001 - Statement - Consolidated Summary Of Operations link:presentationLink link:definitionLink link:calculationLink 002 - Statement - Consolidated Balance Sheets link:presentationLink link:definitionLink link:calculationLink 003 - Statement - Consolidated Balance Sheets (Parentheticals) link:presentationLink link:definitionLink link:calculationLink 004 - Statement - Consolidated Statements of Earnings and Comprehensive Earnings link:presentationLink link:definitionLink link:calculationLink 005 - Statement - Consolidated Statements of Earnings and Comprehensive Earnings (Parentheticals) link:presentationLink link:definitionLink link:calculationLink 006 - Statement - Consolidated Statements of Stockholders' Equity link:presentationLink link:definitionLink link:calculationLink 007 - Statement - Consolidated Statements of Cash Flows link:presentationLink link:definitionLink link:calculationLink 008 - Disclosure - Note 1 - Organization and Significant Accounting Policies link:presentationLink link:definitionLink link:calculationLink 009 - Disclosure - Note 2 - Cash and Cash Equivalents link:presentationLink link:definitionLink link:calculationLink 010 - Disclosure - Note 3 - Investments link:presentationLink link:definitionLink link:calculationLink 011 - Disclosure - Note 4 - Land, Buildings, and Equipment link:presentationLink link:definitionLink link:calculationLink 012 - Disclosure - Note 5 - Commitments and Contingencies link:presentationLink link:definitionLink link:calculationLink 013 - Disclosure - Note 6 - Profit-sharing and ESOP Plan link:presentationLink link:definitionLink link:calculationLink 014 - Disclosure - Note 7 - Income Taxes link:presentationLink link:definitionLink link:calculationLink 015 - Disclosure - Note 8 - Stockholders' Equity link:presentationLink link:definitionLink link:calculationLink 016 - Disclosure - Note 9 - Deferred Compensation link:presentationLink link:definitionLink link:calculationLink 017 - Disclosure - Note 10 - Discontinued Operations link:presentationLink link:definitionLink link:calculationLink 018 - Disclosure - Accounting Policies, by Policy (Policies) link:presentationLink link:definitionLink link:calculationLink 019 - Disclosure - Note 1 - Organization and Significant Accounting Policies (Tables) link:presentationLink link:definitionLink link:calculationLink 020 - Disclosure - Note 2 - Cash and Cash Equivalents (Tables) link:presentationLink link:definitionLink link:calculationLink 021 - Disclosure - Note 3 - Investments (Tables) link:presentationLink link:definitionLink link:calculationLink 022 - Disclosure - Note 4 - Land, Buildings, and Equipment (Tables) link:presentationLink link:definitionLink link:calculationLink 023 - Disclosure - Note 5 - Commitments and Contingencies (Tables) link:presentationLink link:definitionLink link:calculationLink 024 - Disclosure - Note 7 - Income Taxes (Tables) link:presentationLink link:definitionLink link:calculationLink 025 - Disclosure - Note 10 - Discontinued Operations (Tables) link:presentationLink link:definitionLink link:calculationLink 026 - Disclosure - Note 1 - Organization and Significant Accounting Policies (Details) link:presentationLink link:definitionLink link:calculationLink 027 - Disclosure - Note 1 - Organization and Significant Accounting Policies (Details) - Depreciation And Amortization Rates link:presentationLink link:definitionLink link:calculationLink 028 - Disclosure - Note 2 - Cash and Cash Equivalents (Details) - Cash And Cash Equivalents link:presentationLink link:definitionLink link:calculationLink 029 - Disclosure - Note 3 - Investments (Details) link:presentationLink link:definitionLink link:calculationLink 030 - Disclosure - Note 3 - Investments (Details) - Summary of Investments link:presentationLink link:definitionLink link:calculationLink 031 - Disclosure - Note 3 - Investments (Details) - Unrealized Losses Equity Securites link:presentationLink link:definitionLink link:calculationLink 032 - Disclosure - Note 3 - Investments (Details) - Telecommunications Stocks Held link:presentationLink link:definitionLink link:calculationLink 033 - Disclosure - Note 3 - Investments (Details) - Fair Value Hierarchy link:presentationLink link:definitionLink link:calculationLink 034 - Disclosure - Note 4 - Land, Buildings, and Equipment (Details) link:presentationLink link:definitionLink link:calculationLink 035 - Disclosure - Note 4 - Land, Buildings, and Equipment (Details) - Land, Buildings And Equipment At Cost link:presentationLink link:definitionLink link:calculationLink 036 - Disclosure - Note 5 - Commitments and Contingencies (Details) link:presentationLink link:definitionLink link:calculationLink 037 - Disclosure - Note 5 - Commitments and Contingencies (Details) - Minimum Lease Commitments link:presentationLink link:definitionLink link:calculationLink 038 - Disclosure - Note 5 - Commitments and Contingencies (Details) - Net Rent Expense link:presentationLink link:definitionLink link:calculationLink 039 - Disclosure - Note 6 - Profit-sharing and ESOP Plan (Details) link:presentationLink link:definitionLink link:calculationLink 040 - Disclosure - Note 7 - Income Taxes (Details) link:presentationLink link:definitionLink link:calculationLink 041 - Disclosure - Note 7 - Income Taxes (Details) - Deferred Tax Asset Components link:presentationLink link:definitionLink link:calculationLink 042 - Disclosure - Note 7 - Income Taxes (Details) - Income Tax Reconciliation link:presentationLink link:definitionLink link:calculationLink 043 - Disclosure - Note 8 - Stockholders' Equity (Details) link:presentationLink link:definitionLink link:calculationLink 044 - Disclosure - Note 9 - Deferred Compensation (Details) link:presentationLink link:definitionLink link:calculationLink 045 - Disclosure - Note 10 - Discontinued Operations (Details) link:presentationLink link:definitionLink link:calculationLink 046 - Disclosure - Note 10 - Discontinued Operations (Details) - Discontinued Operations link:presentationLink link:definitionLink link:calculationLink 000 - Disclosure - Document And Entity Information link:presentationLink link:definitionLink link:calculationLink