Business Combinations Pro Forma Information (Details) - Prime Pacific Financial Services - USD ($) $ / shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Business Acquisition [Line Items]
Net interest income	$ 24,379	$ 21,775	$ 71,547	$ 62,815
Non-interest expense	24,243	20,487	73,843	63,742
Net income	$ 5,151	$ 5,314	$ 12,846	$ 13,704
Net income per diluted share (usd per share)	$ 0	$ 0	$ 0	$ 0