6. Loans and Allowance For Loan Losses: Schedule of Interest Income on Impaired Loans (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Average Recorded Investment	$ 2,080	$ 2,245
Interest recognized on impaired loans	0	4
Commercial And Industrial
Average Recorded Investment	352	194
Interest recognized on impaired loans	0	0
Commercial Real Estate Portfolio Segment
Average Recorded Investment	1,728	2,051
Interest recognized on impaired loans	0	4
Commercial | Commercial And Industrial
Average Recorded Investment	33	109
Interest recognized on impaired loans	0	0
SBA Loans | Commercial And Industrial
Average Recorded Investment	0	39
Interest recognized on impaired loans	0	0
SBA Loans | Commercial Real Estate Portfolio Segment
Average Recorded Investment	254	268
Interest recognized on impaired loans	0	2
Asset Based Loans | Commercial And Industrial
Average Recorded Investment	319	46
Interest recognized on impaired loans	0	0
Commercial Mortgages | Commercial Real Estate Portfolio Segment
Average Recorded Investment	1,280	1,329
Interest recognized on impaired loans	0	2
Religious Organizations | Commercial Real Estate Portfolio Segment
Average Recorded Investment	194	454
Interest recognized on impaired loans	$ 0	$ 0