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Statement - Condensed Consolidated Balance Sheets link:presentationLink link:calculationLink link:definitionLink 1001501 - Statement - Condensed Consolidated Balance Sheets (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 1005000 - Statement - Condensed Consolidated Statements of Cash Flows link:presentationLink link:calculationLink link:definitionLink 1003000 - Statement - Condensed Consolidated Statements of Comprehensive Income link:presentationLink link:calculationLink link:definitionLink 1003001 - Statement - Condensed Consolidated Statements of Comprehensive Income (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 1002000 - Statement - Condensed Consolidated Statements of Income link:presentationLink link:calculationLink link:definitionLink 1004000 - Statement - Condensed Consolidated Statements of Shareholders' Equity link:presentationLink link:calculationLink link:definitionLink 2106100 - Disclosure - Deferred Acquisition Costs link:presentationLink link:calculationLink link:definitionLink 2406402 - 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Disclosure - Life Policy and Investment Contract Reserves (Tables) link:presentationLink link:calculationLink link:definitionLink 2111100 - Disclosure - Net Income Per Common Share link:presentationLink link:calculationLink link:definitionLink 2411402 - Disclosure - Net Income Per Common Share - Calculations for Basic and Diluted Earnings Per Share (Detail) link:presentationLink link:calculationLink link:definitionLink 2311301 - Disclosure - Net Income Per Common Share (Tables) link:presentationLink link:calculationLink link:definitionLink 2104100 - Disclosure - Property Casualty Loss and Loss Expenses link:presentationLink link:calculationLink link:definitionLink 2404403 - Disclosure - Property Casualty Loss and Loss Expenses - Additional Information (Detail) link:presentationLink link:calculationLink link:definitionLink 2404402 - Disclosure - Property Casualty Loss and Loss Expenses - Consolidated Property Casualty Loss and Loss Expense Reserves (Detail) link:presentationLink link:calculationLink link:definitionLink 2304301 - 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Disclosure - Segment Information - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 2314301 - Disclosure - Segment Information (Tables) link:presentationLink link:calculationLink link:definitionLink 2115100 - Disclosure - Subsequent Events link:presentationLink link:calculationLink link:definitionLink 2415401 - Disclosure - Subsequent Events (Details) link:presentationLink link:calculationLink link:definitionLink