0000001 - Document - Cover Page link:presentationLink link:calculationLink link:definitionLink 9952151 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS link:presentationLink link:calculationLink link:definitionLink 9952152 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 9952153 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS link:presentationLink link:calculationLink link:definitionLink 9952154 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) link:presentationLink link:calculationLink link:definitionLink 9952155 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 9952156 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY link:presentationLink link:calculationLink link:definitionLink 9952157 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS link:presentationLink link:calculationLink link:definitionLink 9952158 - Disclosure - Description of Business and Basis of Presentation link:presentationLink link:calculationLink link:definitionLink 9952159 - Disclosure - Property and Equipment, Net link:presentationLink link:calculationLink link:definitionLink 9952160 - Disclosure - Investments in Marketable Debt Securities, Available-for-Sale link:presentationLink link:calculationLink link:definitionLink 9952161 - Disclosure - Acquisitions, Goodwill and Other Intangible Assets link:presentationLink link:calculationLink link:definitionLink 9952162 - Disclosure - Selected Balance Sheet Data link:presentationLink link:calculationLink link:definitionLink 9952163 - Disclosure - Related-Party Transactions link:presentationLink link:calculationLink link:definitionLink 9952164 - Disclosure - Fair Value Measurements link:presentationLink link:calculationLink link:definitionLink 9952165 - Disclosure - Stockholders' Equity link:presentationLink link:calculationLink link:definitionLink 9952166 - Disclosure - Stock-Based Compensation Plans link:presentationLink link:calculationLink link:definitionLink 9952167 - Disclosure - Income Taxes link:presentationLink link:calculationLink link:definitionLink 9952168 - Disclosure - Earnings (Loss) per Share link:presentationLink link:calculationLink link:definitionLink 9952169 - Disclosure - Segment Information link:presentationLink link:calculationLink link:definitionLink 9952170 - Disclosure - Commitments and Contingencies link:presentationLink link:calculationLink link:definitionLink 9952171 - Disclosure - Subsequent Events link:presentationLink link:calculationLink link:definitionLink 9955511 - Disclosure - Description of Business and Basis of Presentation (Policies) link:presentationLink link:calculationLink link:definitionLink 9955512 - Disclosure - Property and Equipment, Net (Tables) link:presentationLink link:calculationLink link:definitionLink 9955513 - Disclosure - Investments in Marketable Debt Securities, Available-for-Sale (Tables) link:presentationLink link:calculationLink link:definitionLink 9955514 - Disclosure - Acquisitions, Goodwill and Other Intangible Assets (Tables) link:presentationLink link:calculationLink link:definitionLink 9955515 - Disclosure - Selected Balance Sheet Data (Tables) link:presentationLink link:calculationLink link:definitionLink 9955516 - Disclosure - Fair Value Measurements (Tables) link:presentationLink link:calculationLink link:definitionLink 9955517 - Disclosure - Stock-Based Compensation Plans (Tables) link:presentationLink link:calculationLink link:definitionLink 9955518 - Disclosure - Earnings (Loss) per Share (Tables) link:presentationLink link:calculationLink link:definitionLink 9955519 - Disclosure - Segment Information (Tables) link:presentationLink link:calculationLink link:definitionLink 9955520 - Disclosure - Description of Business and Basis of Presentation (Details) link:presentationLink link:calculationLink link:definitionLink 9955521 - Disclosure - Property and Equipment, Net - Schedule of Property and Equipment, Net (Details) link:presentationLink link:calculationLink link:definitionLink 9955522 - Disclosure - Property and Equipment, Net - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955523 - Disclosure - Investments in Marketable Debt Securities, Available-for-Sale - Schedule of Amortized Cost and Fair Value of Marketable Securities, Available-for-Sale, by Type of Security (Details) link:presentationLink link:calculationLink link:definitionLink 9955523 - Disclosure - Investments in Marketable Debt Securities, Available-for-Sale - Schedule of Amortized Cost and Fair Value of Marketable Securities, Available-for-Sale, by Type of Security (Details) link:presentationLink link:calculationLink link:definitionLink 9955524 - Disclosure - Investments in Marketable Debt Securities, Available-for-Sale - Schedule of Amortized Cost and Fair Value of Investments in Available for Sale Securities Unrealized Loss Position (Details) link:presentationLink link:calculationLink link:definitionLink 9955525 - Disclosure - Investments in Marketable Debt Securities, Available-for-Sale - Schedule of Gross Realized Gains and Losses from Sale of Available for Sale Securities (Details) link:presentationLink link:calculationLink link:definitionLink 9955526 - Disclosure - Investments in Marketable Debt Securities, Available-for-Sale - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955527 - Disclosure - Investments in Marketable Debt Securities, Available-for-Sale - Schedule of Amortized Cost and Fair Value of Marketable Securities, Available-for-Sale, by Contractual Maturity (Details) link:presentationLink link:calculationLink link:definitionLink 9955528 - Disclosure - Acquisitions, Goodwill and Other Intangible Assets - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955529 - Disclosure - Acquisitions, Goodwill and Other Intangible Assets - Schedule of Goodwill and Intangible Assets (Details) link:presentationLink link:calculationLink link:definitionLink 9955529 - Disclosure - Acquisitions, Goodwill and Other Intangible Assets - Schedule of Goodwill and Intangible Assets (Details) link:presentationLink link:calculationLink link:definitionLink 9955530 - Disclosure - Acquisitions, Goodwill and Other Intangible Assets - Schedule of Net Change in Carrying Value of Goodwill (Details) link:presentationLink link:calculationLink link:definitionLink 9955531 - Disclosure - Acquisitions, Goodwill and Other Intangible Assets - Schedule of Estimated Amortization Expense for Intangible Assets (Details) link:presentationLink link:calculationLink link:definitionLink 9955532 - Disclosure - Selected Balance Sheet Data - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955533 - Disclosure - Selected Balance Sheet Data - Schedule of Other Assets (Details) link:presentationLink link:calculationLink link:definitionLink 9955534 - Disclosure - Selected Balance Sheet Data - Schedule of Components of Deferred Compensation and Commissions (Details) link:presentationLink link:calculationLink link:definitionLink 9955535 - Disclosure - Selected Balance Sheet Data - Schedule of Net Change in Carrying Value of Assets Held in Rabbi Trust and Deferred Compensation Liability (Details) link:presentationLink link:calculationLink link:definitionLink 9955536 - Disclosure - Selected Balance Sheet Data - Schedule of Other Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 9955537 - Disclosure - Related-Party Transactions (Details) link:presentationLink link:calculationLink link:definitionLink 9955538 - Disclosure - Fair Value Measurements - Schedule of Assets and Liabilities at Fair Value on Recurring Basis (Details) link:presentationLink link:calculationLink link:definitionLink 9955538 - Disclosure - Fair Value Measurements - Schedule of Assets and Liabilities at Fair Value on Recurring Basis (Details) link:presentationLink link:calculationLink link:definitionLink 9955539 - Disclosure - Fair Value Measurements - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955540 - Disclosure - Fair Value Measurements - Schedule of Reconciliation of Contingent Consideration Measured at Fair Value on Recurring Basis (Details) link:presentationLink link:calculationLink link:definitionLink 9955541 - Disclosure - Fair Value Measurements - Schedule of Fair Value Liabilities Measured On Recurring Basis Valuation Techniques (Details) link:presentationLink link:calculationLink link:definitionLink 9955542 - Disclosure - Stockholders' Equity (Details) link:presentationLink link:calculationLink link:definitionLink 9955543 - Disclosure - Stock-Based Compensation Plans - 2013 Omnibus Equity Incentive Plan (Details) link:presentationLink link:calculationLink link:definitionLink 9955544 - Disclosure - Stock-Based Compensation Plans - Awards Granted and Settled (Details) link:presentationLink link:calculationLink link:definitionLink 9955545 - Disclosure - Stock-Based Compensation Plans - Schedule of Outstanding Awards Under 2013 Omnibus Equity Incentive Plan (Details) link:presentationLink link:calculationLink link:definitionLink 9955546 - Disclosure - Stock-Based Compensation Plans - Outstanding Awards Under 2013 Omnibus Equity Incentive Plan (Details) link:presentationLink link:calculationLink link:definitionLink 9955547 - Disclosure - Stock-Based Compensation Plans - Employee Stock Purchase Plan (Details) link:presentationLink link:calculationLink link:definitionLink 9955548 - Disclosure - Stock-Based Compensation Plans - Schedule of Stock-Based Compensation Expense (Details) link:presentationLink link:calculationLink link:definitionLink 9955549 - Disclosure - Income Taxes (Details) link:presentationLink link:calculationLink link:definitionLink 9955550 - Disclosure - Earnings (Loss) per Share (Details) link:presentationLink link:calculationLink link:definitionLink 9955551 - Disclosure - Segment Information - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955552 - Disclosure - Segment Information - Schedule of Financial Information of Reporting Segment (Details) link:presentationLink link:calculationLink link:definitionLink 9955553 - Disclosure - Commitments and Contingencies (Details) link:presentationLink link:calculationLink link:definitionLink 9955554 - Disclosure - Subsequent Events (Details) link:presentationLink link:calculationLink link:definitionLink