Per Share Data (Computations of Basic Earnings Per Share and Diluted Earnings Per Share) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Basic Earnings per Share:
NET INCOME	$ 10,185	$ 7,721	$ 25,119	$ 22,352
Weighted Average Shares Outstanding (in shares)	15,257,814	13,265,893	14,814,520	13,247,954
Basic Earnings per Share (USD per share)	$ 0.67	$ 0.58	$ 1.70	$ 1.69
Diluted Earnings per Share:
NET INCOME	$ 10,185	$ 7,721	$ 25,119	$ 22,352
Weighted Average Shares Outstanding (in shares)	15,257,814	13,265,893	14,814,520	13,247,954
Potentially Dilutive Shares, Net (in shares)	0	7,617	1,759	7,556
Diluted Weighted Average Shares Outstanding (in shares)	15,257,814	13,273,510	14,816,279	13,255,510
Diluted Earnings per Share (USD per share)	$ 0.67	$ 0.58	$ 1.70	$ 1.69