Accounting Changes And Error Corrections [Abstract] Accounting Changes and Error Corrections [Abstract] Accounting Policies [Abstract] Accounting Policies [Abstract] Accounts Payable Current Accounts payable Accounts Receivable Net Current Accounts receivable, net of allowance for doubtful accounts of $262 and $211 at June 30, 2014 and December 31, 2013, respectively Accrued Liabilities Current Accrued liabilities Accrued Royalties Current Accrued royalties Accumulated Depreciation Depletion And Amortization Property Plant And Equipment Less accumulated depreciation and amortization Accumulated Other Comprehensive Income Loss Net Of Tax Accumulated other comprehensive loss Accumulated Other Comprehensive Income [Member] Accumulated Other Comprehensive Loss [Member] Additional Information Relating To Consolidated Statement Of Cash Flows Textual [Abstract] Additional Information Relating To Consolidated Statement Of Cash Flows Textual [Abstract] Additional Information Relating To Consolidated Statement Of Cash Flows Textual [Abstract] Adjusted [Member] Adjusted [Member] Adjusted [Member] Adjustments [Member] Adjustments [Member] Adjustments [Member] Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value Stock based compensation Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities [Abstract] Adjustments to reconcile net income to net cash provided by operating activities: Allocated Share Based Compensation Expense Stock based compensation expense Total stock based compensation expense Allowance For Doubtful Accounts Receivable Current Allowance for doubtful accounts, net Amendment Flag Amendment Flag Amortized cost and fair value debt securities. Amortized Cost And Fair Value Debt Securities [Abstract] Amortized Cost and Fair Value Debt Securities [Abstract] Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount Total number of common equivalent shares excluded from the calculations of diluted earnings per share Assets Total assets Total assets Assets [Abstract] ASSETS Assets Current Total current assets Assets Current [Abstract] Current assets: Available For Sale Securities Marketable securities Available for sale securities, Fair Value Available For Sale Securities Amortized Cost Available for sale securities, Adjusted Cost Amount of accumulated pre-tax unrealized gain before deducting pre-tax unrealized losses on investments in available-for-sale securities impacting investments. Available For Sale Securities Gross Unrealized Gain Accumulated In Investments Available for sale securities, Unrealized Gains Amount of accumulated pre-tax unrealized loss before deducting pre-tax unrealized gain on investments in available-for-sale securities impacting investments. Available For Sale Securities Gross Unrealized Loss Accumulated In Investments Available for sale securities, Unrealized Losses Award Type [Axis] Award Type [Axis] Business Acquisition Acquiree [Domain] Business Acquisition, Acquiree [Domain] Business Acquisition [Axis] Business Acquisition [Axis] Period for achieving targets under acquisition terms. Business Acquisition Contingent Payment Period Contingent upon achievement of certain financial targets and business outcome, term Business Acquisition Cost Of Acquired Entity Transaction Costs Transaction costs associated with the HCCS acquisition Business Acquisition Date Of Acquisition Agreement 1 Acquisition date of assets Business Acquisition Equity Interests Issued Or Issuable Number Of Shares Issued Consideration paid for acquisition in shares Business Acquisition [Line Items] Business Acquisition [Line Items] Business Combination Acquisition Related Costs Transaction costs associated with the HCCS acquisition Business Combination Contingent Consideration Arrangements Range Of Outcomes Value High Additional consideration paid for acquisition in cash Business Combination Disclosure [Text Block] BUSINESS COMBINATION Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Intangibles Purchase price allocation for identifiable intangible assets Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Liabilities Purchase price allocation for liabilities Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Property Plant And Equipment Purchase price allocation for net tangible assets Business Combinations [Abstract] Business Combinations [Abstract] Capitalized Computer Software Accumulated Amortization Accumulated amortization on capitalized software development Capitalized Computer Software Net Capitalized software development, net of accumulated amortization of $15,838 and $13,910 at June 30, 2014 and December 31, 2013, respectively Cash And Cash Equivalents At Carrying Value Cash and cash equivalents at end of period Cash and cash equivalents at beginning of period Cash and cash equivalents Cash And Cash Equivalents Period Increase Decrease Net increase in cash and cash equivalents Certificates Of Deposit [Member] Certificates of Deposit [Member] Collaborative Arrangement Disclosure [Text Block] COLLABORATIVE ARRANGEMENT Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items] Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items] Commitments And Contingencies Commitments and contingencies Common Stock Including Additional Paid In Capital [Member] Common Stock [Member] Common Stock No Par Value Common stock, no par value Common Stock Shares Authorized Common stock, shares authorized Common Stock Shares Issued Common stock, shares issued Common Stock Shares Outstanding Ending balance, shares Beginning balance, shares Common stock, shares outstanding Common Stocks Including Additional Paid In Capital Common stock, no par value, 75,000 shares authorized; 27,570 and 27,327 shares issued and outstanding at June 30, 2014 and December 31, 2013, respectively Comprehensive Income Net Of Tax Comprehensive income Consolidation Items [Axis] Consolidation Items [Axis] Consolidation Items [Domain] Consolidation Items [Domain] Corporate Debt Securities [Member] Corporate Debt Securities [Member] Cost Of Goods Sold Excluding Depreciation Depletion And Amortization Cost of revenues (excluding depreciation and amortization) Cost Of Sales [Member] Cost of Revenues (Excluding Depreciation and Amortization) [Member] Costs And Expenses Total operating costs and expenses Costs And Expenses [Abstract] Operating costs and expenses: Current Fiscal Year End Date Current Fiscal Year End Date Deferred Revenue Current Deferred revenue Deferred Revenue Noncurrent Deferred revenue, noncurrent Deferred Tax Liabilities Current Deferred tax liabilities, current Deferred Tax Liabilities Noncurrent Deferred tax liabilities, noncurrent Denominator. Denominator [Abstract] Denominator: Depreciation Depletion And Amortization Depreciation and amortization Disclosure Of Compensation Related Costs Sharebased Payments [Abstract] Disclosure of Compensation Related Costs, Share-based Payments [Abstract] Disclosure Of Compensation Related Costs Share Based Payments [Text Block] STOCK BASED COMPENSATION Document and entity information. Document And Entity Information [Abstract] Document And Entity Information [Abstract] Document Fiscal Period Focus Document Fiscal Period Focus Document Fiscal Year Focus Document Fiscal Year Focus Document Period End Date Document Period End Date Document Type Document Type Earnings Per Share [Abstract] Earnings per share: Earnings Per Share Basic Basic Basic earnings per share Earnings Per Share Diluted Diluted Diluted earnings per share Earnings Per Share [Text Block] EARNINGS PER SHARE Effective Income Tax Rate Continuing Operations Effective tax rate Employee Related Liabilities Current Accrued compensation and related expenses Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items] Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] Entity Central Index Key Entity Central Index Key Entity Common Stock Shares Outstanding Entity Common Stock, Shares Outstanding Entity [Domain] Entity [Domain] Entity Filer Category Entity Filer Category Entity Registrant Name Entity Registrant Name Equity Component [Domain] Equity Component [Domain] Expenses related to collaborative arrangement. Expenses Related To Collaborative Arrangement Expenses related to collaborative arrangement Fair Value By Fair Value Hierarchy Level [Axis] Fair Value, Hierarchy [Axis] Fair Value Inputs Level 2 [Member] Level 2 [Member] Fair Value Measurements Fair Value Hierarchy [Domain] Fair Value Hierarchy [Domain] Finite Lived Intangible Assets Accumulated Amortization Accumulated amortization on intangible assets Finite Lived Intangible Assets Net Intangible assets, net of accumulated amortization of $12,517 and $11,389 at June 30, 2014 and December 31, 2013, respectively Furniture And Fixtures Gross Furniture and fixtures General And Administrative Expense Other general and administrative expenses Goodwill Goodwill Purchase price allocation for goodwill Health Care Compliance Strategies Inc. Health Care Compliance Strategies Inc [Member] Health Care Compliance Strategies, Inc. [Member] Healthstream research patient experience. Healthstream Research Patient Experience [Member] Research/Patient Experience [Member] Income from operations. Income From Operations [Abstract] Income from operations Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments Income before income tax provision Income Loss From Equity Method Investments Loss on non-marketable equity investments Income Statement [Abstract] Income Statement [Abstract] Income Statement Location [Axis] Income Statement Location [Axis] Income Statement Location [Domain] Income Statement Location [Domain] Income Tax Disclosure [Abstract] Income Tax Disclosure [Abstract] Income Tax Disclosure [Text Block] INCOME TAXES Income Tax Expense Benefit Deferred income taxes Income tax provision Increase Decrease In Accounts Payable Accounts payable Increase Decrease In Accrued Liabilities Accrued liabilities and accrued compensation and related expenses and other long-term liabilities Increase Decrease In Deferred Revenue Deferred revenue Increase Decrease In Operating Capital [Abstract] Changes in operating assets and liabilities: Increase Decrease In Other Operating Assets Other assets Increase Decrease In Prepaid Deferred Expense And Other Assets Other prepaid expenses and other current assets Increase Decrease In Prepaid Royalties Prepaid royalties Increase Decrease In Receivables Accounts and unbilled receivables Increase Decrease In Royalties Payable Accrued royalties Incremental Common Shares Attributable To Share Based Payment Arrangements Effect of dilutive shares Investments Debt And Equity Securities [Abstract] Investments, Debt and Equity Securities [Abstract] Investments In Debt And Marketable Equity Securities And Certain Trading Assets Disclosure [Text Block] MARKETABLE SECURITIES Investment Type [Axis] Investment Type [Axis] Investment Type Categorization [Member] Investments [Domain] Leasehold Improvements Gross Leasehold improvements Legal Entity [Axis] Legal Entity [Axis] Liabilities And Stockholders Equity Total liabilities and shareholders' equity Liabilities And Stockholders Equity [Abstract] LIABILITIES AND SHAREHOLDERS' EQUITY Liabilities Current Total current liabilities Liabilities Current [Abstract] Current liabilities: Machinery And Equipment Gross Equipment Material Reconciling Items [Member] Unallocated [Member] Net Cash Provided By Used In Financing Activities [Abstract] FINANCING ACTIVITIES: Net Cash Provided By Used In Financing Activities Continuing Operations Net cash provided by financing activities Net cash provided by financing activities Net Cash Provided By Used In Investing Activities [Abstract] INVESTING ACTIVITIES: Net Cash Provided By Used In Investing Activities Continuing Operations Net cash (used in) provided by investing activities Net Cash Provided By Used In Operating Activities [Abstract] OPERATING ACTIVITIES: Net Cash Provided By Used In Operating Activities Continuing Operations Net cash provided by operating activities Net cash provided by operating activities Net Income Loss Net income Net income New Accounting Pronouncements And Changes In Accounting Principles [Text Block] RECENT ACCOUNTING PRONOUNCEMENTS New Accounting Pronouncements Policy Policy [Text Block] RECENT ACCOUNTING PRONOUNCEMENTS Number of stock incentive plans. Number Of Stock Incentive Plans Number of incentive plans Numerator. Numerator [Abstract] Numerator: Operating Income Loss Total income from operations Income from operations Operating Segments [Member] Operating Segments [Member] Organization Consolidation And Presentation Of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization Consolidation And Presentation Of Financial Statements Disclosure [Text Block] BASIS OF PRESENTATION Other Assets Current Other prepaid expenses and other current assets Other Assets Noncurrent Other assets Other Comprehensive Income Loss Net Of Tax Comprehensive income Total other comprehensive income (loss) Other Comprehensive Income Loss Net Of Tax Period Increase Decrease [Abstract] Other comprehensive income, net of taxes: Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax Unrealized gain (loss) on marketable securities Other general and administrative. Other General And Administrative [Member] Other General and Administrative [Member] Other Liabilities Noncurrent Other long term liabilities Other Noncash Expense Other Other Noncash Investing And Financing Items [Abstract] NON-CASH INVESTING AND FINANCING ACTIVITIES: Other Nonoperating Income Expense Other income (expense), net Payments For Software Payments associated with capitalized software development Payments associated with capitalized software development Payments Of Merger Related Costs Financing Activities Payment of earn-outs related to acquisitions Payments Related To Tax Withholding For Share Based Compensation Taxes paid related to net settlement of equity awards Payments To Acquire Available For Sale Securities Debt Purchases of investments in marketable securities Payments To Acquire Businesses Gross Consideration paid for acquisition in cash Payments To Acquire Businesses Net Of Cash Acquired Acquisitions, net of cash acquired Payments To Acquire Equity Method Investments Investments in non-marketable equity investments Payments To Acquire Property Plant And Equipment Purchases of property and equipment Percentage of profit or loss received from collaborative arrangement. Percentage Of Profit Or Loss Received From Collaborative Arrangement Profits or losses received from collaborative arrangement Preliminary purchase price allocation measurement period. Preliminary Purchase Price Allocation Measurement Period Preliminary purchase price allocation measurement period Prepaid Royalties Prepaid royalties, net of amortization Previously Reported [Member] Previously Reported [Member] Previously Reported [Member] Proceeds From Sale And Maturity Of Marketable Securities Proceeds from maturities of investments in marketable securities Proceeds From Stock Options Exercised Proceeds from exercise of stock options Product development. Product Development [Member] Product Development [Member] Property Plant And Equipment Gross Property and equipment, gross Property Plant And Equipment Net Total, property and equipment Property Plant And Equipment Net [Abstract] Property and equipment: Provision For Doubtful Accounts Provision for doubtful accounts Receivables Long Term Contracts Or Programs Accounts receivable -unbilled Reconciliation Of Assets From Segment To Consolidated [Text Block] Business Segment Information Based on Assets Reconciliation Of Revenue From Segments To Consolidated [Table] Reconciliation of Revenue from Segments to Consolidated [Table] Reconciliation Of Revenue From Segments To Consolidated [Text Block] Business Segment Information Based on Net Revenues and Net Income from Operations Research And Development Expense Product development Restricted Stock Units R S U [Member] RSUs [Member] Retained Earnings Accumulated Deficit Accumulated deficit Retained Earnings [Member] Accumulated Deficit [Member] Revenues related to collaborative arrangement. Revenues Related To Collaborative Arrangement Revenues related to collaborative arrangement Sales Revenue Net Revenues, net Total net revenue Sales Revenue Net [Abstract] Revenues Schedule Of Available For Sale Securities [Line Items] Schedule of Available-for-sale Securities [Line Items] Schedule Of Available For Sale Securities Reconciliation Table [Text Block] Fair Value of Available for Sale Marketable Securities Schedule Of Available For Sale Securities [Table] Schedule of Available-for-sale Securities [Table] Schedule Of Business Acquisitions By Acquisition [Table] Schedule of Business Acquisitions, by Acquisition [Table] Schedule Of Collaborative Arrangements And Noncollaborative Arrangement Transactions [Table] Schedule of Collaborative Arrangements and Non-collaborative Arrangement Transactions [Table] Schedule Of Condensed Consolidating Statement Of Cash Flows [Line Items] Schedule Of Condensed Consolidating Statement Of Cash Flows [Line Items] Schedule Of Condensed Consolidating Statement Of Cash Flows [Line Items] Schedule Of Condensed Consolidating Statement Of Cash Flows [Table] Schedule Of Condensed Consolidating Statement Of Cash Flows [Table] Schedule Of Condensed Consolidating Statement Of Cash Flows [Table] Schedule Of Earnings Per Share Basic And Diluted Table [Text Block] Computation of Basic and Diluted Earnings Per Share Schedule Of Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Table] Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table] Schedule Of Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Text Block] Stock Based Compensation Expense Recorded in Condensed Consolidated Statements of Income