Merger With Madison Bancorp, Inc. (Schedule Of Pro Forma Financial Information) (Details) - Madison Bancorp, Inc. [Member] $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2014 USD ($) $ / shares
Business Acquisition [Line Items]
Net interest income	$ 44,598
Noninterest income	8,246
Net income available to common shareholders	$ 10,972
Pro forma earnings per share, adjusted: Basic | $ / shares	$ 1.78
Pro forma earnings per share, adjusted: Diluted | $ / shares	$ 1.74