Goodwill and Intangible Assets Disclosure [Abstract] Schedule of Intangible Assets Schedule of Intangible Assets and Goodwill [Table Text Block] Segment Reporting [Abstract] Schedule of Revenue from External Customers by Channel Schedule of Revenue from External Customers by Channel [Table Text Block] Tabular presentation of the description and amount of revenues from each sales channel, reported from external customers during the period, if the information is not provided as part of the reportable operating segment information. Description of Business and Basis of Presentation [Abstract] Description of Business and Basis of Presentation [Abstract] Description of Business and Basis of Presentation Business Description and Basis of Presentation [Text Block] Intangible Assets Intangible Assets Disclosure [Text Block] Fair Value Disclosures [Abstract] Fair Value Measurements Fair Value Disclosures [Text Block] Equity [Abstract] Class of Treasury Stock [Table] Class of Treasury Stock [Table] Share Repurchase Program [Axis] Share Repurchase Program [Axis] Share Repurchase Program [Domain] Share Repurchase Program [Domain] 2015 Share Repurchase Program [Member] 2015 Share Repurchase Program [Member] 2015 Share Repurchase Program [Member] Equity, Class of Treasury Stock [Line Items] Equity, Class of Treasury Stock [Line Items] Stock Repurchase Program, Authorized Amount Stock Repurchase Program, Authorized Amount Treasury Stock, Shares, Acquired Treasury Stock, Shares, Acquired Treasury Stock, Value, Acquired, Cost Method Treasury Stock, Value, Acquired, Cost Method Stock Repurchase Program, Remaining Authorized Repurchase Amount Stock Repurchase Program, Remaining Authorized Repurchase Amount Leases [Abstract] Lease Financing Obligations Lease Financing Obligations [Text Block] Lease Financing Obligations [Text Block] Stockholders' Equity Stockholders' Equity Note Disclosure [Text Block] Earnings Per Share [Abstract] Schedule of Earnings Per Share, Basic and Diluted Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Statement of Cash Flows [Abstract] CASH FLOWS FROM OPERATING ACTIVITIES: Net Cash Provided by (Used in) Operating Activities [Abstract] Net income Net Income (Loss) Attributable to Parent Adjustments to reconcile net income to net cash provided by operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Depreciation and amortization Depreciation, Depletion and Amortization Loss on disposal of property and equipment Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property Amortization of lease financing obligation discount Amortization of Financing Costs Excess tax benefit from share-based compensation Excess Tax Benefit from Share-based Compensation, Operating Activities Share-based compensation Share-based Compensation Non-cash loss on extinguishment of debt Write off of Deferred Debt Issuance Cost Deferred taxes Deferred Income Tax Expense (Benefit) Landlord allowance amortization Landlord Allowance Amortization Landlord Allowance Amortization Payment of original issue discount Payment of Original Issue Discount Payment of Original Issue Discount Changes in operating assets and liabilities: Increase (Decrease) in Operating Capital [Abstract] Receivables, net Increase (Decrease) in Receivables Inventories Increase (Decrease) in Inventories Accounts payable, deferred revenue, and accrued expenses Accounts payable, deferred revenue, and accrued expenses The increase (decrease) during the reporting period for the following: 1) the amounts payable to vendors for goods and services received; 2) the amount of obligations and expenses incurred but not paid; and 3) the carrying value as of the balance sheet date of the liability for outstanding gift cards as well as other deferred revenue amounts. Other assets and liabilities Increase (Decrease) in Other Operating Assets and Liabilities, Net Net cash (used in) provided by operating activities Net Cash Provided by (Used in) Operating Activities CASH FLOWS FROM INVESTING ACTIVITIES: Net Cash Provided by (Used in) Investing Activities [Abstract] Capital expenditures Payments to Acquire Productive Assets Net cash used in investing activities Net Cash Provided by (Used in) Investing Activities CASH FLOWS FROM FINANCING ACTIVITIES: Net Cash Provided by (Used in) Financing Activities [Abstract] Repayment of long-term debt Early Repayment of Senior Debt Payments on lease financing obligations Repayments of Long-term Capital Lease Obligations Excess tax benefit from share-based compensation Excess Tax Benefit from Share-based Compensation, Financing Activities Proceeds from exercise of stock options Proceeds from Issuance of Shares under Incentive and Share-based Compensation Plans, Including Stock Options Repurchase of common stock under share repurchase plan (see Note 11) Payments for Repurchase of Common Stock Repurchase of shares for tax withholding obligations Payments Related to Tax Withholding for Share-based Compensation Net cash used in financing activities Net Cash Provided by (Used in) Financing Activities EFFECT OF EXCHANGE RATE ON CASH Effect of Exchange Rate on Cash and Cash Equivalents NET DECREASE IN CASH AND CASH EQUIVALENTS Cash and Cash Equivalents, Period Increase (Decrease) CASH AND CASH EQUIVALENTS, Beginning of period Cash and Cash Equivalents, at Carrying Value CASH AND CASH EQUIVALENTS, End of period Document And Entity Information [Abstract] Document And Entity Information [Abstract] Entity Registrant Name Entity Registrant Name Entity Central Index Key Entity Central Index Key Current Fiscal Year End Date Current Fiscal Year End Date Entity Filer Category Entity Filer Category Document Type Document Type Document Period End Date Document Period End Date Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Amendment Flag Amendment Flag Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Revenue from External Customers [Table] Revenue from External Customers [Table] Revenue from External Customers [Table] Products and Services [Axis] Products and Services [Axis] Products and Services [Domain] Products and Services [Domain] Apparel [Member] Sales Revenue, Apparel [Member] Sales Revenue, Apparel [Member] Accessories and other [Member] Sales Revenue, Accessories [Member] Sales Revenue, Accessories [Member] Stores [Member] Sales Revenue, Stores [Member] Aggregate revenue during the period from stores products rendered in the normal course of business, after deducting returns, allowances and discounts. E-commerce [Member] Sales Revenue, E-commerce [Member] Aggregate revenue during the period from E-commerce products rendered in the normal course of business, after deducting returns, allowances and discounts. Other Revenue [Member] Other Revenue [Member] Other revenue consists primarily of shipping and handling revenue related to e-commerce activity, gift card breakage, and royalties from the Development Agreement. Revenue from External Customers [Line Items] Revenue from External Customers [Line Items] Revenue from External Customers [Line Items] Number of operating segments Number of Operating Segments Net sales Revenue, Net Share-based Compensation [Abstract] Number of Shares Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] Stock Options Outstanding at beginning of period Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number Stock Options Granted Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross Stock Options Exercised Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Stock Options Forfeited or expired Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period Stock Options Outstanding at end of period Stock Options Expected to Vest at end of period Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number Stock Options Exercisable at end of period Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number Grant Date Weighted Average Exercise Price Per Share Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] Grant Date Weighted Average Exercise Price of Options Outstanding at beginning of period (usd per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price Grant Date Weighted Average Exercise Price of Options Granted (usd per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price Grant Date Weighted Average Exercise Price of Options Exercised (usd per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Grant Date Weighted Average Exercise Price of Options Forfeited or expired (usd per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price Grant Date Weighted Average Exercise Price of Options Outstanding at end of period (usd per share) Grant Date Weighted Average Exercise Price of Options Expected to Vest at end of period (usd per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Exercise Price Grant Date Weighted Average Exercise Price of Options Exercisable at end of period (usd per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Weighted Average Exercise Price Weighted-Average Remaining Contractual Life (in years) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term [Abstract] Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term [Abstract] Weighted Average Remaining Contractual Life of Options Outstanding (in years) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term Weighted Average Remaining Contractual Life of Options Expected to Vest at end of period (in years) Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Remaining Contractual Term Weighted Average Remaining Contractual Life of Options Exercisable at end of period (in years) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term Aggregate Intrinsic Value Share-based Compensation Arrangement by Share-based Payment Award, Intrinsic Value [Abstract] Share-based Compensation Arrangement by Share-based Payment Award, Intrinsic Value [Abstract] Aggregate Intrinsic Value of Options Outstanding at end of period Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value Aggregate Intrinsic Value of Options Expected to Vest at end of period Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Aggregate Intrinsic Value Aggregate Intrinsic Value of Options Exercisable at end of period Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value Company's Stock Options Employee Service Share-based Compensation, Aggregate Disclosures [Abstract] Weighted average grant date fair value of options granted (usd per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value Total intrinsic value of options exercised Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value Statement of Financial Position [Abstract] ASSETS Assets [Abstract] CURRENT ASSETS: Assets, Current [Abstract] Cash and cash equivalents Receivables, net Receivables, Net, Current Inventories Inventory, Net Prepaid minimum rent Prepaid Rent Other Other Assets, Current Total current assets Assets, Current PROPERTY AND EQUIPMENT Property, Plant and Equipment, Gross Less: accumulated depreciation Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Property and equipment, net Property, Plant and Equipment, Net TRADENAME/DOMAIN NAMES/TRADEMARKS Indefinite-Lived Intangible Assets (Excluding Goodwill) DEFERRED TAX ASSETS Deferred Tax Assets, Net of Valuation Allowance, Noncurrent OTHER ASSETS Other Assets, Noncurrent Total assets Assets LIABILITIES AND STOCKHOLDERS’ EQUITY Liabilities and Equity [Abstract] CURRENT LIABILITIES: Liabilities, Current [Abstract] Accounts payable Accounts Payable, Current Deferred revenue Deferred Revenue Accrued expenses Accrued Liabilities, Current Total current liabilities Liabilities, Current DEFERRED LEASE CREDITS Incentive from Lessor OTHER LONG-TERM LIABILITIES Other Liabilities, Noncurrent Total liabilities Liabilities COMMITMENTS AND CONTINGENCIES (Note 10) Commitments and Contingencies STOCKHOLDERS’ EQUITY: Stockholders' Equity Attributable to Parent [Abstract] Preferred stock – $0.01 par value; 10,000 shares authorized; no shares issued or outstanding Preferred Stock, Value, Issued Common stock – $0.01 par value; 500,000 shares authorized; 91,970 shares and 91,127 shares issued at April 30, 2016 and January 30, 2016, respectively, and 79,044 shares and 80,914 shares outstanding at April 30, 2016 and January 30, 2016, respectively Common Stock, Value, Outstanding Additional paid-in capital Additional Paid in Capital, Common Stock Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax Retained earnings Retained Earnings (Accumulated Deficit) Treasury stock – at average cost; 12,926 shares and 10,213 shares at April 30, 2016 and January 30, 2016, respectively Treasury Stock, Value Total stockholders’ equity Stockholders' Equity Attributable to Parent Total liabilities and stockholders’ equity Liabilities and Equity Debt Disclosure [Abstract] Debt Debt Disclosure [Text Block] Earnings Per Share Earnings Per Share [Text Block] Other Stock Options Details [Table] Other Stock Options Details [Table] Other Stock Options Details [Table] Award Type [Axis] Award Type [Axis] Award Type [Domain] Equity Award [Domain] Stock Options [Member] Employee Stock Option [Member] Vesting Details [Line Items] Vesting Details [Line Items] Options Vesting Details [Line Items] Award vesting percentage Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage Award vesting period Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period Requisite service period for retirement eligibility Share-based Compensation Arrangement by Share-based Payment Award, Award Requisite Service Period Minimum age of individual for retirement eligibility Share-Based Compensation Arrangement By Share-Based Payment Award, Minimum Age Of Individual Share-Based Compensation Arrangement By Share-Based Payment Award, Minimum Age Of Individual Contractual term Segment Reporting Segment Reporting Disclosure [Text Block] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Stock Option [Member] Equity Option [Member] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Risk-free interest rate Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate Price volatility Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate Expected term Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term Dividend yield Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] Line of Credit [Member] Line of Credit [Member] Debt Instrument [Line Items] Debt Instrument [Line Items] Maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Amount outstanding Long-term Line of Credit Remaining borrowing capacity Line of Credit Facility, Remaining Borrowing Capacity Fixed charge ratio, Numerator Fixed Charge Ratio, Numerator Fixed Charge Ratio, Numerator Fixed Charge Ratio, Denominator Fixed Charge Ratio, Denominator Fixed Charge Ratio, Denominator Percent of borrowing base in fixed charge coverage ratio restriction Percent of Borrowing Base in Fixed Charge Coverage Ratio Restriction Percent of borrowing base where if the excess cash plus eligible cash collateral is less than this percentage of the borrowing base for 15 consecutive days, then the company must maintain a specified fixed charge coverage ratio. Weighted average shares - basic Weighted Average Number of Shares Outstanding, Basic Dilutive effect of stock options, restricted stock units, and restricted stock Weighted Average Number Diluted Shares Outstanding Adjustment Weighted average shares - diluted Weighted Average Number of Shares Outstanding, Diluted Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Antidilutive Securities [Axis] Antidilutive Securities [Axis] Antidilutive Securities, Name [Domain] Antidilutive Securities, Name [Domain] Performance-based Restricted Stock Units [Member] Performance-based Restricted Stock Units [Member] Performance-based Restricted Stock Units [Member] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Potentially dilutive securities excluded from computation of earnings per share Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Restricted Stock Units and Restricted Stock [Member] Restricted Stock and Restricted Stock Units [Member] Restricted Stock and Restricted Stock Units [Member] Unrecognized share-based compensation expense Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized Period for recognition Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition Income Statement [Abstract] NET SALES COST OF GOODS SOLD, BUYING AND OCCUPANCY COSTS Cost of Merchandise Sales, Buying and Occupancy Costs Gross profit Gross Profit OPERATING EXPENSES: Operating Expenses [Abstract] Selling, general, and administrative expenses Selling, General and Administrative Expense Other operating expense (income), net Other Operating Income (Expense), Net Total operating expenses Operating Expenses OPERATING INCOME Operating Income (Loss) INTEREST EXPENSE, NET Interest Expense OTHER INCOME, NET Other Nonoperating Income (Expense) INCOME BEFORE INCOME TAXES Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest INCOME TAX EXPENSE Income Tax Expense (Benefit) NET INCOME OTHER COMPREHENSIVE INCOME: Other Comprehensive Income (Loss), Net of Tax [Abstract] Foreign currency translation gain Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax COMPREHENSIVE INCOME Comprehensive Income (Loss), Net of Tax, Attributable to Parent EARNINGS PER SHARE: Basic (usd per share) Earnings Per Share, Basic Diluted (usd per share) Earnings Per Share, Diluted WEIGHTED AVERAGE SHARES OUTSTANDING: WEIGHTED AVERAGE SHARES OUTSTANDING ABSTRACT [Abstract] WEIGHTED AVERAGE SHARES OUTSTANDING ABSTRACT [Abstract] Basic (in shares) Diluted (in shares) Letter of Credit [Member] Letter of Credit [Member] Debt Instrument [Axis] Debt Instrument [Axis] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Stand-by LCs [Member] Stand-By LCs [Member] Stand-By LCs [Member] Letters of credit outstanding Letters of Credit Outstanding, Amount Schedule of Indefinite Lived and Finite Lived Intangible Assets [Table] Schedule of Indefinite Lived and Finite Lived Intangible Assets [Table] Schedule of Indefinite Lived and Finite Lived Intangible Assets [Table] Intangible Assets by Major Class [Axis] Intangible Assets by Major Class [Axis] Intangible Asset by Major Class [Domain] Intangible Asset by Major Class [Domain] Licensing arrangements [Member] Leases, Acquired-in-Place, Market Adjustment [Member] Intangible Assets by Major Class [Line Items] Intangible Assets by Major Class [Line Items] Finite-lived intangible assets, cost Finite-Lived Intangible Assets, Gross Intangible assets, cost Intangible Assets, Gross (Excluding Goodwill) Accumulated amortization Finite-Lived Intangible Assets, Accumulated Amortization Finite-lived intangible assets, net Finite-Lived Intangible Assets, Net Intangible assets, net Intangible Assets, Net (Excluding Goodwill) Finite-lived intangible assets, useful life Finite-Lived Intangible Asset, Useful Life Income Tax Disclosure [Abstract] Effective income tax rate Effective Income Tax Rate Reconciliation, Percent Income Tax Expense (Benefit), Continuing Operations, Adjustment of Deferred Tax (Asset) Liability Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Share-based Compensation Cost OptionsExpirationAfterRetirementOrTermination OptionsExpirationAfterRetirementOrTermination Number of days that an equity option award expires in 'PnYnMnDTnHnMnS' format after an employee retires or is terminated. Senior Notes [Member] Senior Notes [Member] Face amount of debt Debt Instrument, Face Amount Interest rate Debt Instrument, Interest Rate, Stated Percentage Offering price percentage Senior Notes Original Offering Price The original offering price of the face value of the Senior Notes. Debt outstanding Long-term Debt, Gross Redemption price percent Debt Instrument, Redemption Price, Percentage Repayments of senior debt Repayments of Senior Debt Share-Based Compensation Disclosure of Compensation Related Costs, Share-based Payments [Text Block] Non-cash loss on extinguishment of debt Gains (Losses) on Extinguishment of Debt Redemption premium Payments of Debt Extinguishment Costs Write off of Deferred Debt Issuance Cost Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Landlord funded construction, replacement cost of pre-existing property, and capitalized interest Capital Leases, Balance Sheet, Assets by Major Class, Net Lease financing obligations Capital Lease Obligations AccruedExpensesCurrent AccruedExpensesCurrent Amount reclassified to Accrued Expenses as a result of the amendment to the Times Square store lease. Capital Leases, Contingent Rental Payments Due Capital Leases, Contingent Rental Payments Due Obligations, Fair Value Disclosure Obligations, Fair Value Disclosure PeriodToExerciseLeaseOption PeriodToExerciseLeaseOption Shortest Period of days in 'PnYnMnDTnHnMnS' format that landlord had right to exercise cancellation option on lease amendment. Description of Business and Basis of Presentation [Table] Description of Business and Basis of Presentation [Table] Description of Business and Basis of Presentation [Table] Range [Axis] Range [Axis] Range [Domain] Range [Domain] Minimum [Member] Minimum [Member] Maximum [Member] Maximum [Member] Store Type [Axis] Store Type [Axis] Store Type [Axis] Store Type [Domain] Store Type [Domain] [Domain] for Store Type [Axis] Retail [Member] Retail [Member] Retail [Member] Outlet [Member] Outlet [Member] Outlet [Member] Description of Business and Basis of Presentation [Line Items] Description of Business and Basis of Presentation [Line Items] Description of Business and Basis of Presentation [Line Items] Age of target customer Age of Target Customer Age of Target Customer Number of stores Number of Stores Stores under franchise agreements Stores Under Franchise Agreements Number of stores the Company earns revenue from franchise agreements. Stores Under Franchise Agreements Closing Stores Under Franchise Agreements Closing Number of stores under franchise agreements closing Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Fair Value Measurements, Recurring and Nonrecurring [Table] Fair Value Measurements, Recurring and Nonrecurring [Table] Fair Value, Hierarchy [Axis] Fair Value, Hierarchy [Axis] Fair Value, Measurements, Fair Value Hierarchy [Domain] Fair Value Hierarchy [Domain] Level 1 [Member] Fair Value, Inputs, Level 1 [Member] Level 2 [Member] Fair Value, Inputs, Level 2 [Member] Level 3 [Member] Fair Value, Inputs, Level 3 [Member] Measurement Frequency [Axis] Measurement Frequency [Axis] Fair Value, Measurement Frequency [Domain] Fair Value, Measurement Frequency [Domain] Recurring [Member] Fair Value, Measurements, Recurring [Member] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Money market funds Cash and Cash Equivalents, Fair Value Disclosure Schedule of Shared-based Compensation Expense Schedule of Shared-based Compensation Expense [Table Text Block] Tabular disclosure of the amount of total share-based compensation cost, including the amounts attributable to each award type. Schedule of Share-based Compensation, Activity Schedule of Share-based Compensation, Activity [Table Text Block] Supplemental Options Data Supplemental Options Data [Table Text Block] Supplemental Options Data which includes weighted average grant date fair value of options granted, intrinsic value of options exercised and fair value of options vested. Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block] Preferred stock, par value (usd per share) Preferred Stock, Par or Stated Value Per Share Preferred stock, shares authorized Preferred Stock, Shares Authorized Preferred stock, shares issued Preferred Stock, Shares Issued Preferred stock, shares outstanding Preferred Stock, Shares Outstanding Common stock, par value (usd per share) Common Stock, Par or Stated Value Per Share Common stock, shares authorized Common Stock, Shares Authorized Common stock, shares issued Common Stock, Shares, Issued Common stock, shares outstanding Common Stock, Shares, Outstanding Treasury stock, shares Treasury Stock, Shares Schedule of Shared-based Compensation Expense [Table] Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] Tax benefit from share-based compensation expense Employee Service Share-based Compensation, Tax Benefit from Compensation Expense Plan Name [Axis] Plan Name [Axis] Plan Name [Domain] Plan Name [Domain] 2010 Plan [Member] 2010 Plan [Member] 2010 Plan [Member] Restricted Stock Units (RSUs) [Member] Restricted Stock Units (RSUs) [Member] Number of Shares Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Awards Unvested at beginning of period Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number Awards Granted Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period Awards Vested Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period Awards Forfeited Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period Awards Unvested at end of period Grant Date Weighted Average Fair Value Per Share Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Awards, grant date weighted average fair value at beginning of period (usd per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value Awards, grant date weighted average fair value, shares granted (usd per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Awards, grant date weighted average fair value, shares vested (usd per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Awards, grant date weighted average fair value, shares forfeited (usd per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Awards, grant date weighted average fair value at end of period (usd per share) Performance condition period Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Performance Condition Period Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Performance Condition Period Percent of grants in period Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Percent of Grants in Period Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Percent of Grants in Period Target percentage of equity awards earned Share-Based Compensation Arrangement By Share-Based Payment Award, Target Percentage Of Equity Awards Earned Over Three-Year Performance Period Share-Based Compensation Arrangement By Share-Based Payment Award, Target Percentage Of Equity Awards Earned Over Three-Year Performance Period Fair value of options vested Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value Income Taxes Income Tax Disclosure [Text Block] Use of Estimates in the Preparation of Financial Statements, Policy Use of Estimates, Policy [Policy Text Block] New Accounting Pronouncements, Policy [Policy Text Block] New Accounting Pronouncements, Policy [Policy Text Block] Segment Reporting, Policy Segment Reporting, Policy [Policy Text Block] Fair Value of Financial Instruments, Policy [Policy Text Block] Fair Value of Financial Instruments, Policy [Policy Text Block] LeaseFinancingObligations [Policy Text Block] LeaseFinancingObligations [Policy Text Block] Policy for certain lease arrangements when the Company is involved in the construction of the building. Share-based Compensation, Option and Incentive Plans Policy Share-based Compensation, Option and Incentive Plans Policy [Policy Text Block]