Business Combinations - Bay View Funding - Pro Forma Information (Details) - BVF/CSNK - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Pro Forma Information
Net interest income	$ 66,105	$ 59,998
Non interest income	8,293	8,080
Total revenue	74,398	68,078
Net income	$ 15,141	$ 13,397
Net income per share - basic (in dollars per share)	$ 0.47	$ 0.42
Net income per share - diluted (in dollars per share)	$ 0.47	$ 0.42