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Consolidated Statements Of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2009
Revenues: |  |  |
Net premiums earned | $ 2,566,057 | $ 2,566,685 | $ 2,625,133
Net investment income | 140,947 | 143,814 | 144,949
Net realized investment gains | 58,397 | 57,089 | 346,444
Other | 11,884 | 8,297 | 4,967
Total revenues | 2,777,285 | 2,775,885 | 3,121,493
Expenses: |  |  |
Losses and loss adjustment expenses | 1,829,205 | 1,825,766 | 1,782,233
Policy acquisition costs | 481,721 | 505,565 | 543,307
Other operating expenses | 215,711 | 255,358 | 217,683
Interest | 5,549 | 6,806 | 6,729
Total expenses | 2,532,186 | 2,593,495 | 2,549,952
Income before income taxes | 245,099 | 182,390 | 571,541
Income tax expense | 53,935 | 30,192 | 168,469
Net income | $ 191,164 | $ 152,198 | $ 403,072
Net income per share: |  |  |
Basic | $ 3.49 | $ 2.78 | $ 7.36
Diluted | $ 3.49 | $ 2.78 | $ 7.32

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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 SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 5, 6, 7 -Article 7 Reference 2: 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 + Details
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