6. Loans and Allowance For Loan Losses: Schedule of Bank Loans by Class According to Credit Quality (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Commercial real estate	$ 20,591	$ 21,488
Consumer real estate	1,841	2,232
Consumer loans other	807	966
Total consumer loans	2,648	3,198
Good/Excellent
Total commercial loans	313	312
Satisfactory
Total commercial loans	16,380	18,011
Pass
Total commercial loans	3,278	2,333
Special Mention
Total commercial loans	620	844
Substandard
Total commercial loans	1,986	1,843
Doubtful
Total commercial loans	295	297
Total
Total commercial loans	22,882	23,637
Performing
Consumer real estate	1,533	1,812
Consumer loans other	807	966
Total consumer loans	2,340	2,778
Nonperforming
Consumer real estate	308	420
Consumer loans other	0	0
Total consumer loans	308	420
Commercial And Industrial | Good/Excellent
Total commercial loans	260	260
Commercial And Industrial | Satisfactory
Total commercial loans	1,180	1,073
Commercial And Industrial | Pass
Total commercial loans	288	207
Commercial And Industrial | Special Mention
Total commercial loans	26	38
Commercial And Industrial | Substandard
Total commercial loans	461	495
Commercial And Industrial | Doubtful
Total commercial loans	76	76
Commercial And Industrial | Total
Total commercial loans	2,291	2,149
Consumer Real Estate | Total | Home Equity
Consumer real estate	752	799
Consumer Real Estate | Total | Home Equity Line Of Credit
Consumer real estate	17	19
Consumer Real Estate | Total | 1-4 Family Residential Mortgages
Consumer real estate	1,072	1,414
Consumer Real Estate | Performing | Home Equity
Consumer real estate	444	494
Consumer Real Estate | Performing | Home Equity Line Of Credit
Consumer real estate	17	19
Consumer Real Estate | Performing | 1-4 Family Residential Mortgages
Consumer real estate	1,072	1,339
Consumer Real Estate | Nonperforming | Home Equity
Consumer real estate	308	345
Consumer Real Estate | Nonperforming | Home Equity Line Of Credit
Consumer real estate	0	0
Consumer Real Estate | Nonperforming | 1-4 Family Residential Mortgages
Consumer real estate	0	75
Consumer And Other Loans | Total | Student Loans
Consumer loans other	709	855
Consumer And Other Loans | Total | Other
Consumer loans other	98	111
Consumer And Other Loans | Total | Consumer Installment
Consumer loans other		0
Consumer And Other Loans | Performing | Student Loans
Consumer loans other	709	855
Consumer And Other Loans | Performing | Other
Consumer loans other	98	111
Consumer And Other Loans | Performing | Consumer Installment
Consumer loans other		0
Consumer And Other Loans | Nonperforming | Student Loans
Consumer loans other	0	0
Consumer And Other Loans | Nonperforming | Other
Consumer loans other	0	0
Consumer And Other Loans | Nonperforming | Consumer Installment
Consumer loans other		0
Commercial Real Estate Portfolio Segment | Good/Excellent
Commercial real estate	53	49
Commercial Real Estate Portfolio Segment | Satisfactory
Commercial real estate	15,200	16,938
Commercial Real Estate Portfolio Segment | Pass
Commercial real estate	2,990	2,126
Commercial Real Estate Portfolio Segment | Special Mention
Commercial real estate	594	806
Commercial Real Estate Portfolio Segment | Substandard
Commercial real estate	1,525	1,348
Commercial Real Estate Portfolio Segment | Doubtful
Commercial real estate	219	221
Commercial Real Estate Portfolio Segment | Total
Commercial real estate	20,591	21,488
Commercial | Commercial And Industrial | Good/Excellent
Total commercial loans	260	260
Commercial | Commercial And Industrial | Satisfactory
Total commercial loans	341	331
Commercial | Commercial And Industrial | Pass
Total commercial loans	4	9
Commercial | Commercial And Industrial | Special Mention
Total commercial loans	26	38
Commercial | Commercial And Industrial | Substandard
Total commercial loans	218	252
Commercial | Commercial And Industrial | Doubtful
Total commercial loans	0	0
Commercial | Commercial And Industrial | Total
Total commercial loans	849	890
SBA Loans | Commercial And Industrial | Good/Excellent
Total commercial loans	0
SBA Loans | Commercial And Industrial | Satisfactory
Total commercial loans	0
SBA Loans | Commercial And Industrial | Pass
Total commercial loans	41
SBA Loans | Commercial And Industrial | Special Mention
Total commercial loans	0
SBA Loans | Commercial And Industrial | Substandard
Total commercial loans	0
SBA Loans | Commercial And Industrial | Doubtful
Total commercial loans	0
SBA Loans | Commercial And Industrial | Total
Total commercial loans	41
SBA Loans | Commercial Real Estate Portfolio Segment | Good/Excellent
Commercial real estate	0	0
SBA Loans | Commercial Real Estate Portfolio Segment | Satisfactory
Commercial real estate	209	2
SBA Loans | Commercial Real Estate Portfolio Segment | Pass
Commercial real estate	1	0
SBA Loans | Commercial Real Estate Portfolio Segment | Special Mention
Commercial real estate	0	160
SBA Loans | Commercial Real Estate Portfolio Segment | Substandard
Commercial real estate	244	93
SBA Loans | Commercial Real Estate Portfolio Segment | Doubtful
Commercial real estate	0	0
SBA Loans | Commercial Real Estate Portfolio Segment | Total
Commercial real estate	454	255
Asset Based | Commercial And Industrial | Good/Excellent
Total commercial loans	0	0
Asset Based | Commercial And Industrial | Satisfactory
Total commercial loans	839	742
Asset Based | Commercial And Industrial | Pass
Total commercial loans	243	198
Asset Based | Commercial And Industrial | Special Mention
Total commercial loans	0	0
Asset Based | Commercial And Industrial | Substandard
Total commercial loans	243	243
Asset Based | Commercial And Industrial | Doubtful
Total commercial loans	76	76
Asset Based | Commercial And Industrial | Total
Total commercial loans	1,401	1,259
Commercial Mortgages | Commercial Real Estate Portfolio Segment | Good/Excellent
Commercial real estate	0	0
Commercial Mortgages | Commercial Real Estate Portfolio Segment | Satisfactory
Commercial real estate	6,983	8,193
Commercial Mortgages | Commercial Real Estate Portfolio Segment | Pass
Commercial real estate	2,253	1,375
Commercial Mortgages | Commercial Real Estate Portfolio Segment | Special Mention
Commercial real estate	489	537
Commercial Mortgages | Commercial Real Estate Portfolio Segment | Substandard
Commercial real estate	1,092	1,059
Commercial Mortgages | Commercial Real Estate Portfolio Segment | Doubtful
Commercial real estate	219	221
Commercial Mortgages | Commercial Real Estate Portfolio Segment | Total
Commercial real estate	11,046	11,385
Construction | Commercial Real Estate Portfolio Segment | Good/Excellent
Commercial real estate	0	0
Construction | Commercial Real Estate Portfolio Segment | Satisfactory
Commercial real estate	406	542
Construction | Commercial Real Estate Portfolio Segment | Pass
Commercial real estate	0	0
Construction | Commercial Real Estate Portfolio Segment | Special Mention
Commercial real estate	0	0
Construction | Commercial Real Estate Portfolio Segment | Substandard
Commercial real estate	0	0
Construction | Commercial Real Estate Portfolio Segment | Doubtful
Commercial real estate	0	0
Construction | Commercial Real Estate Portfolio Segment | Total
Commercial real estate	406	542
Religious Organizations | Commercial Real Estate Portfolio Segment | Good/Excellent
Commercial real estate	53	49
Religious Organizations | Commercial Real Estate Portfolio Segment | Satisfactory
Commercial real estate	7,602	8,201
Religious Organizations | Commercial Real Estate Portfolio Segment | Pass
Commercial real estate	736	751
Religious Organizations | Commercial Real Estate Portfolio Segment | Special Mention
Commercial real estate	105	109
Religious Organizations | Commercial Real Estate Portfolio Segment | Substandard
Commercial real estate	189	196
Religious Organizations | Commercial Real Estate Portfolio Segment | Doubtful
Commercial real estate	0	0
Religious Organizations | Commercial Real Estate Portfolio Segment | Total
Commercial real estate	$ 8,685	$ 9,306