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Earnings Per Share | 9 Months Ended
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Sep. 30, 2012
Earnings Per Share | 11. Earnings Per Share Basic earnings per share is computed by dividing income available to common stockholders by the weighted average number of shares outstanding for the periods presented. The calculation of diluted earnings per share includes the impact of potentially dilutive non-vested restricted shares outstanding during the periods presented, unless their effect is anti-dilutive. There are no adjustments made to income available to common stockholders in the calculation of diluted earnings per share. The following is a calculation of the basic and diluted weighted-average shares outstanding for the three and nine months ended September 30, 2012 and 2011:
|  | Three Months Ended September 30, |  |  | Nine Months Ended September 30, |
|  | 2012 |  |  | 2011 |  |  | 2012 |  |  | 2011 |
|  | (In thousands) |  |  | (In thousands) |
Basic weighted average common shares outstanding |  |  | 93,199 |  |  |  | 92,060 |  |  |  | 92,502 |  |  |  | 92,052 |
Dilution effect of stock awards at end of period |  |  | 240 |  |  |  | 104 |  |  |  | 182 |  |  |  | 156 |
Diluted weighted average common shares outstanding |  |  | 93,439 |  |  |  | 92,164 |  |  |  | 92,684 |  |  |  | 92,208 |
Anti-dilutive stock-based compensation awards |  |  | 748 |  |  |  | 281 |  |  |  | 541 |  |  |  | 174 |

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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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