Accounts Payable Current Accounts payable Accrued Income Taxes Current Accrued income taxes Accrued license fees current. Accrued License Fees Current Accrued license fees Accrued license fees noncurrent. Accrued License Fees Non Current Licensed intangibles payable Accrued Professional Fees Current Accrued professional fees Accrued Royalties Current Accrued royalties Accumulated Amortization Deferred Finance Costs Debt issuance costs, net of accumulated amortization Accumulated Other Comprehensive Income Loss Net Of Tax Accumulated other comprehensive loss Acquired Finite Lived Intangible Assets Weighted Average Useful Life Acquired intangibles, Weighted-Average Useful Life Amount, after amortization of acquired intangible assets, excluding financial assets and goodwill, lacking physical substance with a finite life. Acquired Intangible Assets Net Acquired intangibles, Net Additional Financial Information Disclosure [Text Block] Supplemental Financial Statement Data Additional Paid In Capital Additional paid-in capital Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities [Abstract] Adjustments required to reconcile net income/(loss) to net cash provided by operating activities: Allocated Share Based Compensation Expense Total stock-based compensation Allowance For Doubtful Accounts Receivable Current Allowance for doubtful accounts Amendment Flag Amendment Flag Americas. Americas [Member] Americas Amortization expense of licensed intangibles. Amortization Expense Of Licensed Intangibles Amortization expense of licensed intangibles Amortization of license agreements Amortization Of Debt Discount Premium Amortization of debt discount on convertible debt Interest expense - debt discount amortization Amortization Of Intangible Assets Amortization of acquired intangible assets Amortization of intangibles Amortization Of Intangible Assets By Income Statement Location [Axis] Amortization Of Intangible Assets By Income Statement Location [Axis] Amortization Of Intangible Assets By Income Statement Location [Axis] Amortization Of Intangible Assets By Income Statement Location [Domain] Amortization Of Intangible Assets By Income Statement Location [Domain] Amortization Of Intangible Assets By Income Statement Location [Domain] Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount Anti-dilutive shares excluded from the calculation of diluted net loss per share Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Asia Pacific [Member] Asia Pacific [Member] Asia Pacific Assets Total assets Assets [Abstract] ASSETS Assets Current Total current assets Assets Current [Abstract] Current Assets Assets Fair Value Disclosure Assets, Fair Value Assets at fair value Assets Fair Value Disclosure [Abstract] Assets Award Type [Axis] Award Type [Axis] Balance sheet information related to convertible senior notes. Balance Sheet Information Related To Convertible Senior Notes Table [Text Block] Balance Sheet Information Related to Convertible Senior Notes Base rate facility, interest range, base rate plus one point two five percent. Base Rate Facility Interest Range Base Rate Plus One Point Two Five Percent [Member] Base rate plus 1.25% Base revenue projections Base Revenue Projections [Member] Base Revenue Projections Basis Of Presentation And Significant Accounting Policies [Text Block] Basis of Presentation and Significant Accounting Policies Basis of presentation. Basis Of Presentation Policy [Text Block] Basis of Presentation Bonus Percentage Bonus Percentage Bonus percentage expected to pay Business Acquisition Acquiree [Domain] Business Acquisition, Acquiree [Domain] Business Acquisition [Axis] Business Acquisition [Axis] Business acquisition, contingent consideration, at fair value, additions. Business Acquisition Contingent Consideration At Fair Value Additions Additions Business Acquisition Contingent Consideration At Fair Value Current Ending Balance Beginning Balance Contingent consideration Business Acquisition Contingent Consideration Reduction Of Liability Due To Elimination of Contingency Business Acquisition Contingent Consideration Reduction Of Liability Due To Elimination Of Contingency Contingent Consideration Liability Reduction Business Acquisition Contingent Consideration Subject to Reduction Business Acquisition Contingent Consideration Subject To Reduction Contingent Consideration Liability Business acquisition, contingent consideration transferred upon close of acquisition, escrow deposit. Business Acquisition Contingent Consideration Transferred Upon Close Of Acquisition Escrow Deposit Cash consideration transferred upon close of acquisition, escrow deposit Business acquisition, contingent consideration transferred upon close of acquisition, payment of outstanding debt. Business Acquisition Contingent Consideration Transferred Upon Close Of Acquisition Payment Of Outstanding Debt Payment of outstanding debt Business Acquisition Cost Of Acquired Entity Cash Paid Amount paid in cash for business acquisition Business Acquisition [Line Items] Business Acquisition [Line Items] Business Combination Consideration Transferred Including Equity Interest In Acquiree Held Prior To Combination Acquisition-date fair value of the consideration transferred Business Combination Contingent Consideration Arrangements Change In Amount Of Contingent Consideration Liability Liability, Fair Value Business Combination Contingent Consideration Arrangements Change In The Range Of Outcomes Contingent Consideration Liability Significant Inputs Fair Value, Unobservable Inputs Business Combination Contingent Consideration Arrangements Change In The Range Of Outcomes Contingent Consideration Liability Valuation Technique Fair Value Measurements, Valuation Technique Business Combination Disclosure [Text Block] Business Combination Capital Expenditures Incurred But Not Yet Paid Purchase of property and equipment on account Capital Lease Obligations Current Capital lease obligations Capital Lease Obligations Noncurrent Capital lease obligations Cash And Cash Equivalents At Carrying Value Cash and cash equivalents at end of period Cash and cash equivalents at beginning of period Cash and cash equivalents Cash And Cash Equivalents Period Increase Decrease Net (decrease)/increase in cash and cash equivalents Cash Based Award [Member] Cash Based Award [Member] Cash Based Award Change in fair value of contingent consideration. Change In Fair Value Of Contingent Consideration Change in fair value of contingent consideration Class Of Stock [Domain] Class of Stock [Domain] Commitments And Contingencies Commitments and contingencies (Note 7) Commitments And Contingencies Disclosure [Text Block] Commitments and Contingencies Common director. Common Director [Member] Common Director Common Stock Par Or Stated Value Per Share Common stock, 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 Common Stock Value Common stock, $0.01 par value, 100,000 shares authorized; 42,172 (December 28, 2012) and 41,551 (September 28, 2012) issued and outstanding shares Communication Processors [Member] Communication Processors [Member] Communication Processors Communications convergence processing. Communications Convergence Processing [Member] Communications Convergence Processing Comprehensive Income Net Of Tax Comprehensive income/(loss) Contingent Consideration By Type [Axis] Contingent Consideration by Type [Axis] Contingent Consideration Type [Domain] Contingent Consideration Type [Domain] Convertible Debt Noncurrent Net carrying value of the liability component Core revenue attributable. Core Revenue Attributable [Member] Core Revenue Attributable Cost Of Goods And Services Sold Cost of goods sold Cost of Goods Sold [Member] Cost Of Goods Sold [Member] Cost of Goods Sold Cost Of Sales [Member] Cost of Goods Sold Credit Facility [Axis] Credit Facility [Axis] Credit Facility [Domain] Credit Facility [Domain] Current Fiscal Year End Date Current Fiscal Year End Date Customer. Customer B [Member] Customer B Customer. Customer [Member] Customer A Customer Relationships [Member] Customer Relationships Debt Conversion Converted Instrument Shares Issued 1 Notes converted, common stock at an initial conversion rate, shares Debt Disclosure [Text Block] Revolving Credit Facilities and Long-Term Debt Debt exchange, transaction fees. Debt Exchange Transaction Fees Debt exchange, transaction fees Debt Instrument [Axis] Debt Instrument [Axis] Debt Instrument Basis Spread On Variable Rate Facility, basis spread on variable rate Debt Instrument Carrying Amount Outstanding balance on the term loan Debt Instrument Convertible Conversion Price 1 Conversion price for notes conversion into common stock Debt Instrument Convertible Effective Interest Rate Effective interest rate on the liability for the period Debt Instrument Convertible Interest Expense Total Debt Instrument Convertible Stock Price Trigger Sale price Debt instrument covenant, borrowing aggregate principal amount, maximum. Debt Instrument Covenant Borrowing Aggregate Principal Amount Financing aggregate principal amount not to exceed Debt Instrument Face Amount Debt instrument face amount Principal value of the liability component Debt Instrument Fair Value Estimated Fair Value Debt Instrument Frequency Of Periodic Payment Term loan, frequency of periodic payment Debt Instrument Increase Accrued Interest Accrued and unpaid interest Debt Instrument Interest Rate Stated Percentage Convertible senior note, percentage Debt Instrument [Line Items] Debt Instrument [Line Items] Debt Instrument Name [Domain] Debt Instrument, Name [Domain] Debt instrument repurchase price, percentage on principal amount, plus accrued and unpaid interest. Debt Instrument Repurchase Price Percentage On Principal Amount Plus Accrued And Unpaid Interest Repurchase price, percentage on principal amount, plus accrued and unpaid interest Debt Instrument [Table] Schedule of Long-term Debt Instruments [Table] Deferred cost of goods sold on shipments to distributors. Deferred Cost Of Goods Sold On Shipments To Distributors Deferred cost of goods sold on shipments to distributors The carrying amount of consideration received or receivable from distributors less the associated costs of inventory shipped as of the balance sheet date on potential earnings that were not recognized as revenue in conformity with GAAP, and which are expected to be recognized as such within one year or the normal operating cycle, if longer. Deferred Income On Sales To Distributors Deferred income on sales to distributors Deferred income on sales to distributors Deferred Rent Credit Current Deferred rent Deferred Rent Credit Noncurrent Deferred rent Deferred Revenue Arrangement By Type [Table] Deferred Revenue Arrangement, by Type [Table] Deferred Revenue Arrangement [Line Items] Deferred Revenue Arrangement [Line Items] Deferred Revenue Current Deferred revenue Deferred revenue on shipments to distributors. Deferred Revenue On Shipments To Distributors Deferred revenue on shipments to distributors Depreciation Depletion And Amortization Depreciation and amortization of property, plant and equipment Developed Technology Rights [Member] Developed Technology Development earnout. Development Earnout [Member] Business Development Earnout Disclosure - Acquired Intangibles [Abstract] Disclosure Acquired Intangibles [Abstract] Disclosure - Acquired Intangibles [Abstract] Disclosure - Activity and Liability Balances Related to Restructuring Plan [Abstract] Disclosure Activity And Liability Balances Related To Restructuring Plan [Abstract] Disclosure - Activity and Liability Balances Related to Restructuring Plan [Abstract] Disclosure - Amortization of Acquired Intangible Assets Included in Costs of Goods Sold and Operating Expense Categories [Abstract] Disclosure Amortization Of Acquired Intangible Assets Included In Costs Of Goods Sold And Operating Expense Categories [Abstract] Disclosure - Amortization of Acquired Intangible Assets Included in Costs of Goods Sold and Operating Expense Categories [Abstract] Disclosure - Amortization of License Agreements Included in Cost of Goods Sold [Abstract] Disclosure Amortization Of License Agreements Included In Cost Of Goods Sold [Abstract] Disclosure - Amortization of License Agreements Included in Cost of Goods Sold [Abstract] Disclosure - Anti-Dilutive Shares Excluded from Calculation of Diluted Net Loss Per Share [Abstract] Disclosure Anti Dilutive Shares Excluded From Calculation Of Diluted Net Loss Per Share [Abstract] Disclosure - Anti-Dilutive Shares Excluded from Calculation of Diluted Net Loss Per Share [Abstract] Disclosure - Assets and Liabilities Subject to Fair Value Measurements on Recurring Basis [Abstract] Disclosure Assets And Liabilities Subject To Fair Value Measurements On Recurring Basis [Abstract] Disclosure - Assets and Liabilities Subject to Fair Value Measurements on Recurring Basis [Abstract] Disclosure - Balance Sheet Information Related to Convertible Senior Notes [Abstract] Disclosure Balance Sheet Information Related To Convertible Senior Notes [Abstract] Disclosure - Balance Sheet Information Related to Convertible Senior Notes [Abstract] Disclosure Business Combination Additional Information [Abstract] Disclosure Business Combination Additional Information [Abstract] Disclosure Business Combination Additional Information [Abstract] Disclosure - Computation of Net (Loss)/Income Per Share [Abstract] Disclosure Computation Of Net Loss Income Per Share [Abstract] Disclosure - Computation of Net (Loss)/Income Per Share [Abstract] Disclosure - Deferred Income on Sales to Distributors [Abstract] Disclosure Deferred Income On Sales To Distributors [Abstract] Disclosure - Deferred Income on Sales to Distributors [Abstract] Disclosure - Details of Other Liabilities [Abstract] Disclosure Details Of Other Liabilities [Abstract] Disclosure - Details of Other Liabilities [Abstract] Disclosure - Direct Customers and/or Distributors Accounted for Ten Percent or More of Net Revenue [Abstract] Disclosure Direct Customers Andor Distributors Accounted For Ten Percent Or More Of Net Revenue [Abstract] Disclosure - Direct Customers and/or Distributors Accounted for Ten Percent or More of Net Revenue [Abstract] Disclosure - Direct Customers and/or Distributors Accounted for Ten Percent or More of Total Accounts Receivable [Abstract] Disclosure Direct Customers Andor Distributors Accounted For Ten Percent Or More Of Total Accounts Receivable [Abstract] Disclosure - Direct Customers and/or Distributors Accounted for Ten Percent or More of Total Accounts Receivable [Abstract] Disclosure - Estimated Future Amortization of Existing Acquired Intangible Assets, Excluding IPR&D [Abstract] Disclosure Estimated Future Amortization Of Existing Acquired Intangible Assets Excluding I P R D [Abstract] Disclosure - Estimated Future Amortization of Existing Acquired Intangible Assets, Excluding IPR&D [Abstract] Disclosure - Estimated Future Amortization of Existing Licensed Intangible Assets [Abstract] Disclosure Estimated Future Amortization Of Existing Licensed Intangible Assets [Abstract] Disclosure - Estimated Future Amortization of Existing Licensed Intangible Assets [Abstract] Disclosure Fair Value Measurements Additional Information [Abstract] Disclosure Fair Value Measurements Additional Information [Abstract] Disclosure Fair Value Measurements Additional Information [Abstract] Disclosure - Fair Value Measurements of Contingent Consideration [Abstract] Disclosure Fair Value Measurements Of Contingent Consideration [Abstract] Disclosure - Fair Value Measurements of Contingent Consideration [Abstract] Disclosure Income Taxes Additional Information [Abstract] Disclosure Income Taxes Additional Information [Abstract] Disclosure Income Taxes Additional Information [Abstract] Disclosure Intangible Assets [Abstract] Disclosure Intangible Assets [Abstract] Disclosure Intangible Assets [Abstract] Disclosure - Interest Expense Information Related to Convertible Senior Notes [Abstract] Disclosure Interest Expense Information Related To Convertible Senior Notes [Abstract] Disclosure - Interest Expense Information Related to Convertible Senior Notes [Abstract] Disclosure Inventories [Abstract] Disclosure Inventories [Abstract] Disclosure Inventories [Abstract] Disclosure - Liabilities Measured and Recorded at Fair Value On Recurring Basis Using Unobservable Inputs (Level Three) [Abstract] Disclosure Liabilities Measured And Recorded At Fair Value On Recurring Basis Using Unobservable Inputs Level Three [Abstract] Disclosure - Liabilities Measured and Recorded at Fair Value On Recurring Basis Using Unobservable Inputs (Level Three) [Abstract] Disclosure - Net Revenue by Product Line [Abstract] Disclosure Net Revenue By Product Line [Abstract] Disclosure - Net Revenue by Product Line [Abstract] Disclosure Of Compensation Related Costs Share Based Payments [Text Block] Stock-Based Compensation Disclosure - Quantitative Information Level Three Fair Value Measurements [Abstract] Disclosure Quantitative Information Level Three Fair Value Measurements [Abstract] Disclosure - Quantitative Information Level Three Fair Value Measurements [Abstract] Disclosure Related Party Transactions Additional Information [Abstract] Disclosure Related Party Transactions Additional Information [Abstract] Disclosure Related Party Transactions Additional Information [Abstract] Disclosure Restructuring Charges Additional Information [Abstract] Disclosure Restructuring Charges Additional Information [Abstract] Disclosure Restructuring Charges Additional Information [Abstract] Disclosure - Revenue by Geographic Area Based upon Country of Destination [Abstract] Disclosure Revenue By Geographic Area Based Upon Country Of Destination [Abstract] Disclosure - Revenue by Geographic Area Based upon Country of Destination [Abstract] Disclosure - Revolving Credit Facilities and Long-Term Debt - Additional Information [Abstract] Disclosure Revolving Credit Facilities And Long Term Debt Additional Information [Abstract] Disclosure - Revolving Credit Facilities and Long-Term Debt - Additional Information [Abstract] Disclosure Stock Award Activity [Abstract] Disclosure Stock Award Activity [Abstract] Disclosure Stock Award Activity [Abstract] Disclosure Stock Based Compensation Additional Information [Abstract] Disclosure Stock Based Compensation Additional Information [Abstract] Disclosure Stock Based Compensation Additional Information [Abstract] Disclosure - Stock-Based Compensation by Functional Line Item [Abstract] Disclosure Stock Based Compensation By Functional Line Item [Abstract] Disclosure - Stock-Based Compensation by Functional Line Item [Abstract] Disclosure Stock Option Activity [Abstract] Disclosure Stock Option Activity [Abstract] Disclosure Stock Option Activity [Abstract] Disclosure - Stock Option Grant Date Fair Value Estimated Using Black-Scholes Pricing Model [Abstract] Disclosure Stock Option Grant Date Fair Value Estimated Using Black Scholes Pricing Model [Abstract] Disclosure - Stock Option Grant Date Fair Value Estimated Using Black-Scholes Pricing Model [Abstract] Disclosure Supplemental Cash Flow Information [Abstract] Disclosure Supplemental Cash Flow Information [Abstract] Disclosure Supplemental Cash Flow Information [Abstract] Disclosure - Supplemental Financial Statement Data - Additional Information [Abstract] Disclosure Supplemental Financial Statement Data Additional Information [Abstract] Disclosure - Supplemental Financial Statement Data - Additional Information [Abstract] Document Documentand Entity Information [Abstract] Document Documentand Entity Information [Abstract] Document Documentand 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 Period End Date Document Period End Date Document Type Document Type Earnings Per Share [Abstract] Net income/(loss) per share: Earnings Per Share Basic Basic Earnings/(loss) per share - basic Earnings Per Share Basic [Abstract] Earnings per share - basic Earnings Per Share Diluted Diluted Earnings/(loss) per share - diluted Earnout fair value. Earnout Fair Value Earnout's fair value Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate Federal statutory rate Effect Of Exchange Rate On Cash And Cash Equivalents Effect of foreign currency exchange rates on cash Embedded Derivative Fair Value Of Embedded Derivative Liability Contingent obligation in other liability Employee Related Liabilities Current Accrued compensation and benefits Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items] Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] Employee Service Share Based Compensation Allocation Of Recognized Period Costs Report Line [Domain] Employee Service Share-based Compensation, Allocation of Recognized Period Costs, Report Line [Domain] Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition 1 Remaining Years to Vest, Service-based Remaining Years to Vest, Vesting Condition Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Share Based Awards Other Than Options Remaining Unrecognized Compensation Cost, Vesting Condition Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Stock Options Remaining Unrecognized Compensation Cost, Service-based Employee stock purchase plan shares. Employee Stock Purchase Plan Shares [Member] Employee Stock Purchase Plan Shares Entities [Table] Entities [Table] Entity Central Index Key Entity Central Index Key Entity Common Stock Shares Outstanding Entity Common Stock, Shares Outstanding Entity [Domain] Entity [Domain] Entity Filer Category Entity Filer Category Entity Registrant Name Entity Registrant Name Entity Wide Information Revenue From External Customer [Line Items] Revenue from External Customer [Line Items] Entity wide receivable major customer percentage. Entity Wide Receivable Major Customer Percentage Direct customers and/or distributors accounted for 10% or more of total accounts receivable Entity Wide Revenue Major Customer [Line Items] Revenue, Major Customer [Line Items] Entity Wide Revenue Major Customer Percentage Direct customers and/or distributors accounted for 10% or more of net revenue Equity Awards [Member] Equity Awards [Member] Equity Awards Escrow payable. Escrow Payable Escrow payable The total amount of cash expected to be paid for charges associated with the consolidation and relocation of operations, disposition or abandonment of operations or productive assets (that is, for reorganizing and restructuring charges and other related expenses). Estimated Cash Payment For Restructuring Cash expenditure incurred Estimated useful life. Estimated Useful Life [Member] Estimated Useful Life Europe Middle East Africa [Member] Europe Middle East Africa [Member] Europe Middle East Africa Expected Amortization Expense [Line Items] Expected Amortization Expense [Line Items] Expected Amortization Expense [Line Items] Expected Amortization Expense [Table] Expected Amortization Expense [Table] Expected Amortization Expense [Table] Expected product cycle. Expected Product Cycle [Member] Expected Product Cycle Facilities And Other [Member] Facilities And Other [Member] Facilities And Other 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] Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Table] Fair Value Measurements, Recurring and Nonrecurring [Table] Fair Value Assumptions Expected Volatility Rate Assumed volatility Fair Value By Fair Value Hierarchy Level [Axis] Fair Value, Hierarchy [Axis] Fair Value By Liability Class [Axis] Liability Class [Axis] Fair Value By Measurement Frequency [Axis] Measurement Frequency [Axis]