Business Combinations (Pro Forma Information) (Details) - Home Federal Bank - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Business Acquisition, Pro Forma Information [Abstract]
Net interest income	$ 79,373	$ 77,932
Non interest expense	89,205	110,454
Net income	$ 11,288	$ 27,308
Net income per diluted share (in dollars per share)	$ 0.16	$ 0.38