Accounting Policies [Abstract] Accounting Policies [Abstract] Accounts, Notes, Loans and Financing Receivable [Line Items] Accounts, Notes, Loans and Financing Receivable [Line Items] Accounts Payable, Current Accounts payable Accounts Payable [Member] Accounts Payable Accounts Receivable, Gross, Current Total Gross Accounts Receivable Accounts Receivable [Member] Accounts Receivable Accounts Receivable, Net, Current Accounts receivable, net Accounts Receivable, net Accrued Liabilities and Other Liabilities Accrued expenses and other liabilities Accrued Liabilities [Member] Accrued Expenses Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Accumulated depreciation and amortization Additional Paid in Capital, Common Stock Additional paid-in capital Additional Paid-in Capital [Member] Additional Paid-In Capital Adjacent [Member] Adjacent [Member] Adjacent Office Facility Adjustments Related to Tax Withholding for Share-based Compensation Shares withheld for taxes paid on stock awards Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition Stock-based compensation expense Adjustments to Additional Paid in Capital, Income Tax Benefit from Share-based Compensation Tax benefit from 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: Advertising Costs, Policy [Policy Text Block] Advertising Costs and Allowances Advertising Expense Advertising expense Allocated Share-based Compensation Expense Pre-tax compensation expense Allocated Share-based Compensation Expense, Net of Tax Net effect on net income Allowance for Doubtful Accounts [Member] Allowance for Doubtful Accounts Allowance for Doubtful Accounts Receivable, Current Doubtful accounts Allowance for Sales Returns [Member] Allowance for Sales Returns Amendment Flag Amendment Flag Amortization of Intangible Assets Amortization expense Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Employee stock awards Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Assets Total assets Total Assets Assets [Abstract] ASSETS Total assets: Assets, Current Total current assets Assets, Current [Abstract] Current Assets: Award Type [Axis] Award Type [Axis] Basic And Diluted Earning Per Share [Abstract] Basic And Diluted Earning Per Share [Abstract] Basic And Diluted Earning Per Share [Abstract] Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability Fair value adjustment to contingent consideration Capital Expenditures Incurred but Not yet Paid Accrued capital expenditures Capitalized Computer Software, Gross Computer software, including licenses and internally-developed software Capital Leased Assets, Gross Facilities and equipment under capital lease with affiliate Cash and Cash Equivalents, at Carrying Value Cash and cash equivalents, end of year Cash and cash equivalents, beginning of year Cash and cash equivalents Cash and Cash Equivalents, Period Increase (Decrease) Increase in cash and cash equivalents Cash and Cash Equivalents, Policy [Policy Text Block] Cash and Cash Equivalents Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] Non-cash Investing and Financing Activities: Commitments and Contingencies Commitments and Contingencies (Note 10) Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Text Block] Commitments And Contingencies Common Stock, Capital Shares Reserved for Future Issuance Common stock reserved for issuance Common Stock, Dividends, Per Share, Cash Paid Dividend per share Common Stock [Member] Common Stock Common Stock, Par or Stated Value Per Share Common Stock, par value Common Stock, Shares Authorized Common Stock, shares authorized Common Stock, Shares, Issued Balance (in shares) Balance (in shares) Common Stock, shares issued Common Stock, Shares, Outstanding Common Stock, shares outstanding Common Stock, Value, Issued Common Stock, $.01 par value, 100,000 shares authorized, 28,199 and 28,056 issued, 26,343 and 26,200 outstanding at December 31, 2014 and 2013, respectively Compensation and Employee Benefit Plans [Text Block] Employee Benefit Plan Compensation and Retirement Disclosure [Abstract] Compensation and Retirement Disclosure [Abstract] Component Of Other Operating Income And Expense [Line Items] Component Of Other Operating Income And Expense [Line Items] Component Of Other Operating Income And Expense [Line Items] Component Of Other Operating Income And Expense [Table] Component Of Other Operating Income And Expense [Table] Component Of Other Operating Income And Expense [Table] Comprehensive Income (Loss), Net of Tax, Attributable to Parent Comprehensive income Comprehensive Income, Policy [Policy Text Block] Comprehensive Income Computer Software, Intangible Asset [Member] Software Concentration Risk Type [Axis] Concentration Risk Type [Axis] Concentration Risk, Credit Risk, Policy [Policy Text Block] Concentrations Concentration Risk, Percentage Percentage of sales by segment Percentage of total net sales Concentration Risk Type [Domain] Concentration Risk Type [Domain] Condensed Financial Information of Subsidiaries Disclosure [Abstract] Condensed Financial Information of Subsidiaries Disclosure [Abstract] Condensed Financial Information of Subsidiaries Disclosure [Abstract] Consolidation Items [Axis] Consolidation Items [Axis] Consolidation Items [Domain] Consolidation Items [Domain] Consolidation, Policy [Policy Text Block] Principles of Consolidation Corporate Headquarters [Member] Corporate Headquarters [Member] Corporate Headquarters Cost of Revenue Cost of sales Cost of Sales, Policy [Policy Text Block] Cost of Sales and Certain Other Costs Cost of Sales, Vendor Allowances, Policy [Policy Text Block] Vendor Allowances Credit and Debit Card Receivables, at Carrying Value Amounts due from banks for credit card transactions, classified as cash equivalents Current Federal Tax Expense (Benefit) Federal Current Fiscal Year End Date Current Fiscal Year End Date Current Income Tax Expense (Benefit) Total current Current Income Tax Expense (Benefit), Continuing Operations [Abstract] Current: Current State and Local Tax Expense (Benefit) State Customer Lists [Member] Customer List Debt Disclosure [Abstract] Debt Disclosure [Abstract] Debt Disclosure [Text Block] Bank Borrowings Debt Instrument, Description of Variable Rate Basis Debt instrument, description of variable rate basis Debt Instrument, Interest Rate, Stated Percentage Debt instrument, interest rate Debt Instrument [Line Items] Debt Instrument [Line Items] Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Deferred Federal Income Tax Expense (Benefit) Federal Deferred Income Tax Assets And Liabilities [Line Items] Deferred Income Tax Assets And Liabilities [Line Items] Deferred Income Tax Assets And Liabilities [Line Items] Deferred Income Tax Assets And Liabilities [Table] Deferred Income Tax Assets And Liabilities [Table] Deferred Income Tax Assets And Liabilities [Table] Deferred Income Tax Expense (Benefit) Deferred income taxes Total deferred Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract] Deferred: Deferred State and Local Income Tax Expense (Benefit) State Deferred Tax Assets, Gross Total gross deferred tax assets Deferred Tax Assets, Inventory Inventory costs capitalized for tax purposes Deferred Tax Assets, Net Net deferred tax liability Deferred Tax Assets, Net, Current Current deferred tax assets Deferred Tax Assets, Net, Noncurrent Noncurrent deferred tax liability Deferred Tax Assets, Net of Valuation Allowance Net deferred tax assets Deferred Tax Assets, Net [Abstract] Deferred tax assets: Deferred Tax Assets, Net of Valuation Allowance, Current Deferred income taxes Deferred Tax Assets, Operating Loss Carryforwards, State and Local Operating loss carryforwards, state tax benefits net of federal taxes State tax loss carryforwards Deferred Tax Assets, Operating Loss Carryforwards, Subject to Expiration State net operating loss carryforwards Deferred Tax Assets, Other Other Deferred Tax Assets, State Taxes State tax contingency Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Employee Benefits Deductible expenses, primarily employee-benefit related Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Employee Bonuses Accrued compensation Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Share-based Compensation Cost Compensation under non-statutory stock option agreements Deferred Tax Assets, Tax Deferred Expense, Other Federal benefit for uncertain state tax positions Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Allowance for Doubtful Accounts Provisions for doubtful accounts Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Loss Reserves Inventory valuation reserves Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Returns and Allowances Sales return reserves Deferred Tax Assets, Valuation Allowance State tax credit and state tax loss carryforwards, valuation allowance Less: Valuation allowance Deferred Tax Expense from Stock Options Exercised Income tax benefit from stock-based compensation Deferred Tax Liabilities, Goodwill and Intangible Assets Goodwill and other intangibles Amount before allocation of valuation allowances of deferred tax liability to taxable temporary differences. Deferred Tax Liabilities, Gross Total gross deferred tax liabilities Deferred Tax Liabilities, Net [Abstract] Deferred tax liabilities: Deferred Tax Liabilities, Net, Noncurrent Deferred income taxes Deferred Tax Liabilities, Property, Plant and Equipment Property and equipment Defined Contribution Plan Disclosure [Line Items] Defined Contribution Plan Disclosure [Line Items] Defined Contribution Plan, Employer Discretionary Contribution Amount Employer matching contributions to employee savings Defined Contribution Plan [Table] Defined Contribution Plan [Table] Depreciation, Depletion and Amortization, Nonproduction Depreciation and amortization Depreciation, Depletion and Amortization [Abstract] Depreciation and amortization: Depreciation, Depletion and Amortization Depreciation and amortization Disclosure of Compensation Related Costs, Share-based Payments [Abstract] Disclosure of Compensation Related Costs, Share-based Payments [Abstract] Disclosure Of Stockholders Equity And Share Based Compensation Arrangement By Share Based Payment [Abstract] Disclosure Of Stockholders Equity And Share Based Compensation Arrangement By Share Based Payment [Abstract] Disclosure Of Stockholders Equity And Share Based Compensation Arrangement By Share Based Payment [Abstract] Dividend Declared [Line Items] Dividend Declared [Line Items] Dividend Declared [Line Items] Dividend Declared [Table] Dividend Declared [Table] Dividend Declared [Table] Dividends, Common Stock, Cash Dividend payment Dividends Declared [Table Text Block] Dividend Payments Dividends Payable, Date of Record Shareholder record date 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 Information [Line Items] Document Information [Line Items] Document Information [Table] Document Information [Table] Document Period End Date Document Period End Date Document Type Document Type Due from Affiliate, Current Due from affiliates Due from Employees, Current Due from employees Earnings Per Share [Abstract] Earnings per common share: Earnings per share: Earnings Per Share, Basic Basic Earnings Per Share Basic And Diluted [Line Items] Earnings Per Share Basic And Diluted [Line Items] Earnings Per Share Basic And Diluted [Line Items] Earnings Per Share Basic And Diluted [Table] Earnings Per Share Basic And Diluted [Table] Earnings Per Share Basic And Diluted [Table] Earnings Per Share, Diluted Diluted Earnings Per Share, Policy [Policy Text Block] Earnings Per Share Employee-related Liabilities, Current Accrued payroll Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition Unrecognized compensation costs, weighted average period of recognition Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Share-based Awards Other than Options Unearned compensation cost Employee Service Share-based Compensation, Tax Benefit from Compensation Expense Tax benefit Share based compensation expense during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). Employee Share Based Compensation Expense for Phantom Stock Units Compensation expense Employee Stock Option [Member] Stock Options Employee Stock Purchase Plan [Member] Employee Stock Purchase Plan [Member] 1997 Employee Stock Purchase Plan Entity Central Index Key Entity Central Index Key Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Entity Current Reporting Status Entity Current Reporting Status Entity [Domain] Entity [Domain] Entity Filer Category Entity Filer Category Entity Public Float Entity Public Float Entity Registrant Name Entity Registrant Name Entity Voluntary Filers Entity Voluntary Filers Entity Well-known Seasoned Issuer Entity Well-known Seasoned Issuer Equity Component [Domain] Equity Component [Domain] Equity Incentive Plan Nineteen Ninety Seven [Member] Equity Incentive Plan Nineteen Ninety Seven [Member] 1997 Stock Incentive Plan Excess Tax Benefit from Share-based Compensation, Financing Activities Excess tax benefit from exercise of equity awards Excess Tax Benefit from Share-based Compensation, Operating Activities Excess tax benefit from exercise of equity awards Expire in 2018 [Member] Expire in 2018 [Member] Expiring After 2018 Expire In Twenty Nineteen [Member] Expire In Twenty Nineteen [Member] Expiring After 2019 Expire in 2017 [Member] Expire in 2017 [Member] Expiring After 2017 Expire in 2016 [Member] Expire in 2016 [Member] Expiring After 2016 Fair Value Inputs, Discount Rate Weighted average cost of capital rate Fair Value Inputs, Long-term Revenue Growth Rate Estimated terminal growth rate Federal Government Agencies [Member] Federal Government Agencies [Member] Federal Government Agencies Federal Income Tax Note [Table] Federal Income Tax Note [Table] Financial Statement Line Items with Differences in Reported Amount and Reporting Currency Denominated Amounts [Domain] Financial Statement Line Items with Differences in Reported Amount and Reporting Currency Denominated Amounts [Domain] Finite-Lived Intangible Assets, Accumulated Amortization Accumulated Amortization Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months 2015 Finite-Lived Intangible Assets, Amortization Expense, Year Five 2019 Finite-Lived Intangible Assets, Amortization Expense, Year Four 2018 Finite-Lived Intangible Assets, Amortization Expense, Year Three 2017 Finite-Lived Intangible Assets, Amortization Expense, Year Two 2016 Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets, Gross Gross 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 Net Amount Net Amount Finite-Lived Intangible Asset, Useful Life Estimated Useful Lives Finite-lived intangible assets, estimated useful lives Fixtures and Equipment, Gross Furniture and equipment Gain (Loss) on Disposition of Property Plant Equipment Loss on disposal of fixed assets Geographic Concentration Risk [Member] Geographic Concentration Risk Goodwill Goodwill Net balance Goodwill and Intangible Assets Disclosure [Abstract] Goodwill and Intangible Assets Disclosure [Abstract] Goodwill and Intangible Assets Disclosure [Text Block] Goodwill and Other Intangible Assets Goodwill and Intangible Assets, Policy [Policy Text Block] Goodwill and Other Intangible Assets Goodwill, Gross Goodwill, gross Goodwill, Impaired, Accumulated Impairment Loss Accumulated impairment losses Goodwill [Line Items] Goodwill [Line Items] Goodwill, Period Increase (Decrease) Changes in carrying amount of goodwill Gross Profit Gross profit Gross profit