001 - Statement - Consolidated Balance Sheets link:presentationLink link:definitionLink link:calculationLink 002 - Statement - Consolidated Balance Sheets (Parentheticals) link:presentationLink link:definitionLink link:calculationLink 003 - Statement - Consolidated Statements of Operations link:presentationLink link:definitionLink link:calculationLink 004 - Statement - Consolidated Statements of Comprehensive Income (Loss) link:presentationLink link:definitionLink link:calculationLink 005 - Statement - Consolidated Statements of Shareholders' Equity link:presentationLink link:definitionLink link:calculationLink 006 - Statement - Consolidated Statements of Cash Flows link:presentationLink link:definitionLink link:calculationLink 007 - Disclosure - Note 1 - The Company and Summary of Significant Accounting Policies link:presentationLink link:definitionLink link:calculationLink 008 - Disclosure - Note 2 - Composition of Certain Financial Statement Captions link:presentationLink link:definitionLink link:calculationLink 009 - Disclosure - Note 3 - Retirement and Other Benefit Plans link:presentationLink link:definitionLink link:calculationLink 010 - Disclosure - Note 4 - Income Taxes link:presentationLink link:definitionLink link:calculationLink 011 - Disclosure - Note 5 - Line of Credit link:presentationLink link:definitionLink link:calculationLink 012 - Disclosure - Note 6 - Commitments and Contingencies link:presentationLink link:definitionLink link:calculationLink 013 - Disclosure - Note 7 - Segment Information link:presentationLink link:definitionLink link:calculationLink 014 - Disclosure - Note 8 - Unaudited Interim Financial Information link:presentationLink link:definitionLink link:calculationLink 015 - Disclosure - Accounting Policies, by Policy (Policies) link:presentationLink link:definitionLink link:calculationLink 016 - Disclosure - Note 2 - Composition of Certain Financial Statement Captions (Tables) link:presentationLink link:definitionLink link:calculationLink 017 - Disclosure - Note 3 - Retirement and Other Benefit Plans (Tables) link:presentationLink link:definitionLink link:calculationLink 018 - Disclosure - Note 4 - Income Taxes (Tables) link:presentationLink link:definitionLink link:calculationLink 019 - Disclosure - Note 6 - Commitments and Contingencies (Tables) link:presentationLink link:definitionLink link:calculationLink 020 - Disclosure - Note 7 - Segment Information (Tables) link:presentationLink link:definitionLink link:calculationLink 021 - Disclosure - Note 1 - The Company and Summary of Significant Accounting Policies (Detail) link:presentationLink link:definitionLink link:calculationLink 022 - Disclosure - Note 2 - Composition of Certain Financial Statement Captions (Detail) - Composition of Certain Financial Statement Captions link:presentationLink link:definitionLink link:calculationLink 023 - Disclosure - Note 3 - Retirement and Other Benefit Plans (Detail) link:presentationLink link:definitionLink link:calculationLink 024 - Disclosure - Note 3 - Retirement and Other Benefit Plans (Detail) - Net Pension Cost link:presentationLink link:definitionLink link:calculationLink 025 - Disclosure - Note 3 - Retirement and Other Benefit Plans (Detail) - Net Pension Costs And Benefit Obligations Determined Using Assumptions link:presentationLink link:definitionLink link:calculationLink 026 - Disclosure - Note 3 - Retirement and Other Benefit Plans (Detail) - Benefit Obligation, Plan Assets, and Funded Status of Plans link:presentationLink link:definitionLink link:calculationLink 027 - Disclosure - Note 3 - Retirement and Other Benefit Plans (Detail) - Actual and Target Allocation for Plan Assets link:presentationLink link:definitionLink link:calculationLink 028 - Disclosure - Note 3 - Retirement and Other Benefit Plans (Detail) - Fair Value of Pension Plan Assets link:presentationLink link:definitionLink link:calculationLink 029 - Disclosure - Note 3 - Retirement and Other Benefit Plans (Detail) - Expected Payments for Pension Benefits link:presentationLink link:definitionLink link:calculationLink 030 - Disclosure - Note 3 - Retirement and Other Benefit Plans (Detail) - Expected Payments for Executive Postretirement Benefits link:presentationLink link:definitionLink link:calculationLink 031 - Disclosure - Note 3 - Retirement and Other Benefit Plans (Detail) - Net Periodic Postretirement Healthcare Cost link:presentationLink link:definitionLink link:calculationLink 032 - Disclosure - Note 3 - Retirement and Other Benefit Plans (Detail) - Weighted Average Assumptions link:presentationLink link:definitionLink link:calculationLink 033 - Disclosure - Note 3 - Retirement and Other Benefit Plans (Detail) - Estimated Effect of a 1% Increase in Healthcare Cost Trend Rate link:presentationLink link:definitionLink link:calculationLink 034 - Disclosure - Note 3 - Retirement and Other Benefit Plans (Detail) - Estimated Effect of a 1% Decrease in Healthcare Cost Trend Rate link:presentationLink link:definitionLink link:calculationLink 035 - Disclosure - Note 3 - Retirement and Other Benefit Plans (Detail) - Healthcare Obligation and Funded Status of Plan link:presentationLink link:definitionLink link:calculationLink 036 - Disclosure - Note 3 - Retirement and Other Benefit Plans (Detail) - Expected Payments for Postretirement Benefits link:presentationLink link:definitionLink link:calculationLink 037 - Disclosure - Note 4 - Income Taxes (Detail) link:presentationLink link:definitionLink link:calculationLink 038 - Disclosure - Note 4 - Income Taxes (Detail) - Provision for Taxes on Income link:presentationLink link:definitionLink link:calculationLink 039 - Disclosure - Note 4 - Income Taxes (Detail) - Tax Provision Differs From Applying Statutory Federal Income Tax Rate link:presentationLink link:definitionLink link:calculationLink 040 - Disclosure - Note 4 - Income Taxes (Detail) - Deferred Income Taxes Results From Differences in the Bases of Assets and Liabilities link:presentationLink link:definitionLink link:calculationLink 041 - Disclosure - Note 4 - Income Taxes (Detail) - Reconciliation of Unrecognized Tax Benefits link:presentationLink link:definitionLink link:calculationLink 042 - Disclosure - Note 5 - Line of Credit (Detail) link:presentationLink link:definitionLink link:calculationLink 043 - Disclosure - Note 6 - Commitments and Contingencies (Detail) link:presentationLink link:definitionLink link:calculationLink 044 - Disclosure - Note 6 - Commitments and Contingencies (Detail) - Future minimum lease payments for transportation leases link:presentationLink link:definitionLink link:calculationLink 045 - Disclosure - Note 7 - Segment Information (Detail) link:presentationLink link:definitionLink link:calculationLink 046 - Disclosure - Note 7 - Segment Information (Detail) - Segment Reporting link:presentationLink link:definitionLink link:calculationLink 000 - Disclosure - Document And Entity Information link:presentationLink link:definitionLink link:calculationLink