Earnings Per Comon Share (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2014		Jun. 30, 2013		Jun. 30, 2014		Jun. 30, 2013
Earnings Per Share [Abstract]
Net Income	$ 5,524		$ 5,207		$ 10,844		$ 10,388
Basic, in shares	12,348	[1]	12,261	[1]	12,351	[1]	12,267	[1]
Basic Earnings, in dollars per share	$ 0.45	[1]	$ 0.42	[1]	$ 0.88	[1]	$ 0.85	[1]
Dilutive Average Shares Attributable to Stock Options, in shares	21	[2]	18	[2]	22	[1]
Diluted, in shares	12,369	[1],[2]	12,279	[1],[2]	12,373	[1]	12,285	[1],[2]
Diluted Earnings, in dollars per share	$ 0.45	[1]	$ 0.42	[1]	$ 0.88	[1]	$ 0.85	[1]
Antidilutive Securities Excluded from the Calculation of Earnings Per Share, in shares	33	[2]	124	[2]	0	[1]	126	[2]

[1] Share and Per Share Amounts have been restated for the September 2013 2% stock dividend.

[2] All share and per share amounts have been adjusted for the September 2013 2% stock dividend