6. Loans and Allowance For Loan Losses: Interest income on impaired loans (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Average Recorded Investment	$ 1,854	$ 1,970	$ 1,782	$ 1,938
Interest recognized on impaired loans	2	0	3	2
Commercial And Industrial
Average Recorded Investment	320	230	286	317
Interest recognized on impaired loans	2	0	3	0
Commercial And Industrial | Commercial
Average Recorded Investment	201	182	200	269
Interest recognized on impaired loans	0	0	0	0
Commercial And Industrial | SBA Loans
Average Recorded Investment	46	48	46	48
Interest recognized on impaired loans	1	0	2	0
Commercial And Industrial | Asset Based Loans
Average Recorded Investment	73	0	40	0
Interest recognized on impaired loans	1	0	1	0
Commercial Real Estate Portfolio Segment
Average Recorded Investment	1,534	1,740	1,496	1,621
Interest recognized on impaired loans	0	0	0	2
Commercial Real Estate Portfolio Segment | SBA Loans
Average Recorded Investment	113	125	112	126
Interest recognized on impaired loans	0	0	0	0
Commercial Real Estate Portfolio Segment | Commercial Mortgages
Average Recorded Investment	934	998	896	875
Interest recognized on impaired loans	0	0	0	0
Commercial Real Estate Portfolio Segment | Religious Organizations
Average Recorded Investment	487	617	488	620
Interest recognized on impaired loans	$ 0	$ 0	$ 0	$ 2