0000001 - Document - Document and Entity Information link:presentationLink link:calculationLink link:definitionLink 9952151 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) link:presentationLink link:calculationLink link:definitionLink 9952152 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 9952153 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF INCOME (Unaudited) link:presentationLink link:calculationLink link:definitionLink 9952154 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Unaudited) link:presentationLink link:calculationLink link:definitionLink 9952155 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Unaudited) (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 9952156 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) link:presentationLink link:calculationLink link:definitionLink 9952157 - Disclosure - Basis of Presentation link:presentationLink link:calculationLink link:definitionLink 9952158 - Disclosure - Revenues link:presentationLink link:calculationLink link:definitionLink 9952159 - Disclosure - Earnings Per Share link:presentationLink link:calculationLink link:definitionLink 9952160 - Disclosure - Investments link:presentationLink link:calculationLink link:definitionLink 9952161 - Disclosure - Fair Value Measurements link:presentationLink link:calculationLink link:definitionLink 9952162 - Disclosure - Leases link:presentationLink link:calculationLink link:definitionLink 9952163 - Disclosure - Supplemental Cash Flow Information link:presentationLink link:calculationLink link:definitionLink 9952164 - Disclosure - Stock-Based Compensation link:presentationLink link:calculationLink link:definitionLink 9952165 - Disclosure - Recently Issued Accounting Pronouncements link:presentationLink link:calculationLink link:definitionLink 9952166 - Disclosure - Segment Reporting link:presentationLink link:calculationLink link:definitionLink 9955511 - 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Disclosure - Leases (Components of total lease cost) (Details) link:presentationLink link:calculationLink link:definitionLink 9955529 - Disclosure - Leases (Supplemental cash flow information related to leases) (Details) link:presentationLink link:calculationLink link:definitionLink 9955530 - Disclosure - Leases (Undiscounted future lease payment liabilities) (Details) link:presentationLink link:calculationLink link:definitionLink 9955531 - Disclosure - Supplemental Cash Flow Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955532 - Disclosure - Stock-Based Compensation (Narrative) (Details) link:presentationLink link:calculationLink link:definitionLink 9955533 - Disclosure - Stock-Based Compensation (Compensation Expenses) (Details) link:presentationLink link:calculationLink link:definitionLink 9955534 - Disclosure - Stock-Based Compensation (Non-vested Shares) (Details) link:presentationLink link:calculationLink link:definitionLink 9955535 - Disclosure - Segment Reporting (Details) link:presentationLink link:calculationLink link:definitionLink