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Earnings Per Share | 3 Months Ended
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Mar. 31, 2013
Earnings Per Share [Abstract] |
EARNINGS PER SHARE |
4. | EARNINGS PER SHARE
The following table sets forth the details of basic and diluted earnings per share (EPS):
|  | Three months ended March 31 |
In thousands, except per share |  | 2013 |  |  | 2012 |
Net income |  | $ | 15,629 |  |  | $ | 18,878 |
Weighted average common shares outstanding used in basic EPS |  |  | 42,966 |  |  |  | 42,751 |
Common shares issuable upon exercise of dilutive stock options and PSAs / RSUs |  |  | 955 |  |  |  | 716 |
Weighted average common shares outstanding and common share equivalents used in diluted EPS |  |  | 43,921 |  |  |  | 43,467 |
Earnings per share |  |  |  |  |  |  |  |
Basic |  | $ | 0.36 |  |  | $ | 0.44 |
Diluted |  |  | 0.36 |  |  |  | 0.43 |
The following table sets forth 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:
|  | March 31 |
In thousands |  | 2013 |  |  | 2012 |
Potential common shares |  |  | — |  |  |  | 589 |

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1252-109256 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 55 -Paragraph 52 -URI http://asc.fasb.org/extlink&oid=16381557&loc=d3e4984-109258 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1278-109256 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 40 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.21) -URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688 + Details
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