6. Loans and Allowance for Loan Losses: Schedule of Impaired Loans (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Total
Impaired Financing Receivable, Unpaid Principal Balance	$ 1,278		$ 1,278		$ 1,277
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	1,122		1,122		1,277
Impaired Financing Receivable, with Related Allowance, Recorded Investment	156		156		0
Impaired Financing Receivable, Recorded Investment	1,278		1,278		1,277
Impaired Financing Receivable, Related Allowance	31		31		0
Average Recorded Investment	1,292	$ 2,062	1,288	$ 2,070
Interest recognized on impaired loans	0	0	0	0
Commercial And Industrial
Impaired Financing Receivable, Unpaid Principal Balance	76		76		76
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	76		76		76
Impaired Financing Receivable, with Related Allowance, Recorded Investment	0		0		0
Impaired Financing Receivable, Recorded Investment	76		76		76
Impaired Financing Receivable, Related Allowance	0		0		0
Average Recorded Investment	76	265	76	270
Interest recognized on impaired loans	0	0	0	0
Commercial And Industrial \| Commercial
Impaired Financing Receivable, Unpaid Principal Balance	0		0		0
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	0		0		0
Impaired Financing Receivable, with Related Allowance, Recorded Investment	0		0		0
Impaired Financing Receivable, Recorded Investment	0		0		0
Impaired Financing Receivable, Related Allowance	0		0		0
Average Recorded Investment	0	0	0	10
Interest recognized on impaired loans	0	0	0	0
Commercial And Industrial \| :S B A Loans
Impaired Financing Receivable, Unpaid Principal Balance	0		0		0
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	0		0		0
Impaired Financing Receivable, with Related Allowance, Recorded Investment	0		0		0
Impaired Financing Receivable, Recorded Investment	0		0		0
Impaired Financing Receivable, Related Allowance	0		0		0
Average Recorded Investment	0	0		0
Interest recognized on impaired loans	0	0	0	0
Commercial And Industrial \| Asset Based
Impaired Financing Receivable, Unpaid Principal Balance	76		76		76
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	76		76		76
Impaired Financing Receivable, with Related Allowance, Recorded Investment	0		0		0
Impaired Financing Receivable, Recorded Investment	76		76		76
Impaired Financing Receivable, Related Allowance	0		0		0
Average Recorded Investment	76	265	76	260
Interest recognized on impaired loans	0	0	0	0
Commercial Real Estate Portfolio Segment
Impaired Financing Receivable, Unpaid Principal Balance	1,202		1,202		1,201
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	1,046		1,046		1,201
Impaired Financing Receivable, with Related Allowance, Recorded Investment	156		156		0
Impaired Financing Receivable, Recorded Investment	1,202		1,202		1,201
Impaired Financing Receivable, Related Allowance	31		31		0
Average Recorded Investment	1,216	1,797	1,212	1,800
Interest recognized on impaired loans	0	0	0	0
Commercial Real Estate Portfolio Segment \| :S B A Loans
Impaired Financing Receivable, Unpaid Principal Balance	75		75		81
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	75		75		81
Impaired Financing Receivable, with Related Allowance, Recorded Investment	0		0		0
Impaired Financing Receivable, Recorded Investment	75		75		81
Impaired Financing Receivable, Related Allowance	0		0		0
Average Recorded Investment	76	250	77	252
Interest recognized on impaired loans	0	0	0	0
Commercial Real Estate Portfolio Segment \| Commercial Mortgages
Impaired Financing Receivable, Unpaid Principal Balance	945		945		933
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	789		789		933
Impaired Financing Receivable, with Related Allowance, Recorded Investment	156		156		0
Impaired Financing Receivable, Recorded Investment	945		945		933
Impaired Financing Receivable, Related Allowance	31		31		0
Average Recorded Investment	958	1,355	951	1,355
Interest recognized on impaired loans	0	0	0	0
Commercial Real Estate Portfolio Segment \| Religious Organizations
Impaired Financing Receivable, Unpaid Principal Balance	182		182		187
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	182		182		187
Impaired Financing Receivable, with Related Allowance, Recorded Investment	0		0		0
Impaired Financing Receivable, Recorded Investment	182		182		187
Impaired Financing Receivable, Related Allowance	0		0		$ 0
Average Recorded Investment	182	192	184	193
Interest recognized on impaired loans	$ 0	$ 0	$ 0	$ 0

Average amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=123577603&loc=d3e5212-111524

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 17
-URI http://asc.fasb.org/extlink&oid=123577603&loc=d3e5258-111524

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