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Cover
Cover Page
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 Changes in Equity
Consolidated Statements of Changes in Equity (Parenthetical)
Consolidated Statements of Cash Flows
Consolidated Statements of Cash Flows (Parenthetical)
Notes to Financial Statements
Organization and Principal Activities
Significant Accounting Policies
Business Acquisitions
Short-Term Investments
Prepaid Expenses and Other Current Assets, Net
Property and Equipment, Net
Land Use Rights, Net
Intangible Assets, Net
Goodwill, Net
Long-Term Investments, Net
Fair Value Measurement
Accrued Expenses and Other Current Liabilities
Lease
Long-Term Loan
Redeemable Non-Controlling Interestes
Common Shares and Treasury Stock
Share-Based Compensation
Income Taxes
Net Income Per Share
Related-Parties Transactions
Commitments and Contingencies
Non-controlling Interests
Segment Information
Mainland China Contribution Plan
Statutory Reserves
Restricted Net Assets
Subsequent Events
Accounting Policies
Significant Accounting Policies (Policies)
Notes Tables
Organization and Principal Activities (Tables)
Significant Accounting Policies (Tables)
Business Acquisitions (Tables)
Short-Term Investments (Tables)
Prepaid Expenses and Other Current Assets, Net (Tables)
Property and Equipment, Net (Tables)
Land Use Rights, Net (Tables)
Intangible Assets, Net (Tables)
Goodwill, Net (Tables)
Long-Term Investments, Net (Tables)
Fair Value Measurement (Tables)
Accrued Expenses and Other Current Liabilities (Tables)
Lease (Tables)
Long-Term Loan (Tables)
Common Shares and Treasury Stock (Tables)
Share-Based Compensation (Tables)
Income Taxes (Tables)
Net Income Per Share (Tables)
Related-Parties Transactions (Tables)
Commitments and Contingencies (Tables)
Non-controlling Interests (Tables)
Segment Information (Tables)
Notes Details
Organization and Principal Activities - Details of Company's Major Subsidiaries and VIEs and Its Major Subsidiaries (Detail)
Organization and Principal Activities - Additional Information (Detail)
Organization and Principal Activities - Balances and Amounts of Company's WFOEs and VIEs (Detail)
Significant Accounting Policies - Changes in Allowance for Doubtful Accounts (Detail)
Significant Accounting Policies - Estimated Useful Lives of Assets (Detail)
Significant Accounting Policies - Summary of Estimated Useful Lives of Intangible Assets (Detail)
Significant Accounting Policies - Additional Information (Detail)
Business Acquisitions - Additional Information (Detail)
Business Acquisitions - Purchase Price Allocation (Detail)
Business Acquisitions - Purchase Price Allocation (Parenthetical) (Detail)
Business Acquisitions - Pro forma Results of Operations (Detail)
Short-Term Investments - Summary of Short-Term Investments (Detail)
Short-Term Investments - Additional Information (Detail)
Prepaid Expenses and Other Current Assets, Net - Components of Prepaid Expenses and Other Current Assets, Net (Detail)
Property and Equipment, Net - Summary of Property and Equipment, Net (Detail)
Property and Equipment, Net - Additional Information (Detail)
Land Use Rights, Net - Land Use Rights, Net (Detail)
Land Use Rights, Net - Additional Information (Detail)
Intangible Assets, Net - Schedule of Intangible Assets, Net (Detail)
Intangible Assets, Net - Additional Information (Detail)
Goodwill, Net - Schedule of Goodwill, Net (Detail)
Goodwill, Net - Additional Information (Detail)
Long Term Investments, Net - Schedule of Long Term Investments, Net (Detail)
Long Term Investments, Net - Schedule of Long Term Investments, Net (Parenthetical) (Detail)
Long Term Investments, Net - Additional Information (Detail)
Fair Value Measurement - Schedule of Available-for-Sale Securities Included in Long Term Investments Measured and Recorded at Fair Value on Recurring Basis (Detail)
Fair Value Measurement - Additional Information (Detail)
Fair Value Measurement - Reconciliation of The Fair Value Measurements of Assets And Liabilities Using Significant Unobservable Inputs (level 3) (Detail)
Accrued Expenses and Other Current Liabilities - Schedule of Accrued Expenses and Other Current Liabilities (Detail)
Lease - Additional Information (Detail)
Lease - Summary of Supplemental Cash Flow Information (Details)
Lease - Summary of Maturity Analysis of Annual Undiscounted Cash Flows (Details)
Lease - Summary of Future Minimum Lease Payments (Details)
Long-term loan - Additional Information (Detail)
Long-term loan - Summary of Long Term Debt Maturities (Details)
Redeemable Non-Controlling Interestes - Additional Information (Detail)
Common Shares and Treasury Stock - Movement of the outstanding common shares and treasury stock (Detail)
Common Shares and Treasury Stock - Additional Information (Detail)
Share-Based Compensation - Additional Information (Detail)
Share-Based Compensation - Summary of NES Activities under 2006 and 2016 Share Incentive Plan (Detail)
Share-Based Compensation - Movements of share options under the Koolearn Pre IPO Share Option Scheme (Detail)
Share-Based Compensation - The fair value estimate of share options (Detail)
Share-Based Compensation - Summary Of Share Option Under the Post-IPO Share Option (Detail)
Share-Based Compensation - Summary of Binomial Option-Pricing Model To Determine The Fair Value Of The Share Option As Of The Grant Date (Detail)
Income Taxes - Additional Information (Detail)
Income Taxes - Components of Provision for Income Taxes (Detail)
Income Taxes - Components of Group's Deferred Tax Assets and Liabilities (Detail)
Income Taxes - Reconciliation of Effective Tax Rates from 25% Statutory Tax Rates (Detail)
Income Taxes - Schedule of Increase in Income Tax Expenses and Decrease in Net Income Per Share (Detail)
Net Income Per Share - Computation of Basic and Diluted Net Income Per Share (Detail)
Net Income Per Share - Additional Information (Detail)
Related-Parties Transactions - Balances and Transaction with Related Parties (Detail)
Related-Parties Transactions - Balances and Transaction with Related Parties (Parenthetical) (Detail)
Commitments and Contingencies - Future Minimum Capital Commitments under Non-Cancelable Construction and Investments (Detail)
Non-controlling Interests - Summary of Changes in Non-controlling Interest (Detail)
Non-controlling Interests - Schedule of Effects of Changes in Ownership Interest on Equity (Detail)
Segment Information - Additional Information (Detail)
Segment Information - Schedule of Segment Reporting Information, by Segment (Detail)
Mainland China Contribution Plan - Additional Information (Detail)
Statutory Reserves - Additional Information (Detail)
Restricted Net Assets - Additional Information (Detail)
Subsequent Events - Additional Information (Detail)
All Reports