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