Document and Entity Information [Abstract] Document And Entity Information [Abstract] Statement [Table] Class of Stock [Axis] Class Of Stock [Domain] Class of Stock [Domain] Common Class A [Member] Class A Common Stock [Member] Common Class B [Member] Class B Common Stock [Member] Statement [Line Items] Document Type Amendment Flag Document Period End Date Document Fiscal Year Focus Document Fiscal Period Focus Entity Registrant Name Entity Central Index Key Current Fiscal Year End Date Entity Filer Category Entity Common Stock, Shares Outstanding Condensed Consolidated Balance Sheets [Abstract] -ASSETS ASSETS Assets, Current [Abstract] Current Assets: Cash and cash equivalents Cash and cash equivalents-end of period Cash and cash equivalents-beginning of period Cash and Cash Equivalents, at Carrying Value, Total Accounts receivable, net of allowance for doubtful accounts of $5,873 and $5,489, respectively Accounts receivable, net of allowance for doubtful accounts of $XXX and $6,934, respectively Accounts Receivable, Net, Current, Total Accounts receivable, net of allowance for doubtful accounts of $0 and $6,184, respectively Inventories Inventory, Net, Total Prepaid Expense and Other Assets, Current Prepaid expenses and other current assets Prepaid Expense and Other Assets, Current, Total Deferred income taxes Deferred Tax Assets, Net, Current, Ending Balance Deferred Tax Assets, Net, Current, Beginning Balance Deferred Tax Assets, Net, Current, Total Assets, Current Total current assets Property, plant and equipment, net Property, Plant and Equipment, Net, Ending Balance Property, Plant and Equipment, Net, Beginning Balance Total Total Goodwill Goodwill, Ending Balance Goodwill, Beginning Balance Goodwill, Total Identifiable intangibles, net Intangible Assets, Net (Excluding Goodwill), Total Other assets Other Assets, Noncurrent, Total Assets Total assets Liabilities And Stockholders Equity Abstract LIABILITIES AND SHAREHOLDERS' EQUITY Liabilities, Current [Abstract] Current Liabilities: Long-term Debt and Capital Lease Obligations, Current Current maturities of capital lease and financing obligations Long-term Debt and Capital Lease Obligations, Current, Total Current maturities of capital lease and financing obligations Accounts payable Accounts Payable, Current, Total Accrued Liabilities Current Accrued liabilities Total accrued liabilities Liabilities, Current Total current liabilities Long-term Debt and Capital Lease Obligations Capital lease obligations, net of current maturities Long-term Debt and Capital Lease Obligations, Total Deferred Income Taxes and Other Tax Liabilities, Noncurrent Deferred income taxes and tax uncertainties Liabilities Total liabilities Total Commitments And Contingencies Commitments and Contingencies Shareholders' Shareholders' Equity: Preferred stock; $0.001 par value; 5,000,000 shares authorized; none issued and outstanding Preferred Stock, Value, Issued, Ending Balance Preferred Stock, Value, Issued, Beginning Balance Preferred Stock, Value, Issued, Total Class A common stock (one vote per share); $0.001 par value; 100,000,000 shares authorized; 50,311,143 and 48,380,376 shares issued, and 46,766,657 and 44,851,997 shares outstanding, respectively Common Stock, Value, Issued, Ending Balance Common Stock, Value, Issued, Beginning Balance Common stock Common Stock, Value, Issued, Total Class B common stock (ten votes per share); $0.001 par value; 50,000,000 shares authorized; 16,875,474 and 17,925,474 shares issued and outstanding, respectively Additional Paid In Capital Label Additional Paid in Capital, Ending Balance Additional Paid in Capital, Beginning Balance Additional paid-in capital Additional Paid in Capital, Total Retained Earnings Accumulated Deficit Retained Earnings (Accumulated Deficit), Ending Balance Retained Earnings (Accumulated Deficit), Beginning Balance Retained earnings Retained Earnings (Accumulated Deficit), Total Accumulated Other Comprehensive Income Loss Net Of Tax Accumulated other comprehensive loss -Accumulated Other Comprehensive Income (Loss), Net of Tax, Ending Balance -Accumulated Other Comprehensive Income (Loss), Net of Tax, Beginning Balance Accumulated other comprehensive loss -Accumulated Other Comprehensive Income (Loss), Net of Tax, Total Accumulated other comprehensive loss Class A treasury stock, at cost, 2,635,709 and 2,620,659 shares, respectively Class A treasury stock, at cost, 4,761,999 and 4,722,706 shares, respectively Class A treasury stock, at cost, XX and 5,342,091 shares, respectively Treasury Stock, Value, Ending Balance Treasury Stock, Value, Beginning Balance Class A treasury stock, at cost, 3,528,379 and 2,620,659 shares, respectively Share repurchased, value Stockholders' Equity Attributable to Parent Balance, Value Balance, Value Total shareholders' equity Liabilities and Stockholders' Equity Total liabilities and shareholders' equity Accounts receivable, allowance for doubtful accounts Allowance for Doubtful Accounts Receivable, Current, Ending Balance Allowance for Doubtful Accounts Receivable, Current, Beginning Balance Preferred stock, par value 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 Issued, Total Preferred stock, shares outstanding Preferred Stock, Shares Outstanding, Ending Balance Preferred Stock, Shares Outstanding, Beginning Balance Preferred stock, shares outstanding Common stock, voting rights Common stock voting rights, per share Common stock, par value Common stock, shares authorized Common stock, shares issued Common Stock, Shares, Issued, Total Common stock, shares outstanding Common Stock, Shares, Outstanding, Ending Balance Common Stock, Shares, Outstanding, Beginning Balance Class A treasury stock, shares Treasury Stock, Shares, Ending Balance Treasury Stock, Shares, Beginning Balance Share repurchased, shares Condensed Consolidated Statements Of Income And Comprehensive Income [Abstract] Net sales Net sales Sales Revenue, Net, Total Revenue Cost of goods and services sold Cost of goods sold Cost of Goods and Services Sold, Total Gross Profit Gross profit Gross profit Operating expenses Operating expenses Operating Expenses, Total Operating Income (Loss) Income from operations Income from operations Other (Expense) Income: Other (Expense) Income: Other (Expense) Income: Interest expense Interest expense Interest Expense, Total Interest income Other expense, net Other expense, net Other Nonoperating Income (Expense), Total Other expense, net Nonoperating Income (Expense) Total other expense Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Cumulative Effects of Changes in Accounting Principles, Noncontrolling Interest Income before provision for income taxes Provision for income taxes Total Net income Net income, as reported Net income Net income as reported Net Income Per Share [Abstract] Per Share Information: Net income per common share: Earnings Per Share, Basic, Total Basic [ESP] Basic Earnings Per Share, Basic, Total Net income per share, Basic Earnings Per Share, Diluted, Total Diluted Earnings Per Share, Diluted, Total Net income per share, Diluted Weighted Average Number of Shares Outstanding, Diluted [Abstract] Weighted average shares used in computing net income per common share: Basic Weighted average shares outstanding for basic net income per share Weighted Average Number of Shares Outstanding, Basic, Total Diluted Weighted average shares outstanding for diluted net income per share Weighted average shares outstanding for diluted net income per share Common Stock, Dividends, Per Share, Declared Cash dividend declared per common share Consolidated Statements Of Comprehensive Income [Abstract] Cumulative translation adjustment Cumulative foreign currency translation adjustment Cumulative translation adjustment Foreign currency translation adjustments Other Comprehensive Income, Foreign Currency Transaction and Translation Adjustment, Net of Tax, Total Cumulative foreign currency translation adjustment Comprehensive Income, Net of Tax, Attributable to Parent Comprehensive income Comprehensive income Condensed Consolidated Statement Of Shareholders' Equity [Abstract] Statement, Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Parent [Member] Parent [Member] Common Stock [Member] Common Stock [Member] Additional Paid In Capital [Member] Additional Paid-In Capital [Member] Retained Earnings [Member] Retained Earnings [Member] Accumulated Other Comprehensive Income [Member] Accumulated Other Comprehensive Loss [Member] Treasury Stock [Member] Class A Treasury Stock [Member] Shares, Issued Balance, Shares Balance, Shares Stock Issued During Period, Shares, Other Exchange of Class B common stock for Class A common stock, Shares Stock Issued During Period, Value, Stock Options Exercised, Net of Tax Benefit (Expense) Exchange of Class B common stock for Class A common stock Stock Issued During Period Shares Stock Options Exercised Exercised, Options Exercise of common stock options, including income tax benefits of $3,321, Shares Exercised, Options Exercise of common stock options, including income tax benefits of $2,532, Value Exercise of common stock options, including income tax benefits of $3,321, Value Stock Issued During Period Shares Employee Stock Purchase Plans Common stock issued under associate stock purchase plan, Shares Common stock issued under associate stock purchase plan, shares Common stock purchased by associates Common stock issued under associate stock purchase plan, Value Stock Issued During Period, Shares, Share-based Compensation Grant of restricted common stock, net of cancellations, Shares Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures, Total Stock-based compensation [SE] Stock-based compensation, Value Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition, Total Stock-based compensation Purchase of treasury stock, Shares Class A common stock shares repurchased Purchase of treasury stock, Shares Shares repurchased, Shares Purchase of treasury stock [SE] Purchase of treasury stock, Value Class A common stock shares repurchase amount Purchase of treasury stock, Value Shares repurchased, Value Cash dividends paid Cash dividends paid on common stock Cash dividends paid on Issuance of dividend equivalent units Issuance of dividend equivalent units on Restricted Stock Units outstanding Adjustments to Additional Paid in Capital, Income Tax Benefit from Share-based Compensation Exercise of common stock options, income tax benefits Condensed Consolidated Statements Of Cash Flows [Abstract] Cash Flows from Operating Activities: Cash Flows from Operating Activities: Adjustments to reconcile net income to net cash provided by operating activities: Depreciation and amortization Depreciation, Depletion and Amortization, Total Share Based Compensation Stock-based compensation Share-based Compensation, Total Stock-based compensation expense Gain (Loss) on Disposition of Property Loss on disposal of property, plant, and equipment Gain on sale of property, plant and equipment Gain (Loss) on Disposition of Property, Total Provision for doubtful accounts Deferred Income Taxes And Tax Credits Deferred income taxes and tax uncertainties Deferred Income Taxes and Tax Credits, Total Excess Tax Benefit From Share Based Compensation Operating Activities Excess tax benefits from stock-based compensation Excess tax benefits from stock-based compensation Changes in operating assets and liabilities, net of business acquired: Changes in operating assets and liabilities, net of amounts associated with business acquired: Accounts receivable Accounts receivable Increase Decrease In Inventories Inventories Inventories Increase (Decrease) in Inventories, Total Increase Decrease In Prepaid Deferred Expense And Other Assets Prepaid expenses and other current assets Prepaid expenses and other current assets Increase (Decrease) in Prepaid, Deferred Expense and Other Assets, Total Increase Decrease In Other Operating Assets Other assets Other assets Increase (Decrease) in Other Operating Assets, Total Accounts payable and accrued liabilities Accounts payable and accrued liabilities Increase (Decrease) in Accounts Payable and Accrued Liabilities, Total Total adjustments Total adjustments Net cash provided by operating activities Net cash provided by operating activities Cash Flows from Investing Activities: Cash Flows from Investing Activities: Expenditures for property, plant and equipment Expenditures for property, plant and equipment Payments to Acquire Property, Plant, and Equipment, Total Payments to Acquire Businesses, Net of Cash Acquired Cash used in business acquisitions, net of cash received Cash used in business acquisition, net of cash received Payments to Acquire Businesses, Net of Cash Acquired, Total Net cash used in investing activities Net cash used in investing activities Cash Flows from Financing Activities: Cash Flows from Financing Activities: Purchases of treasury stock Purchases of treasury stock Purchases of treasury stock Payment of cash dividends Payments of cash dividends Payments of Dividends, Total Repayments of Debt and Capital Lease Obligations Payments on capital lease and financing obligations Payments on capital lease obligations and vendor financing Excess tax benefits from stock-based compensation Excess tax benefits from stock-based compensation Proceeds from sale of Class A common stock in connection with associate stock purchase plan Proceeds from sale of Class A common stock in connection with associate stock purchase plan Proceeds from exercise of Class A common stock options Proceeds from Issuance of Debt Borrowings under financing obligations Net cash used in financing activities Net cash used in financing activities Effect of foreign exchange rate changes on cash and cash equivalents Effect of Exchange Rate on Cash and Cash Equivalents, Total Net increase in cash and cash equivalents Net increase in cash and cash equivalents Supplemental Disclosure of Cash Flow Information: Supplemental Disclosure of Cash Flow Information: Cash paid for income taxes Cash paid for income taxes Cash paid for interest Cash paid for interest Interest Paid, Total Basis Of Presentation [Abstract] Business Description and Basis of Presentation [Text Block] Basis Of Presentation Earnings Per Share (Text Block) Net Income Per Share Stock-Based Compensation [Abstract] Disclosure Of Compensation Related Costs Share Based Payments (Text Block) Stock-Based Compensation Associate Benefit Plans Fair Value [Abstract] Fair Value Disclosures (Text Block) Fair Value Debt And Capital Lease Obligations [Abstract] Debt Disclosure (Text Block) Debt And Capital Lease Obligations Shareholders' Equity [Abstract] Stockholders' Equity Note Disclosure [Text Block] Shareholders' Equity Product Warranties [Abstract] Product Warranty Disclosure [Text Block] Product Warranties Income Taxes [Abstract] Income Tax Disclosure (Text Block) Income Taxes Legal Proceedings [Abstract] Legal Matters and Contingencies [Text Block] Legal Proceedings Recently Issued Accounting Standards [Abstract] New Accounting Pronouncements and Changes in Accounting Principles [Text Block] Recently Issued Accounting Standards Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Basic And Diluted Net Income Per Common Share Under The Two-Class Method Basic And Diluted Net Income Per Common Share Under The Two-Class Method Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] Fair Value Of Options Granted Estimated Using Black-Scholes Option Pricing Model Assumptions Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block] Summary Of Stock Options Schedule of Nonvested Restricted Stock Units Activity [Table Text Block] Non-Vested Restricted Share Award Activity Non-Vested Restricted Share Award Activity Distributed Earnings Less: Distributed net income available to participating securities Distributed Earnings, Total Add: Distributed net income available to participating securities Undistributed Earnings Allocated to Participating Securities Less: Undistributed net income available to participating securities Add: Undistributed net income allocated to participating securities Add: Undistributed net income allocated to participating securities Less: Undistributed net income available to participating securities Net Income (Loss) Available to Common Stockholders, Basic Undistributed and distributed net income available to common shareholders, basic Undistributed and distributed net income available to common shareholders, basic Undistributed Net Income Reallocated To Participating Securities Undistributed Net Income Reallocated To Participating Securities Less: Undistributed net income reallocated to participating securities Less: Undistributed net income reallocated to participating securities Net Income (Loss) Available to Common Stockholders, Diluted Undistributed and distributed net income available to common shareholders, diluted Undistributed and distributed net income available to common shareholders, diluted Weighted Average Number Diluted Shares Outstanding Adjustment Weighted Average Number Diluted Shares Outstanding Adjustment, Total Effect of dilutive securities Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Antidilutive stock options Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation Arrangement by Share-based Payment Award, Award Type and Plan Name [Axis] Share Based Compensation Arrangements By Share Based Payment Award Award Type And Plan Name [Domain] Share-based Compensation Arrangements by Share-based Payment Award, Award Type and Plan Name [Domain] Stock Options [Member] Stock Options [Member] Restricted Stock [Member] Restricted Stock [Member] Restricted Stock Units R S U [Member] Restricted Stock Unit Agreement [Member] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Employee Service Share-based Compensation, Tax Benefit from Compensation Expense Stock-based compensation expense, tax benefit Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value Weighted-average grant-date fair values of the stock options granted Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Total Intrinsic Value Total intrinsic value of options exercised Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized Unrecognized share-based compensation cost Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Total Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition Unrecognized share-based compensation weighted average period Number of shares granted Number of shares granted Granted, Options Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures, Total Granted, Shares Number Of Vesting Installments Number Of Vesting Installments Number of vesting installments Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period Granted, Shares Number of shares granted from RSU Agreement 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 Weighted-average fair value of RSU granted Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number Non-vested restricted share awards at December 1, 2012, Shares Non-vested restricted share awards at September 1, 2012, Shares Number of unvested RSU outstanding Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value Non-vested restricted share awards at December 1, 2012, 2012, Weighted-Average Grant-Date Fair Value Non-vested restricted share awards at September 1, 2012, Weighted-Average Grant-Date Fair Value Weighted-average fair value of RSU outstanding Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term Expected life Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate Risk-free interest rate 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, Expected Dividend Rate Expected dividend yield Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number Outstanding on December 1, 2012, Options Outstanding on September 1, 2012, Options Number of Options Outstanding at August 27, 2011 Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number Exercisable on December 1, 2012, Options Number of Options Exercisable at August 27, 2011