000 - Document - Document And Entity Information link:calculationLink link:definitionLink link:presentationLink 001 - Statement - Consolidated Statements of Income link:calculationLink link:definitionLink link:presentationLink 002 - Statement - Consolidated Statements of Comprehensive Income link:calculationLink link:definitionLink link:presentationLink 003 - Statement - Consolidated Balance Sheets link:calculationLink link:definitionLink link:presentationLink 004 - Statement - Consolidated Balance Sheets (Parentheticals) link:calculationLink link:definitionLink link:presentationLink 005 - Statement - Consolidated Statements of Cash Flows link:calculationLink link:definitionLink link:presentationLink 006 - Statement - Consolidated Statements of Stockholders' Equity link:calculationLink link:definitionLink link:presentationLink 995550 - Disclosure - Note 1 - Business Description and Summary of Significant Accounting Policies link:calculationLink link:definitionLink link:presentationLink 995551 - Disclosure - Note 2 - Revenue Recognition link:calculationLink link:definitionLink link:presentationLink 995552 - Disclosure - Note 3 - Leases link:calculationLink link:definitionLink link:presentationLink 995553 - Disclosure - Note 4 - Property, Plant and Equipment link:calculationLink link:definitionLink link:presentationLink 995554 - Disclosure - Note 5 - Goodwill and Intangibles link:calculationLink link:definitionLink link:presentationLink 995555 - Disclosure - Note 6 - Long-Term Debt link:calculationLink link:definitionLink link:presentationLink 995556 - Disclosure - Note 7 - Interest Rate Swaps link:calculationLink link:definitionLink link:presentationLink 995557 - Disclosure - Note 8 - Income Taxes link:calculationLink link:definitionLink link:presentationLink 995558 - Disclosure - Note 9 - Incentive and Retirement Plans link:calculationLink link:definitionLink link:presentationLink 995559 - Disclosure - Note 10 - Commitments and Contingencies link:calculationLink link:definitionLink link:presentationLink 995560 - Disclosure - Note 11 - Noncash Activities link:calculationLink link:definitionLink link:presentationLink 995561 - Disclosure - Note 12 - Other Investments link:calculationLink link:definitionLink link:presentationLink 995562 - Disclosure - Note 13 - Deferred Compensation link:calculationLink link:definitionLink link:presentationLink 995563 - Disclosure - Note 14 - Stock Based Compensation link:calculationLink link:definitionLink link:presentationLink 995564 - Disclosure - Note 15 - Segment Information link:calculationLink link:definitionLink link:presentationLink 995565 - Disclosure - Note 16 - Broadband Grants link:calculationLink link:definitionLink link:presentationLink 995566 - Disclosure - Note 17 - Transactions With Equity Method Investments link:calculationLink link:definitionLink link:presentationLink 995567 - Disclosure - Note 18 - Subsequent Events link:calculationLink link:definitionLink link:presentationLink 995568 - Disclosure - Note 1 - Business Description and Summary of Significant Accounting Policies (Tables) link:calculationLink link:definitionLink link:presentationLink 995569 - Disclosure - Note 2 - Revenue Recognition (Tables) link:calculationLink link:definitionLink link:presentationLink 995570 - Disclosure - Note 3 - Leases (Tables) link:calculationLink link:definitionLink link:presentationLink 995571 - Disclosure - Note 4 - Property, Plant and Equipment (Tables) link:calculationLink link:definitionLink link:presentationLink 995572 - Disclosure - Note 5 - Goodwill and Intangibles (Tables) link:calculationLink link:definitionLink link:presentationLink 995573 - Disclosure - Note 6 - Long-Term Debt (Tables) link:calculationLink link:definitionLink link:presentationLink 995574 - Disclosure - Note 7 - Interest Rate Swaps (Tables) link:calculationLink link:definitionLink link:presentationLink 995575 - Disclosure - Note 8 - Income Taxes (Tables) link:calculationLink link:definitionLink link:presentationLink 995576 - Disclosure - Note 9 - Incentive and Retirement Plans (Tables) link:calculationLink link:definitionLink link:presentationLink 995577 - Disclosure - Note 14 - Stock Based Compensation (Tables) link:calculationLink link:definitionLink link:presentationLink 995578 - Disclosure - Note 15 - Segment Information (Tables) link:calculationLink link:definitionLink link:presentationLink 995579 - Disclosure - Note 1 - Business Description and Summary of Significant Accounting Policies (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995580 - Disclosure - Note 1 - Business Description and Summary of Significant Accounting Policies - Schedule of Allowance for Credit Losses (Details) link:calculationLink link:definitionLink link:presentationLink 995581 - Disclosure - Note 1 - Business Description and Summary of Significant Accounting Policies - Schedule of Earnings Per Share (Details) link:calculationLink link:definitionLink link:presentationLink 995582 - Disclosure - Note 1 - Business Description and Summary of Significant Accounting Policies - Schedule of Weighted Average Number of Shares (Details) link:calculationLink link:definitionLink link:presentationLink 995583 - Disclosure - Note 2 - Revenue Recognition (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995584 - Disclosure - Note 2 - Revenue Recognition - Schedule of Disaggregation of Revenue (Details) link:calculationLink link:definitionLink link:presentationLink 995585 - Disclosure - Note 2 - Revenue Recognition - Schedule of Assets and Liabilities for Contracts with Customers (Details) link:calculationLink link:definitionLink link:presentationLink 995586 - Disclosure - Note 3 - Leases (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995587 - Disclosure - Note 3 - Leases - Schedule for Lease Costs (Details) link:calculationLink link:definitionLink link:presentationLink 995588 - Disclosure - Note 3 - Leases - Schedule of Operating Lease Liability Maturity (Details) link:calculationLink link:definitionLink link:presentationLink 995589 - Disclosure - Note 4 - Property, Plant and Equipment (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995590 - Disclosure - Note 4 - Property, Plant and Equipment - Schedule of Property, Plant and Equipment (Details) link:calculationLink link:definitionLink link:presentationLink 995591 - Disclosure - Note 5 - Goodwill and Intangibles (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995592 - Disclosure - Note 5 - Goodwill and Intangibles - Schedule of Finite-Lived Intangible Assets (Details) link:calculationLink link:definitionLink link:presentationLink 995593 - Disclosure - Note 5 - Goodwill and Intangibles - Schedule of Finite-Lived Intangible Assets, Future Amortization Expense (Details) link:calculationLink link:definitionLink link:presentationLink 995594 - Disclosure - Note 6 - Long-Term Debt (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995595 - Disclosure - Note 6 - Long-term Debt - Schedule of Long-Term Debt Instruments (Details) link:calculationLink link:definitionLink link:presentationLink 995596 - Disclosure - Note 6 - Long-term Debt - Schedule of Long-Term Debt Instruments (Details) (Parentheticals) link:calculationLink link:definitionLink link:presentationLink 995597 - Disclosure - Note 6 - Long-term Debt - Schedule of Maturities of Long-Term Debt (Details) link:calculationLink link:definitionLink link:presentationLink 995598 - Disclosure - Note 7 - Interest Rate Swaps (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995599 - Disclosure - Note 7 - Interest Rate Swaps - Schedule of Derivative Instruments (Details) link:calculationLink link:definitionLink link:presentationLink 995600 - Disclosure - Note 8 - Income Taxes (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995601 - Disclosure - Note 8 - Income Taxes - Schedule of Components of Income Tax Expense (Benefit) (Details) link:calculationLink link:definitionLink link:presentationLink 995602 - Disclosure - Note 8 - Income Taxes - Schedule of Effective Income Tax Rate Reconciliation (Details) link:calculationLink link:definitionLink link:presentationLink 995603 - Disclosure - Note 8 - Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Details) link:calculationLink link:definitionLink link:presentationLink 995604 - Disclosure - Note 8 - Income Taxes - Schedule of Income Tax Net of Refunds (Details) link:calculationLink link:definitionLink link:presentationLink 995605 - Disclosure - Note 9 - Incentive and Retirement Plans (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995606 - Disclosure - Note 9 - Incentive and Retirement Plans - Cash-based Awards Issued and Outstanding (Details) link:calculationLink link:definitionLink link:presentationLink 995607 - Disclosure - Note 10 - Commitments and Contingencies (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995608 - Disclosure - Note 11 - Noncash Activities (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995609 - Disclosure - Note 12 - Other Investments (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995610 - Disclosure - Note 14 - Stock Based Compensation (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995611 - Disclosure - Note 14 - Stock Based Compensation - Share-Based Compensation Arrangement by Share-Based Payment Award, Conversion of Restricted Stock Units to Options (Details) link:calculationLink link:definitionLink link:presentationLink 995612 - Disclosure - Note 14 - Stock Based Compensation - Schedule of Share-Based Payment Award, Stock Options, Valuation Assumptions (Details) link:calculationLink link:definitionLink link:presentationLink 995613 - Disclosure - Note 14 - Share Based Compensation - Schedule of Conversion from Restricted Stock Units to Options (Details) link:calculationLink link:definitionLink link:presentationLink 995614 - Disclosure - Note 15 - Segment Information (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995615 - Disclosure - Note 15 - Segment Information - Schedule of Segment Information (Details) link:calculationLink link:definitionLink link:presentationLink 995616 - Disclosure - Note 16 - Broadband Grants (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995617 - Disclosure - Note 17 - Transactions With Equity Method Investments (Details Textual) link:calculationLink link:definitionLink link:presentationLink