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Consolidated Statements Of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2012 | Sep. 30, 2011 | Sep. 30, 2012 | Sep. 30, 2011
Revenues: |  |  |  |  |
Net premiums earned | $ 646,084 | $ 643,626 |  | $ 1,919,143 | $ 1,924,444
Net investment income | 33,410 | 35,526 |  | 96,569 | 106,631
Net realized investment gains (losses) | 49,752 | (66,919) |  | 78,656 | (14,465)
Other | 2,532 | 3,508 |  | 7,790 | 11,221
Total revenues | 731,778 | 615,741 |  | 2,102,158 | 2,027,831
Expenses: |  |  |  |  |
Losses and loss adjustment expenses | 467,929 | 458,530 |  | 1,415,096 | 1,356,329
Policy acquisition costs | 121,906 | 121,016 |  | 357,062 | 365,649
Other operating expenses | 50,225 | 53,027 |  | 154,353 | 166,797
Interest | 388 | 1,286 |  | 1,176 | 4,650
Total expenses | 640,448 | 633,859 |  | 1,927,687 | 1,893,425
Income (loss) before income taxes | 91,330 | (18,118) |  | 174,471 | 134,406
Income tax expense (benefit) | 25,129 | (14,336) |  | 40,178 | 22,711
Net income (loss) | $ 66,201 | $ (3,782) |  | $ 134,293 | $ 111,695
Net income (loss) per share: |  |  |  |  |
Basic (in dollars per share) | $ 1.21 | $ (0.07) |  | $ 2.45 | $ 2.04
Diluted (in dollars per share) | $ 1.21 | $ (0.07) | [1] | $ 2.45 | $ 2.04
Weighted average shares outstanding: |  |  |  |  |
Basic (in shares) | 54,911 | 54,826 |  | 54,895 | 54,818
Diluted (in shares) | 54,925 | 54,826 | [1] | 54,918 | 54,835
Dividends paid per share (in dollars per share) | $ 0.61 | $ 0.6 |  | $ 1.83 | $ 1.80
[1] | The dilutive impact of incremental shares for 2011 is excluded from loss position in accordance with U.S. generally accepted accounting principles (“GAAP”).

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- Definition The total amount of expense recognized during the period for future policy benefits, claims and claims adjustment costs, and for selling, general and administrative costs. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04.5,6,7) -URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 5, 6, 7 -Article 7 + Details
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