CONDENSED BALANCE SHEETS [Abstract] Total current assets Total assets Total current liabilities Total liabilities Total stockholders’ equity Balance Balance Total liabilities and stockholders’ equity CONDENSED STATEMENTS OF OPERATIONS [Abstract] Total operating expenses (Loss) income from operations Income before income taxes Net income Net income CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS Balance (in Shares) Balance (in Shares) Common stock, outstanding (in Shares) Equity Components [Axis] CONDENSED STATEMENTS OF CASH FLOWS [Abstract] Net cash used in operating activities Net cash (used in) provided by investing activities Net decrease in cash and cash equivalents Cash and cash equivalents at beginning of period Cash and cash equivalents at end of period Overview and Basis of Presentation [Abstract] Recently Issued Accounting Standards [Abstract] Revenue Recognition [Abstract] Stock-Based Compensation [Abstract] Statement of Income Location, Balance [Axis] Fair Value Measurements [Abstract] Fair Value Fair Value Hierarchy and NAV [Axis] Measurement Frequency [Axis] Marketable Securities [Abstract] Held-to-maturity securities Net Income per Share [Abstract] Weighted average common shares outstanding – diluted (in Shares) Diluted (in Shares) Commitments and Contingencies [Abstract] Segment Reporting [Abstract] Data and product costs subtotal Data and product costs Selling, general and administrative expenses subtotal Selling, general and administrative expenses Consolidation Items [Axis] Document Type Document Quarterly Report Document Period End Date Document Fiscal Year Focus Document Transition Report Entity File Number Entity Registrant Name Entity Incorporation, State or Country Code Entity Tax Identification Number City Area Code Local Phone Number Entity Current Reporting Status Entity Interactive Data Current Entity Filer Category Entity Small Business Entity Emerging Growth Company Entity Shell Company Entity Common Stock, Shares Outstanding Entity Central Index Key Amendment Flag Document Fiscal Period Focus Current Fiscal Year End Date ASSETS Current assets: Cash and cash equivalents Held-to-maturity securities Accounts receivable, net of allowance for credit losses of $30,000 Accounts receivable, allowance for credit losses Other current assets Held-to-maturity securities Property and equipment, net Operating lease right-of-use asset, net Goodwill LIABILITIES AND STOCKHOLDERS’ EQUITY Current liabilities: Unexpired subscription revenue Accounts payable Operating lease liability Accrued expenses Deferred tax liabilities, net Unexpired subscription revenue, less current portion Operating lease liability, less current portion Stockholders’ equity: Preferred stock, $.01 par value; authorized 5,000,000 shares; none issued Preferred stock, par value (in Dollars per share) Preferred stock, authorized (in Shares) Preferred stock, issued (in Shares) Common stock, $.01 par value; authorized 32,500,000 shares; issued and outstanding 10,767,501 shares Common stock, par value (in Dollars per share) Common stock, authorized (in Shares) Common stock, issued (in Shares) Additional paid-in capital Accumulated deficit Operating revenues Segment operating revenues Operating expenses: Depreciation and amortization Other income, net Other (income), net Net income per share - Basic (in Dollars per share) Net income per share - Diluted (in Dollars per share) Weighted average number of common shares outstanding Basic (in Shares) Weighted average common shares outstanding – basic (in Shares) Stock-based compensation Cash flows from operating activities: Adjustments to reconcile net income to net cash used by operating activities: Amortization of bond discount Stock-based compensation Changes in operating assets and liabilities: Unexpired subscription revenue Accounts payable Accrued expenses Cash flows from investing activities: Proceeds from held-to-maturity securities Provision for income taxes Provision for income taxes Accounts receivable, net Other current assets Purchase of held-to-maturity securities Purchase of property and equipment Common Stock [Member] Additional Paid-in Capital [Member] Accumulated Deficit [Member] Overview and Basis of Presentation Recently Issued Accounting Standards Revenue Recognition Stock-Based Compensation Stock-based Compensation Expense for Stock Options Stock-based compensation expense Fair Value Measurements Cash and Cash Equivalents and Marketable Securities Measured at Fair Value on Recurring Basis Cash and cash equivalents Held-to-maturity securities Amortized Cost Marketable Securities Cost and Fair Value of Marketable Securities Held-to-maturity securities Gross Unrealized Gain Fair Value Maturities of Marketable Securities Held-to-maturity securities: Due in one year or less Due in 12 – 24 months Net Income per Share Computation of Basic and Diluted Net Income per Share Potential shares exercisable under stock option plans (in Shares) Commitments and Contingencies Segment Reporting Segment Financial Information of Reportable Segments Data and product costs Employee expenses Data feed expenses Hosting and computer services expenses Other data and product costs Selling, general and administrative expenses Employee expenses Professional fee expenses Marketing expenses Occupancy expenses Other general and administrative expenses Other significant segment items Less: Shares which could be repurchased under treasury stock method (in Shares) Data and Product Costs [Member] Selling, General and Administrative Expenses [Member] Level 1 [Member] Recurring [Member] Level 2 [Member] Level 3 [Member] Reportable Segments [Member] Antidilutive Securities [Axis] Accrued bond interest receivable Other-than-temporary impairment loss Antidilutive securities excluded from computation of earnings per share (in Shares) Number of operating segments Number of reportable segments Stock Options [Member] Equity Component [Domain] Statement [Table] CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS Statement of Income Location, Balance [Domain] Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table] Stock-Based Compensation [Abstract] Measurement Frequency [Domain] Fair Value Hierarchy and NAV [Domain] Fair Value, Recurring and Nonrecurring [Table] Fair Value Measurements [Abstract] Debt Securities, Held-to-Maturity [Table] Marketable Securities [Abstract] Consolidation Items [Domain] Schedule of Segment Reporting Information, by Segment [Table] Segment Reporting [Abstract] Antidilutive Securities, Name [Domain] Antidilutive Security, Excluded EPS Calculation [Table] Net Income per Share [Abstract] The amount of data feed expense. Amount, after allowance for credit loss, of investment in debt security measured at amortized cost (held-to-maturity) with single maturity date and allocated without single maturity date, maturing in one through second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). Amount of expense for salary, wage, profit sharing; incentive and equity-based compensation; and other employee benefits attributable to operating costs and expenses. Amount of other data and product coasts classified as other attributable to operating costs and expenses. Amount, before tax, of other-than-temporary impairment (OTTI) on investment in debt security measured at amortized cost (held-to-maturity), recognized in earnings and other comprehensive income (OCI). City Area Code Incremental Common Shares Attributable to Dilutive Effect of Share-Based Payment Arrangements Weighted Average Number of Shares Outstanding, Diluted [Abstract] Operating Costs And Expenses Employee Expenses Operating Costs And Expenses Other Data And Product Costs Other Significant Segment Items Abstract Number of Operating Segments Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Entity Small Business Earnings Per Share, Diluted Common Stock, Value, Issued Incremental Common Shares Attributable to Dilutive Effect of Equity Unit Purchase Agreements Increase (Decrease) in Deferred Revenue Retained Earnings [Member] Fair Value, Inputs, Level 3 [Member] Operating Lease, Liability, Current Assets [Abstract] Selling, General and Administrative Expense Weighted Average Number of Shares Outstanding, Basic Amortization of Debt Discount (Premium) Fair Value, Assets Measured on Recurring Basis [Table Text Block] Held To Maturity Securities Debt Maturities After One Through Two Years Net Carrying Amount Liabilities, Current [Abstract] Selling, General and Administrative Expenses [Member] Selling, General and Administrative Expense [Abstract] Deferred Income Tax Liabilities, Net Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Investments Classified by Contractual Maturity Date [Table Text Block] Other Assets, Current Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block] Local Phone Number Information Technology and Data Processing Labor and Related Expense Share-Based Payment Arrangement [Text Block] Marketing Expense Payments to Acquire Held-to-Maturity Securities Income Tax Expense (Benefit) Operating Costs and Expenses [Abstract] Revenue from Contract with Customer [Text Block] Accounting Standards Update and Change in Accounting Principle [Text Block] Fair Value, Inputs, Level 1 [Member] Data Feed Expense Debt Securities, Held-to-Maturity, Amortized Cost, after Allowance for Credit Loss, Maturity, Allocated and Single Maturity Date, Year One Segment Reporting Information [Line Items] Equity, Attributable to Parent Schedule of Segment Reporting Information, by Segment [Table Text Block] Operating Expenses [Abstract] Revenues Additional Paid in Capital Professional Fees Earnings Per Share, Basic Earnings Per Share [Text Block] Assets Liabilities Equity, Attributable to Parent [Abstract] Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] Current Fiscal Year End Date Entity Shell Company Entity Common Stock, Shares Outstanding Common Stock, Par or Stated Value Per Share Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract] Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Unlabeled Abstract Assets, Fair Value Disclosure Segment Reporting Disclosure [Text Block] Operating Costs and Expenses Document Fiscal Year Focus Common Stock, Shares, Issued Entity Current Reporting Status Entity Emerging Growth Company Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Cash and Cash Equivalents, Fair Value Disclosure Schedule of Held-to-Maturity Securities [Line Items] Common Stock, Shares, Outstanding Cash Provided by (Used in) Investing Activity, Including Discontinued Operation Accrued Investment Income Receivable Weighted Average Number of Shares Outstanding, Diluted Accounts Receivable, Allowance for Credit Loss, Current Preferred Stock, Shares Issued Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss, Noncurrent Fair Value Disclosures [Text Block] Payments to Acquire Property, Plant, and Equipment Occupancy, Net Accounts Receivable, after Allowance for Credit Loss, Current Document Transition Report Cash and Cash Equivalent Accounts Payable, Current Fair Value, Recurring [Member] Debt Securities, Held-to-Maturity, Accumulated Unrecognized Gain Fair Value, Inputs, Level 2 [Member] Assets, Current [Abstract] Document Quarterly Report Property, Plant and Equipment, Net Other Than Temporary Impairment Loss Debt Securities Held To Maturity Before Tax Debt Securities, Held-to-Maturity, Amortized Cost, after Allowance for Credit Loss, Maturity, Allocated and Single Maturity Date Document Fiscal Period Focus Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Liabilities, Current Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation Deferred Revenue, Current Operating Expenses Common Stock, Shares Authorized Increase (Decrease) in Accounts Payable Entity Incorporation, State or Country Code Preferred Stock, Shares Authorized Increase (Decrease) in Accrued Liabilities Document Type Cost of Sales [Member] Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Accrued Liabilities, Current Operating Lease, Liability, Noncurrent Entity Tax Identification Number Entity File Number Amendment Flag Debt Securities, Held-to-Maturity, Fair Value to Amortized Cost, after Allowance for Credit Loss [Abstract] Debt Securities, Held-to-Maturity, Amortized Cost, after Allowance for Credit Loss Debt Securities, Held-to-Maturity, Fair Value Commitments and Contingencies Disclosure [Text Block] Document Period End Date Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Increase (Decrease) in Operating Capital [Abstract] Share-Based Payment Arrangement, Expense APIC, Share-Based Payment Arrangement, Option, Increase for Cost Recognition Operating Income (Loss) Debt Securities, Held-to-Maturity, Amortized Cost, after Allowance for Credit Loss, Maturity, Allocated and Single Maturity Date [Abstract] Additional Paid-in Capital [Member] Operating Segments [Member] Increase (Decrease) in Accounts Receivable Entity Interactive Data Current Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract] Deferred Revenue, Noncurrent Other General and Administrative Expense Liabilities and Equity [Abstract] Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss, Current Entity Central Index Key Entity Filer Category Common Stock [Member] Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract] Proceeds from Sale of Held-to-Maturity Securities Liabilities and Equity Share-Based Payment Arrangement, Noncash Expense Nonoperating Income (Expense) Preferred Stock, Value, Issued Number of Reportable Segments Increase (Decrease) in Other Current Assets Depreciation, Depletion and Amortization, Nonproduction Retained Earnings (Accumulated Deficit) Debt Securities, Held-to-Maturity [Table Text Block] Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block] Goodwill Entity Registrant Name Assets, Current Preferred Stock, Par or Stated Value Per Share Statement [Line Items] Operating Lease, Right-of-Use Asset