Earnings Per Comon Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands		3 Months Ended				9 Months Ended
		Sep. 30, 2015		Sep. 30, 2014		Sep. 30, 2015		Sep. 30, 2014
Earnings Per Share [Abstract]
Net Income		$ 5,933		$ 6,147		$ 18,093		$ 16,991
Basic, in shares		(12,888)	[1]	(12,858)	[2]	12,886	[1]	(12,853)	[2]
Basic Earnings, in dollars per share		$ 0.46	[1]	$ 0.48	[2]	$ 1.40	[1]	$ 1.32	[2]
Dilutive Average Shares Attributable to Stock Options, in shares		41	[1]	16		40		12
Diluted, in shares	[2]	12,929	[1]	12,874	[3]	12,926	[1]	12,865	[3]
Diluted Earnings, in dollars per share		$ 0.46	[1]	$ 0.48	[2]	$ 1.40	[1]	$ 1.32	[2]
Antidilutive Securities Excluded from the Calculation of Earnings Per Share, in shares		0	[1]	0	[3]	0	[1]	0	[3]

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[2] Share and Per Share Amounts have been restated for the September 2015 2% stock dividend.

[3] All share and per share amounts have been adjusted for the September 2015 2% stock dividend