Earnings Per Share (tables)

12 Months Ended

Dec. 31, 2012

Earnings Per Share [Abstract]

EPS Calculation [Table Text Block]

In thousands, except per share data	2012		2011		2010
Net income	$	59,855	$	63,898	$	72,667
Average common shares outstanding - basic	26,831		26,687		26,589
Additional shares for stock-based compensation plans (See Note 6)	76		57		68
Average common shares outstanding - diluted	26,907		26,744		26,657
Earnings per share of common stock - basic	$	2.23	$	2.39	$	2.73
Earnings per share of common stock - diluted	$	2.22	$	2.39	$	2.73
Additional information:
Antidilutive shares not included in net income per diluted common share calculation	1		2		1