0000001 - Document - Cover link:presentationLink link:calculationLink link:definitionLink 0000002 - Document - Audit Information link:presentationLink link:calculationLink link:definitionLink 0000003 - Statement - CONSOLIDATED BALANCE SHEETS link:presentationLink link:calculationLink link:definitionLink 0000004 - Statement - CONSOLIDATED BALANCE SHEETS (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 0000005 - Statement - CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) link:presentationLink link:calculationLink link:definitionLink 0000006 - Statement - CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY link:presentationLink link:calculationLink link:definitionLink 0000007 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS link:presentationLink link:calculationLink link:definitionLink 0000008 - Disclosure - Organization and Basis of Presentation link:presentationLink link:calculationLink link:definitionLink 0000009 - Disclosure - Summary of Significant Accounting Policies link:presentationLink link:calculationLink link:definitionLink 0000010 - Disclosure - Revenue Recognition link:presentationLink link:calculationLink link:definitionLink 0000011 - Disclosure - Acquisitions link:presentationLink link:calculationLink link:definitionLink 0000012 - Disclosure - Goodwill, Trade Names, and Other Intangible Assets link:presentationLink link:calculationLink link:definitionLink 0000013 - Disclosure - Property and Equipment link:presentationLink link:calculationLink link:definitionLink 0000014 - Disclosure - Balance Sheet Details link:presentationLink link:calculationLink link:definitionLink 0000015 - Disclosure - Debt link:presentationLink link:calculationLink link:definitionLink 0000016 - Disclosure - Leases link:presentationLink link:calculationLink link:definitionLink 0000017 - Disclosure - Fair Value Measurements link:presentationLink link:calculationLink link:definitionLink 0000018 - Disclosure - Employee Benefit Plans link:presentationLink link:calculationLink link:definitionLink 0000019 - Disclosure - Contingencies link:presentationLink link:calculationLink link:definitionLink 0000020 - Disclosure - Income Taxes link:presentationLink link:calculationLink link:definitionLink 0000021 - Disclosure - Stockholders' Equity link:presentationLink link:calculationLink link:definitionLink 0000022 - Disclosure - Earnings Per Share link:presentationLink link:calculationLink link:definitionLink 0000023 - Disclosure - Related Party Transactions link:presentationLink link:calculationLink link:definitionLink 0000024 - Disclosure - Segment Data link:presentationLink link:calculationLink link:definitionLink 0000025 - Disclosure - Quarterly Financial Data (Unaudited) link:presentationLink link:calculationLink link:definitionLink 0000026 - Disclosure - Schedule II - Valuation and Qualifying Accounts link:presentationLink link:calculationLink link:definitionLink 0000027 - Disclosure - Summary of Significant Accounting Policies (Policies) link:presentationLink link:calculationLink link:definitionLink 0000028 - Disclosure - Summary of Significant Accounting Policies (Tables) link:presentationLink link:calculationLink link:definitionLink 0000029 - Disclosure - Revenue Recognition (Tables) link:presentationLink link:calculationLink link:definitionLink 0000030 - Disclosure - Acquisitions (Tables) link:presentationLink link:calculationLink link:definitionLink 0000031 - Disclosure - Goodwill, Trade Names, and Other Intangible Assets (Tables) link:presentationLink link:calculationLink link:definitionLink 0000032 - Disclosure - Property and Equipment (Tables) link:presentationLink link:calculationLink link:definitionLink 0000033 - Disclosure - Balance Sheet Details (Tables) link:presentationLink link:calculationLink link:definitionLink 0000034 - Disclosure - Debt (Tables) link:presentationLink link:calculationLink link:definitionLink 0000035 - Disclosure - Leases (Tables) link:presentationLink link:calculationLink link:definitionLink 0000036 - Disclosure - Fair Value Measurements (Tables) link:presentationLink link:calculationLink link:definitionLink 0000037 - Disclosure - Income Taxes (Tables) link:presentationLink link:calculationLink link:definitionLink 0000038 - Disclosure - Stockholders' Equity (Tables) link:presentationLink link:calculationLink link:definitionLink 0000039 - Disclosure - Earnings Per Share (Tables) link:presentationLink link:calculationLink link:definitionLink 0000040 - Disclosure - Segment Data (Tables) link:presentationLink link:calculationLink link:definitionLink 0000041 - Disclosure - Quarterly Financial Data (Unaudited) (Tables) link:presentationLink link:calculationLink link:definitionLink 0000042 - Disclosure - Summary of Significant Accounting Policies - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 0000043 - Disclosure - Summary of Significant Accounting Policies - Allowance for Doubtful Accounts (Details) link:presentationLink link:calculationLink link:definitionLink 0000044 - Disclosure - Summary of Significant Accounting Policies - Reconciliation of Restructuring Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 0000045 - Disclosure - Revenue Recognition - Disaggregation of Revenue (Details) link:presentationLink link:calculationLink link:definitionLink 0000046 - Disclosure - Revenue Recognition- Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 0000047 - Disclosure - Acquisitions - HireUp (Details) link:presentationLink link:calculationLink link:definitionLink 0000048 - Disclosure - Acquisitions - Mint (Details) link:presentationLink link:calculationLink link:definitionLink 0000049 - Disclosure - Acquisitions - Local Business (Details) link:presentationLink link:calculationLink link:definitionLink 0000050 - Disclosure - Acquisitions - Assets Acquired and Liabilities Assumed (Details) link:presentationLink link:calculationLink link:definitionLink 0000051 - Disclosure - Acquisitions - Selected (Details) link:presentationLink link:calculationLink link:definitionLink 0000052 - Disclosure - Acquisitions - Workforce Solutions Group (Details) link:presentationLink link:calculationLink link:definitionLink 0000053 - Disclosure - Acquisitions - Mediscan (Details) link:presentationLink link:calculationLink link:definitionLink 0000054 - Disclosure - Goodwill, Trade Names, and Other Intangible Assets - Acquired Intangible Assets (Details) link:presentationLink link:calculationLink link:definitionLink 0000055 - Disclosure - Goodwill, Trade Names, and Other Intangible Assets - Estimated Annual Amortization Expense (Details) link:presentationLink link:calculationLink link:definitionLink 0000056 - Disclosure - Goodwill, Trade Names, and Other Intangible Assets - Changes in Carrying Amount of Goodwill by Segment (Details) link:presentationLink link:calculationLink link:definitionLink 0000057 - Disclosure - Goodwill, Trade Names, and Other Intangible Assets - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 0000058 - Disclosure - Property and Equipment (Details) link:presentationLink link:calculationLink link:definitionLink 0000059 - Disclosure - Balance Sheet Details (Details) link:presentationLink link:calculationLink link:definitionLink 0000060 - Disclosure - DEBT - Long-term Debt (Details) link:presentationLink link:calculationLink link:definitionLink 0000061 - Disclosure - DEBT - Maturities of Debt (Details) link:presentationLink link:calculationLink link:definitionLink 0000062 - Disclosure - Debt -2021 Term Loan Credit Agreement (Details) link:presentationLink link:calculationLink link:definitionLink 0000063 - Disclosure - Debt - 2019 Loan Agreement (Details) link:presentationLink link:calculationLink link:definitionLink 0000064 - Disclosure - Debt - Note Payable (Details) link:presentationLink link:calculationLink link:definitionLink 0000065 - Disclosure - Leases - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 0000066 - Disclosure - Leases - Balance Sheet Information (Details) link:presentationLink link:calculationLink link:definitionLink 0000067 - Disclosure - Leases - Operating Lease Liability Maturity (Details) link:presentationLink link:calculationLink link:definitionLink 0000067 - Disclosure - Leases - Operating Lease Liability Maturity (Details) link:presentationLink link:calculationLink link:definitionLink 0000068 - Disclosure - Leases - Other Information (Details) link:presentationLink link:calculationLink link:definitionLink 0000069 - Disclosure - Fair Value Measurements - Estimated Fair values Assets and Liabilities Measured on Recurring Basis (Details) link:presentationLink link:calculationLink link:definitionLink 0000070 - Disclosure - Fair Value Measurements - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 0000071 - Disclosure - Fair Value Measurements - Financial Instruments that were not Measured at Fair Value (Details) link:presentationLink link:calculationLink link:definitionLink 0000072 - Disclosure - Employee Benefit Plans (Details) link:presentationLink link:calculationLink link:definitionLink 0000073 - Disclosure - Contingencies (Details) link:presentationLink link:calculationLink link:definitionLink 0000074 - Disclosure - Income Taxes - Components of Income (Loss) Before Income Taxes (Details) link:presentationLink link:calculationLink link:definitionLink 0000075 - Disclosure - Income Taxes - Components of Income Tax Expense (Benefit) (Details) link:presentationLink link:calculationLink link:definitionLink 0000076 - Disclosure - Income Taxes - Significant Components of Deferred Tax Assets and Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 0000077 - Disclosure - Income Taxes - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 0000078 - Disclosure - Income Taxes - Reconciliation of Income Tax Computed At U. S. Federal Statutory Rate to Income Tax (Benefit) Expense (Details) link:presentationLink link:calculationLink link:definitionLink 0000079 - Disclosure - Income Taxes - Reconciliation of Beginning and Ending Balance of Unrecognized Tax Benefits (Details) link:presentationLink link:calculationLink link:definitionLink 0000080 - Disclosure - Stockholders' Equity - Stock Repurchase Program (Details) link:presentationLink link:calculationLink link:definitionLink 0000081 - Disclosure - Stockholders' Equity - Share-Based Payments (Details) link:presentationLink link:calculationLink link:definitionLink 0000082 - Disclosure - Stockholders' Equity - Summary of Restricted Stock Award Activity and Performance Stock Awards (Details) link:presentationLink link:calculationLink link:definitionLink 0000083 - Disclosure - Earnings Per Share - Components of Numerator and Denominator for Computation of Basic and Diluted Earnings per Share (Details) link:presentationLink link:calculationLink link:definitionLink 0000084 - Disclosure - Earnings Per Share - Antidilutive Securities (Details) link:presentationLink link:calculationLink link:definitionLink 0000085 - Disclosure - Related Party Transactions (Details) link:presentationLink link:calculationLink link:definitionLink 0000086 - Disclosure - Segment Data - Operating Segments (Details) link:presentationLink link:calculationLink link:definitionLink 0000087 - Disclosure - Segment Data - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 0000088 - Disclosure - Quarterly Financial Data (Unaudited) (Details) link:presentationLink link:calculationLink link:definitionLink 0000089 - Disclosure - Schedule II - Valuation and Qualifying Accounts (Details) link:presentationLink link:calculationLink link:definitionLink