage	$ 280	$ 298
Good Excellent | Commercial And Industrial
Loans Receivable, Gross, Commercial, Mortgage	250	250
Good Excellent | Commercial And Industrial | Commercial
Loans Receivable, Gross, Commercial, Mortgage	0	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	250	0
Good Excellent | Commercial Real Estate Portfolio Segment
Loans Receivable, Gross, Commercial, Mortgage	30	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	30	48
Satisfactory
Loans Receivable, Gross, Commercial, Mortgage	14,079	17,415
Satisfactory | Commercial And Industrial
Loans Receivable, Gross, Commercial, Mortgage	1,029	972
Satisfactory | Commercial And Industrial | Commercial
Loans Receivable, Gross, Commercial, Mortgage	492	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	537	549
Satisfactory | Commercial Real Estate Portfolio Segment
Loans Receivable, Gross, Commercial, Mortgage	13,050	16,443
Satisfactory | Commercial Real Estate Portfolio Segment | :S B A Loans
Loans Receivable, Gross, Commercial, Mortgage	178	588
Satisfactory | Commercial Real Estate Portfolio Segment | Commercial Mortgages
Loans Receivable, Gross, Commercial, Mortgage	7,372	7,876
Satisfactory | Commercial Real Estate Portfolio Segment | Construction
Loans Receivable, Gross, Commercial, Mortgage	305	419
Satisfactory | Commercial Real Estate Portfolio Segment | Religious Organizations
Loans Receivable, Gross, Commercial, Mortgage	5,195	7,560
Pass 1
Loans Receivable, Gross, Commercial, Mortgage	3,881	3,770
Pass 1 | Commercial And Industrial
Loans Receivable, Gross, Commercial, Mortgage	0	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	0	19
Pass 1 | Commercial And Industrial | Asset Based
Loans Receivable, Gross, Commercial, Mortgage	0	152
Pass 1 | Commercial Real Estate Portfolio Segment
Loans Receivable, Gross, Commercial, Mortgage	3,881	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	1,768	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	2,113	835
Special Mention
Loans Receivable, Gross, Commercial, Mortgage	9	36
Special Mention | Commercial And Industrial
Loans Receivable, Gross, Commercial, Mortgage	9	19
Special Mention | Commercial And Industrial | Commercial
Loans Receivable, Gross, Commercial, Mortgage	0	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	9	0
Special Mention | Commercial Real Estate Portfolio Segment
Loans Receivable, Gross, Commercial, Mortgage	0	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	0	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	1,503	1,375
Substandard | Commercial And Industrial
Loans Receivable, Gross, Commercial, Mortgage	350	310
Substandard | Commercial And Industrial | Commercial
Loans Receivable, Gross, Commercial, Mortgage	214	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	136	93
Substandard | Commercial Real Estate Portfolio Segment
Loans Receivable, Gross, Commercial, Mortgage	1,153	1,065
Substandard | Commercial Real Estate Portfolio Segment | :S B A Loans
Loans Receivable, Gross, Commercial, Mortgage	73	81
Substandard | Commercial Real Estate Portfolio Segment | Commercial Mortgages
Loans Receivable, Gross, Commercial, Mortgage	901	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	179	187
Doubtful
Loans Receivable, Gross, Commercial, Mortgage	363	293
Doubtful | Commercial And Industrial
Loans Receivable, Gross, Commercial, Mortgage	152	76
Doubtful | Commercial And Industrial | Commercial
Loans Receivable, Gross, Commercial, Mortgage	76	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	211	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	211	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	20,115	23,187
Commercial And Industrial
Loans Receivable, Gross, Commercial, Mortgage	1,790	1,798
Commercial And Industrial | Commercial
Loans Receivable, Gross, Commercial, Mortgage	782	909
Commercial And Industrial | :S B A Loans
Loans Receivable, Gross, Commercial, Mortgage	0	19
Commercial And Industrial | Asset Based
Loans Receivable, Gross, Commercial, Mortgage	1,008	870
Commercial Real Estate Portfolio Segment
Loans Receivable, Gross, Commercial, Mortgage	18,325	21,389
Commercial Real Estate Portfolio Segment | :S B A Loans
Loans Receivable, Gross, Commercial, Mortgage	251	669
Commercial Real Estate Portfolio Segment | Commercial Mortgages
Loans Receivable, Gross, Commercial, Mortgage	10,252	11,671
Commercial Real Estate Portfolio Segment | Construction
Loans Receivable, Gross, Commercial, Mortgage	305	419
Commercial Real Estate Portfolio Segment | Religious Organizations
Loans Receivable, Gross, Commercial, Mortgage	7,517	8,630
Performing
Loans and Leases Receivable, Gross, Consumer, Mortgage	793	1,392
Loans and Leases Receivable, Gross, Consumer, Other	690	809
Total consumer loans	1,483	2,201
Performing | Consumer Real Estate | Home Equity 1
Loans and Leases Receivable, Gross, Consumer, Mortgage	205	352
Performing | Consumer Real Estate | Home Equity Line Of Credit
Loans and Leases Receivable, Gross, Consumer, Mortgage	15	17
Performing | Consumer Real Estate | N14 Family Residential Mortgages
Loans and Leases Receivable, Gross, Consumer, Mortgage	573	1,023
Performing | Consumer And Other Loans | Student Loans
Loans and Leases Receivable, Gross, Consumer, Other	605	700
Performing | Consumer And Other Loans | Other 1
Loans and Leases Receivable, Gross, Consumer, Other	85	109
Nonperforming
Loans and Leases Receivable, Gross, Consumer, Mortgage	459	337
Loans and Leases Receivable, Gross, Consumer, Other	18	0
Total consumer loans	477	337
Nonperforming | Consumer Real Estate | Home Equity 1
Loans and Leases Receivable, Gross, Consumer, Mortgage	433	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	26	48
Nonperforming | Consumer And Other Loans | Student Loans
Loans and Leases Receivable, Gross, Consumer, Other	17	0
Nonperforming | Consumer And Other Loans | Other 1
Loans and Leases Receivable, Gross, Consumer, Other	1	0
Subtotal
Loans and Leases Receivable, Gross, Consumer, Mortgage	1,252	1,729
Loans and Leases Receivable, Gross, Consumer, Other	708	809
Total consumer loans	1,960	2,538
Subtotal | Consumer Real Estate | Home Equity 1
Loans and Leases Receivable, Gross, Consumer, Mortgage	638	641
Subtotal | Consumer Real Estate | Home Equity Line Of Credit
Loans and Leases Receivable, Gross, Consumer, Mortgage	15	17
Subtotal | Consumer Real Estate | N14 Family Residential Mortgages
Loans and Leases Receivable, Gross, Consumer, Mortgage	599	1,071
Subtotal | Consumer And Other Loans | Student Loans
Loans and Leases Receivable, Gross, Consumer, Other	622	700
Subtotal | Consumer And Other Loans | Other 1
Loans and Leases Receivable, Gross, Consumer, Other	$ 86	$ 109