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Property And Liability Insurance Earned Premiums | 12 Months Ended
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Dec. 31, 2011
Property And Liability Insurance Earned Premiums [Abstract] |
Property And Liability Insurance Earned Premiums | MERCURY GENERAL CORPORATION AND SUBSIDIARIES REINSURANCE THREE YEARS ENDED DECEMBER 31, Property and Liability Insurance Earned Premiums
|  | 2011 |  |  | 2010 |  |  | 2009 |
|  | (Amounts in thousands) |
Direct amounts |  | $ | 2,569,661 |  |  | $ | 2,569,942 |  |  | $ | 2,628,507 |
Ceded to other companies |  |  | (4,134 | ) |  |  | (4,468 | ) |  |  | (4,214 | )
Assumed |  |  | 530 |  |  |  | 1,211 |  |  |  | 840 |
Net amounts |  | $ | 2,566,057 |  |  | $ | 2,566,685 |  |  | $ | 2,625,133 |

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- Definition The entire disclosure for the supplemental schedule of information for an entity who has a consolidated property-casualty insurance underwriter, unconsolidated property-casualty subsidiary or fifty percent-or-less owned property-casualty equity investee. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 18 -Article 12 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 235 -Section S99 -Paragraph 3 -Subparagraph (SX 210.12-18) -URI http://asc.fasb.org/extlink&oid=6588446&loc=d3e575016-122915 + Details
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