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Cover
Cover
Financial Statements
Consolidated Balance Sheets
Consolidated Balance Sheets (Parenthetical)
Consolidated Statements of Operations
Consolidated Statements of Comprehensive Income
Consolidated Statements of Comprehensive Income (Parenthetical)
Consolidated Statements of Stockholders' Equity
Consolidated Statements of Cash Flows
Notes to Financial Statements
Basis of Presentation
Recent Accounting Pronouncements
Revenue from Contracts with Customers
Acquisitions
Property and Equipment, Net
Goodwill and Other Intangible Assets
Investments
Leases
Accruals and Other Current Liabilities
Long‑Term Debt
Executive Bonus Plan
Retirement Plans
Common Stock
Accumulated Other Comprehensive Loss
Stock-Based Compensation
Income Taxes
Fair Value of Financial Instruments
Commitments and Contingencies
Geographic Data
Other Income, Net
Net Income Per Share
Accounting Policies
Basis of Presentation (Policies)
Notes Tables
Revenue from Contracts with Customers (Tables)
Acquisitions (Tables)
Property and Equipment, Net (Tables)
Goodwill and Other Intangible Assets (Tables)
Investments (Tables)
Leases (Tables)
Accruals and Other Current Liabilities (Tables)
Long‑Term Debt (Tables)
Retirement Plans (Tables)
Common Stock (Tables)
Accumulated Other Comprehensive Loss (Tables)
Stock-Based Compensation (Tables)
Income Taxes (Tables)
Fair Value of Financial Instruments (Tables)
Geographic Data (Tables)
Other Income, Net (Tables)
Net Income Per Share (Tables)
Notes Details
Revenue from Contracts with Customers - Schedule of Revenue Disaggregation by Type (Details)
Revenue from Contracts with Customers - Narrative (Details)
Revenue from Contracts with Customers - Schedule of Contract Assets and Deferred Revenue (Details)
Revenue from Contracts with Customers - Schedule of Revenue Disaggregation by Location (Details)
Revenue from Contracts with Customers - Performance Obligation (Details)
Acquisitions - Schedule of Cash Paid and Acquired for Acquisitions (Details)
Acquisitions - Narrative (Details)
Acquisitions - Schedule of Contingent and Non-Contingent Consideration Fair Value (Details)
Acquisitions - Schedule of Consideration and Net Assets Acquired (Details)
Property and Equipment, Net - Schedule of Property and Equipment, Net (Details)
Property and Equipment, Net - Narrative (Details)
Goodwill and Other Intangible Assets - Goodwill (Details)
Goodwill and Other Intangible Assets - Intangible Assets Other than Goodwill (Details)
Goodwill and Other Intangible Assets - Finite-lived Intangible Assets Amortization Expense (Details)
Investments - Schedule of Investments (Details)
Investments - Narrative (Details)
Leases - Narrative (Details)
Leases - Lease Cost (Details)
Leases - Other Information (Details)
Accruals and Other Current Liabilities (Details)
Long‑Term Debt - Schedule of Long-Term Debt (Details)
Long‑Term Debt - Narrative (Details)
Long‑Term Debt - Schedule of Interest Expense (Details)
Executive Bonus Plan (Details)
Retirement Plans - Narrative (Details)
Retirement Plans - Schedule of Deferred Compensation Plan Liabilities (Details)
Common Stock - Narrative (Details)
Common Stock - Schedule of Dividends (Details)
Accumulated Other Comprehensive Loss - Rollforward of AOCI (Details)
Stock-Based Compensation - Summary of Stock-Based Compensation Expense (Details)
Stock-Based Compensation - Options Outstanding Rollforward (Details)
Stock-Based Compensation - Stock Options Narrative (Details)
Stock-Based Compensation - Restricted Stock and Restricted Stock Units Narrative (Details)
Stock-Based Compensation - Restricted Stock and RSUs Activity (Details)
Income Taxes - Schedule of Components of Income Tax (Details)
Income Taxes - Narrative (Details)
Fair Value of Financial Instruments - Narrative (Details)
Fair Value of Financial Instruments - Fair Value of Financial Assets and Liabilities (Details)
Fair Value of Financial Instruments - Reconciliation of the Changes in Fair Value of Financial Liabilities (Details)
Commitments and Contingencies (Details)
Geographic Data (Details)
Other Income, Net - Schedule of Other Income (Details)
Net Income Per Share - Narrative (Details)
Net Income Per Share - Schedule of Basic and Diluted Net Income Per Share (Details)
Net Income Per Share - Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share (Details)
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