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Income Per Common Share | 6 Months Ended
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Jun. 30, 2012
Income Per Common Share [Abstract] |
Income Per Common Share | Note 2: Income Per Common Share The following table sets forth the computation of basic and diluted net income per common share: (Dollars in Thousands, Except Per Share Amounts)
|  | Six Months Ended June 30, |  |  | Three Months Ended June 30, |
| 2012 |  |  | 2011 |  |  | 2012 |  |  | 2011 |
Numerator: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income |  | $ | 40,336 |  |  | $ | 49,548 |  |  | $ | 26,033 |  |  | $ | 28,645 |
Dividends on Series B Preferred |  |  | (240 | ) |  |  | (240 | ) |  |  | — |  |  |  | — |
Dividends on Series D Preferred |  |  | (60 | ) |  |  | (60 | ) |  |  | — |  |  |  | — |
Dividends on Noncumulative Preferred |  |  | — |  |  |  | (5 | ) |  |  | — |  |  |  | — |
Total dividends on preferred stocks |  |  | (300 | ) |  |  | (305 | ) |  |  | — |  |  |  | — |
Numerator for basic net income per common share — net income applicable to common stock |  |  | 40,036 |  |  |  | 49,243 |  |  |  | 26,033 |  |  |  | 28,645 |
Dividends on preferred stocks assumed to be converted, if dilutive |  |  | 300 |  |  |  | 305 |  |  |  | — |  |  |  | — |
Interest expense including amortization of debt issuance costs, net of income taxes, on convertible debt assumed to be converted, if dilutive |  |  | — |  |  |  | 290 |  |  |  | — |  |  |  | 25 |
Numerator for diluted net income per common share |  | $ | 40,336 |  |  | $ | 49,838 |  |  | $ | 26,033 |  |  | $ | 28,670 |
Denominator: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Denominator for basic net income per common share — weighted-average shares |  |  | 22,332,303 |  |  |  | 21,656,508 |  |  |  | 22,340,826 |  |  |  | 22,133,217 |
Effective of dilutive securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Convertible preferred stocks |  |  | 917,346 |  |  |  | 935,626 |  |  |  | 916,666 |  |  |  | 935,626 |
Stock options |  |  | 266,776 |  |  |  | 359,158 |  |  |  | 251,838 |  |  |  | 362,634 |
Convertible notes payable |  |  | — |  |  |  | 534,146 |  |  |  | — |  |  |  | 95,000 |
Dilutive potential common shares |  |  | 1,184,122 |  |  |  | 1,828,930 |  |  |  | 1,168,504 |  |  |  | 1,393,260 |
Denominator for diluted net income per common share — adjusted weighted-average shares and assumed conversions |  |  | 23,516,425 |  |  |  | 23,485,438 |  |  |  | 23,509,330 |  |  |  | 23,526,477 |
Basic net income per common share |  | $ | 1.79 |  |  | $ | 2.27 |  |  | $ | 1.17 |  |  | $ | 1.29 |
Diluted net income per common share |  | $ | 1.72 |  |  | $ | 2.12 |  |  | $ | 1.11 |  |  | $ | 1.22 |
The following weighted-average shares of securities were not included in the computation of diluted net income per common share as their effect would have been antidilutive:
|  | Six Months Ended June 30, |  |  | Three Months Ended June 30, |
| 2012 |  |  | 2011 |  |  | 2012 |  |  | 2011 |
Stock options |  |  | 254,000 |  |  |  | — |  |  |  | 254,000 |  |  |  | — |

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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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