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Disclosure - Overview and Basis of Presentation link:presentationLink link:calculationLink link:definitionLink 100090 - Disclosure - Summary of Significant Accounting Policies link:presentationLink link:calculationLink link:definitionLink 100100 - Disclosure - Equity and Debt Securities link:presentationLink link:calculationLink link:definitionLink 100110 - Disclosure - Fair Value Measurements link:presentationLink link:calculationLink link:definitionLink 100120 - Disclosure - Fixed Assets link:presentationLink link:calculationLink link:definitionLink 100130 - Disclosure - Other Significant Balance Sheet Accounts link:presentationLink link:calculationLink link:definitionLink 100140 - Disclosure - Reporting Segment and Geographic Information link:presentationLink link:calculationLink link:definitionLink 100150 - Disclosure - Debt, Commitments and Contingencies link:presentationLink link:calculationLink link:definitionLink 100160 - Disclosure - Leases link:presentationLink link:calculationLink link:definitionLink 100170 - 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Disclosure - Summary of Significant Accounting Policies - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 100440 - Disclosure - Summary of Significant Accounting Policies - Summary of Revenue from Contracts with Customers by Payor Type (Details) link:presentationLink link:calculationLink link:definitionLink 100450 - Disclosure - Equity and Debt Securities - Summary of Equity and Debt Securities (Details) link:presentationLink link:calculationLink link:definitionLink 100460 - Disclosure - Equity and Debt Securities - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 100470 - Disclosure - Fair Value Measurements - Information about Financial Assets Measured at Fair Value on Recurring Basis Based on Three-Tier Fair Value Hierarchy (Details) link:presentationLink link:calculationLink link:definitionLink 100480 - Disclosure - Fair Value Measurements - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 100490 - Disclosure - Fixed Assets - Major Classes of Fixed Assets (Details) link:presentationLink link:calculationLink link:definitionLink 100500 - Disclosure - Fixed Assets - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 100510 - Disclosure - Other Significant Balance Sheet Accounts - Schedule of Other Current Assets (Details) link:presentationLink link:calculationLink link:definitionLink 100520 - Disclosure - Other Significant Balance Sheet Accounts - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 100530 - Disclosure - Reporting Segment and Geographical Information - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 100540 - Disclosure - Reporting Segment and Geographical Information - Summary of Revenue by Geographic Region (Details) link:presentationLink link:calculationLink link:definitionLink 100550 - Disclosure - Debt, Commitments and Contingencies - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 100560 - Disclosure - Leases - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 100570 - Disclosure - Leases - Schedule of Operating and Finance Lease Right-of-Use Asset, Short-term Lease Liabilities, and Long-term Lease Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 100580 - Disclosure - Leases - Schedule of Operating and Financing Lease Expense (Details) link:presentationLink link:calculationLink link:definitionLink 100590 - Disclosure - Leases - Schedule of Supplemental Information Related to Leases (Details) link:presentationLink link:calculationLink link:definitionLink 100600 - Disclosure - Leases - Schedule of Maturity Analysis of Operating and Finance Lease Liabilities using Undiscounted Cash Flows on an Annual Basis (Details) link:presentationLink link:calculationLink link:definitionLink 100610 - Disclosure - 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Disclosure - Equity-Based Compensation - Summary of Activity for RSUs Relating to Shares of Company's Common Stock (Details) link:presentationLink link:calculationLink link:definitionLink 100680 - Disclosure - Equity-Based Compensation - Summary of Weighted-Average Assumptions Used to Estimate Fair Value of Options to Acquire Shares of Company's Common Stock (Details) link:presentationLink link:calculationLink link:definitionLink 100690 - Disclosure - Income Taxes - Summary of Income (Loss) Before Income Taxes and Equity Loss in Investee and Gain (Loss) on Equity-Method Investments (Details) link:presentationLink link:calculationLink link:definitionLink 100700 - Disclosure - Income Taxes - Income Tax Expense (Benefit) (Details) link:presentationLink link:calculationLink link:definitionLink 100710 - Disclosure - Income Taxes - Reconciliation of Difference between Federal Statutory Income Tax Rate and Effective Income Tax Rate (Details) link:presentationLink link:calculationLink link:definitionLink 100720 - Disclosure - Income Taxes - Summary of Elements of Deferred Tax Assets (Liabilities) (Details) link:presentationLink link:calculationLink link:definitionLink 100730 - Disclosure - Income Taxes - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 100740 - Disclosure - Income Taxes - Reconciliation of Gross Unrecognized Tax Benefits (Details) link:presentationLink link:calculationLink link:definitionLink 100750 - Disclosure - Income per Share - Reconciliation of Basic and Diluted Income Per Share Computations (Details) link:presentationLink link:calculationLink link:definitionLink 100760 - Disclosure - Income per Share - Anti-dilutive Securities Excluded from Calculation of Diluted Income Per Share (Details) link:presentationLink link:calculationLink link:definitionLink 100770 - Disclosure - Retirement Plans - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 100780 - Disclosure - Related Party - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 100790 - Disclosure - Business Combinations - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 100800 - Disclosure - Business Combinations - Summary of Consideration Paid and Amount of Assets Acquired and Liabilities Assumed (Details) link:presentationLink link:calculationLink link:definitionLink 100810 - Disclosure - Business Combinations - Summary of Unaudited Pro Forma Financial Information (Details) link:presentationLink link:calculationLink link:definitionLink 100820 - Disclosure - Stock Repurchase Program - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 100830 - Disclosure - Equity Distribution Agreements - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 100840 - Disclosure - Goodwill and Intangible Assets - Summaries of Goodwill and Acquisitions-Related Intangibles Balances (Details) link:presentationLink link:calculationLink link:definitionLink 100850 - Disclosure - Goodwill and Intangible Assets - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 100860 - Disclosure - Goodwill and Intangible Assets - Summary of Carrying Amount of Goodwill (Details) link:presentationLink link:calculationLink link:definitionLink 100870 - Disclosure - Goodwill and Intangible Assets - Summary of Annual Amortization Expense For Acquisition-Related Intangibles (Details) link:presentationLink link:calculationLink link:definitionLink 100880 - Disclosure - Selected Quarterly Financial Data (Unaudited) - Unaudited Quarterly Data (Details) link:presentationLink link:calculationLink link:definitionLink 100890 - Disclosure - Subsequent Event - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink