4. Loans and Allowance For Loan Losses: Schedule of the Composition of Net Loans (Details) - USD ($)	Dec. 31, 2017	Dec. 31, 2016
Commercial real estate	$ 21,488,000	$ 26,414,000
Consumer real estate	1,729,000	2,232,000
Allowance for loan losses	(180,000)	(300,000)
Loans, net	25,545,000	26,535,000
Commercial And Industrial
Commercial and industrial	1,798,000	2,149,000
Commercial Real Estate Portfolio Segment
Commercial real estate	21,389,000	21,488,000
Consumer Real Estate
Consumer real estate	1,729,000	2,232,000
Consumer And Other Loans
Consumer loans other	809,000	966,000
Home Equity Line of Credit | Consumer Real Estate
Consumer real estate	17,000	19,000
Commercial | Commercial And Industrial
Commercial and industrial	909,000	890,000
SBA Loans | Commercial And Industrial
Commercial and industrial	19,000	0
SBA Loans | Commercial Real Estate Portfolio Segment
Commercial real estate	669,000	255,000
Asset Based Loans | Commercial And Industrial
Commercial and industrial	870,000	1,259,000
Commercial Mortgages | Commercial Real Estate Portfolio Segment
Commercial real estate	11,671,000	11,385,000
Construction | Commercial Real Estate Portfolio Segment
Commercial real estate	419,000	542,000
Religious Organizations | Commercial Real Estate Portfolio Segment
Commercial real estate	8,630,000	9,306,000
Home Equity Loans | Consumer Real Estate
Consumer real estate	641,000	799,000
Family Residential Mortgage | Consumer Real Estate
Consumer real estate	1,071,000	1,414,000
Student Loans | Consumer And Other Loans
Consumer loans other	700,000	855,000
Other | Consumer And Other Loans
Consumer loans other	$ 109,000	$ 111,000