Business Combinations (Unaudited Pro Forma Information) (Details) (Home Federal Bank [Member], USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Home Federal Bank [Member]
Business Acquisition [Line Items]
Net interest income	$ 19,907	$ 22,646	$ 41,586	$ 44,641
Non-interest expense	45,603	35,445	68,727	59,029
Net income	$ (15,775)	$ 41,479	$ (14,206)	$ 43,777
Net income per diluted share	$ (0.22)	$ 0.58	$ (0.20)	$ 0.61