Earning Per Common Share (Schedule of Earnings Per Share, Basic and Diluted) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Earnings Per Common Share [Abstract]
Net income	$ 5,362	$ 6,862	$ 9,649	$ 10,511
Weighted average shares	10,284	10,223	10,272	10,210
Denominator for basic earnings per common share	10,284	10,223	10,272	10,210
Employee stock options		6	1	7
Other stock compensation plans	86	80	112	92
Dilutive potential common shares	86	86	113	99
Denominator for diluted earnings per common share - adjusted weighted average shares and assumed conversions	10,370	10,309	10,385	10,309
Basic Earnings Per Share	$ 0.52	$ 0.67	$ 0.94	$ 1.03
Diluted Earnings Per Share	0.52	0.67	0.93	1.02
Common Stock, Dividends, Per Share, Cash Paid	$ 0.04	$ 0.03	$ 0.08	$ 0.06