Accounting Policies [Abstract] Basis of Accounting Basis of Accounting, Policy [Policy Text Block] Principles of Consolidation Consolidation, Policy [Policy Text Block] Fiscal Periods Fiscal Period, Policy [Policy Text Block] Revenue Recognition and Accounts Receivable Revenue Recognition And Accounts Receivable [Policy Text Block] Revenue Recognition And Accounts Receivable [Policy Text Block] Recently Issued Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Revenue from Contract with Customer [Abstract] Revenue, Initial Application Period Cumulative Effect Transition [Table] Revenue, Initial Application Period Cumulative Effect Transition [Table] Initial Application Period Cumulative Effect Transition [Axis] Initial Application Period Cumulative Effect Transition [Axis] Initial Application Period Cumulative Effect Transition [Domain] Initial Application Period Cumulative Effect Transition [Domain] ASC 606 Adjustments Difference between Revenue Guidance in Effect before and after Topic 606 [Member] Before ASC 606 Calculated under Revenue Guidance in Effect before Topic 606 [Member] Adjustments for New Accounting Pronouncements [Axis] Adjustments for New Accounting Pronouncements [Axis] Type of Adoption [Domain] Type of Adoption [Domain] Accounting Standards Update 2014-09 Accounting Standards Update 2014-09 [Member] Revenue, Initial Application Period Cumulative Effect Transition [Line Items] Revenue, Initial Application Period Cumulative Effect Transition [Line Items] Accounts receivable, net Accounts Receivable, Net, Current Inventories Inventory, Net Income taxes receivable Income Taxes Receivable, Current Total current assets Assets, Current Deferred income taxes Deferred Income Tax Assets, Net Total assets Assets Other accrued liabilities Other Accrued Liabilities, Current Total current liabilities Liabilities, Current Total liabilities Liabilities Retained earnings Retained Earnings (Accumulated Deficit) Total shareholders’ equity Stockholders' Equity Attributable to Parent Total liabilities and shareholders’ equity Liabilities and Equity Property, Plant and Equipment [Abstract] Schedule of Impaired Intangible Assets Schedule of Impaired Intangible Assets [Table Text Block] Schedule of Investments [Abstract] Investments Investment Holdings, Schedule of Investments [Text Block] Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Statement of Comprehensive Income [Abstract] Net income (loss) Net Income (Loss) Attributable to Parent Unrealized (loss) gain on available-for-sale debt investments Other Comprehensive Income (Loss), Securities, Available-for-Sale, Unrealized Holding Gain (Loss) Arising During Period, after Tax Cumulative translation adjustment Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, before Tax, Portion Attributable to Parent Comprehensive income (loss), net of tax Comprehensive Income (Loss), Net of Tax, Attributable to Parent Disclosure of Compensation Related Costs, Share-based Payments [Abstract] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Award Type [Axis] Award Type [Axis] Equity Award [Domain] Equity Award [Domain] Time-based Restricted Stock Units [Member] Time Based Restricted Stock Units [Member] Time-based restricted stock units member. Performance-based Restricted Stock Units [Member] Performance Based Restricted Stock Units [Member] Performance-based restricted stock units member. Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Number of Units Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Nonvested units outstanding, beginning balance Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number Granted, Number of Units Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period Vested, Number of Units Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period Forfeited, Number of Units Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period Nonvested units outstanding, ending balance Weighted- Average Grant Date Fair Value (per unit) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Weighted-Average Grant Date Fair Value (per unit), beginning balance Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value Granted, Weighted-Average Grant Date Fair Value (per unit) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Vested, Weighted-Average Grant Date Fair Value (per unit) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Forfeited, Weighted-Average Grant Date Fair Value (per unit) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Weighted-Average Grant Date Fair Value (per unit), ending balance Retirement Benefits [Abstract] Stock-Based Compensation Pension and Other Postretirement Benefits Disclosure [Text Block] Organization, Consolidation and Presentation of Financial Statements [Abstract] Lessee, Lease, Description [Table] Lessee, Lease, Description [Table] Balance Sheet Location [Axis] Balance Sheet Location [Axis] Balance Sheet Location [Domain] Balance Sheet Location [Domain] Other accrued liabilities [Member] Other Current Liabilities [Member] Long-term liabilities [Member] Liabilities, Noncurrent [Member] Liabilities, Noncurrent [Member] Lessee, Lease, Description [Line Items] Lessee, Lease, Description [Line Items] Number of reportable segments Number of Reportable Segments Number of full-line stores Number Of Full Line Stores Number Of Full Line Stores Number of factory outlet stores Number Of Factory Outlet Stores Number Of Factory Outlet Stores Number of specialty retail locations Number of Specialty Retail Locations Number of Specialty Retail Locations Allowance for doubtful accounts receivable Allowance for Doubtful Accounts Receivable Deferred rent liability Deferred Rent Liability Deferred Rent Liability Deferred lease credit liability Deferred Rent Credit Revenue from Contracts with Customers Revenue from Contract with Customer [Text Block] Restructuring and Related Activities [Abstract] Schedule of Restructuring and Related Costs [Table] Schedule of Restructuring and Related Costs [Table] Segments [Axis] Segments [Axis] Segments [Domain] Segments [Domain] Direct Segment Direct [Member] Direct [Member] Restructuring Plan [Axis] Restructuring Plan [Axis] Restructuring Plan [Domain] Restructuring Plan [Domain] Vision 20/20 Vision 20/20 [Member] Vision 20/20 [Member] Restructuring Cost and Reserve [Line Items] Restructuring Cost and Reserve [Line Items] Restructuring charges incurred Restructuring and Related Cost, Incurred Cost Restructuring charges incurred, net of tax Restructuring and Related Cost, Cost Incurred to Date, Net of Tax Restructuring and Related Cost, Cost Incurred to Date, Net of Tax Cash payments Payments for Restructuring Restructuring, settlement and impairment provisions Restructuring, Settlement and Impairment Provisions Severance charges Severance Costs Lease termination charge Gain (Loss) on Contract Termination Debt Disclosure [Abstract] Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Related Party [Axis] Related Party [Axis] Related Party [Domain] Related Party [Domain] Subsidiaries [Member] Subsidiaries [Member] Range [Axis] Range [Axis] Range [Domain] Range [Domain] Minimum [Member] Minimum [Member] Maximum [Member] Maximum [Member] Credit Facility [Axis] Credit Facility [Axis] Credit Facility [Domain] Credit Facility [Domain] Revolving Credit Facility [Member] Revolving Credit Facility [Member] Line of Credit [Member] Line of Credit [Member] Debt Instrument [Axis] Debt Instrument [Axis] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] New Credit Agreement [Member] New Credit Agreement [Member] New Credit Agreement [Member] Credit Agreement [Member] Credit Agreement [Member] Credit Agreement [Member] Variable Rate [Axis] Variable Rate [Axis] Variable Rate [Domain] Variable Rate [Domain] Base Rate [Member] Base Rate [Member] London Interbank Offered Rate (LIBOR) [Member] London Interbank Offered Rate (LIBOR) [Member] Adjusted London Interbank Offered Rate (LIBOR) [Member] Adjusted London Interbank Offered Rate (LIBOR) [Member] Adjusted London Interbank Offered Rate (LIBOR) [Member] Debt Instrument [Line Items] Debt Instrument [Line Items] Maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Increase (decrease) in aggregate credit facility principal amount Line of Credit Facility, Increase (Decrease), Net Basis spread on variable rate Debt Instrument, Basis Spread on Variable Rate Unused capacity, commitment fee percentage Line of Credit Facility, Unused Capacity, Commitment Fee Percentage Debt instrument, fixed charge coverage ratio Debt Instrument, Fixed Charge Coverage Ratio Debt Instrument, Fixed Charge Coverage Ratio Available borrowings Line of Credit Facility, Remaining Borrowing Capacity Summary of Restricted-Stock Awards and Restricted-Stock Units Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block] Impairment charges Asset Impairment Charges Fair Value Disclosures [Abstract] Fair Value Measurements, Recurring and Nonrecurring [Table] Fair Value Measurements, Recurring and Nonrecurring [Table] Investment Type [Axis] Investment Type [Axis] Investments [Domain] Investments [Domain] Certificate of deposit Certificates of Deposit [Member] Non-U.S. corporate debt securities Debt Security, Corporate, Non-US [Member] U.S. corporate debt securities Debt Security, Corporate, US [Member] Municipal securities Municipal Notes [Member] U.S. treasury securities US Treasury Securities [Member] Commercial paper Commercial Paper [Member] U.S. asset-backed securities Asset-backed Securities [Member] Non-U.S. asset-backed securities Asset-backed Securities, Securitized Loans and Receivables [Member] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Level 1 Fair Value, Inputs, Level 1 [Member] Level 2 Fair Value, Inputs, Level 2 [Member] Level 3 Fair Value, Inputs, Level 3 [Member] Measurement Frequency [Axis] Measurement Frequency [Axis] Fair Value, Measurement Frequency [Domain] Fair Value, Measurement Frequency [Domain] Fair Value, Measurements, Recurring 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] Cash equivalents Cash and Cash Equivalents, Fair Value Disclosure Short-term investments Short-term Investments Long-term investments Long-term Investments Income Statement Location [Axis] Income Statement Location [Axis] Income Statement Location [Domain] Income Statement Location [Domain] Selling, General and Administrative Expenses [Member] Selling, General and Administrative Expenses [Member] Cost of Sales [Member] Cost of Sales [Member] Indirect Segment Indirect [Member] Indirect [Member] Corporate Segment [Member] Corporate Segment [Member] Strategic consulting charges Consulting Costs Consulting Costs Inventory-related charges Inventory Related Charges Inventory Related Charges Other charges Other Restructuring Costs Total Restructuring and other charges, net of tax Restructuring Settlement And Impairment Provisions, Net Of Tax Restructuring Settlement And Impairment Provisions, Net Of Tax Revenue from Contracts with Customer [Abstract] Revenue from Contracts with Customer [Abstract] Deferred income taxes Deferred Income Tax Expense (Benefit) Accounts receivable Increase (Decrease) in Accounts Receivable Inventories Increase (Decrease) in Inventories Income taxes Increase (Decrease) in Income Taxes Payable, Net of Income Taxes Receivable Accrued and other liabilities Increase (Decrease) in Accrued Liabilities and Other Operating Liabilities Earnings Per Share [Abstract] Components of Basic and Diluted Net Income Per Share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Debt Debt Disclosure [Text Block] Income Tax Disclosure [Abstract] Income Taxes Income Tax Disclosure [Text Block] Subsequent Events [Abstract] Subsequent Event [Table] Subsequent Event [Table] Share Repurchase Program [Axis] Share Repurchase Program [Axis] Share Repurchase Program [Domain] Share Repurchase Program [Domain] The 2015 Share Repurchase Program [Member] The 2015 Share Repurchase Program [Member] The 2015 Share Repurchase Program [Member] Subsequent Event Type [Axis] Subsequent Event Type [Axis] Subsequent Event Type [Domain] Subsequent Event Type [Domain] Subsequent Event [Member] Subsequent Event [Member] Subsequent Event [Line Items] Subsequent Event [Line Items] Authorized amount under share repurchase program Stock Repurchase Program, Authorized Amount Earnings Per Share Earnings Per Share [Text Block] Effective income tax rate Effective Income Tax Rate Reconciliation, Percent Fair Value Measurements of Investments Fair Value, Assets Measured on Recurring Basis [Table Text Block] Compensation Related Costs Share Based Payments Disclosure [Table] Compensation Related Costs Share Based Payments Disclosure [Table] Compensation Related Costs Share Based Payments Disclosure [Table] Title of Individual [Axis] Title of Individual [Axis] Relationship to Entity [Domain] Relationship to Entity [Domain] Non-Employee Director [Member] Non-Employee Director [Member] Non-Employee Director [Member] Plan Name [Axis] Plan Name [Axis] Plan Name [Domain] Plan Name [Domain] 2010 Equity and Incentive Plan [Member] Two Thousand And Ten Equity And Incentive Plan [Member] Two thousand and ten equity and incentive plan Restricted-Stock Units [Member] Restricted Stock Units (RSUs) [Member] Issuance of common stock shares Common Stock, Capital Shares Reserved for Future Issuance Restricted-stock awards/units granted in period Restricted-stock awards/units with an aggregate grant-date fair value Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options With Aggregate Grant Date Fair Value Share based compensation arrangement by share based payment award equity instruments other than options with aggregate grant date fair value. Stock unit vesting and settlement ratio to common shares Share-based Compensation Arrangement by Share-based Payment Award, Stock Unit Vesting and Settlement Ratio Share-based Compensation Arrangement by Share-based Payment Award, Stock Unit Vesting and Settlement Ratio Restricted stock units vesting period, years Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period Total unrecognized compensation cost, net of estimated forfeitures, related to nonvested restricted stock units Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Share-based Awards Other than Options Weighted average period to recognize the total unrecognized compensation cost Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition Investment Holdings [Table] Investment Holdings [Table] Investment Holdings [Line Items] Investment Holdings [Line Items] Unrealized (loss) gain on available-for-sale investments Other Comprehensive Income (Loss), Securities, Available-for-sale, Adjustment, before Tax Equity [Abstract] Common Stock Shareholders' Equity and Share-based Payments [Text Block] Net revenues Revenues Cost of sales Cost of Goods and Services Sold Gross profit Gross Profit Operating income Operating Income (Loss) Income before income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Income tax expense Income Tax Expense (Benefit) Segment Reporting [Abstract] Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Consolidation Items [Axis] Consolidation Items [Axis] Consolidation Items [Domain] Consolidation Items [Domain] Operating Segments [Member] Operating Segments [Member] Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Segment net revenues Segment operating income Segment Operating Income Segment operating income. Unallocated corporate expenses Segment Reporting Unallocated Corporate Expenses Segment reporting unallocated corporate expenses. Operating income (loss) Number of operating segments Number of Operating Segments Schedule of New Accounting Pronouncements and Changes in Accounting Principles Schedule of New Accounting Pronouncements and Changes in Accounting Principles [Table Text Block] Schedule of Disaggregation of Revenue Disaggregation of Revenue [Table Text Block] Document And Entity Information [Abstract] Document and Entity Information [Abstract] Document Type Document Type Amendment Flag Amendment Flag Document Period End Date Document Period End Date Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Trading Symbol Trading Symbol 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 Entity Emerging Growth Company Entity Emerging Growth Company Entity Small Business Company Entity Small Business Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Statement of Cash Flows [Abstract] Cash flows from operating activities Net Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to reconcile net income (loss) to net cash provided by operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Depreciation of property, plant, and equipment Depreciation, Depletion and Amortization Provision for doubtful accounts Provision for Doubtful Accounts Stock-based compensation Share-based Compensation Cash gain on investments Gain (Loss) on Investments Other non-cash charges, net Other Noncash Income (Expense) Changes in assets and liabilities: Increase (Decrease) in Operating Capital [Abstract] Prepaid expenses and other assets Increase (Decrease) in Prepaid Expense and Other Assets Accounts payable Increase (Decrease) in Accounts Payable Net cash 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] Purchases of property, plant, and equipment Payments to Acquire Property, Plant, and Equipment Purchases of investments Payments to Acquire Short-term Investments Proceeds from maturities and sales of investments Proceeds from Sale and Maturity of Marketable Securities 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] Tax withholdings for equity compensation Shares Surrendered For Employee Tax Withholdings Shares surrendered for employee tax withholdings. Repurchase of common stock Payments for Repurchase of Common Stock Payments of debt-issuance costs Payments of Debt Issuance Costs Net cash used in financing activities Net Cash Provided by (Used in) Financing Activities Effect of exchange rate changes on cash and cash equivalents 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 Supplemental disclosure of cash flow information Supplemental Cash Flow Information [Abstract] Cash paid for income taxes, net Income Taxes Paid, Net Supplemental disclosure of non-cash activity Other Noncash Investing and Financing Items [Abstract] Repurchase of common stock Repurchase of Common Stock Incurred but Not yet Paid Repurchase of Common Stock Incurred but Not yet Paid Purchases of property, plant, and equipment Capital Expenditures Incurred but Not yet Paid Vision 20/20 Restructuring and Other Charges Other Income and Other Expense Disclosure [Text Block] Segment Reporting Segment Reporting Disclosure [Text Block] Schedule of Net Revenues and Operating Income Information for Reportable Segments Schedule of Segment Reporting Information, by Segment [Table Text Block] Numerator: Net Income (Loss) Attributable to Parent [Abstract] Net income (loss) Denominator: Weighted Average Number of Shares Outstanding Reconciliation [Abstract] Weighted-average number of common shares (basic) Weighted Average Number of Shares Outstanding, Basic Dilutive effect of stock-based awards Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements Weighted-average number of common shares (diluted) Weighted Average Number of Shares Outstanding, Diluted Net income (loss) per share: Earnings Per Share, Basic and Diluted [Abstract] Basic (in dollars per share) Earnings Per Share, Basic Diluted (in dollars per share) Earnings Per Share, Diluted Restructuring charges Restructuring and Related Costs [Table Text Block] Statement of Financial Position [Abstract] Assets Assets [Abstract] Current assets: Assets, Current [Abstract] Cash and cash equivalents Prepaid expenses and other current assets Other Assets, Current Total current assets Property, plant, and equipment, net Property, Plant and Equipment, Net Other assets Other Assets, Noncurrent Total assets Liabilities and Shareholders’ Equity Liabilities and Equity [Abstract] Current liabilities: Liabilities, Current [Abstract] Accounts payable Accounts Payable, Current Accrued employment costs Employee-related Liabilities, Current Income taxes payable Accrued Income Taxes, Current Total current liabilities Long-term liabilities Liabilities, Noncurrent Total liabilities Commitments and contingencies Commitments and Contingencies Shareholders’ equity: Stockholders' Equity Attributable to Parent [Abstract] Preferred stock; 5,000 shares authorized, no shares issued or outstanding Preferred Stock, Value, Issued Common stock, without par value; 200,000 shares authorized, 41,282 and 41,102 shares issued and 34,856 and 35,459 shares outstanding, respectively Common Stock, Value, Issued Additional paid-in-capital Additional Paid in Capital Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax Treasury stock Treasury Stock, Value Total shareholders’ equity Total liabilities and shareholders’ equity Unearned revenue, current Contract with Customer, Liability, Current Accounts receivable from contracts with customers, net of allowances Contract with Customer, Asset, Accounts Receivable, Net Contract with Customer, Asset, Accounts Receivable, Net Provision for doubtful accounts Contract with Customer, Provision For Doubtful Accounts Contract with Customer, Provision For Doubtful Accounts Subsequent Event Subsequent Events [Text Block] Class of Treasury Stock [Table] Class of Treasury Stock [Table] Equity, Class of Treasury Stock [Line Items] Equity, Class of Treasury Stock [Line Items] Treasury stock, shares, acquired (in shares) Treasury Stock, Shares, Acquired Average price per share of shares acquired (in dollars per share) Treasury Stock Acquired, Average Cost Per Share Treasury stock, value, acquired, cost method Treasury Stock, Value, Acquired, Cost Method Remaining authorized repurchase amount Stock Repurchase Program, Remaining Authorized Repurchase Amount Number of shares held in treasury Treasury Stock, Shares Value of treasury stock Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Timing of Transfer of Good or Service [Axis] Timing of Transfer of Good or Service [Axis] Timing of Transfer of Good or Service [Domain] Timing of Transfer of Good or Service [Domain] Transferred At Point In Time Transferred at Point in Time [Member] Transferred Over Time Transferred over Time [Member] Product and Service [Axis] Product and Service [Axis] Product and Service [Domain] Product and Service [Domain] Bags Bags [Member] Bags [Member] Travel Travel [Member] Travel [Member] Accessories Accessories [Member] Accessories [Member] Home Home [Member] Home [Member] Other Other Products [Member] Other Products [Member] Disaggregation of Revenue [Line Items] Disaggregation of Revenue [Line Items] Total net revenues Revenue from Contract with Customer, Excluding Assessed Tax Cyber security insurance coverage limit Cyber Security Insurance, Coverage Limit Cyber Security Insurance, Coverage Limit Cyber security insurance deductible Cyber Security Insurance, Deductible Cyber Security Insurance, Deductible 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, without par value (in dollars per share) 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 Common Stock, Shares, Outstanding Description of the Company and Basis of Presentation Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Property, Plant, and Equipment Property, Plant and Equipment [Table Text Block] Income Statement [Abstract] Selling, general, and administrative expenses Selling, General and Administrative Expense Other income Other Operating Income Interest income, net Interest Income (Expense), Nonoperating, Net Income (loss) before income taxes Net income (loss) Basic weighted-average shares outstanding Diluted weighted-average shares outstanding Basic net income per share (in dollars per share) Diluted net income per share (in dollars per share) Summary of Investments Summary Investment Holdings [Table Text Block] Fair Value of Financial Instruments Fair Value Disclosures [Text Block]