6. Loans and Allowance for Loan Losses: Schedule of Bank Loans by Class According to Credit Quality (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Good Excellent
Loans Receivable, Gross, Commercial, Mortgage	$ 286	$ 298
Good Excellent | Commercial And Industrial
Loans Receivable, Gross, Commercial, Mortgage	0	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	0	0
Good Excellent | Commercial Real Estate Portfolio Segment
Loans Receivable, Gross, Commercial, Mortgage	286	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	250	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	36	48
Satisfactory
Loans Receivable, Gross, Commercial, Mortgage	14,809	17,415
Satisfactory | Commercial And Industrial
Loans Receivable, Gross, Commercial, Mortgage	1,112	972
Satisfactory | Commercial And Industrial | Commercial
Loans Receivable, Gross, Commercial, Mortgage	598	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	514	549
Satisfactory | Commercial Real Estate Portfolio Segment
Loans Receivable, Gross, Commercial, Mortgage	14,809	16,443
Satisfactory | Commercial Real Estate Portfolio Segment | :S B A Loans
Loans Receivable, Gross, Commercial, Mortgage	255	588
Satisfactory | Commercial Real Estate Portfolio Segment | Commercial Mortgages
Loans Receivable, Gross, Commercial, Mortgage	7,953	7,876
Satisfactory | Commercial Real Estate Portfolio Segment | Construction
Loans Receivable, Gross, Commercial, Mortgage	147	419
Satisfactory | Commercial Real Estate Portfolio Segment | Religious Organizations
Loans Receivable, Gross, Commercial, Mortgage	5,342	7,560
Pass 1
Loans Receivable, Gross, Commercial, Mortgage	3,944	3,770
Pass 1 | Commercial And Industrial
Loans Receivable, Gross, Commercial, Mortgage	129	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	129	152
Pass 1 | Commercial Real Estate Portfolio Segment
Loans Receivable, Gross, Commercial, Mortgage	3,944	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	1,681	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	2,134	835
Special Mention
Loans Receivable, Gross, Commercial, Mortgage	64	36
Special Mention | Commercial And Industrial
Loans Receivable, Gross, Commercial, Mortgage	52	19
Special Mention | Commercial And Industrial | Commercial
Loans Receivable, Gross, Commercial, Mortgage	52	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	64	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	12	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	1,747	1,375
Substandard | Commercial And Industrial
Loans Receivable, Gross, Commercial, Mortgage	430	310
Substandard | Commercial And Industrial | Commercial
Loans Receivable, Gross, Commercial, Mortgage	215	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	215	93
Substandard | Commercial Real Estate Portfolio Segment
Loans Receivable, Gross, Commercial, Mortgage	1,317	1,065
Substandard | Commercial Real Estate Portfolio Segment | :S B A Loans
Loans Receivable, Gross, Commercial, Mortgage	0	81
Substandard | Commercial Real Estate Portfolio Segment | Commercial Mortgages
Loans Receivable, Gross, Commercial, Mortgage	1,135	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	182	187
Doubtful
Loans Receivable, Gross, Commercial, Mortgage	0	293
Doubtful | Commercial And Industrial
Loans Receivable, Gross, Commercial, Mortgage	0	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	0	76
Doubtful | Commercial Real Estate Portfolio Segment
Loans Receivable, Gross, Commercial, Mortgage	0	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	0	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	20,850	23,187
Commercial And Industrial
Loans Receivable, Gross, Commercial, Mortgage	1,723	1,798
Commercial And Industrial | Commercial
Loans Receivable, Gross, Commercial, Mortgage	865	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	858	870
Commercial Real Estate Portfolio Segment
Loans Receivable, Gross, Commercial, Mortgage	19,127	21,389
Commercial Real Estate Portfolio Segment | :S B A Loans
Loans Receivable, Gross, Commercial, Mortgage	255	669
Commercial Real Estate Portfolio Segment | Commercial Mortgages
Loans Receivable, Gross, Commercial, Mortgage	11,031	11,671
Commercial Real Estate Portfolio Segment | Construction
Loans Receivable, Gross, Commercial, Mortgage	147	419
Commercial Real Estate Portfolio Segment | Religious Organizations
Loans Receivable, Gross, Commercial, Mortgage	7,694	8,630
Performing
Loans and Leases Receivable, Gross, Consumer, Mortgage	887	1,392
Loans and Leases Receivable, Gross, Consumer, Other	695	809
Total consumer loans	1,582	2,201
Performing | Consumer Real Estate | Home Equity 1
Loans and Leases Receivable, Gross, Consumer, Mortgage	238	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	633	1,023
Performing | Consumer And Other Loans | Student Loans
Loans and Leases Receivable, Gross, Consumer, Other	607	700
Performing | Consumer And Other Loans | Other 1
Loans and Leases Receivable, Gross, Consumer, Other	88	109
Nonperforming
Loans and Leases Receivable, Gross, Consumer, Mortgage	434	337
Loans and Leases Receivable, Gross, Consumer, Other	22	0
Total consumer loans	456	337
Nonperforming | Consumer Real Estate | Home Equity 1
Loans and Leases Receivable, Gross, Consumer, Mortgage	408	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	21	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	1,321	1,729
Loans and Leases Receivable, Gross, Consumer, Other	717	809
Total consumer loans	2,038	2,538
Subtotal | Consumer Real Estate | Home Equity 1
Loans and Leases Receivable, Gross, Consumer, Mortgage	646	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	659	1,071
Subtotal | Consumer And Other Loans | Student Loans
Loans and Leases Receivable, Gross, Consumer, Other	628	700
Subtotal | Consumer And Other Loans | Other 1
Loans and Leases Receivable, Gross, Consumer, Other	$ 89	$ 109