Accounting Policies [Abstract] Accounting Policies [Abstract] Accounts Payable Accrued Liabilities And Other Liabilities Disclosure Current [Text Block] Accrued Expenses and Other Current Liabilities Accounts Payable Current Accounts payable Accounts Receivable Net Current Accounts receivable, less allowance for doubtful accounts of $243 and $227, respectively Accrued Expenses And Other Current Liabilities [Line Items] Accrued Expenses And Other Current Liabilities [Line Items] Accrued Expenses And Other Current Liabilities [Line Items] Accrued Expenses And Other Current Liabilities [Table] Accrued Expenses And Other Current Liabilities [Table] Accrued Expenses And Other Current Liabilities [Table] Accrued Liabilities Current Accrued expenses and other current liabilities Additional Paid In Capital Common Stock Additional paid-in capital Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities [Abstract] Reconciliation of net income to net cash provided by operating activities Allowance For Doubtful Accounts Receivable Current Allowance for doubtful accounts Amendment Flag Amendment Flag Amortization Of Intangible Assets Amortization of intangible assets Assets Total assets Assets Current Total current assets Assets Current [Abstract] CURRENT ASSETS Award Type [Axis] Award Type [Axis] Basis Of Accounting Policy Policy [Text Block] Basis of Presentation Business Description And Accounting Policies [Text Block] Business Description 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 Commitments And Contingencies COMMITMENTS and CONTINGENCIES Common Stock Par Or Stated Value Per Share Common stock, par value Common Stock Purchased Under Employee Stock Purchase Plan Common Stock Purchased Under Employee Stock Purchase Plan Employee stock purchase plan, shares purchased Common Stock Shares Authorized Common stock, shares authorized Common Stock Shares Issued Common stock, shares issued Common Stock Shares Outstanding Common stock, shares outstanding Common Stock Value Common stock, $0.001 par value; 55,000,000 shares authorized; 15,271,191 and 14,812,759 shares issued and outstanding, respectively Cost Of Revenue Cost of revenues Cost Of Sales [Member] Cost of revenues [Member] Current Fiscal Year End Date Current Fiscal Year End Date Customer Relationships [Member] Subscriber relationships [Member] Debt Disclosure [Abstract] Debt Disclosure [Abstract] Debt Disclosure [Text Block] Line of Credit Deferred compensation arrangement with individual common stock available for future purchases. Deferred Compensation Arrangement With Individual Common Stock Available For Future Purchases Common stock available for future purchases Deferred Compensation Arrangement With Individual Common Stock Reserved For Future Issuance Common stock reserved for future issuance Deferred Costs Deferred costs, net of current portion Deferred Costs Current Deferred costs, current Deferred Income Tax Expense Benefit Deferred income taxes Deferred Rent Credit Noncurrent Deferred rent Deferred Revenue Current Deferred revenue, current Deferred Revenue Noncurrent Deferred revenue, less current portion Deferred Tax Assets Net Current Deferred income taxes, current Deferred Tax Assets Net Noncurrent Deferred income taxes, net of current portion Deferred Tax Assets State Taxes State deferred tax Denominator Denominator [Abstract] Denominator Depreciation Depletion And Amortization Depreciation and amortization of property and equipment 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 [Abstract] 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] Net income per share Earnings Per Share Basic Basic Earnings Per Share Diluted Diluted Earnings Per Share [Text Block] Net Income Per Share Employee Related Liabilities Current Accrued compensation and benefits Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items] Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Unrecognized stock-based compensation expense Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition 1 Unrecognized stock-based compensation, expected to be recognized, weighted average period Employee Stock Option [Member] Stock Options [Member] Employee stock purchase plan employees contribution. Employee Stock Purchase Plan Employees Contribution Employee stock purchase plan, employees contribution Employee Stock Purchase Plan [Member] Employee Stock Purchase Plan [Member] Employee Stock Purchase Plan [Member] Entity Central Index Key Entity Central Index Key Entity Common Stock Shares Outstanding Entity Common Stock, Shares Outstanding Entity Filer Category Entity Filer Category Entity Registrant Name Entity Registrant Name Equity incentive plan. Equity Incentive Plan Two Thousand Ten [Member] Equity Incentive Plan 2010 [Member] Excess Tax Benefit From Share Based Compensation Financing Activities Excess tax benefit from exercise of options to purchase common stock Finite Lived Intangible Assets Accumulated Amortization Accumulated Amortization Finite Lived Intangible Assets Amortization Expense After Year Five Thereafter Finite Lived Intangible Assets Amortization Expense Remainder Of Fiscal Year Remainder of 2013 Finite Lived Intangible Assets Amortization Expense Year Five 2017 Finite Lived Intangible Assets Amortization Expense Year Four 2016 Finite Lived Intangible Assets Amortization Expense Year Three 2015 Finite Lived Intangible Assets Amortization Expense Year Two 2014 Finite Lived Intangible Assets By Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Finite Lived Intangible Assets Gross Carrying Amount Finite Lived Intangible Assets [Line Items] Finite-Lived Intangible Assets [Line Items] Finite Lived Intangible Assets Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] Finite Lived Intangible Assets Net INTANGIBLE ASSETS, net Net General And Administrative Expense General and administrative General And Administrative Expense [Member] General and administrative [Member] Goodwill GOODWILL Goodwill And Intangible Assets Disclosure [Abstract] Goodwill and Intangible Assets Disclosure [Abstract] Gross Profit Gross profit Impairment Of Intangible Assets Finitelived Impairment of non-competition agreements Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments Income before income taxes 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 Income tax (expense) benefit Income tax benefit (expense) Increase Decrease In Accounts Payable Accounts payable Increase Decrease In Accounts Receivable Accounts receivable Increase Decrease In Accrued Liabilities Accrued expenses and other current liabilities Increase Decrease In Deferred Charges Deferred costs Increase Decrease In Deferred Liabilities Deferred rent Increase Decrease In Deferred Revenue Deferred revenue Increase Decrease In Employee Related Liabilities Accrued compensation and benefits Increase Decrease In Operating Capital [Abstract] Changes in assets and liabilities Increase Decrease In Prepaid Deferred Expense And Other Assets Prepaid expenses and other current assets Incremental Common Shares Attributable To Share Based Payment Arrangements Options to purchase common stock Intangible Assets Disclosure [Text Block] Intangible Assets, net Interest Expense Interest expense Investment Income Interest Interest income Liabilities Total liabilities Liabilities And Stockholders Equity Total liabilities and stockholder's equity Liabilities Current Total current liabilities Liabilities Current [Abstract] CURRENT LIABILITIES Line Of Credit Facility Amount Outstanding Borrowings outstanding revolving credit agreement Line Of Credit Facility Expiration Date 1 Revolving credit facility, maturity date Line Of Credit Facility Maximum Borrowing Capacity Revolving credit facility, amount Maximum [Member] Maximum [Member] Minimum [Member] Minimum [Member] Net Cash Provided By Used In Financing Activities Net cash provided by financing activities Net Cash Provided By Used In Financing Activities [Abstract] Cash flows from financing activities Net Cash Provided By Used In Investing Activities Net cash used in investing activities Net Cash Provided By Used In Investing Activities [Abstract] Cash flows from investing activities Net Cash Provided By Used In Operating Activities Net cash provided by operating activities Net Cash Provided By Used In Operating Activities [Abstract] Cash flows from operating activities Net Income Loss Net income Net income Net Income Loss [Abstract] Net income per share New Accounting Pronouncements Policy Policy [Text Block] Recent Accounting Pronouncements Noncompete Agreements [Member] Non-competition agreements [Member] Nonoperating Income Expense Total other income (expense), net Nonoperating Income Expense [Abstract] Other income (expense) Number of offerings per year. Number Of Offerings During Year Number of offerings per year Numerator. Numerator [Abstract] Numerator Operating Expenses Total operating expenses Operating Expenses [Abstract] Operating expenses Operating Income Loss Income from operations Organization Consolidation And Presentation Of Financial Statements Disclosure [Text Block] General Other Assets Noncurrent Other non-current assets Other Assets Noncurrent [Abstract] OTHER ASSETS Other Liabilities Noncurrent [Abstract] OTHER LIABILITIES Other Nonoperating Income Expense Other income (expense) Payables And Accruals [Abstract] Payables and Accruals [Abstract] Payments Of Stock Issuance Costs Stock offering costs Payments To Acquire Businesses Net Of Cash Acquired Business acquisitions, net of cash acquired Payments To Acquire Property Plant And Equipment Purchases of property and equipment Percentage of common stock on fair market value. Percentage Of Common Stock On Fair Market Value Percentage of common stock on fair market value Plan Name [Axis] Plan Name [Axis] Plan Name [Domain] Plan Name [Domain] Preferred Stock Par Or Stated Value Per Share Preferred stock, par value Preferred Stock Shares Authorized Preferred stock, shares authorized Preferred Stock Shares Issued Preferred stock, shares issued Preferred Stock Shares Outstanding Preferred stock, shares outstanding Preferred Stock Value Preferred stock, $0.001 par value; 5,000,000 shares authorized; 0 shares issued and outstanding Prepaid Expense And Other Assets Current Prepaid expenses and other current assets Proceeds From Issuance Of Common Stock Proceeds from common stock offering Proceeds From Stock Options Exercised Net proceeds from exercise of options to purchase common stock Proceeds From Stock Plans Net proceeds from employee stock purchase plan Property Plant And Equipment Net PROPERTY AND EQUIPMENT, net Provision For Doubtful Accounts Provision for doubtful accounts Range [Axis] Range [Axis] Range [Member] Range [Domain] Recorded Unconditional Purchase Obligation By Category Of Item Purchased [Axis] Recorded Unconditional Purchase Obligation by Category of Item Purchased [Axis] Recorded Unconditional Purchase Obligation Due Within One Year Future payments for next fiscal year Repayments Of Long Term Capital Lease Obligations Payments of capital lease obligations Research And Development Expense Research and development Research And Development Expense [Member] Research and development [Member] Restricted Stock [Member] Restricted Stock Award [Member] Restricted Stock Units R S U [Member] Restricted Stock Units [Member] Restricted stock units vest over period. Restricted Stock Units Vest Over Period Restricted stock units vest over, period Retained Earnings Accumulated Deficit Accumulated deficit Revenues Revenues Schedule Of Earnings Per Share Basic And Diluted Table [Text Block] Components of Computation of Basic and Diluted Net Income 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 Scheduleof Finite Lived Intangible Assets Future Amortization Expense Table [Text Block] Future Amortization Expense for Intangible Assets Schedule Of Finite Lived Intangible Assets [Table] Schedule of Finite-Lived Intangible Assets [Table] Schedule Of Finite Lived Intangible Assets Table [Text Block] Intangible Assets Schedule Of Share Based Compensation Arrangements By Share Based Payment Award [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule Of Sharebased Compensation Restricted Stock And Restricted Stock Units Activity Table [Text Block] Restricted Stock Units and Restricted Stock Awards Schedule Of Share Based Compensation Stock Options Activity Table [Text Block] Stock Option Activity Schedule Of Share Based Payment Award Employee Stock Purchase Plan Valuation Assumptions Table [Text Block] Weighted Average Fair Value Per Share, Employee Stock Purchase Plan, Assumptions Schedule Of Share Based Payment Award Stock Options Valuation Assumptions Table [Text Block] Weighted Average Fair Value Per Share of Options Granted, Assumptions Selling And Marketing Expense Sales and marketing Selling And Marketing Expense [Member] Sales and marketing [Member] Share Based Compensation Stock-based compensation Stock-based compensation expense Share Based Compensation Arrangement By Share Based Payment Award Award Requisite Service Period 1 Restricted stock awards units vest over, period Share Based Compensation Arrangement By Share Based Payment Award Award Vesting Period 1 Stock options vest, period Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period Forfeited, stock awards Forfeited, stock units Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeitures Weighted Average Grant Date Fair Value Forfeited, Weighted Average Grant Date Fair Value Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Granted, stock units Restricted common stock issued, stock awards Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Weighted Average Grant Date Fair Value Granted, Weighted Average Grant Date Fair Value Restricted common stock issued, Weighted Average Grant Date Fair Value Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number Stock awards, Outstanding at September 30, 2013 Stock awards, Outstanding at December 31, 2012 Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value Weighted average grant date fair value, Outstanding at September 30, 2013 Weighted average grant date fair value, Outstanding at December 31, 2012 Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested And Unissued In Period Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested And Unissued In Period Number of RSU's vested and not issued during the period Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Restrictions lapsed, stock awards Vested, stock units Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Weighted Average Grant Date Fair Value Restrictions lapsed, Weighted Average Grant Date Fair Value Vested, Weighted Average Grant Date Fair Value Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate Expected dividend yield Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term 1 Expected life (in years) Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate Expected volatility Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate Risk-free interest rate Weighted-average risk-free interest rate