Per Share Data (Computations of Basic Earnings Per Share and Diluted Earnings Per Share) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Basic Earnings per Share:
NET INCOME	$ 9,788	$ 7,325	$ 14,934	$ 14,631
Weighted Average Shares Outstanding (in shares)	15,256,019	13,256,026	14,590,437	13,238,836
Basic Earnings per Share (USD per share)	$ 0.64	$ 0.55	$ 1.02	$ 1.11
Diluted Earnings per Share:
NET INCOME	$ 9,788	$ 7,325	$ 14,934	$ 14,631
Weighted Average Shares Outstanding (in shares)	15,256,019	13,256,026	14,590,437	13,238,836
Potentially Dilutive Shares, Net (in shares)	1,200	7,578	2,639	7,523
Diluted Weighted Average Shares Outstanding (in shares)	15,257,219	13,263,604	14,593,076	13,246,359
Diluted Earnings per Share (USD per share)	$ 0.64	$ 0.55	$ 1.02	$ 1.10