101 - Document - Document and Entity Information link:calculationLink link:presentationLink link:definitionLink 103 - Statement - Consolidated Balance Sheets link:calculationLink link:presentationLink link:definitionLink 104 - Statement - Consolidated Balance Sheets (Parenthetical) link:calculationLink link:presentationLink link:definitionLink 105 - Statement - Consolidated Statements of Income link:calculationLink link:presentationLink link:definitionLink 106 - Statement - Consolidated Statements of Comprehensive Income link:calculationLink link:presentationLink link:definitionLink 107 - Statement - Consolidated Statements of Comprehensive Income (Parenthetical) link:calculationLink link:presentationLink link:definitionLink 108 - Statement - Consolidated Statements of Cash Flows link:calculationLink link:presentationLink link:definitionLink 109 - Statement - Consolidated Statements of Changes in Equity link:calculationLink link:presentationLink link:definitionLink 110 - Statement - Consolidated Statements of Changes in Equity (Parenthetical) link:calculationLink link:presentationLink link:definitionLink 111 - Disclosure - Significant Accounting Policies link:calculationLink link:presentationLink link:definitionLink 112 - Disclosure - Discontinued Operations link:calculationLink link:presentationLink link:definitionLink 113 - Disclosure - Other Comprehensive Income link:calculationLink link:presentationLink link:definitionLink 114 - Disclosure - Investments link:calculationLink link:presentationLink link:definitionLink 115 - Disclosure - Income Taxes link:calculationLink link:presentationLink link:definitionLink 116 - Disclosure - Operating Property link:calculationLink link:presentationLink link:definitionLink 117 - Disclosure - Retirement Plan link:calculationLink link:presentationLink link:definitionLink 118 - Disclosure - Debt link:calculationLink link:presentationLink link:definitionLink 119 - Disclosure - Leases link:calculationLink link:presentationLink link:definitionLink 120 - Disclosure - Share-Based Payment Arrangements link:calculationLink link:presentationLink link:definitionLink 121 - Disclosure - Equity link:calculationLink link:presentationLink link:definitionLink 122 - Disclosure - Commitments and Contingencies link:calculationLink link:presentationLink link:definitionLink 123 - Disclosure - Segment Information link:calculationLink link:presentationLink link:definitionLink 124 - Disclosure - Quarterly Financial Data link:calculationLink link:presentationLink link:definitionLink 125 - Disclosure - Significant Accounting Policies (Policies) link:calculationLink link:presentationLink link:definitionLink 126 - Disclosure - Significant Accounting Policies (Tables) link:calculationLink link:presentationLink link:definitionLink 127 - Disclosure - Discontinued Operations (Tables) link:calculationLink link:presentationLink link:definitionLink 128 - Disclosure - Other Comprehensive Income (Tables) link:calculationLink link:presentationLink link:definitionLink 129 - Disclosure - Investments (Tables) link:calculationLink link:presentationLink link:definitionLink 130 - Disclosure - Income Taxes (Tables) link:calculationLink link:presentationLink link:definitionLink 131 - Disclosure - Operating Property (Tables) link:calculationLink link:presentationLink link:definitionLink 132 - Disclosure - Debt (Tables) link:calculationLink link:presentationLink link:definitionLink 133 - Disclosure - Leases (Tables) link:calculationLink link:presentationLink link:definitionLink 134 - Disclosure - Share-Based Payment Arrangements (Tables) link:calculationLink link:presentationLink link:definitionLink 135 - Disclosure - Segment Information (Tables) link:calculationLink link:presentationLink link:definitionLink 136 - Disclosure - Quarterly Financial Data (Tables) link:calculationLink link:presentationLink link:definitionLink 137 - Disclosure - Significant Accounting Policies - Additional Information (Detail) link:calculationLink link:presentationLink link:definitionLink 138 - Disclosure - Summary of Activity in Allowance for Doubtful Accounts (Detail) link:calculationLink link:presentationLink link:definitionLink 139 - Disclosure - Reconciliation of Average Number of Common Shares and Common Share Equivalents Outstanding (Detail) link:calculationLink link:presentationLink link:definitionLink 140 - Disclosure - Discontinued Operations - Additional Information (Detail) link:calculationLink link:presentationLink link:definitionLink 141 - Disclosure - Summary of Discontinued Operations Activity (Detail) link:calculationLink link:presentationLink link:definitionLink 142 - Disclosure - Components of and Changes in Accumulated Other Comprehensive Income, Net of Related Income Taxes (Detail) link:calculationLink link:presentationLink link:definitionLink 143 - Disclosure - Investments - Additional Information (Detail) link:calculationLink link:presentationLink link:definitionLink 144 - Disclosure - Amortized Cost and Fair Value of Available for Sale Investments (Detail) link:calculationLink link:presentationLink link:definitionLink 145 - Disclosure - Schedule of Unrealized Loss on Available for Sale Investments (Detail) link:calculationLink link:presentationLink link:definitionLink 146 - Disclosure - Schedule of Provision for Income Taxes (Detail) link:calculationLink link:presentationLink link:definitionLink 147 - Disclosure - Schedule of Deferred Tax Assets and Liabilities (Detail) link:calculationLink link:presentationLink link:definitionLink 148 - Disclosure - Income Taxes - Additional Information (Detail) link:calculationLink link:presentationLink link:definitionLink 149 - Disclosure - Schedule of Income Taxes Calculated on Income from Continuing Operations Before Income Taxes and Provision for Income Taxes (Detail) link:calculationLink link:presentationLink link:definitionLink 150 - Disclosure - Schedule for Gross Unrecognized Tax Benefits (Detail) link:calculationLink link:presentationLink link:definitionLink 151 - Disclosure - Operating Property (Detail) link:calculationLink link:presentationLink link:definitionLink 152 - Disclosure - Operating Property - Additional Information (Detail) link:calculationLink link:presentationLink link:definitionLink 153 - Disclosure - Retirement Plan - Additional Information (Detail) link:calculationLink link:presentationLink link:definitionLink 154 - Disclosure - Schedule of Long-Term Debt (Detail) link:calculationLink link:presentationLink link:definitionLink 155 - Disclosure - Debt - Additional Information (Detail) link:calculationLink link:presentationLink link:definitionLink 156 - Disclosure - Minimum Lease Payments (Detail) link:calculationLink link:presentationLink link:definitionLink 157 - Disclosure - Minimum Lease Payments (Parenthetical) (Detail) link:calculationLink link:presentationLink link:definitionLink 158 - Disclosure - Leases - Additional Information (Detail) link:calculationLink link:presentationLink link:definitionLink 159 - Disclosure - Share Based Payment Arrangements - Additional Information (Detail) link:calculationLink link:presentationLink link:definitionLink 160 - Disclosure - Amounts Recognized in Financial Statements with Respect to Plans (Detail) link:calculationLink link:presentationLink link:definitionLink 161 - Disclosure - Weighted Average Assumptions for Option Grants (Detail) link:calculationLink link:presentationLink link:definitionLink 162 - Disclosure - Summary of Information Regarding Stock Options (Detail) link:calculationLink link:presentationLink link:definitionLink 163 - Disclosure - Summary Stock Options Outstanding and Exercisable (Detail) link:calculationLink link:presentationLink link:definitionLink 164 - Disclosure - Schedule of Information on Non-Vested Restricted Stock (Detail) link:calculationLink link:presentationLink link:definitionLink 165 - Disclosure - Information Regarding Outstanding Restricted Stock Units Awards (Detail) link:calculationLink link:presentationLink link:definitionLink 166 - Disclosure - Equity - Additional Information (Detail) link:calculationLink link:presentationLink link:definitionLink 167 - Disclosure - Commitments and Contingencies - Additional Information (Detail) link:calculationLink link:presentationLink link:definitionLink 168 - Disclosure - Segment Information - Additional Information (Detail) link:calculationLink link:presentationLink link:definitionLink 169 - Disclosure - Information Regarding Reportable Business Segments (Detail) link:calculationLink link:presentationLink link:definitionLink 170 - Disclosure - Quarterly Financial Data (Detail) link:calculationLink link:presentationLink link:definitionLink