v2.4.0.6

Earnings Per Share (Tables) | 9 Months Ended
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Sep. 30, 2012
Earnings Per Share [Abstract] |
Summary of Elements Used in Calculating Basic and Diluted Earnings Per Share | The following table is a summary of the elements used in calculating basic and diluted earnings per share for the three and nine months ended September 30, 2012 and 2011:
| Three Months Ended September 30, |  | Nine Months Ended September 30,
(Amounts in Thousands except per share) | 2012 |  | 2011 |  | 2012 |  | 2011
Basic earnings per share: |  |  |  |  |  |  |
Net income attributable to AmTrust Financial Services, Inc. shareholders | $ | 43,230 |  |  | $ | 37,166 |  |  | $ | 122,674 |  |  | $ | 132,511 |
Less: Net income allocated to participating securities and redeemable non-controlling interest | 206 |  |  | 16 |  |  | 513 |  |  | 80 |
Net income allocated to AmTrust Financial Services, Inc. common shareholders | $ | 43,024 |  |  | $ | 37,150 |  |  | $ | 122,161 |  |  | $ | 132,431 |
Weighted average common shares outstanding – basic | 62,642 |  |  | 61,700 |  |  | 61,156 |  |  | 60,414 |
Less: Weighted average participating shares outstanding | 297 |  |  | 32 |  |  | 255 |  |  | 40 |
Weighted average common shares outstanding - basic | 62,345 |  |  | 61,668 |  |  | 60,901 |  |  | 60,374 |
Net income per AmTrust Financial Services, Inc. common share - basic | $ | 0.69 |  |  | $ | 0.60 |  |  | $ | 2.01 |  |  | $ | 2.19 |
Net income attributable to AmTrust Financial Services, Inc. shareholders | $ | 43,230 |  |  | $ | 37,166 |  |  | $ | 122,674 |  |  | $ | 132,511 |
Less: Net income allocated to participating securities and redeemable non-controlling interest | 206 |  |  | 16 |  |  | 513 |  |  | 80 |
Net income allocated to AmTrust Financial Services, Inc. common shareholders | $ | 43,024 |  |  | $ | 37,150 |  |  | $ | 122,161 |  |  | $ | 132,431 |
Weighted average common shares outstanding – basic | 62,345 |  |  | 61,668 |  |  | 60,901 |  |  | 60,374 |
Plus: Dilutive effect of stock options, other | 2,779 |  |  | 1,984 |  |  | 2,515 |  |  | 1,719 |
Weighted average common shares outstanding – dilutive | 65,124 |  |  | 63,652 |  |  | 63,416 |  |  | 62,093 |
Net income per AmTrust Financial Services, Inc. common shares – diluted | $ | 0.66 |  |  | $ | 0.58 |  |  | $ | 1.93 |  |  | $ | 2.13 |

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations. + References No definition available. + Details
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