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Organization | 12 Months Ended
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Dec. 31, 2012
Organization [Abstract] |
Organization | Organization Selective Insurance Group, Inc., through its subsidiaries, (collectively referred to as “we,” “us,” or “our”) offers standard and excess and surplus lines (“E&S”) property and casualty insurance products. Selective Insurance Group, Inc. (referred to as the “Parent”) was incorporated in New Jersey in 1977 and its main offices are located in Branchville, New Jersey. The Parent’s common stock is publicly traded on the NASDAQ Global Select Market under the symbol “SIGI.” We have provided a glossary of terms as Exhibit 99.1 to this Form 10-K, which defines certain industry-specific and other terms that are used in this Form 10-K. We classify our business into three operating segments:
• | Our Standard Insurance Operations segment, which is comprised of both commercial lines ("Commercial Lines") and personal lines ("Personal Lines") business, sells property and casualty insurance products and services in the standard market, including flood insurance through the National Flood Insurance Program's ("NFIPs") write-your-own ("WYO") program;
• | Our E&S Insurance Operations segment, which is comprised of Commercial Lines property and casualty insurance products and services that are unavailable in the standard market due to the market conditions or characteristics of the insured that are caused by the insured's claim history or the characteristics of their business; and
• | Our Investments segment, which invests the premiums collected by our Standard and E&S Insurance Operations.
These segments reflect a change from our historical segments of Insurance Operations and Investments. This change resulted from the acquisitions that we made in 2011 related to our E&S business. See Note 12. "Business Combinations" for information regarding these acquisitions. As our E&S segment currently meets the quantitative threshold for separate reporting, our revised segments are reflected throughout this report for all periods presented.

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- Definition The entire disclosure for the nature of an entity's business, the major products or services it sells or provides and its principal markets, including the locations of those markets. If the entity operates in more than one business, the disclosure also indicates the relative importance of its operations in each business and the basis for the determination (for example, assets, revenues, or earnings). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6003-108592 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Statement of Position (SOP) -Number 94-6 -Paragraph 10 -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. + Details
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