Document and Entity Information Document Information [Table] Document Information [Line Items] Document and Entity Information Entity Registrant Name Document Type Document Annual Report Document Period End Date Document Transition Report Entity File Number Entity Incorporation, State or Country Code Entity Tax Identification Number Entity Address, Address Line One Entity Address, City or Town Entity Address, State or Province Entity Address, Postal Zip Code City Area Code Local Phone Number Title of 12(b) Security Trading Symbol Security Exchange Name Entity Well-known Seasoned Issuer Entity Voluntary Filers Entity Current Reporting Status Entity Interactive Data Current Entity Filer Category Entity Small Business Entity Emerging Growth Company Entity Shell Company Entity Public Float Entity Common Stock, Shares Outstanding Entity Central Index Key Current Fiscal Year End Date Document Fiscal Year Focus Document Fiscal Period Focus Amendment Flag Consolidated Balance Sheets Statement [Table] Statement [Line Items] Statement [Line Items] Assets [Abstract] Assets Assets, Current [Abstract] Current assets: Cash and Cash Equivalents, at Carrying Value Cash and cash equivalents Short-term Investments Short-term investments Total short-term investments Accounts Receivable, Net, Current Accounts Receivable, Net Accounts receivable, net Inventory, Net Inventories Inventories Prepaid Expense and Other Assets, Current Prepaid expenses and other current assets Assets, Current Total current assets Property, Plant and Equipment, Net Property and equipment, net Total Property and Equipment, net Goodwill Goodwill, Ending Balance Goodwill, Beginning Balance Goodwill Intangible Assets, Net (Excluding Goodwill) Other intangible assets, net Other Assets, Noncurrent Other assets, net Assets Total assets Liabilities and Equity [Abstract] Liabilities and Stockholders' Equity Liabilities, Current [Abstract] Current liabilities: Accounts Payable, Current Accounts payable The carrying amount of consideration received or receivable as of the balance sheet date on potential earnings that were not recognized as revenue in conformity with GAAP, and current portion of liability returns, which are expected to be recognized as such within one year or the normal operating cycle, if longer, including sales, license fees, and royalties, but excluding interest income. Deferred Revenue and Returns Liability, Current Deferred revenue and returns liability Other Liabilities, Current Other current liabilities Total Other Current Liabilities Liabilities, Current Total current liabilities Convertible Debt, Noncurrent Convertible debt Liabilities, Other than Long-term Debt, Noncurrent Other non-current liabilities Liabilities Total liabilities Commitments and Contingencies. Commitments and contingencies Stockholders' Equity Attributable to Parent [Abstract] Stockholders' equity: Preferred Stock, Value, Issued Preferred stock - $0.0001 par value; 10,000 shares authorized; no shares issued Common Stock, Value, Issued Common stock - $0.0001 par value; 250,000 shares authorized; 43,496 and 43,088 shares issued and outstanding at December 28, 2019 and December 29, 2018, respectively Additional Paid in Capital, Common Stock Additional paid-in capital Retained Earnings (Accumulated Deficit) Retained earnings Accumulated Other Comprehensive Income (Loss), Net of Tax Accumulated other comprehensive income (loss) Stockholders' Equity Attributable to Parent Balance Balance Total stockholders' equity Liabilities and Equity Total liabilities and stockholders' equity Preferred Stock, Par or Stated Value Per Share Preferred stock, par value (in dollars per share) Preferred Stock, Shares Authorized Preferred stock, shares authorized Preferred Stock, Shares Issued Preferred stock, shares issued Common Stock, Par or Stated Value Per Share Common stock, par value (in dollars per share) Common Stock, Shares Authorized Common stock, shares authorized Common Stock, Shares, Issued Common stock, shares issued Common Stock, Shares, Outstanding Balance (in shares) Balance (in shares) Common stock, shares outstanding Consolidated Statements of Income Revenue from Contract with Customer, Excluding Assessed Tax Revenues Cost of Revenue Costs of revenues Gross Profit Gross profit Operating Expenses [Abstract] Operating expenses: Research and Development Expense Research and development Selling, General and Administrative Expense Selling, general and administrative Operating Expenses Operating expenses Operating expenses Operating Income (Loss) Operating income Nonoperating Income (Expense) [Abstract] Other income (expense): Amount before accretion (amortization) of purchase discount (premium) of interest income on nonoperating securities income (expense) related to nonoperating activities, classified as other. Investment Income, Interest and Other Nonoperating Income (Expense) Interest income and other, net Amount of the cost of borrowed funds accounted for as interest expense or income from termination of an interest rate swap. Interest Expense Or Termination Credit Interest expense Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest Income (loss) before income taxes Income before income taxes Income Tax Expense (Benefit) Income tax (expense) benefit Provision (benefit) for income taxes Provision (benefit) for income taxes Net Income (Loss) Available to Common Stockholders, Basic Net income Net income Earnings Per Share Earnings per share: Earnings Per Share, Basic Basic (in dollars per share) Earnings Per Share, Diluted Diluted (in dollars per share) Weighted Average Number of Shares Outstanding, Diluted [Abstract] Weighted-average common shares outstanding: Weighted Average Number of Shares Outstanding, Basic Basic (in shares) Shares used in computing basic earnings per share Weighted Average Number of Shares Outstanding, Diluted Diluted (in shares) Shares used in computing diluted earnings per share Consolidated Statements of Comprehensive Income Other Comprehensive Income (Loss), before Tax, Portion Attributable to Parent [Abstract] Other comprehensive income (loss), before tax: Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, before Tax, Portion Attributable to Parent [Abstract] Net changes to available-for-sale securities: Other Comprehensive Income (Loss), Securities, Available-for-Sale, Unrealized Holding Gain (Loss) Arising During Period, before Tax Unrealized gain (losses) arising during the period Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, before Tax Reclassification for (gains) losses included in net income Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, before Tax, Parent [Abstract] Net changes to cash flow hedges: Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification and Tax Unrealized losses arising during the period Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax Reclassification for (gains) losses included in net income Reclassification of unrealized gains included in net income Other Comprehensive Income (Loss), before Tax, Portion Attributable to Parent Other comprehensive income (loss), before tax Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent Other comprehensive income Provision (benefit) for income taxes Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Other comprehensive income (loss) Other comprehensive income (loss) Comprehensive Income (Loss), Net of Tax, Attributable to Parent Comprehensive income Consolidated Statements of Changes in Stockholders' Equity Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Common Stock [Member] Common Stock Additional Paid In Capital [Member] Additional Paid-In Capital Retained Earnings [Member] Retained Earnings Accumulated Other Comprehensive Income [Member] Accumulated Other Comprehensive Income (Loss) Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity Amount after tax of cumulative effect adjustment on equity or net assets for prospective application of a new accounting principle. Cumulative Effect Of Prospective Application Of New Accounting Principle, Net Of Tax Cumulative effect of adoption of accounting standard Retained earnings Stock Issued During Period, Value, Share-based Compensation, Net of Forfeitures Stock issuances, net of shares withheld for taxes Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures Stock issuances, net of shares withheld for taxes (in shares) Stock Repurchased and Retired During Period, Value Repurchases of common stock Value of shares repurchased and retired Stock Repurchased and Retired During Period, Shares Repurchases of common stock (in shares) Number of shares repurchased and retired Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition Stock-based compensation Adjustments to Additional Paid in Capital, Equity Component of Convertible Debt Convertible debt issuance Consolidated Statements of Cash Flows Net Cash Provided by (Used in) Operating Activities [Abstract] Operating Activities Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Net income Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to reconcile net income to cash provided by operating activities: Depreciation Depreciation of property and equipment The aggregate expense charged against earnings to allocate the cost of intangible and other assets in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by (used in) operations using the indirect method. Amortization of Intangibles and Other Assets Amortization of other intangible assets and other assets Amortization of Debt Issuance Costs and Discounts Amortization of debt discount and debt issuance costs Share-based Compensation Stock-based compensation expense Deferred Income Taxes and Tax Credits Deferred income taxes Increase (Decrease) in Operating Capital [Abstract] Changes in operating assets and liabilities: Increase (Decrease) in Accounts Receivable Accounts receivable Increase (Decrease) in Inventories Inventories Increase (Decrease) in Prepaid Expense and Other Assets Prepaid expenses and other assets Increase (Decrease) in Accounts Payable Accounts payable Amount of increase (decrease) in current liabilities classified as other and liabilities classified as income taxes payable. Increase (Decrease) in Other Current Liabilities and Income Taxes Other current liabilities and income taxes The net change during the reporting period, for based on the revenue and returns from the liability. Increase Decrease In Deferred Revenue And Returns Liability Deferred income, deferred revenue and returns liability Increase (Decrease) in Other Noncurrent Liabilities Other non-current liabilities Net Cash Provided by (Used in) Operating Activities Net cash provided by operating activities Net Cash Provided by (Used in) Investing Activities [Abstract] Investing Activities Payments to Acquire Available-for-sale Securities, Debt Purchases of available-for-sale investments Proceeds from Sale and Maturity of Available-for-sale Securities Sales and maturities of available-for-sale investments Payments to Acquire Property, Plant, and Equipment Purchases of property and equipment Payments to Acquire Other Productive Assets Purchases of other assets Payments to Acquire Businesses, Net of Cash Acquired Acquisitions of businesses, net of cash acquired Net Cash Provided by (Used in) Investing Activities Net cash used in investing activities Net Cash Provided by (Used in) Financing Activities [Abstract] Financing Activities Proceeds from Issuance of Long-term Debt Proceeds from issuance of long-term debt Payments of Debt Issuance Costs Payment of debt issuance costs Repayments of Debt Payments on debt Payments for Repurchase of Common Stock Repurchases of common stock Payments Related to Tax Withholding for Share-based Compensation Payment of taxes withheld for vested stock awards Payment for shares withheld for taxes Proceeds from Issuance of Common Stock Proceeds from the issuance of common stock Payment for Contingent Consideration Liability, Financing Activities Payment of acquisition-related contingent consideration Net Cash Provided by (Used in) Financing Activities Net cash provided by (used in) financing activities Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Increase (decrease) in cash and cash equivalents Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Cash and cash equivalents at end of period Cash and cash equivalents at beginning of period Supplemental Cash Flow Information [Abstract] Supplemental Disclosure of Cash Flow Information: Interest Paid Interest paid Income Taxes Paid, Net Income taxes paid Description of Business Nature of Operations [Text Block] Description of Business Significant Accounting Policies Organization, Consolidation, Basis of Presentation, Business Description and Accounting Policies [Text Block] Significant Accounting Policies Earnings Per Share [Text Block] Earnings Per Share Fair Value of Financial Instruments Fair Value Disclosures [Text Block] Fair Value of Financial Instruments Derivative Financial Instruments Derivative Instruments and Hedging Activities Disclosure [Text Block] Derivative Financial Instruments Balance Sheet Details Supplemental Balance Sheet Disclosures [Text Block] Balance Sheet Details Risks and Uncertainties Concentration Risk Disclosure [Text Block] Risks and Uncertainties Acquisitions Business Combination Disclosure [Text Block] Acquisitions Goodwill and Other Intangible Assets Goodwill and Intangible Assets Disclosure [Text Block] Goodwill and Other Intangible Assets Debt Debt Disclosure [Text Block] Debt Leases Lessee, Operating Leases [Text Block] Leases Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Commitments and Contingencies Stockholders' Equity Stockholders' Equity Note Disclosure [Text Block] Stockholders' Equity Revenues Revenue from Contract with Customer [Text Block] Revenues Stock-Based Compensation Disclosure of Compensation Related Costs, Share-based Payments [Text Block] Stock-Based Compensation Employee Benefit Plan Pension and Other Postretirement Benefits Disclosure [Text Block] Employee Benefit Plan Income Taxes Income Tax Disclosure [Text Block] Income Taxes Segment Information