Earning Per Common Share (Schedule of Earnings Per Share, Basic and Diluted) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Earnings Per Common Share [Abstract]
Income from continuing operations	$ 8,464	$ 9,351	$ 8,122	$ 16,250
(Loss) income from discontinued operations	(239)	389	1,402	541
Net income	$ 8,225	$ 9,740	$ 9,524	$ 16,791
Weighted average shares	10,141	10,185	10,117	10,257
Denominator for basic earnings per common share	10,141	10,185	10,117	10,257
Employee stock options	15	26	16	31
Other stock compensation plans	50	83	78	78
Dilutive potential common shares	65	109	94	109
Denominator for diluted earnings per common share - adjusted weighted average shares and assumed conversions	10,206	10,294	10,211	10,366
From continuing operations	$ 0.83	$ 0.92	$ 0.80	$ 1.58
From discontinued operations	$ (0.02)	$ 0.04	$ 0.14	$ 0.05
Basic Earnings Per Share	$ 0.81	$ 0.96	$ 0.94	$ 1.64
From continuing operations	$ 0.83	$ 0.91	$ 0.80	$ 1.57
From discontinued operations	$ (0.02)	$ 0.04	$ 0.14	$ 0.05
Diluted Earnings Per Share	$ 0.81	$ 0.95	$ 0.93	$ 1.62
Dividends paid per common share	$ 0.025	$ 0.025	$ 0.075	$ 0.075