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Disclosure - Property and Equipment (Schedule of Property and Equipment) (Details) link:presentationLink link:calculationLink link:definitionLink 40502 - Disclosure - Lease Commitments (Rent Expense) (Details) link:presentationLink link:calculationLink link:definitionLink 40503 - Disclosure - Lease Commitments (Future Minimum Payments) (Details) link:presentationLink link:calculationLink link:definitionLink 40702 - Disclosure - Income Taxes (Provision for Income Taxes) (Details) link:presentationLink link:calculationLink link:definitionLink 40704 - Disclosure - Income Taxes (Schedule of Deferred Tax Assets and Liabilities) (Details) link:presentationLink link:calculationLink link:definitionLink 40802 - Disclosure - Acquisition of Business (Allocation of Purchase Price) (Details) link:presentationLink link:calculationLink link:definitionLink 00090 - Statement - Document and Entity Information link:presentationLink link:calculationLink link:definitionLink 00105 - Statement - Consolidated Balance Sheets (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 00305 - Statement - Consolidated Statements of Comprehensive Income (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 00400 - Statement - Consolidated Statements of Shareholders' Equity link:presentationLink link:calculationLink link:definitionLink 10101 - Disclosure - Significant Accounting Policies link:presentationLink link:calculationLink link:definitionLink 10201 - Disclosure - Marketable Securities link:presentationLink link:calculationLink link:definitionLink 10301 - Disclosure - Inventories link:presentationLink link:calculationLink link:definitionLink 10401 - Disclosure - Property and Equipment link:presentationLink link:calculationLink link:definitionLink 10501 - Disclosure - Lease Commitments link:presentationLink link:calculationLink link:definitionLink 10601 - Disclosure - Retirement Plans link:presentationLink link:calculationLink link:definitionLink 10701 - Disclosure - Income Taxes link:presentationLink link:calculationLink link:definitionLink 10801 - Disclosure - Acquisition of Business link:presentationLink link:calculationLink link:definitionLink 10901 - Disclosure - Summary of Quarterly Results link:presentationLink link:calculationLink link:definitionLink 11001 - Disclosure - Fair Value Information link:presentationLink link:calculationLink link:definitionLink 11101 - Disclosure - Contingencies link:presentationLink link:calculationLink link:definitionLink 20101 - Disclosure - Significant Accounting Policies (Policies) link:presentationLink link:calculationLink link:definitionLink 30103 - Disclosure - Significant Accounting Policies (Tables) link:presentationLink link:calculationLink link:definitionLink 30203 - Disclosure - Marketable Securities (Tables) link:presentationLink link:calculationLink link:definitionLink 30303 - Disclosure - Inventories (Tables) link:presentationLink link:calculationLink link:definitionLink 30403 - Disclosure - Property and Equipment (Table) link:presentationLink link:calculationLink link:definitionLink 30503 - 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Disclosure - Retirement Plans (Change in Benefit Obligation) (Details) link:presentationLink link:calculationLink link:definitionLink 40604 - Disclosure - Retirement Plans (Assumptions Used) (Details) link:presentationLink link:calculationLink link:definitionLink 40605 - Disclosure - Retirement Plans (Components of Net Periodic Benefit Cost) (Details) link:presentationLink link:calculationLink link:definitionLink 40606 - Disclosure - Retirement Plans (Estimated future benefit payments) (Details) link:presentationLink link:calculationLink link:definitionLink 40701 - Disclosure - Income Taxes (Narrative) (Details) link:presentationLink link:calculationLink link:definitionLink 40703 - Disclosure - Income Taxes (Reconciliation of Income Taxes) (Details) link:presentationLink link:calculationLink link:definitionLink 40705 - Disclosure - Income Taxes (Schedule of Unrecognized Tax Benefits) (Details) link:presentationLink link:calculationLink link:definitionLink 40801 - Disclosure - Acquisition of Business (Narrative) (Details) link:presentationLink link:calculationLink link:definitionLink 40901 - Disclosure - Summary of Quarterly Financial Data (Unaudited) (Details) link:presentationLink link:calculationLink link:definitionLink