XML 32 R121.htm IDEA: XBRL DOCUMENT v2.4.1.9

Parent Corporation Statements of Income (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Revenues:
Dividends Paid to Parent Company									$ (57,500)us-gaap_CashDividendsPaidToParentCompany
Net investment income earned	32,108us-gaap_NetInvestmentIncome	34,292us-gaap_NetInvestmentIncome	36,774us-gaap_NetInvestmentIncome	35,534us-gaap_NetInvestmentIncome	35,313us-gaap_NetInvestmentIncome	32,457us-gaap_NetInvestmentIncome	34,003us-gaap_NetInvestmentIncome	32,870us-gaap_NetInvestmentIncome	138,708us-gaap_NetInvestmentIncome	134,643us-gaap_NetInvestmentIncome	131,877us-gaap_NetInvestmentIncome
Other income									16,945us-gaap_OtherIncome	12,294us-gaap_OtherIncome	9,118us-gaap_OtherIncome
Total revenues									2,034,861us-gaap_Revenues	1,903,741us-gaap_Revenues	1,734,102us-gaap_Revenues
Expenses:
Interest expense									22,086us-gaap_InterestExpenseDebt	22,538us-gaap_InterestExpenseDebt	18,872us-gaap_InterestExpenseDebt
Other expenses									33,673us-gaap_OtherCostAndExpenseOperating	35,686us-gaap_OtherCostAndExpenseOperating	30,462us-gaap_OtherCostAndExpenseOperating
Total expenses									1,837,730us-gaap_BenefitsLossesAndExpenses	1,759,939us-gaap_BenefitsLossesAndExpenses	1,696,467us-gaap_BenefitsLossesAndExpenses
Federal income tax benefit:
Current									28,415us-gaap_CurrentFederalTaxExpenseBenefit	24,147us-gaap_CurrentFederalTaxExpenseBenefit	5,647us-gaap_CurrentFederalTaxExpenseBenefit
Deferred									26,889us-gaap_DeferredFederalIncomeTaxExpenseBenefit	12,240us-gaap_DeferredFederalIncomeTaxExpenseBenefit	(5,975)us-gaap_DeferredFederalIncomeTaxExpenseBenefit
Total federal income tax benefit									55,304us-gaap_IncomeTaxExpenseBenefit	36,387us-gaap_IncomeTaxExpenseBenefit	(328)us-gaap_IncomeTaxExpenseBenefit
Net income from continuing operations	41,350us-gaap_IncomeLossFromContinuingOperations	53,162us-gaap_IncomeLossFromContinuingOperations	29,341us-gaap_IncomeLossFromContinuingOperations	17,974us-gaap_IncomeLossFromContinuingOperations	25,335us-gaap_IncomeLossFromContinuingOperations	32,653us-gaap_IncomeLossFromContinuingOperations	27,122us-gaap_IncomeLossFromContinuingOperations	22,305us-gaap_IncomeLossFromContinuingOperations	141,827us-gaap_IncomeLossFromContinuingOperations	107,415us-gaap_IncomeLossFromContinuingOperations	37,963us-gaap_IncomeLossFromContinuingOperations
Loss on disposal of discontinued operations									0us-gaap_DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax	(997)us-gaap_DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax	0us-gaap_DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax
Net income	41,350us-gaap_NetIncomeLoss	53,162us-gaap_NetIncomeLoss	29,341us-gaap_NetIncomeLoss	17,974us-gaap_NetIncomeLoss	25,335us-gaap_NetIncomeLoss	32,653us-gaap_NetIncomeLoss	27,122us-gaap_NetIncomeLoss	21,308us-gaap_NetIncomeLoss	141,827us-gaap_NetIncomeLoss	106,418us-gaap_NetIncomeLoss	37,963us-gaap_NetIncomeLoss
Parent Company [Member]
Revenues:
Dividends Paid to Parent Company									57,511us-gaap_CashDividendsPaidToParentCompany / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	32,129us-gaap_CashDividendsPaidToParentCompany / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	196,091us-gaap_CashDividendsPaidToParentCompany / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Net investment income earned									620us-gaap_NetInvestmentIncome / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	585us-gaap_NetInvestmentIncome / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	495us-gaap_NetInvestmentIncome / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Other income									342us-gaap_OtherIncome / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	55us-gaap_OtherIncome / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	464us-gaap_OtherIncome / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Total revenues									58,473us-gaap_Revenues / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	32,769us-gaap_Revenues / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	197,050us-gaap_Revenues / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Expenses:
Interest expense									23,840us-gaap_InterestExpenseDebt / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	24,309us-gaap_InterestExpenseDebt / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	20,711us-gaap_InterestExpenseDebt / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Other expenses									24,575us-gaap_OtherCostAndExpenseOperating / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	27,888us-gaap_OtherCostAndExpenseOperating / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	20,632us-gaap_OtherCostAndExpenseOperating / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Total expenses									48,415us-gaap_BenefitsLossesAndExpenses / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	52,197us-gaap_BenefitsLossesAndExpenses / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	41,343us-gaap_BenefitsLossesAndExpenses / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Income (loss) from continuing operations before federal income tax									10,058sigi_IncomeLossFromContinuingOperationsBeforeFederalIncomeTax / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	(19,428)sigi_IncomeLossFromContinuingOperationsBeforeFederalIncomeTax / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	155,707sigi_IncomeLossFromContinuingOperationsBeforeFederalIncomeTax / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Federal income tax benefit:
Current									(15,920)us-gaap_CurrentFederalTaxExpenseBenefit / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	(22,779)us-gaap_CurrentFederalTaxExpenseBenefit / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	(4,602)us-gaap_CurrentFederalTaxExpenseBenefit / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Deferred									(646)us-gaap_DeferredFederalIncomeTaxExpenseBenefit / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	4,835us-gaap_DeferredFederalIncomeTaxExpenseBenefit / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	(9,347)us-gaap_DeferredFederalIncomeTaxExpenseBenefit / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Total federal income tax benefit									(16,566)us-gaap_IncomeTaxExpenseBenefit / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	(17,944)us-gaap_IncomeTaxExpenseBenefit / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	(13,949)us-gaap_IncomeTaxExpenseBenefit / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Net income (loss) from continuing operations before equity in undistributed income of subsidiaries									26,624sigi_NetIncomeLossFromContinuingOperationsBeforeEquityInUndistributedIncomeOfSubsidiaries / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	(1,484)sigi_NetIncomeLossFromContinuingOperationsBeforeEquityInUndistributedIncomeOfSubsidiaries / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	169,656sigi_NetIncomeLossFromContinuingOperationsBeforeEquityInUndistributedIncomeOfSubsidiaries / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Equity In Undistributed Income Of Continuing Subsidiaries Net Of Tax									(115,203)sigi_EquityInUndistributedIncomeOfContinuingSubsidiariesNetOfTax / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	(108,899)sigi_EquityInUndistributedIncomeOfContinuingSubsidiariesNetOfTax / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	0sigi_EquityInUndistributedIncomeOfContinuingSubsidiariesNetOfTax / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Dividends in excess of continuing subsidiaries' current year earnings									0sigi_DividendsInExcessOfContinuingSubsidiariesCurrentYearEarnings / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	0sigi_DividendsInExcessOfContinuingSubsidiariesCurrentYearEarnings / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	(131,693)sigi_DividendsInExcessOfContinuingSubsidiariesCurrentYearEarnings / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Net income from continuing operations									141,827us-gaap_IncomeLossFromContinuingOperations / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	107,415us-gaap_IncomeLossFromContinuingOperations / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	37,963us-gaap_IncomeLossFromContinuingOperations / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Loss on disposal of discontinued operations									0us-gaap_DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	(997)us-gaap_DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	0us-gaap_DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Net income									$ 141,827us-gaap_NetIncomeLoss / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	$ 106,418us-gaap_NetIncomeLoss / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	$ 37,963us-gaap_NetIncomeLoss / dei_LegalEntityAxis = us-gaap_ParentCompanyMember

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