Entity Central Index Key Business combination recognized identifiable assets acquired and liabilities assumed current liabilities accrued compensation Business combination recognized identifiable assets acquired and liabilities assumed accrued liabilities. Finite lived intangible assets amortization expense to be determined. Effective income tax rate reconciliation share based compensation shortfall amount. Non deductible contingent consideration. Tax cuts and jobs act of 2017 incomplete accounting provisional income tax expense (benefit). Tax cuts and jobs act of 2017 incomplete accounting change in tax rate provisional income tax expense (benefit). Document and entity information. 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 Entity Registrant Name Entity Registrant Name Trading Symbol Trading Symbol Entity Central Index Key Current Fiscal Year End Date Current Fiscal Year End Date Entity Well-known Seasoned Issuer Entity Well Known Seasoned Issuer Entity Current Reporting Status Entity Current Reporting Status Entity Voluntary Filers Entity Voluntary Filers Entity Filer Category Entity Filer Category Entity Common Stock, Shares Outstanding Entity Common Stock Shares Outstanding Entity Public Float Entity Public Float Statement Of Financial Position [Abstract] ASSETS Assets [Abstract] Current Assets: Assets Current [Abstract] Cash and cash equivalents Cash And Cash Equivalents At Carrying Value Accounts receivable, net of allowances of $1.8 and $2.6 at June 2018 and 2017, respectively Accounts Receivable Net Current Inventories Inventory Net Prepaid expenses and other current assets Prepaid Expense And Other Assets Current Total current assets Assets Current Property and equipment, net Property Plant And Equipment Net Goodwill Goodwill Acquired intangibles, net Finite Lived Intangible Assets Net Non-current other assets Other Assets Noncurrent Total assets Assets LIABILITIES AND STOCKHOLDERS’ EQUITY Liabilities And Stockholders Equity [Abstract] Current Liabilities: Liabilities Current [Abstract] Accounts payable Accounts Payable Current Accrued compensation Employee Related Liabilities Current Income taxes payable Accrued Income Taxes Current Acquisition-related liabilities Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Current Liabilities Other accrued liabilities Other Accrued Liabilities Current Current portion of long-term debt Long Term Debt Current Total current liabilities Liabilities Current Long-term debt, net of issuance costs Long Term Debt Noncurrent Convertible notes, net Convertible Long Term Notes Payable Other long-term liabilities Other Liabilities Noncurrent Total liabilities Liabilities Commitments and contingencies Commitments And Contingencies Stockholders' Equity: Stockholders Equity [Abstract] Preferred stock: $0.001 par value; 10,000,000 shares authorized; no shares issued and outstanding Preferred Stock Value $0.001 par value; 120,000,000 shares authorized, 62,889,679 and 60,579,911 shares issued, and 35,249,803 and 34,638,435 shares outstanding, at June 2018 and 2017, respectively Common Stock Value Additional paid-in capital Additional Paid In Capital Common Stock Treasury stock: 27,639,876 and 25,941,476 common shares at June 2018 and 2017, respectively, at cost Treasury Stock Value Accumulated other comprehensive income Accumulated Other Comprehensive Income Loss Net Of Tax Retained earnings Retained Earnings Accumulated Deficit Total stockholders' equity Stockholders Equity Liabilities and stockholders' equity Liabilities And Stockholders Equity Allowance for doubtful accounts receivable Allowance For Doubtful Accounts Receivable Current 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 outstanding Preferred Stock Shares Outstanding Common stock, par value 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 Common treasury shares Treasury Stock Common Shares Amortization of intangible assets included in operating expense. Income Statement [Abstract] Net revenue Revenue From Contract With Customer Excluding Assessed Tax Cost of revenue Cost Of Goods And Services Sold Gross margin Gross Profit Operating expenses: Operating Expenses [Abstract] Research and development Research And Development Expense Selling, general, and administrative Selling General And Administrative Expense Acquired intangibles amortization Amortization Of Intangible Assets Included In Operating Expense Impairment of acquired intangibles Impairment Of Intangible Assets Excluding Goodwill Change in contingent consideration Business Combination Contingent Consideration Arrangements Change In Amount Of Contingent Consideration Liability1 Restructuring costs Restructuring Charges Litigation settlement charge Litigation Settlement Expense Total operating expenses Operating Expenses Operating income/(loss) Operating Income Loss Interest and other income Nonoperating Income Expense Interest expense Interest Expense Impairment recovery on investments, net Gain Loss On Investments Income/(loss) before provision for income taxes and equity investment loss Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments Provision for income taxes Income Tax Expense Benefit Equity investment loss Income Loss From Equity Method Investments Net income/(loss) Net Income Loss Net income/(loss) per share: Earnings Per Share [Abstract] Basic Earnings Per Share Basic Diluted Earnings Per Share Diluted Shares used in computing net income/(loss) per share: Weighted Average Number Of Shares Outstanding [Abstract] Basic Weighted Average Number Of Shares Outstanding Basic Diluted Weighted Average Number Of Diluted Shares Outstanding Statement Of Income And Comprehensive Income [Abstract] Net income/(loss) Other comprehensive loss, net of tax: Other Comprehensive Income Loss Net Of Tax Period Increase Decrease [Abstract] Change in unrealized net loss on investments Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax Reclassification from accumulated other comprehensive loss to interest income for accretion of non-current investments Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax Net current-period other comprehensive loss Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax Comprehensive income/(loss) Comprehensive Income Net Of Tax Payroll taxes for deferred stock units. Statement Of Stockholders Equity [Abstract] Statement [Table] Statement [Table] Equity Components Statement Equity Components [Axis] Equity Component Equity Component [Domain] Common Stock [Member] Common Stock [Member] Additional Paid-in Capital [Member] Additional Paid In Capital [Member] Treasury Stock [Member] Treasury Stock [Member] Accumulated Other Comprehensive Income [Member] Accumulated Other Comprehensive Income [Member] Retained Earnings [Member] Retained Earnings [Member] Restatement Restatement [Axis] Restatement Restatement [Domain] As Adjusted [Member] Restatement Adjustment [Member] Statement [Line Items] Statement [Line Items] Balance, value Balance, shares Shares Issued Other comprehensive income Issuance of common stock for share- based award compensation plans Stock Issued During Period Value Share Based Compensation Issuance of common stock for share-based award compensation plans, shares Stock Issued During Period Shares Share Based Compensation Issuance of common stock for acquisition Stock Issued During Period Value Acquisitions Issuance of common stock for acquisition, shares Stock Issued During Period Shares Acquisitions Payroll taxes for deferred stock units Payroll Taxes For Deferred Stock Units Purchases of treasury stock Treasury Stock Value Acquired Cost Method Tax benefit (deficiency) associated with share-based awards Adjustment To Additional Paid In Capital Income Tax Effect From Share Based Compensation Net Share-based compensation Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value Issuance of Convertible debt Stock Issued During Period Value Conversion Of Convertible Securities Balance, value Balance, shares Cumulative effect of changes in accounting principles for share-based compensation New Accounting Pronouncement Or Change In Accounting Principle Cumulative Effect Of Change On Equity Or Net Assets1 Cumulative effect of changes in accounting principles for income taxes: intra-entity transfers of assets other than inventory Cumulative Effect On Retained Earnings Tax1 Non-cash interest income. Increase (decrease) in acquisition related liabilities. Payments for investment in direct financing lease. Proceeds from direct financing lease. Payment for payroll taxes for deferred stock and market stock units. Statement Of Cash Flows [Abstract] Cash flows from operating activities Net Cash Provided By Used In Operating Activities [Abstract] Net income/(loss) Profit Loss 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] Share-based compensation costs Share Based Compensation Depreciation and amortization Depreciation And Amortization Acquired intangibles amortization Amortization Of Intangible Assets Accretion and remeasurement of contingent consideration liability Deferred taxes Increase Decrease In Deferred Income Taxes Impairment of property and equipment Asset Impairment Charges Non-cash interest Non Cash Interest Income Amortization of convertible debt discount and issuance costs Amortization Of Financing Costs And Discounts Amortization of debt issuance costs Amortization Of Financing Costs Impairment recovery on investments, net Equity investment loss Foreign currency remeasurement (gain)/loss Foreign Currency Transaction Gain Loss Before Tax Changes in operating assets and liabilities, net of acquisitions: Increase Decrease In Operating Capital [Abstract] Accounts receivable, net Increase Decrease In Accounts Receivable Inventories Increase Decrease In Inventories Prepaid expenses and other current assets Increase Decrease In Prepaid Deferred Expense And Other Assets Other assets Increase Decrease In Other Operating Assets Accounts payable Increase Decrease In Accounts Payable Accrued compensation Increase Decrease In Employee Related Liabilities Acquisition related liabilities Increase Decrease In Acquisition Related Liabilities Income taxes payable Increase Decrease In Accrued Income Taxes Payable Other accrued liabilities Increase Decrease In Other Accrued Liabilities 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] Acquisition of businesses, net of cash and cash equivalents acquired Payments To Acquire Businesses Net Of Cash Acquired Proceeds from sales of investments Proceeds From Sale Maturity And Collections Of Investments Purchases of property and equipment Payments To Acquire Property Plant And Equipment Purchase of intangible assets Payments To Acquire Intangible Assets Investment in direct financing lease Payments For Investment In Direct Financing Lease Proceeds from direct financing leases Proceeds From Direct Financing Lease Equity method investment Payments To Acquire Equity Method Investments 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] Proceeds from issuance of convertible debt, net of issuance costs Proceeds From Debt Net Of Issuance Costs Payment of acquisition-related liabilities Payments Of Merger Related Costs Financing Activities Payment of debt Repayments Of Debt Purchases of treasury stock Payments For Repurchase Of Common Stock Proceeds from issuance of shares Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options Payment of debt issuance costs Payments Of Debt Issuance Costs Excess tax benefit from share-based compensation Excess Tax Benefit From Share Based Compensation Financing Activities Payroll taxes for deferred stock and market stock units Payment For Payroll Taxes For Deferred Stock And Market Stock Units Net cash provided by/(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 Continuing Operations Net increase/(decrease) in cash and cash equivalents Cash And Cash Equivalents Period Increase Decrease Cash and cash equivalents at beginning of year Cash and cash equivalents at end of year Supplemental disclosures of cash flow information Supplemental Cash Flow Information [Abstract] Cash paid for interest Interest Paid Net Cash paid for taxes Income Taxes Paid Cash refund on taxes Proceeds From Income Tax Refunds Non-cash investing and financing activities: Cash Flow Noncash Investing And Financing Activities Disclosure [Abstract] Property and equipment received but unpaid Capital Expenditures Incurred But Not Yet Paid Common stock issued pursuant to acquisition Stock Issued1 Accounting Policies [Abstract] Organization and Summary of Significant Accounting Policies Organization Consolidation And Presentation Of Financial Statements Disclosure [Text Block] Net Income Per Share Earnings Per Share [Text Block] Property Plant And Equipment [Abstract] Property and Equipment Property Plant And Equipment Disclosure [Text Block] Business Combinations [Abstract] Acquisitions Business Combination Disclosure [Text Block] Goodwill And Intangible Assets Disclosure [Abstract] Acquired Intangibles Intangible Assets Disclosure [Text Block] Debt Disclosure [Abstract] Debt Debt Disclosure [Text Block] Commitments And Contingencies Disclosure [Abstract] Commitments and Contingencies Commitments And Contingencies Disclosure [Text Block] Equity [Abstract] Stockholders' Equity Stockholders Equity Note Disclosure [Text Block] Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]