6. Loans and Allowance For Loan Losses: Schedule of Age Analysis of Allowance for Loan Losses (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Beginning balance	$ 273,000	$ 384,000	$ 300,000	$ 418,000
Provision for loan losses	(46,000)	50,000	(76,000)	(5,000)
Charge-offs	(2,000)	(64,000)	(3,000)	(66,000)
Recoveries	27,000	5,000	31,000	8,000
Net charge-offs	25,000	(59,000)	28,000	(58,000)
Ending balance	252,000	355,000	252,000	355,000
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	50,000		50,000		$ 54,000
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	202,000		202,000		246,000
Period-end amount allocated to: Total	251,777		251,777		300,428
Loans, ending balance: Loans individually evaluated for impairment	2,038,000		2,038,000		2,083,000
Loans, ending balance: Loans collectively evaluated for impairment	23,559,000		23,559,000		24,752,000
Loans and Leases Receivable, Net of Deferred Income	25,596,605		25,596,605		26,835,859
Commercial And Industrial
Beginning balance	63,000	120,000	68,000	151,000
Provision for loan losses	10,000	(34,000)	4,000	(5,000)
Charge-offs	0	0	0	0
Recoveries	1,000	1,000	2,000	2,000
Net charge-offs	1,000	1,000	2,000	2,000
Ending balance	74,000	87,000	74,000	87,000
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	0		0		0
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	74,000		74,000		68,000
Period-end amount allocated to: Total	74,000		74,000		68,000
Loans, ending balance: Loans individually evaluated for impairment	243,000		243,000		352,000
Loans, ending balance: Loans collectively evaluated for impairment	2,091,000		2,091,000		1,797,000
Loans and Leases Receivable, Net of Deferred Income	2,334,000		2,334,000		2,149,000
Commercial Real Estate Portfolio Segment
Beginning balance	171,000	241,000	179,000	250,000
Provision for loan losses	(26,000)	45,000	(34,000)	0
Charge-offs	0	(41,000)	0	(41,000)
Recoveries	25,000	0	25,000	0
Net charge-offs	25,000	(41,000)	25,000	(41,000)
Ending balance	170,000	245,000	170,000	245,000
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	50,000		50,000		54,000
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	120,000		120,000		125,000
Period-end amount allocated to: Total	170,000		170,000		179,000
Loans, ending balance: Loans individually evaluated for impairment	1,795,000		1,795,000		1,731,000
Loans, ending balance: Loans collectively evaluated for impairment	18,672,000		18,672,000		19,757,000
Loans and Leases Receivable, Net of Deferred Income	20,467,000		20,467,000		21,488,000
Consumer Real Estate
Beginning balance	8,000	14,000	10,000	8,000
Provision for loan losses	0	19,000	(3,000)	0
Charge-offs	0	(22,000)	0	(22,000)
Recoveries	0	2,000	1,000	2,000
Net charge-offs	0	(20,000)	1,000	0
Ending balance	8,000	13,000	8,000	13,000
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	0		0		0
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	8,000		8,000		10,000
Period-end amount allocated to: Total	8,000		8,000		10,000
Loans, ending balance: Loans individually evaluated for impairment	0		0		0
Loans, ending balance: Loans collectively evaluated for impairment	1,907,000		1,907,000		2,232,000
Loans and Leases Receivable, Net of Deferred Income	1,907,000		1,907,000		2,232,000
Consumer And Other Loans
Beginning balance	11,000	9,000	11,000	9,000
Provision for loan losses	0	0	0	0
Charge-offs	(2,000)	(1,000)	(3,000)	(3,000)
Recoveries	1,000	2,000	3,000	4,000
Net charge-offs	(1,000)	1,000	0	1,000
Ending balance	11,000	10,000	11,000	10,000
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	0		0		0
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	10,000		10,000		11,000
Period-end amount allocated to: Total	10,000		10,000		11,000
Loans, ending balance: Loans individually evaluated for impairment	0		0		0
Loans, ending balance: Loans collectively evaluated for impairment	889,000		889,000		966,000
Loans and Leases Receivable, Net of Deferred Income	889,000		889,000		966,000
Unallocated
Beginning balance	20,000	0	32,000	0
Provision for loan losses	(30,000)	0	(43,000)	0
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Net charge-offs	0	0	0	0
Ending balance	(11,000)	$ 0	(11,000)	$ 0
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	0		0		0
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	(11,000)		(11,000)		32,000
Period-end amount allocated to: Total	(11,000)		(11,000)		32,000
Loans, ending balance: Loans individually evaluated for impairment	0		0		0
Loans, ending balance: Loans collectively evaluated for impairment	0		0		0
Loans and Leases Receivable, Net of Deferred Income	$ 0		$ 0		$ 0