4. Loans and Allowance For Loan Losses: Schedule of Bank Loans by Class According to Credit Quality (Details) - USD ($)	Dec. 31, 2016	Dec. 31, 2015
Commercial real estate	$ 21,488,000	$ 26,414,000
Consumer real estate	2,232,000	2,841,000
Consumer loans other	966,000	1,202,000
Total consumer loans	3,198,000	4,043,000
Good/Excellent
Total commercial loans	309,000	285,000
Satisfactory
Total commercial loans	18,011,000	22,392,000
Pass
Total commercial loans	2,333,000	2,467,000
Special Mention
Total commercial loans	844,000	1,557,000
Substandard
Total commercial loans	1,843,000	2,476,000
Doubtful
Total commercial loans	297,000	299,000
Total
Total commercial loans	23,637,000	29,476,000
Performing
Consumer real estate	1,659,000	2,354,000
Consumer loans other	904,000	1,202,000
Total consumer loans	2,563,000	3,556,000
Nonperforming
Consumer real estate	573,000	487,000
Consumer loans other	62,000	0
Total consumer loans	635,000	487,000
Commercial And Industrial | Good/Excellent
Total commercial loans	260,000	285,000
Commercial And Industrial | Satisfactory
Total commercial loans	1,073,000	1,822,000
Commercial And Industrial | Pass
Total commercial loans	207,000	238,000
Commercial And Industrial | Special Mention
Total commercial loans	38,000	58,000
Commercial And Industrial | Substandard
Total commercial loans	495,000	583,000
Commercial And Industrial | Doubtful
Total commercial loans	76,000	76,000
Commercial And Industrial | Total
Total commercial loans	2,149,000	3,062,000
Consumer And Other Loans | Total | Student Loans
Consumer loans other	855,000	1,081,000
Consumer And Other Loans | Total | Other
Consumer loans other	111,000	121,000
Consumer And Other Loans | Performing | Student Loans
Consumer loans other	794,000	1,081,000
Consumer And Other Loans | Performing | Other
Consumer loans other	110,000	121,000
Consumer And Other Loans | Nonperforming | Student Loans
Consumer loans other	61,000	0
Consumer And Other Loans | Nonperforming | Other
Consumer loans other	1,000	0
Consumer Real Estate | Total | Home Equity
Consumer real estate	799,000	897,000
Consumer Real Estate | Total | Home Equity Line Of Credit
Consumer real estate	19,000	20,000
Consumer Real Estate | Total | 1-4 Family Residential Mortgages
Consumer real estate	1,414,000	1,924,000
Consumer Real Estate | Performing | Home Equity
Consumer real estate	301,000	539,000
Consumer Real Estate | Performing | Home Equity Line Of Credit
Consumer real estate	19,000	20,000
Consumer Real Estate | Performing | 1-4 Family Residential Mortgages
Consumer real estate	1,339,000	1,795,000
Consumer Real Estate | Nonperforming | Home Equity
Consumer real estate	498,000	358,000
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	75,000	129,000
Commercial Real Estate Portfolio Segment | Good/Excellent
Commercial real estate	49,000	0
Commercial Real Estate Portfolio Segment | Satisfactory
Commercial real estate	16,938,000	20,570,000
Commercial Real Estate Portfolio Segment | Pass
Commercial real estate	2,126,000	2,229,000
Commercial Real Estate Portfolio Segment | Special Mention
Commercial real estate	806,000	1,499,000
Commercial Real Estate Portfolio Segment | Substandard
Commercial real estate	1,348,000	1,893,000
Commercial Real Estate Portfolio Segment | Doubtful
Commercial real estate	221,000	223,000
Commercial Real Estate Portfolio Segment | Total
Commercial real estate	21,488,000	26,414,000
Commercial | Commercial And Industrial | Good/Excellent
Total commercial loans	260,000	285,000
Commercial | Commercial And Industrial | Satisfactory
Total commercial loans	331,000	922,000
Commercial | Commercial And Industrial | Pass
Total commercial loans	9,000	16,000
Commercial | Commercial And Industrial | Special Mention
Total commercial loans	38,000	58,000
Commercial | Commercial And Industrial | Substandard
Total commercial loans	252,000	254,000
Commercial | Commercial And Industrial | Doubtful
Total commercial loans	0	0
Commercial | Commercial And Industrial | Total
Total commercial loans	891,000	1,535,000
SBA Loans | Commercial And Industrial | Good/Excellent
Total commercial loans	0	0
SBA Loans | Commercial And Industrial | Satisfactory
Total commercial loans	0	0
SBA Loans | Commercial And Industrial | Pass
Total commercial loans	0	0
SBA Loans | Commercial And Industrial | Special Mention
Total commercial loans	0	0
SBA Loans | Commercial And Industrial | Substandard
Total commercial loans	0	40,000
SBA Loans | Commercial And Industrial | Doubtful
Total commercial loans	0	0
SBA Loans | Commercial And Industrial | Total
Total commercial loans	0	40,000
SBA Loans | Commercial Real Estate Portfolio Segment
Commercial real estate	255,000	353,000
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	2,000	82,000
SBA Loans | Commercial Real Estate Portfolio Segment | Pass
Commercial real estate	0	0
SBA Loans | Commercial Real Estate Portfolio Segment | Special Mention
Commercial real estate	160,000	0
SBA Loans | Commercial Real Estate Portfolio Segment | Substandard
Commercial real estate	93,000	271,000
SBA Loans | Commercial Real Estate Portfolio Segment | Doubtful
Commercial real estate	0	0
SBA Loans | Commercial Real Estate Portfolio Segment | Total
Commercial real estate	255,000	353,000
Asset Based | Commercial And Industrial | Good/Excellent
Total commercial loans	0	0
Asset Based | Commercial And Industrial | Satisfactory
Total commercial loans	742,000	900,000
Asset Based | Commercial And Industrial | Pass
Total commercial loans	198,000	222,000
Asset Based | Commercial And Industrial | Special Mention
Total commercial loans	0	0
Asset Based | Commercial And Industrial | Substandard
Total commercial loans	243,000	289,000
Asset Based | Commercial And Industrial | Doubtful
Total commercial loans	76,000	76,000
Asset Based | Commercial And Industrial | Total
Total commercial loans	1,259,000	1,487,000
Commercial Mortgages | Commercial Real Estate Portfolio Segment
Commercial real estate	11,385,000	13,774,000
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	8,193,000	10,689,000
Commercial Mortgages | Commercial Real Estate Portfolio Segment | Pass
Commercial real estate	1,375,000	1,098,000
Commercial Mortgages | Commercial Real Estate Portfolio Segment | Special Mention
Commercial real estate	537,000	613,000
Commercial Mortgages | Commercial Real Estate Portfolio Segment | Substandard
Commercial real estate	1,059,000	1,151,000
Commercial Mortgages | Commercial Real Estate Portfolio Segment | Doubtful
Commercial real estate	221,000	223,000
Commercial Mortgages | Commercial Real Estate Portfolio Segment | Total
Commercial real estate	11,385,000	13,774,000
Construction | Commercial Real Estate Portfolio Segment
Commercial real estate	542,000	2,175,000
Construction | Commercial Real Estate Portfolio Segment | Good/Excellent
Commercial real estate	0	0
Construction | Commercial Real Estate Portfolio Segment | Satisfactory
Commercial real estate	542,000	2,175,000
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	542,000	2,175,000
Religious Organizations | Commercial Real Estate Portfolio Segment
Commercial real estate	9,306,000	10,112,000
Religious Organizations | Commercial Real Estate Portfolio Segment | Good/Excellent
Commercial real estate	49,000	0
Religious Organizations | Commercial Real Estate Portfolio Segment | Satisfactory
Commercial real estate	8,201,000	7,624,000
Religious Organizations | Commercial Real Estate Portfolio Segment | Pass
Commercial real estate	751,000	1,131,000
Religious Organizations | Commercial Real Estate Portfolio Segment | Special Mention
Commercial real estate	109,000	886,000
Religious Organizations | Commercial Real Estate Portfolio Segment | Substandard
Commercial real estate	196,000	471,000
Religious Organizations | Commercial Real Estate Portfolio Segment | Doubtful
Commercial real estate	0	0
Religious Organizations | Commercial Real Estate Portfolio Segment | Total
Commercial real estate	$ 9,306,000	$ 10,112,000