Earnings Per Comon Share (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 Share [Abstract]
Net Income		$ 6,305	$ 5,524		$ 12,160	$ 10,844
Basic, in shares		12,633	12,595	[1]	12,633	12,599	[1]
Basic Earnings, in dollars per share		$ 0.50	$ 0.44	[1]	$ 0.96	$ 0.86	[1]
Dilutive Average Shares Attributable to Stock Options, in shares		36	21	[2]	37	22
Diluted, in shares	[1]	12,669	12,616	[2]	12,670	12,621	[2]
Diluted Earnings, in dollars per share		$ 0.50	$ 0.44	[1]	$ 0.96	$ 0.86	[1]
Antidilutive Securities Excluded from the Calculation of Earnings Per Share, in shares		0	33	[2]	0	33	[2]

[1] Share and Per Share Amounts have been restated for the September 2014 2% stock dividend.

[2] All share and per share amounts have been adjusted for the September 2014 2% stock dividend