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Earnings Per Share | 6 Months Ended
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Jun. 30, 2012
Earnings Per Share [Abstract] |
Earnings Per Share | Earnings Per Share Basic and diluted earnings per share were calculated as follows, for each period presented:
| Quarter Ended |  | Six Months Ended
| June 30, |  | June 30,
| 2012 |  | 2011 |  | 2012 |  | 2011
Numerator: |  |  |  |  |  |  |
Net income | $ | 21.0 |  |  | $ | 4.1 |  |  | $ | 47.5 |  |  | $ | 14.9 |
Denominator — Weighted-average common shares outstanding (in thousands)1: |  |  |  |  |  |  |
Basic | 19,137 |  |  | 18,984 |  |  | 19,087 |  |  | 18,962 |
Diluted | 19,200 |  |  | 19,176 |  |  | 19,170 |  |  | 19,164 |
Earnings per common share, Basic: |  |  |  |  |  |  |
Net income per share | $ | 1.10 |  |  | $ | 0.22 |  |  | $ | 2.49 |  |  | $ | 0.79 |
Earnings per common share, Diluted: |  |  |  |  |  |  |
Net income per share | $ | 1.09 |  |  | $ | 0.21 |  |  | $ | 2.48 |  |  | $ | 0.78 |
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1 | The basic weighted-average number of common shares outstanding during the period excludes unvested share-based payment awards. The diluted weighted-average number of common shares outstanding during the period is calculated using the treasury method.
Options to purchase 20,791 common shares at an average exercise price of $80.01 per share were outstanding at both June 30, 2012 and December 31, 2011. The potential dilutive effect of such shares was zero for each of the periods presented. Warrants relating to approximately 3.6 million common shares at an average exercise price of approximately $61.32 per share remained outstanding through June 30, 2012. The potential dilutive effect of shares underlying the Warrants was zero for both earnings per share calculations presented above. During the six months ended June 30, 2012 and June 30, 2011, the Company paid approximately $9.8 ($0.50 per common share) and $9.4 ($0.48 per common share), respectively, in cash dividends to stockholders, including the holders of restricted stock, and dividend equivalents to the holders of restricted stock units and to the holders of performance shares with respect to approximately one half of the performance shares.

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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=6920599&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=6945512&loc=d3e4984-109258 Reference 3: 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 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=6920599&loc=d3e1278-109256 Reference 5: 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 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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