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Earnings Per Share (Tables)

12 Months Ended

Dec. 31, 2014

Earnings Per Share [Abstract]

Details of Basic and Diluted Earnings Per Share (EPS)

The following table sets forth the details of basic and diluted earnings per share (EPS):

		Year ended December 31
In thousands, except per share			2014				2013				2012
Net income		$	69,246			$	67,158			$	59,379
Weighted average common shares outstanding used in basic EPS			43,201				43,158				42,851
Common shares issuable upon exercise of dilutive stock options and PSAs / RSUs			865				1,141				821
Weighted average common shares outstanding and common share equivalents used in diluted EPS			44,066				44,299				43,672
Earnings per share
Basic		$	1.60			$	1.56			$	1.39
Diluted			1.57				1.52				1.36

Number of Potential Common Shares that have been Excluded from Computation of Diluted Earnings Per Share for Indicated Period Due to Their Anti-Dilutive Nature

The following table sets forth the potential common shares outstanding for stock options and restricted stock units that were not included in the computation of diluted EPS for the period indicated, because their effect would be anti-dilutive:

		Year ended December 31
In thousands			2014				2013				2012
Potential common shares			277				7				8

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- Definition

Tabular disclosure of securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented, by antidilutive securities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 260

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

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- Definition

Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 260

-SubTopic 10

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

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