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Earnings Per Share | 6 Months Ended
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Jun. 30, 2012
Earnings Per Share [Abstract] |
Earnings Per Share | Note 9 — Earnings Per Share Basic earnings per common share is calculated by dividing net income attributable to common stockholders by the weighted average number of common shares outstanding for the period. Diluted earnings per common share is calculated by dividing net income attributable to common stockholders, as adjusted for the effect of assumed conversions of convertible notes and preferred stock, by the weighted average number of common shares outstanding combined with potentially dilutive common share equivalents outstanding, if the effect is dilutive. In connection with the sale of the 2008 Notes, the Company entered into a Share Lending Agreement for 3,800,000 shares of the Company’s common stock (see Note 8). At June 30, 2012, there were 3,098,898 Borrowed Shares outstanding. Contractual undertakings of the Borrower have the effect of substantially eliminating the economic dilution that otherwise would result from the issuance of the Borrowed Shares, and all shares outstanding under the Share Lending Agreement are contractually obligated to be returned to the Company. As a result, shares loaned under the Share Lending Agreement are not considered outstanding for the purpose of computing and reporting earnings or loss per share. For the six months ended June 30, 2012 and 2011, the Company’s convertible notes, convertible into 2,439,558 shares and 4,681,491 shares of common stock, respectively, were not considered in the calculation of diluted earnings per common share, as inclusion was anti-dilutive. In addition, for the six months ended June 30, 2012 and 2011, approximately 0.1 million and 1.1 million stock options, respectively, with an exercise price in excess of the average market price of the Company’s common stock were also excluded from the calculation of diluted earnings per common share. Basic and diluted earnings per common share are as follows (in thousands, except per share data):
|  | Three Months Ended June 30, |  |  | Six Months Ended June 30, |
|  | 2012 |  |  | 2011 |  |  | 2012 |  |  | 2011 |
Net income attributable to common stockholders - Basic |  | $ | 13,178 |  |  | $ | 2,126 |  |  | $ | 16,784 |  |  | $ | 7,632 |
Impact of assumed conversions: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest on convertible notes |  |  | 570 |  |  |  | — |  |  |  | — |  |  |  | — |
Dividends on preferred stock |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 140 |
Net income attributable to common stockholders - Diluted |  | $ | 13,748 |  |  | $ | 2,126 |  |  | $ | 16,784 |  |  | $ | 7,772 |
Weighted average common shares outstanding - Basic |  |  | 48,227 |  |  |  | 44,749 |  |  |  | 47,890 |  |  |  | 41,180 |
Assumed conversions: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Incremental common shares from warrants |  |  | 1,657 |  |  |  | 1,900 |  |  |  | 1,678 |  |  |  | 2,724 |
Incremental common shares from stock options |  |  | 983 |  |  |  | 784 |  |  |  | 977 |  |  |  | 743 |
Incremental common shares from convertible preferred stock before conversion |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 876 |
Incremental common shares from restricted stock units |  |  | 73 |  |  |  | — |  |  |  | 41 |  |  |  | — |
Incremental common shares from convertible senior notes |  |  | 3,092 |  |  |  | — |  |  |  | — |  |  |  | — |
Weighted average common shares outstanding - Diluted |  |  | 54,032 |  |  |  | 47,433 |  |  |  | 50,586 |  |  |  | 45,523 |
Basic earnings per common share |  | $ | 0.27 |  |  | $ | 0.05 |  |  | $ | 0.35 |  |  | $ | 0.19 |
Diluted earnings per common share |  | $ | 0.25 |  |  | $ | 0.04 |  |  | $ | 0.33 |  |  | $ | 0.17 |

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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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