XML 38 R30.htm IDEA: XBRL DOCUMENT
v2.4.0.6

Segment Information (Tables) | 9 Months Ended
--- | ---
Sep. 30, 2012
Segment Reporting [Abstract] |
Revenue from Continuing Operations By Segment |
Revenue by Segment |  | Quarter ended September 30, |  | Nine Months ended September 30,
($ in thousands) |  | 2012 |  | 2011 |  | 2012 |  | 2011
Insurance Operations: |  |  |  |  |  |  |  |  |  |  |  |
Net premiums earned: |  |  |  |  |  |  |  |  |  |  |  |
Commercial automobile |  | $ | 72,758 |  |  | 70,174 |  |  | $ | 214,782 |  |  | 209,042 |
Workers compensation |  | 65,592 |  |  | 63,497 |  |  | 198,064 |  |  | 189,878 |
General liability |  | 93,763 |  |  | 87,479 |  |  | 276,538 |  |  | 255,717 |
Commercial property |  | 52,197 |  |  | 48,051 |  |  | 151,945 |  |  | 144,121 |
Business owners’ policies |  | 17,749 |  |  | 16,663 |  |  | 51,872 |  |  | 49,555 |
Bonds |  | 4,713 |  |  | 4,727 |  |  | 14,076 |  |  | 14,219 |
Other |  | 27,648 |  |  | 1,772 |  |  | 59,619 |  |  | 6,889 |
Total commercial lines |  | 334,420 |  |  | 292,363 |  |  | 966,896 |  |  | 869,421 |
Personal automobile |  | 38,295 |  |  | 37,371 |  |  | 113,648 |  |  | 111,522 |
Homeowners |  | 29,919 |  |  | 25,923 |  |  | 86,685 |  |  | 75,538 |
Other |  | 3,591 |  |  | 3,306 |  |  | 10,037 |  |  | 9,405 |
Total personal lines |  | 71,805 |  |  | 66,600 |  |  | 210,370 |  |  | 196,465 |
Total net premiums earned |  | 406,225 |  |  | 358,963 |  |  | 1,177,266 |  |  | 1,065,886 |
Miscellaneous income |  | 1,009 |  |  | 1,255 |  |  | 6,904 |  |  | 6,413 |
Total Insurance Operations revenues |  | 407,234 |  |  | 360,218 |  |  | 1,184,170 |  |  | 1,072,299 |
Investments: |  |  |  |  |  |  |  |  |  |  |  |
Net investment income |  | 30,650 |  |  | 35,786 |  |  | 97,284 |  |  | 118,604 |
Net realized investment (losses) gains |  | (1,088 | ) |  | (2,045 | ) |  | 3,448 |  |  | 5,861 |
Total investment revenues |  | 29,562 |  |  | 33,741 |  |  | 100,732 |  |  | 124,465 |
Total all segments |  | 436,796 |  |  | 393,959 |  |  | 1,284,902 |  |  | 1,196,764 |
Other income |  | 76 |  |  | 110 |  |  | 225 |  |  | 331 |
Total revenues |  | $ | 436,872 |  |  | 394,069 |  |  | $ | 1,285,127 |  |  | 1,197,095 |
Income From Continuing Operations, Before Federal Income Tax |
Income from Continuing Operations before Federal Income Tax |  | Quarter ended September 30, |  | Nine Months ended September 30,
($ in thousands) |  | 2012 |  | 2011 |  | 2012 |  | 2011
Insurance Operations: |  |  |  |  |  |  |  |  |  |  |  |
Commercial lines underwriting |  | $ | (6,359 | ) |  | (36,512 | ) |  | $ | (30,367 | ) |  | (66,150 | )
Personal lines underwriting |  | 7,220 |  |  | (28,267 | ) |  | 2,903 |  |  | (45,329 | )
Underwriting income (loss), before federal income tax |  | 861 |  |  | (64,779 | ) |  | (27,464 | ) |  | (111,479 | )
GAAP combined ratio |  | 99.8 | % |  | 118.0 | % |  | 102.3 | % |  | 110.5 | %
Statutory combined ratio |  | 98.4 | % |  | 116.4 | % |  | 101.2 | % |  | 109.6 | %
Investments: |  |  |  |  |  |  |  |  |  |  |  |
Net investment income |  | $ | 30,650 |  |  | 35,786 |  |  | $ | 97,284 |  |  | 118,604 |
Net realized investment (losses) gains |  | (1,088 | ) |  | (2,045 | ) |  | 3,448 |  |  | 5,861 |
Total investment income, before federal income tax |  | 29,562 |  |  | 33,741 |  |  | 100,732 |  |  | 124,465 |
Total all segments |  | 30,423 |  |  | (31,038 | ) |  | 73,268 |  |  | 12,986 |
Interest expense |  | (4,725 | ) |  | (4,559 | ) |  | (14,148 | ) |  | (13,675 | )
General corporate and other expenses |  | (5,384 | ) |  | (1,886 | ) |  | (16,307 | ) |  | (10,735 | )
Income (loss) from continuing operations before federal income tax |  | $ | 20,314 |  |  | (37,483 | ) |  | $ | 42,813 |  |  | (11,424 | )

X
- Definition Tabular disclosure of the revenue from continuing operations for each reportable segment, as a single block of text. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss. + References No definition available. + Details
Name: | sigi_ScheduleOfRevenueFromContinuingOperationsBySegmentTableTextBlock
Namespace Prefix: | sigi_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8736-108599 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 25 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8813-108599 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=14024403&loc=d3e13816-109267 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 131 -Paragraph 27, 28 -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. Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8906-108599 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8721-108599 + Details
Name: | us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_SegmentReportingAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration