Earnings Per Share (tables)

3 Months Ended

Mar. 31, 2014

Earnings Per Share [Abstract]

EPS Calculation Table Text Block

	Three Months Ended
	March 31,
In thousands, except per share data	2014		2013
Net income	$	37,884	$	37,639
Average common shares outstanding - basic	27,094		26,929
Additional shares for stock-based compensation plans outstanding	32		44
Average common shares outstanding - diluted	27,126		26,973
Earnings per share of common stock - basic	$	1.40	$	1.40
Earnings per share of common stock - diluted	$	1.40	$	1.40
Additional information:
Antidilutive shares excluded from net income per diluted common share calculation	44		32