Earnings Per Share: Schedule of Earnings Per Share Reconciliation (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Earnings Per Share [Abstract]
Net income	$ 3,304	$ 3,102	$ 5,249	$ 9,944
Less: Earnings allocated to participating securities	5	7	8	23
Earnings allocated to common shareholders	$ 3,299	$ 3,095	$ 5,241	$ 9,921
Basic weighted average common shares outstanding	9,952,419	10,271,432	10,034,895	10,241,297
Dilutive stock options	91,000	125,578	90,372	125,140
Dilutive restricted stock grants	2,936	8,939	6,840	6,037
Diluted weighted average common shares outstanding	10,046,355	10,405,949	10,132,107	10,372,474
Basic earnings (loss) per share (in dollars per share)	$ 0.33	$ 0.30	$ 0.52	$ 0.97
Diluted earnings (loss) per share (in dollars per share)	$ 0.33	$ 0.30	$ 0.52	$ 0.96