| Description of Business and Summary of Significant Accounting Policies (Policies) | 12 Months Ended |
| Jun. 29, 2019 |
| Organization, Consolidation and Presentation of Financial Statements [Abstract] | |
| Basis of Presentation | Basis of Presentation The preparation of the consolidated financial statements in accordance with U.S. generally accepted accounting principles (“GAAP”) requires management to make estimates and assumptions that affect the amounts reported in our consolidated financial statements and accompanying notes. Management bases its estimates on historical experience and various other assumptions believed to be reasonable. Although these estimates are based on management’s best knowledge of current events and actions that may impact the Company in the future, actual results may be different from the estimates. Our critical accounting policies are those that affect our financial statements materially and involve difficult, subjective or complex judgments by management. Those policies are inventory valuation, revenue recognition, income taxes, long-lived asset valuation, business combinations, and goodwill. On December 10, 2018, we completed our merger with Oclaro, Inc. (“Oclaro”), a provider of optical components and modules for the long-haul, metro and data center markets. Our consolidated financial statements include the operating results of Oclaro for the period from the date of acquisition through June 29, 2019 . Refer to “ Note 5. Business Combination ” for further discussion of the merger. |
| Fiscal Years | Fiscal Years We utilize a 52-53 week fiscal year ending on the Saturday closest to June 30th. Our fiscal 2019 and 2018 ended on June 29, 2019 and June 30, 2018, respectively, and were 52-week years. Our fiscal 2017 ended on July 1, 2017 and was a 53-week year. |
| Principles of Consolidation | Principles of Consolidation The preparation of the consolidated financial statements in accordance with GAAP in the United States requires management to make estimates and assumptions that affect the amounts reported in our consolidated financial statements and accompanying notes. Management bases its estimates on historical experience and various other assumptions believed to be reasonable. Although these estimates are based on management’s best knowledge of current events and actions that may impact the Company in the future, actual results may be different from the estimates. |
| Reclassification | Certain prior period amounts have been reclassified to conform to the current year presentation. |
| Cash and Cash Equivalents | Cash and Cash Equivalents We consider highly-liquid fixed income securities with original maturities of three months or less at the time of purchase to be cash equivalents. As of fiscal year ended June 29, 2019, cash and cash equivalents mainly consist of commercial papers, money market funds, and U.S. Treasury securities. As of fiscal year ended June 30, 2018, our cash and cash equivalents did not include any investments with original maturities of three months or less. |
| Short-term Investments and Impairment of Marketable and Non-Marketable Securities | Short-term Investments We classify our investments in debt as available-for-sale and record these investments at fair value. Investments with an original maturity of three months or less at the date of purchase are considered cash equivalents, while all other investments are classified as short-term based on management’s intent and ability to use the funds in current operations. Unrealized gains and losses are reported as a component of other comprehensive loss. Realized gains and losses are determined based on the specific identification method, and are reflected as interest and other income (expense), net in our Consolidated Statements of Operations. We regularly review our investment portfolio to identify and evaluate investments that have indicators of possible impairment. Factors considered in determining whether a loss is other-than-temporary include, but are not limited to: the length of time and extent a security’s fair value has been below its cost, the financial condition and near-term prospects of the investee, the credit quality of the security’s issuer, likelihood of recovery and our intent and ability to hold the security for a period of time sufficient to allow for any anticipated recovery in value. For our debt instruments, we also evaluate whether we have the intent to sell the security or it is more likely than not that we will be required to sell the security before recovery of its cost basis. Impairment of Marketable and Non-Marketable Securities We periodically review our marketable and non-marketable securities for impairment. If we conclude that any of these investments are impaired, we determine whether such impairment is other-than-temporary. We consider factors such as the duration, severity and the reason for the decline in value, the potential recovery period and whether we intend to sell. For marketable debt securities, we also consider whether (i) it is more likely than not that we will be required to sell the debt securities before recovery of their amortized cost basis, and (ii) the amortized cost basis cannot be recovered as a result of credit losses. If any impairment is considered other-than-temporary, we will write-down the security to its fair value. |
| Fair Value of Financial Measurements | Fair Value of Financial Instruments We define fair value as the price that would be received from selling an asset, or paid to transfer a liability, in an orderly transaction between market participants at the measurement date. When determining the fair value measurements for assets and liabilities which are required to be recorded at fair value, we consider the principal or most advantageous market in which to transact and the market-based risk. We apply fair value accounting for all financial assets and liabilities that are recognized or disclosed at fair value in the financial statements on a recurring basis. The carrying amounts reported in the consolidated financial statements approximate the fair value for cash and cash equivalents, accounts receivable, accounts payable and accrued liabilities due to their short-term nature. We determine fair value based on the fair value hierarchy, which requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. The fair value assumes that the transaction to sell the asset or transfer the liability occurs in the principal or most advantageous market for the asset or liability and establishes that the fair value of an asset or liability shall be determined based on the assumptions that market participants would use in pricing the asset or liability. The classification of a financial asset or liability within the hierarchy is based upon the lowest level input that is significant to the fair value measurement. The fair value hierarchy prioritizes the inputs into three levels that may be used to measure fair value: Level 1: Inputs are unadjusted quoted prices in active markets for identical assets or liabilities. Level 2: Inputs are quoted prices for similar assets and liabilities in active markets or inputs that are observable for the asset or liability, either directly or indirectly through market corroboration, for substantially the full term of the financial instrument. Level 3: Inputs are unobservable inputs based on our assumptions. The fair value of our Level 1 financial instruments, such as money market funds, which are traded in active markets, is based on quoted market prices for identical instruments. The fair value of our Level 2 fixed income securities is obtained from an independent pricing service, which may use quoted market prices for identical or comparable instruments or model driven valuations using observable market data or inputs corroborated by observable market data. Our marketable securities are held by custodians who obtain investment prices from a third-party pricing provider that incorporates standard inputs in various asset price models. Our procedures include controls to ensure that appropriate fair values are recorded, including comparing the fair values obtained from our pricing service against fair values obtained from another independent source. Prior to the conversion of the Series A Preferred Stock in the second quarter of fiscal 2019, we estimated the fair value of the embedded derivative for the Series A Preferred Stock using the binomial lattice model. The binomial lattice model requires various assumptions to be made to determine the fair value of the embedded derivatives. These assumptions represent Level 3 inputs. Refer to “ Note 12. Non-Controlling Interest Redeemable Convertible Preferred Stock and Derivative Liability .” In February 2017, we completed the acquisition of a privately held company to enhance our manufacturing and vertical integration capabilities for a total purchase consideration of $8.7 million . We estimated the fair value of our Level 3 contingent consideration related to this acquisition at the present value of the expected contingent payments, determined using a probabilistic approach. We estimated the likelihood of meeting the production targets at 90 percent and recorded $2.7 million as fair value of such contingent consideration in other current liabilities on the consolidated balance sheet as of June 29, 2019 . This contingent consideration will result in a cash payment of $3.0 million (based on the exchange rate as of the acquisition date), if and when the production targets are achieved, which we expect to occur within the following 12 months . We are required to reassess the fair value of contingent payments on a periodic basis. There was no change in the fair value of our contingent consideration during fiscal 2019, 2018 or 2017. Our pension assets consist of multiple institutional funds (“pension funds”) of which the fair values are based on the quoted prices of the underlying funds. Pension funds are mainly classified as Level 2 assets since such funds are not directly traded in active markets. Refer to “ Note 18. Employee Benefit Plans .” Based on quoted market prices as of June 29, 2019 , the fair value of the Convertible Notes (“ Note 13. Convertible Notes ”) was approximately $527.0 million , determined using Level 2 inputs as they are not actively traded in markets. Assets Measured at Fair Value on a Non-Recurring Basis We periodically review our intangible and other long-lived assets for impairment whenever events or changes in circumstances indicate that the carrying amount of such assets may not be recoverable. Determination of recoverability is based on the lowest level of identifiable estimated undiscounted cash flows resulting from use of the asset and its eventual disposition. If not recoverable, an impairment loss would be calculated based on the excess of the carrying amount over the fair value. |
| Basic and Diluted Net Income (Loss) per Common Share | Basic and Diluted Net Income (Loss) per Common Share Basic income (loss) per share is computed by dividing net income (loss) available to common stockholders by the weighted average number of common shares outstanding during the reporting period. The weighted average number of shares is calculated by taking the number of shares outstanding and weighting them by the amount of time that they were outstanding. Diluted earnings per share reflects the potential dilution that could occur if stock options, preferred stock, and other commitments to issue common stock were exercised or equity awards vest resulting in the issuance of common stock that could share in the earnings of the Company. Diluted loss per share is the same as basic loss per share during periods where net losses are incurred since the inclusion of the potential common stock equivalents would be anti-dilutive as a result of the net loss. Our Series A Preferred Stock was considered a participating security where the holders of Series A Preferred Stock had the right to participate in undistributed earnings with holders of common stock. On November 2, 2018, the remaining 35,805 shares of our Series A Preferred Stock were converted into 1.5 million shares of our common stock. Refer to “ Note 12. Non-Controlling Interest Redeemable Convertible Preferred Stock and Derivative Liability ” for further discussion. Prior to conversion, the holders of our Series A Preferred Stock were entitled to share in dividends, on an as-converted basis, if the holders of our common stock were to receive dividends. Up through the date of conversion, we used the two-class method to compute earnings per share. The two-class method is an earnings allocation formula that determines earnings per share for each class of common stock and participating security according to dividends declared (or accumulated) and participation rights in undistributed earnings. In determining the amount of net earnings to allocate to common stockholders, earnings are allocated to both common and participating securities based on their respective weighted-average shares outstanding during the period. Diluted earnings per common share is calculated similar to basic earnings per common share except that it gives effect to all potentially dilutive common stock equivalents outstanding for the period, using the treasury stock method. In March 2017, we issued $450 million in aggregate principal amount of 0.25% Convertible Senior Notes due in 2024 (the “2024 Notes”). We have the ability and intent to settle the $450 million face value of the 2024 Notes in cash. Therefore, we use the treasury stock method for calculating the dilutive impact of the 2024 Notes. The 2024 Notes will have no impact to diluted earnings per share until the average price of our common stock exceeds the conversion price of $60.62 . Refer to “ Note 13. Convertible Notes ” for details. The dilutive effect of securities from the 2015 Equity Incentive Plan is reflected in diluted earnings per share by application of the treasury stock method, which includes consideration of unamortized share-based compensation expense and the dilutive effect of in-the-money options and non-vested restricted stock units. Under the treasury stock method, the amount the employee must pay for exercising stock options and the amount of unamortized share-based compensation expense are collectively assumed to be used to repurchase hypothetical shares. An increase in the fair value of our common stock can result in a greater dilutive effect from potentially dilutive awards. Anti-dilutive potential shares from 2015 Equity Incentive Plan are excluded from the calculation of diluted earnings per share if their exercise price exceeded the average market price during the period or the share-based awards were determined to be anti-dilutive based on applying the treasury stock method. |
| Inventory Valuation | Inventory Valuation Inventory is valued at standard cost, which approximates actual cost computed on a first-in, first-out basis, not in excess of net realizable value. We assess the value of our inventory on a quarterly basis and write down those inventories which are obsolete or in excess of our forecasted usage to the lower of their cost or estimated net realizable value. Our estimates of realizable value are based upon our analysis and assumptions including, but not limited to, forecasted sales levels and historical usage by product, expected product lifecycle, product development plans and future demand requirements. Our product line management personnel play a key role in our excess review process by providing updated sales forecasts, managing product transitions and working with manufacturing to minimize excess inventory. If actual market conditions are less favorable than our forecasts or actual demand from our customers is lower than our estimates, we may be required to record additional inventory write-downs. If actual market conditions are more favorable than anticipated, inventory previously written down may be sold, resulting in lower cost of sales and higher income from operations than expected in that period. |
| Revenue from Contract with Customer | Disaggregation of Revenue We disaggregate revenue by geography and by product. Refer to “ Note 20. Operating Segments and Geographic Information ” for a presentation of disaggregated revenue. We do not present other levels of disaggregation, such as by type of products, customer, markets, contracts, duration of contracts, timing of transfer of control and sales channels, as this information is not used by our Chief Operating Decision Maker to manage the business. Revenue Recognition Adoption of Topic 606 Pursuant to Topic 606, our revenues are recognized upon the application of the following steps: • identification of the contract, or contracts, with a customer; • identification of the performance obligations in the contract; • determination of the transaction price; • allocation of the transaction price to the performance obligations in the contract; and • recognition of revenues when, or as, the contractual performance obligations are satisfied. The majority of our revenue comes from product sales, consisting of sales of Lasers and OpComms hardware products to our customers. Our revenue contracts generally include only one performance obligation. Revenues are recognized at a point in time when control of the promised goods or services are transferred to our customers upon shipment or delivery, in an amount that reflects the consideration we expect to be entitled to in exchange for those goods or services. We have entered into vendor managed inventory (“VMI”) programs with our customers. Under these arrangements, we receive purchase orders from our customers, and the inventory is shipped to the VMI location upon receipt of the purchase order. The customer then pulls the inventory from the VMI hub based on its production needs. Revenue under VMI programs is recognized when control transfers to the customer, which is generally once the customer pulls the inventory from the hub. Revenue from all sales types is recognized at the transaction price. The transaction price is determined based on the consideration to which we will be entitled in exchange for transferring goods or services to the customer adjusted for estimated variable consideration, if any. We typically estimate the impact on the transaction price for discounts offered to the customers for early payments on receivables or net of accruals for estimated sales returns. These estimates are based on historical returns, analysis of credit memo data and other known factors. Actual returns could differ from these estimates. We allocate the transaction price to each distinct product based on its relative standalone selling price. The product price as specified on the purchase order is considered the standalone selling price as it is an observable input that depicts the price as if sold to a similar customer in similar circumstances. Taxes assessed by a governmental authority that are both imposed on and concurrent with a specific revenue-producing transaction, that are collected by us from a customer and deposited with the relevant government authority, are excluded from revenue. Our revenue arrangements do not contain significant financing components as our standard payment terms are less than one year. If a customer pays consideration, or the Company has a right to an amount of consideration that is unconditional before we transfer a good or service to the customer, those amounts are classified as deferred revenue or deposits received from customers which are included in other current liabilities or other long-term liabilities when the payment is made or it is due, whichever is earlier. Transaction Price Allocated to the Remaining Performance Obligations Remaining performance obligations represent the transaction price allocated to performances obligations that are unsatisfied or partially unsatisfied as of the end of the reporting period. Unsatisfied and partially unsatisfied performance obligations consist of contract liabilities and non-cancellable backlog. Non-cancellable backlog includes goods and services for which customer purchase orders have been accepted that are scheduled or in the process of being scheduled for shipment. A portion of our revenue arises from vendor managed inventory arrangements where the timing and volume of customer utilization is difficult to predict. Shipping and Handling Costs We record shipping and handling costs related to revenue transactions within cost of sales as a period cost. Contract Costs The Company recognizes the incremental direct costs of obtaining a contract, which consist of sales commissions, when control over the products they relate to transfers to the customer. Applying the practical expedient, the Company recognizes commissions as expense when incurred, as the amortization period of the commission asset the Company would have otherwise recognized is less than one year. Contract Balances The Company records accounts receivable when it has an unconditional right to consideration. Contract liabilities are recorded when cash payments are received or due in advance of performance. Contract liabilities consist of advance payments and deferred revenue, where the Company has unsatisfied performance obligations. Contract liabilities are classified as deferred revenue and customer deposits, and are included in other current liabilities within our consolidated balance sheet. Payment terms vary by customer. The time between invoicing and when payment is due is not significant. |
| Warranty | Warranty Hardware products regularly include warranties to the end customers such that the product continues to function according to published specifications. We typically offer a twelve month warranty for most of our products. However, in some instances depending upon the product, specific market, product line and geography in which we operate, and what is common in the industry, our warranties can vary and range from six months to five years . These standard warranties are assurance type warranties and do not offer any services in addition to the assurance that the product will continue working as specified. Therefore, warranties are not considered separate performance obligations in the arrangement. Instead, the expected cost of warranty is accrued as expense in accordance with authoritative guidance. We provide reserves for the estimated costs of product warranties at the time revenue is recognized. We estimate the costs of our warranty obligations based on our historical experience of known product failure rates, use of materials to repair or replace defective products and service delivery costs incurred in correcting product failures. In addition, from time to time, specific warranty accruals may be made if unforeseen technical problems arise. |
| Income Taxes | Income Taxes In accordance with the authoritative guidance on accounting for income taxes, we recognize income taxes using an asset and liability approach. This approach requires the recognition of taxes payable or refundable for the current year and deferred tax liabilities and assets for the future tax consequences of events that have been recognized in our consolidated financial statements or tax returns. The measurement of current and deferred taxes is based on provisions of the enacted tax law, and the effects of future changes in tax laws or rates are not anticipated. The authoritative guidance provides for recognition of deferred tax assets if the realization of such deferred tax assets is more likely than not to occur based on an evaluation of both positive and negative evidence and the relative weight of the evidence. We consider future growth, forecasted earnings, future taxable income, the mix of earnings in the jurisdictions in which we operate, historical earnings, taxable income in prior years, if carryback is permitted under the law, and prudent and feasible tax planning strategies in determining the need for a valuation allowance. In the event we were to determine that we would not be able to realize all or part of our net deferred tax assets in the future, an adjustment to the deferred tax assets valuation allowance would be charged to earnings in the period in which we make such a determination, or goodwill would be adjusted at our final determination of the valuation allowance related to an acquisition within the measurement period. If we later determine that it is more likely than not that the net deferred tax assets would be realized, we would reverse the applicable portion of the previously provided valuation allowance as an adjustment to earnings at such time. We are subject to income tax audits by the respective tax authorities of the jurisdictions in which we operate. The determination of our income tax liabilities in each of these jurisdictions requires the interpretation and application of complex, and sometimes uncertain, tax laws and regulations. The authoritative guidance on accounting for income taxes prescribes both recognition and measurement criteria that must be met for the benefit of a tax position to be recognized in the financial statements. If a tax position taken, or expected to be taken, in a tax return does not meet such recognition or measurement criteria, an unrecognized tax benefit liability is recorded. If we ultimately determine that an unrecognized tax benefit liability is no longer necessary, we reverse the liability and recognize a tax benefit in the period in which it is determined that the unrecognized tax benefit liability is no longer necessary. The recognition and measurement of current taxes payable or refundable and deferred tax assets and liabilities requires that we make certain estimates and judgments. Changes to these estimates or a change in judgment may have a material impact on our tax provision in a future period. |
| Property, Plant and Equipment | Property, Plant and Equipment Property, plant and equipment are stated at cost. Depreciation is computed by the straight-line method generally over the following estimated useful lives of the assets: 10 to 40 years for building and improvements, 3 to 5 years for machinery and equipment, and 2 to 5 years for furniture, fixtures, software and office equipment. Leasehold improvements are amortized using the straight-line method over the shorter of the estimated useful lives of the assets or the term of the lease. |
| Goodwill | Goodwill Goodwill represents the excess of the purchase price of an acquired business over the fair value of the identifiable assets acquired and liabilities assumed. We test for impairment of goodwill on an annual basis in the fourth quarter and at any other time when events occur or circumstances indicate that the carrying amount of goodwill may not be recoverable. An entity has the option to first assess qualitative factors to determine whether it is necessary to perform the two-step quantitative goodwill impairment test. If an entity determines that as a result of the qualitative assessment that it is more likely than not (i.e., greater than 50% likelihood) that the fair value of a reporting unit is less than its carrying amount, then the quantitative test is required. Otherwise, no further testing is required. The two-step quantitative goodwill impairment test requires us to estimate the fair value of our reporting units. If the carrying value of a reporting unit exceeds its fair value, the goodwill of that reporting unit is potentially impaired and we proceed to step two of the impairment analysis. In step two of the analysis, we measure and record an impairment loss equal to the excess of the carrying value of the reporting unit’s goodwill over its implied fair value, if any. Application of the goodwill impairment test requires judgments, including: identification of the reporting units, assigning assets and liabilities to reporting units, assigning goodwill to reporting units, a qualitative assessment to determine whether there are any impairment indicators, and determining the fair value of each reporting unit. We estimate the fair value of a reporting unit using market approach, income approach or a combination of market and income approach. Significant estimates in the market approach include: identifying similar companies with comparable business factors such as size, growth, profitability, risk and return on investment, and assessing comparable revenue and operating income multiples in estimating the fair value of the reporting unit. Significant estimates in the income approach include: future cash flows, discount rates. We base our estimates on historical experience and on various assumptions about the future that we believe are reasonable based on available information. Unanticipated events and circumstances may occur that affect the accuracy of our assumptions, estimates and judgments. For example, if the price of our common stock were to significantly decrease combined with other adverse changes in market conditions, thus indicating that the underlying fair value of our reporting units may have decreased, we might be required to reassess the value of our goodwill in the period such circumstances were identified. Based on the impairment analysis performed in the fourth quarter of each year presented, the fair value of our reporting unit substantially exceeded the carrying value; as such, our annual qualitative assessment did not indicate that a more detailed quantitative analysis was necessary. |
| Intangible Assets | Intangible Assets Intangible assets consist primarily of intangible assets purchased through acquisitions. Purchased intangible assets include acquired developed technologies (developed and core technology), customer relationships, in-process research and development, and order backlog. Intangible assets, with the exception of customer relationships and order backlog, are amortized using the straight-line method over the estimated economic useful lives of the assets, which is the period during which expected cash flows support the fair value of such intangible assets. Customer relationships and order backlog are amortized using an accelerated method of amortization over the expected customer lives, which more accurately reflects the pattern of realization of economic benefits expected to be obtained. |
| Long-lived Asset Valuation | Long-lived Asset Valuation We test long-lived assets for recoverability, at the asset group level, when events or changes in circumstances indicate that their carrying amount may not be recoverable. Circumstances which could trigger a review include, but are not limited to: significant decreases in the market price of the asset, significant adverse changes in the business climate or legal factors, accumulation of costs significantly in excess of the amount originally expected for the acquisition or construction of the asset, current period cash flow or operating losses combined with a history of losses or a forecast of continuing losses associated with the use of the asset, or current expectation that the asset will more likely than not be sold or disposed significantly before the end of its estimated useful life. Recoverability is assessed based on the difference between the carrying amount of the asset and the sum of the undiscounted cash flows expected to result from the use and the eventual disposal of the asset. An impairment loss is recognized when the carrying amount is not recoverable and exceeds fair value. |
| Pension Benefits | Pension Benefits The funded status of our retirement-related benefit plan is measured as the difference between the fair value of plan assets and the benefit obligation at fiscal year end, the measurement date. The funded status of an underfunded benefit plan, of which the fair value of plan assets is less than the benefit obligation, is recognized as a non-current net pension liability in the consolidated balance sheets unless the fair value of plan assets is not sufficient to cover the expected payments to be made over the next year (or operating cycle, if longer) from the measurement date. For defined benefit pension plans, the benefit obligation is the projected benefit obligation (“PBO”) which represents the actuarial present value of benefits expected to be paid upon retirement. Net periodic pension cost (income) (“NPPC”) is recorded in the consolidated statements of operations and includes service cost, interest cost, expected return on plan assets, amortization of prior service cost and (gains) losses previously recognized as a component of accumulated other comprehensive income. Service cost represents the actuarial present value of participant benefits attributed to services rendered by employees in the current year. Interest cost represents the time value of money cost associated with the passage of time. (Gains) losses arise as a result of differences between actual experience and assumptions or as a result of changes in actuarial assumptions. Prior service cost (credit) represents the cost of benefit improvements attributable to prior service granted in plan amendments. (Gains) losses and prior service cost (credit) that arise during the current year are first recognized as a component of accumulated other comprehensive income in the consolidated balances sheets, net of tax. Prior service cost is amortized as a component of NPPC over the average remaining service period of active plan participants starting at the date the plan amendment is adopted. Deferred actuarial (gains) losses are subsequently recognized as a component of NPPC if they exceed the greater of 10% of PBO or the fair value of plan assets, with the excess amortized over the average remaining service period of active plan participants. The measurement of the benefit obligation and NPPC is based on our estimates and actuarial valuations, provided by third-party actuaries, which are approved by management. These valuations reflect the terms of the plans and use participant-specific information such as compensation, age and years of service, as well as certain assumptions, including estimates of discount rates, expected return on plan assets, rate of compensation increases, and mortality rates. We evaluate these assumptions annually at a minimum. In estimating the expected return on plan assets, we consider historical returns on plan assets, adjusted for forward-looking considerations, inflation assumptions and the impact of the active management of the plan’s invested assets. |
| Concentration of Credit and Other Risks | Concentration of Credit and Other Risks Financial instruments that potentially subject our business to concentration of credit risk consist primarily of cash and cash equivalents and trade receivables. We perform credit evaluations of our customers’ financial condition and generally do not require collateral from our customers. These evaluations require significant judgment and are based on a variety of factors including, but not limited to, current economic trends, payment history, bad debt write-off experience, and financial review of the customer. Although the Company deposits its cash with financial institutions that management believes are of high credit quality, its deposits, at times, may exceed federally insured limits. The Company’s investment portfolio consists of investment grade securities diversified amongst security types, industries, and issuers. The Company’s investment policy limits the amount of credit exposure in the investment portfolio to a maximum of 5% to any one issuer, except for Treasury and Government Agencies securities, and the Company believes no significant concentration risk exists with respect to these investments. We maintain an allowance for doubtful accounts for estimated losses resulting from the inability of our customers to make required payments. When we become aware that a specific customer is unable to meet their financial obligations, we record a specific allowance to reflect the level of credit risk in the customer’s outstanding receivable balance. In addition, we record additional allowances based on certain percentages of aged receivable balances. These percentages take into account a variety of factors including, but not limited to, current economic trends, payment history and bad debt write-off experience. We classify bad debt expenses as selling, general and administrative (“SG&A”) expense. We have significant trade receivables concentrated in the telecommunications industry. While our allowance for doubtful accounts balance is based on historical loss experience along with anticipated economic trends, unanticipated financial instability in the telecommunications industry could lead to higher than anticipated losses. During fiscal 2019, 2018 and 2017, several customers generated more than 10% of total net revenue. Refer to “ Note 20. Operating Segments and Geographic Information ” in the Notes to Consolidated Financial Statements. Our accounts receivable was concentrated with three customers as of June 29, 2019 , who represented 17% , 17% and 10% of gross accounts receivable, respectively, compared with two customers as of June 30, 2018, who represented 11% and 10% of gross accounts receivable, respectively. We rely on a limited number of suppliers for a number of key components contained in our products. We also rely on a limited number of significant independent contract manufacturers for the production of certain key components and subassemblies contained in our products. We generally use a rolling twelve months forecast based on anticipated product orders, customer forecasts, product order history and backlog to determine our materials requirements. Lead times for the parts and components that we order vary significantly and depend on factors such as the specific supplier, contract terms and demand for a component at a given time. If the forecast does not meet or if it exceeds actual demand, we may have excess or shortfalls of some materials and components, as well as excess inventory purchase commitments. We could experience reduced or delayed product shipments or incur additional inventory write-downs and cancellation charges or penalties, which would increase costs and could have a material adverse impact on our results of operations. |
| Foreign Currency Translation | Foreign Currency Translation Concurrent with the acquisition of Oclaro on December 10, 2018, we established the functional currency for our worldwide operations as the U.S. dollar. The change in our functional currency is a result of significant changes in economic facts and circumstances, primarily the acquisition of Oclaro, a U.S. dollar-denominated functional currency company. The combined business, which requires the integration of our supply chain, manufacturing operations and sales organization, will predominantly use the U.S. dollar, including when negotiating customer and major supplier contracts. Translation adjustments reported prior to December 10, 2018, remain as a component of accumulated other comprehensive income in our consolidated balance sheet. The translated values for any non-monetary assets and liabilities as of December 10, 2018 become the new accounting basis for those assets. Accordingly, monetary assets and liabilities denominated in foreign currencies have been remeasured into U.S. dollars using the exchange rates in effect at the balance sheet date. Foreign currency re-measurement gains (losses) are included in interest and other income (expense), net. |
| Stock-based Compensation | Stock-based Compensation Compensation expense related to stock-based transactions is measured and recognized in the financial statements based on fair value at the grant date. Restricted stock units (“RSUs”) are grants of shares of our common stock, the vesting of which is based on the requisite service requirement. Generally, our RSUs are subject to forfeiture and expected to vest over one to four years . For new-hire grants, RSUs generally vest ratably on an annual basis over four years . For annual refresh grants, RSUs generally vest ratably on an annual, or combination of annual and quarterly, basis over three years . Restricted stock awards (“RSAs”) are grants of shares of our common stock that are subject to various restrictions, including restrictions on transferability and forfeiture provisions. RSAs are expected to vest over one to four years , and the shares acquired may not be transferred by the holder until the vesting conditions (if any) are satisfied. Performance stock units (“PSUs”) are grants of shares of our common stock that vest upon the achievement of certain performance and service conditions. We account for the fair value of PSUs using the closing market price of our common stock on the date of grant. We begin recognizing compensation expense when we conclude that it is probable that the performance conditions will be achieved. We reassess the probability of vesting at each reporting period and adjust our compensation cost based on this probability assessment. Our PSUs are subject to risk of forfeiture until performance and service conditions are satisfied and generally vest over three years . We estimate the fair value of the rights to acquire stock under our 2015 Employee Stock Purchase Plan (the “2015 Purchase Plan”) using the Black-Scholes option pricing formula. Our 2015 Purchase Plan provides for consecutive six-month offering periods. We recognize such compensation expense on a straight-line basis over the requisite service period. We calculate the volatility factor based on our historical stock prices. |
| Restructuring Accrual | Restructuring Accrual Costs associated with restructuring activities are recognized when they are obligated. However, in the case of leases, the expense is estimated and accrued when the property is vacated. Given the significance of, and the timing of the execution of such activities, this process is complex and involves periodic reassessments of estimates made from the time the property was vacated, including evaluating real estate market conditions for expected vacancy periods and sub-lease income. We recognize a liability for post-employment benefits for workforce reductions related to restructuring activities when payment is probable and the amount is reasonably estimable. We continually evaluate the adequacy of the remaining liabilities under our restructuring initiatives. Although we believe that these estimates accurately reflect the costs of our restructuring plans, actual results may differ, thereby requiring us to record additional provisions or reverse a portion of such provisions. Refer to “ Note 14. Restructuring and Related Charges ” in the Notes to Consolidated Financial Statements. |
| Business Combinations | Business Combinations In accordance with the guidance for business combinations, we determine whether a transaction or other event is a business combination, which requires that the assets acquired and liabilities assumed constitute a business. Each business combination is then accounted for by applying the acquisition method. If the assets acquired are not a business, we account for the transaction or other event as an asset acquisition. Under both methods, we recognize the identifiable assets acquired, the liabilities assumed, and any noncontrolling interest in the acquired entity. We capitalize acquisition-related costs and fees associated with asset acquisitions and immediately expense acquisition-related costs and fees associated with business combinations. We allocate the fair value of purchase consideration to the tangible assets acquired, liabilities assumed and intangible assets acquired based on their estimated fair values. The excess of the fair value of purchase consideration over the fair values of these identifiable assets and liabilities is recorded as goodwill. When determining the fair values of assets acquired and liabilities assumed, we make significant estimates and assumptions, especially with respect to intangible assets. Critical estimates in valuing certain intangible assets include, but are not limited to, future expected cash flows from customer relationships and acquired developed technology and discount rates. Our estimates of fair value are based upon assumptions believed to be reasonable, but which are inherently uncertain and unpredictable and, as a result, actual results may differ materially from estimates. Other estimates associated with the accounting for acquisitions may change as additional information becomes available regarding the assets acquired and liabilities assumed. Any change in facts and circumstances that existed as of the acquisition date and impacts our preliminary estimates is recorded to goodwill if identified within the measurement period. Subsequent to the measurement period or our final determination of fair value of assets and liabilities whichever is earlier the adjustments will affect our earnings. In addition, we estimate the economic lives of certain acquired assets and these lives are used to calculate depreciation and amortization expense. If our estimates of the economic lives change, depreciation or amortization expenses could be accelerated or slowed. |
| Research and Development (R&D) Expense | Research and Development (“R&D”) Expense Costs related to R&D, which primarily consists of labor and benefits, supplies, facilities, consulting and outside service fees, are charged to expense as incurred. |
| Loss Contingencies | Loss Contingencies We are subject to the possibility of various loss contingencies arising in the ordinary course of business. We consider the likelihood of loss or impairment of an asset or the incurrence of a liability, as well as our ability to reasonably estimate the amount of loss in determining loss contingencies. An estimated loss is accrued when it is probable that an asset has been impaired or a liability has been incurred and the amount of loss can be reasonably estimated. We regularly evaluate current information available to determine whether such accruals should be adjusted and whether new accruals are required. |
| Asset Retirement Obligations | Asset Retirement Obligations (“ARO”) Our ARO are legal obligations associated with the retirement of long-lived assets pertaining to leasehold improvements. These liabilities are initially recorded at fair value and the related asset retirement costs are capitalized by increasing the carrying amount of the related assets by the same amount as the liability. Asset retirement costs are subsequently depreciated over the useful lives of the related assets. Subsequent to initial recognition, we record period-to-period changes in the ARO liability resulting from the passage of time and revisions to either the timing or the amount of the original estimate of undiscounted cash flows. We derecognize ARO liabilities when the related obligations are settled. |
| Accounting Pronouncements Recently Adopted and Accounting Pronouncements Not Yet Effective | Accounting Pronouncements Recently Adopted In May 2014, the Financial Accounting Standards Board (“FASB”) issued ASU 2014-09 (Topic 606), which amended the existing accounting standards for revenue recognition. Topic 606 outlines a single comprehensive model for entities to use in accounting for revenue arising from contracts with customers. The guidance is effective for annual reporting periods including interim reporting periods beginning after December 15, 2017. On July 1, 2018, we adopted Topic 606 using the modified retrospective method applied to all contracts that are not completed contracts at the date of initial adoption (i.e., July 1, 2018). Results for reporting periods after July 1, 2018 are presented under Topic 606, while prior period amounts are not adjusted and continue to be reported in accordance with our historical accounting under Topic 605. The adoption of Topic 606 did not have a material impact on the nature and timing of our revenues, consolidated statements of operations, cash flows and balance sheets and therefore, we do not present results for the year ended June 29, 2019 under Topic 605. Refer to “ Note 1. Description of Business and Summary of Significant Accounting Policies ” for the changes in our accounting policies due to adoption of Topic 606. Select consolidated balance sheet line items, as if we had adopted Topic 606 prior to July 1, 2018 are summarized below as of the periods presented ( in millions ): June 30, 2018 Adjustments July 1, 2018 Assets: Accounts receivable, net $ 197.1 $ 0.6 $ 197.7 Inventories 174.1 (1.2 ) 172.9 Stockholders’ equity: Retained earnings $ 166.4 $ (0.6 ) $ 165.8 In August 2016, FASB issued ASU 2016-15, S tatement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments , which clarifies how companies present and classify certain cash receipts and cash payments in the statement of cash flows. The amendments contained in ASU 2016-15 are effective for interim and annual periods beginning after December 15, 2017. We adopted ASU 2016-15 on July 1, 2018 on a prospective basis. The application of ASU 2016-15 will have a material impact on our consolidated financial statements if we elect to settle the principal amounts of our 2024 Notes (refer to “ Note 13. Convertible Notes ”) in cash, and upon the repayment of the term loan (refer to “ Note 7. Term Loan Facility ”). The principal repayment will be bifurcated between (i) cash outflows for operating activities of $146.9 million for the portion related to accreted interest attributable to debt discount, and (ii) financing activities for the remainder of $803.1 million . In January 2017, FASB issued ASU 2017-01, Business Combinations (Topic 805) , which clarifies the definition of a business. For accounting and financial reporting purposes, businesses are generally comprised of three elements: inputs, processes, and outputs. Integrated sets of assets and activities capable of providing these three elements may not always be considered a business, and the lack of one of the three elements does not always disqualify the set from being a business. The issuance of ASU 2017-01 provides a clarifying test to determine when a set of assets and activities is not a business. Primarily, the test requires that when substantially all of the fair value of the gross assets acquired is concentrated in a single identifiable asset or group of similar identifiable assets, the set is not a business. The amendments contained in ASU 2017-01 are effective for annual periods beginning after December 15, 2017, including interim periods within those periods. We adopted ASU 2017-01 on July 1, 2018 on a prospective basis. The implementation of ASU 2017-01 did not have an impact on our consolidated financial statements. In October 2016, FASB issued ASU 2016-16, Accounting for Income Taxes: Intra-Entity Asset Transfers of Assets other than Inventory. The new guidance removes the prohibition against the immediate recognition of the current and deferred income tax effects of intra-entity transfers of assets other than inventory. The new guidance became effective for us in the first quarter of our fiscal 2019. The adoption of ASU 2016-16 did not have a material impact on our consolidated financial statements. In August 2018, FASB issued ASU 2018-15, Intangibles-Goodwill and Other-Internal-Use Software (Subtopic 350-40): Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract. ASU 2018-15 requires an entity in a hosting arrangement that is a service contract to follow the guidance in Subtopic 350-40 to determine which implementation costs to capitalize as an asset related to the service contract and which costs to expense. Implementation costs capitalized must be expensed over the term of the hosting arrangement, including the period covered by an option to extend the arrangement. The standard is effective for fiscal years beginning after December 15, 2019, and interim periods within those fiscal years, and should be applied either retrospectively or prospectively to all implementation costs incurred after the date of adoption. Early adoption is permitted, including adoption in any interim period, for all entities. We early adopted ASU 2018-15, which did not have a material impact on our consolidated financial statements. In August 2018, the Securities and Exchange Commission (“SEC”) adopted amendments to certain disclosure requirements in Securities Act Release No. 33-10532, Disclosure Update and Simplification . Among the amendments is the requirement to present the changes in stockholders’ equity in the interim financial statements (either in a separate statement or footnote) in quarterly reports on Form 10-Q. The analysis should present a reconciliation of the beginning balance to the ending balance of each period for which a consolidated statement of operations is required to be filed. The final rule was effective on November 5, 2018. The Company adopted the final rule in our third quarter of fiscal 2019, and has included a reconciliation of the changes in statements of redeemable convertible preferred stock and stockholders' equity in the Form 10-Q for the fiscal quarter ended March 30, 2019 filed with the Securities and Exchange Commission. Accounting Pronouncements Not Yet Effective In August 2018, FASB issued ASU 2018-14, Compensation-Retirement Benefits-Defined Benefit Plans-General (Topic 715-20): Disclosure Framework-Changes to the Disclosure Requirements for Defined Benefit Plans . ASU 2018-14 modifies the disclosure requirements for defined benefit pension plans and other postretirement benefit plans. The new guidance is effective for fiscal years ending after December 15, 2020 and early adoption is permitted. ASU 2018-14 should be applied retrospectively to all periods presented and is effective for us in our fiscal 2021. We are currently evaluating the impact of ASU 2018-14 on our consolidated financial statements and related disclosures. In August 2018, FASB issued ASU 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework-Changes to the Disclosure Requirements for Fair Value Measurement. ASU 2018-13 modifies the disclosure requirements for fair value measurements. The new guidance is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2019 and early adoption is permitted. ASU 2018-13 requires that certain of the amendments be applied prospectively, while other amendments should be applied retrospectively to all periods presented. ASU 2018-13 is effective for us in our first quarter of fiscal 2021. We are currently evaluating the impact of ASU 2018-13 on our consolidated financial statements and related disclosures. In February 2018, FASB issued ASU 2018-02, Income Statement-Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income , which allows companies to reclassify stranded tax effects resulting from the Tax Act, from accumulated other comprehensive income to retained earnings. The guidance also requires certain new disclosures regardless of the election. The amendments in ASU 2018-02 are effective for all entities for fiscal years beginning after December 15, 2018, and interim periods within those fiscal years. Early adoption is permitted. ASU 2018-02 is effective for us in the first quarter of fiscal 2020. The implementation of ASU 2018-02 will not have a material impact on our consolidated financial statements and related disclosures. In January 2017, FASB issued ASU 2017-04, Intangibles - Goodwill and Other (Topic 350): Simplifying the Accounting for Goodwill Impairment . ASU 2017-04 removes the requirement to perform a hypothetical purchase price allocation to measure goodwill impairment. A goodwill impairment charge will be the amount by which a reporting unit's carrying value exceeds its fair value, not to exceed the carrying amount of goodwill. The amendments contained in ASU 2017-04 are effective for interim and annual periods beginning after December 15, 2019, with early adoption permitted, which should be applied prospectively. ASU 2017-14 is effective for us in our first quarter of fiscal 2020. The implementation of ASU 2017-04 will not have a material impact on our consolidated financial statements and related disclosures. In June 2016, FASB issued ASU 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments and subsequent amendments, ASU 2018-19, ASU 2019-04 and ASU 2019-05 (collectively, Topic 326). Topic 326 requires measurement and recognition of expected credit losses for financial assets held. Topic 326 is effective for annual periods beginning after December 15, 2019, including interim periods within those periods, with early adoption permitted. ASU 2016-13 is effective for us in our fiscal 2021. We are currently evaluating the impact of the adoption of Topic 326 on our consolidated financial statements and related disclosures. In February 2016, FASB issued ASU 2016-02, Leases (Topic 842) and subsequent amendments to the initial guidance: ASU 2017-13, ASU 2018-10, ASU 2018-11, ASU 2018-20 and ASU 2019-01 (collectively, Topic 842). The new guidance generally requires an entity to recognize on its balance sheet operating and financing lease liabilities and corresponding right-of-use assets. The new guidance contained in Topic 842 is effective for annual periods beginning after December 15, 2018, including interim periods within those periods, with early adoption permitted. The standard is effective for us in our first quarter of fiscal 2020 and provides an optional transition method that allows entities to apply the standard prospectively, with any cumulative-effect adjustment recorded to opening retained earnings in the period of adoption. We will adopt the new standard using this optional transition method. We have elected the practical expedients to not reassess prior conclusions related to contracts containing leases, lease classification, and initial direct costs for contracts that existed prior to adoption date. We have also elected to combine lease and non-lease components and to keep leases with an initial term of 12 months or less off the balance sheet and recognize the associated lease payments in the consolidated statements of operations on a straight-line basis over the lease term. We expect to recognize operating lease right-of-use assets between $90.0 million to $100.0 million and operating lease liabilities between $80.0 million to $90.0 million on our condensed consolidated balance sheet as of the date of adoption, June 30, 2019. The difference between the operating lease right-of-use assets and operating lease liabilities primarily represents the existing asset recognized in relation to the favorable terms of an operating lease acquired through a business combination offset by our deferred rent balances. Our accounting for finance leases is not expected to change substantially from the legacy Topic 840. Other than disclosed, we do not expect the new standard to have a material impact on our remaining consolidated financial statements. |
| Fair Value Measurements | Fair Value of Financial Instruments We define fair value as the price that would be received from selling an asset, or paid to transfer a liability, in an orderly transaction between market participants at the measurement date. When determining the fair value measurements for assets and liabilities which are required to be recorded at fair value, we consider the principal or most advantageous market in which to transact and the market-based risk. We apply fair value accounting for all financial assets and liabilities that are recognized or disclosed at fair value in the financial statements on a recurring basis. The carrying amounts reported in the consolidated financial statements approximate the fair value for cash and cash equivalents, accounts receivable, accounts payable and accrued liabilities due to their short-term nature. We determine fair value based on the fair value hierarchy, which requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. The fair value assumes that the transaction to sell the asset or transfer the liability occurs in the principal or most advantageous market for the asset or liability and establishes that the fair value of an asset or liability shall be determined based on the assumptions that market participants would use in pricing the asset or liability. The classification of a financial asset or liability within the hierarchy is based upon the lowest level input that is significant to the fair value measurement. The fair value hierarchy prioritizes the inputs into three levels that may be used to measure fair value: Level 1: Inputs are unadjusted quoted prices in active markets for identical assets or liabilities. Level 2: Inputs are quoted prices for similar assets and liabilities in active markets or inputs that are observable for the asset or liability, either directly or indirectly through market corroboration, for substantially the full term of the financial instrument. Level 3: Inputs are unobservable inputs based on our assumptions. The fair value of our Level 1 financial instruments, such as money market funds, which are traded in active markets, is based on quoted market prices for identical instruments. The fair value of our Level 2 fixed income securities is obtained from an independent pricing service, which may use quoted market prices for identical or comparable instruments or model driven valuations using observable market data or inputs corroborated by observable market data. Our marketable securities are held by custodians who obtain investment prices from a third-party pricing provider that incorporates standard inputs in various asset price models. Our procedures include controls to ensure that appropriate fair values are recorded, including comparing the fair values obtained from our pricing service against fair values obtained from another independent source. Prior to the conversion of the Series A Preferred Stock in the second quarter of fiscal 2019, we estimated the fair value of the embedded derivative for the Series A Preferred Stock using the binomial lattice model. The binomial lattice model requires various assumptions to be made to determine the fair value of the embedded derivatives. These assumptions represent Level 3 inputs. Refer to “ Note 12. Non-Controlling Interest Redeemable Convertible Preferred Stock and Derivative Liability .” In February 2017, we completed the acquisition of a privately held company to enhance our manufacturing and vertical integration capabilities for a total purchase consideration of $8.7 million . We estimated the fair value of our Level 3 contingent consideration related to this acquisition at the present value of the expected contingent payments, determined using a probabilistic approach. We estimated the likelihood of meeting the production targets at 90 percent and recorded $2.7 million as fair value of such contingent consideration in other current liabilities on the consolidated balance sheet as of June 29, 2019 . This contingent consideration will result in a cash payment of $3.0 million (based on the exchange rate as of the acquisition date), if and when the production targets are achieved, which we expect to occur within the following 12 months . We are required to reassess the fair value of contingent payments on a periodic basis. There was no change in the fair value of our contingent consideration during fiscal 2019, 2018 or 2017. Our pension assets consist of multiple institutional funds (“pension funds”) of which the fair values are based on the quoted prices of the underlying funds. Pension funds are mainly classified as Level 2 assets since such funds are not directly traded in active markets. Refer to “ Note 18. Employee Benefit Plans .” Based on quoted market prices as of June 29, 2019 , the fair value of the Convertible Notes (“ Note 13. Convertible Notes ”) was approximately $527.0 million , determined using Level 2 inputs as they are not actively traded in markets. Assets Measured at Fair Value on a Non-Recurring Basis We periodically review our intangible and other long-lived assets for impairment whenever events or changes in circumstances indicate that the carrying amount of such assets may not be recoverable. Determination of recoverability is based on the lowest level of identifiable estimated undiscounted cash flows resulting from use of the asset and its eventual disposition. If not recoverable, an impairment loss would be calculated based on the excess of the carrying amount over the fair value. |
