0000001 - Document - Document and Entity Information link:presentationLink link:calculationLink link:definitionLink 9952151 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS link:presentationLink link:calculationLink link:definitionLink 9952152 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 9952153 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF EARNINGS link:presentationLink link:calculationLink link:definitionLink 9952154 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE EARNINGS link:presentationLink link:calculationLink link:definitionLink 9952155 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE EARNINGS (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 9952156 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS link:presentationLink link:calculationLink link:definitionLink 9952156 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS link:presentationLink link:calculationLink link:definitionLink 9952157 - Statement - CONDENSED CONSOLIDATED STATEMENT OF STOCKHOLDERS EQUITY CONDENSED CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY link:presentationLink link:calculationLink link:definitionLink 9952158 - Statement - Condensed Consolidated Statements of Stockholders' Equity (Parenthetical) (Parentheticals) link:presentationLink link:calculationLink link:definitionLink 9952159 - Disclosure - Basis of Presentation (Notes) link:presentationLink link:calculationLink link:definitionLink 9952160 - Disclosure - Fair Value of Financial Instruments (Notes) link:presentationLink link:calculationLink link:definitionLink 9952161 - Disclosure - Investments (Notes) link:presentationLink link:calculationLink link:definitionLink 9952162 - Disclosure - Retirement Plan (Notes) link:presentationLink link:calculationLink link:definitionLink 9952163 - Disclosure - Accumulated Other Comprehensive Earnings (Losses) (Notes) link:presentationLink link:calculationLink link:definitionLink 9952164 - Disclosure - Subsequent Event (Notes) link:presentationLink link:calculationLink link:definitionLink 9952165 - Disclosure - Change in Accounting Principle (Notes) link:presentationLink link:calculationLink link:definitionLink 9954471 - Disclosure - Basis of Presentation (Policies) link:presentationLink link:calculationLink link:definitionLink 9954472 - Disclosure - Fair Value of Financial Instruments (Tables) link:presentationLink link:calculationLink link:definitionLink 9954473 - Disclosure - Investments (Tables) link:presentationLink link:calculationLink link:definitionLink 9954474 - Disclosure - Accumulated Other Comprehensive Earnings (Losses) (Tables) link:presentationLink link:calculationLink link:definitionLink 9954475 - Disclosure - Change in Accounting Principle (Tables) link:presentationLink link:calculationLink link:definitionLink 9954476 - Disclosure - Basis of Presentation (Details) link:presentationLink link:calculationLink link:definitionLink 9954477 - Disclosure - Fair Value Measurements for Investments (Details) link:presentationLink link:calculationLink link:definitionLink 9954478 - Disclosure - Available for Sale Debt Securities Reconciliation (Details) link:presentationLink link:calculationLink link:definitionLink 9954479 - Disclosure - Amortized Cost and Fair Value of Available for Sale Securities by Expected Maturity (Details) link:presentationLink link:calculationLink link:definitionLink 9954480 - Disclosure - Investments Allowance for Credit Losses (Details) link:presentationLink link:calculationLink link:definitionLink 9954481 - Disclosure - Temporarily Impaired Available for Sale Debt Securities by Time Period Impaired (Details) link:presentationLink link:calculationLink link:definitionLink 9954482 - Disclosure - Investments - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9954483 - Disclosure - Investments Equity Securities (Details) link:presentationLink link:calculationLink link:definitionLink 9954484 - Disclosure - Investment Income (Details) link:presentationLink link:calculationLink link:definitionLink 9954485 - Disclosure - Retirement Plan - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9954486 - Disclosure - Accumulated Other Comprehensive Earnings (Losses) (Details) link:presentationLink link:calculationLink link:definitionLink 9954487 - Disclosure - Subsequent Event (Details) link:presentationLink link:calculationLink link:definitionLink 9954488 - Disclosure - Change in Accounting Principle (Details) link:presentationLink link:calculationLink link:definitionLink