SIGNIFICANT ACCOUNTING POLICIES (Policies)	12 Months Ended
Mar. 31, 2019
Accounting Policies [Abstract]
Management's Use of Estimates and Assumptions	Management's Use of Estimates and Assumptions The Company's consolidated financial statements are prepared in accordance with generally accepted accounting principles in the United States of America ("U.S. GAAP"). In connection with the preparation of our financial statements, the Company is required to make assumptions and estimates about future events and apply judgments that affect the reported amounts of assets, liabilities, net revenues, expenses, and the related disclosures. The Company bases its assumptions, estimates, and judgments on historical experience, current trends, future expectations, and other factors that management believes to be relevant at the time the consolidated financial statements are prepared. On an ongoing basis, the Company reviews its accounting policies, assumptions, estimates, and judgments, including those related to revenue and related reserves and allowances, inventory valuation, product warranty obligations, the useful lives of long-lived assets including property, plant and equipment, investment fair values, stock-based compensation, the valuation of and assessment of recoverability of intangible assets and their useful lives, income taxes, contingencies, and restructuring charges, to ensure that the consolidated financial statements are presented fairly and in accordance with U.S. GAAP. Because future events and their effects cannot be determined with certainty, actual results could differ from the Company's assumptions and estimates.
Principles of Consolidation	Principles of Consolidation The consolidated financial statements include the accounts of the Company and its wholly owned subsidiaries. The Company has included the results of operations of acquired companies from the date of acquisition. All intercompany balances and transactions have been eliminated.
Fiscal Year	Fiscal Year The Company’s fiscal year ends on the Saturday closest to the last day of March. Fiscal Years 2019, 2018, and 2017 each had 52 weeks and ended on March 30, 2019, March 31, 2018, and April 1, 2017, respectively. For purposes of presentation, the Company has indicated its accounting fiscal year as ending on March 31.
Financial Instruments	Financial Instruments Cash, Cash Equivalents and Investments All highly liquid investments with initial stated maturities of three months or less at the date of purchase are classified as cash equivalents. The Company classifies its investments as either short-term or long-term based on each instrument's underlying effective maturity date and reasonable expectations with regard to sales and redemptions of the instruments. All short-term investments have effective maturities less than 12 months, while all long-term investments have effective maturities greater than 12 months. The Company may sell its investments prior to their stated maturities for strategic purposes, in anticipation of credit deterioration, or for duration management. The Company did not incur any material realized or unrealized gains or losses during Fiscal Year 2019. As of March 31, 2019, with the exception of assets related to the Company's deferred compensation plan and classified as trading securities, all investments were classified as available-for-sale, with unrealized gains and losses recorded as a separate component of accumulated other comprehensive income (loss) ("AOCI") in stockholders’ equity. The specific identification method is used to determine the cost of disposed securities, with realized gains and losses reflected in other non-operating income and (expense), net. Foreign Currency Derivatives The Company accounts for its derivative instruments as either assets or liabilities and carries them at fair value. Derivative foreign currency contracts are valued using pricing models that use observable inputs. The accounting for changes in the fair value of a derivative depends on the intended use of the derivative and the resulting designation. The Company enters into foreign exchange forward contracts to reduce the impact of foreign currency fluctuations on assets and liabilities denominated in currencies other than the functional currency of the reporting entity. The Company does not elect to obtain hedge accounting for these forward contracts. These forward contracts are carried at fair value with changes in the fair value recorded within other non-operating income and (expense), net in the consolidated statements of operations. Gains and losses on these contracts are intended to offset the impact of foreign exchange rate changes on the underlying foreign currency denominated assets and liabilities, and therefore, do not subject the Company to material balance sheet risk. The Company has significant international revenues and costs denominated in foreign currencies, subjecting it to foreign currency risk. The Company purchases foreign currency option contracts and cross-currency swaps that qualify as cash flow hedges, with maturities of up to 24 months, to reduce the volatility of cash flows related primarily to forecasted revenue and expenses. All outstanding derivatives are recognized on the balance sheet at fair value. The effective portion of the designated derivative's gain or loss is initially reported as a component of AOCI and is subsequently reclassified into the financial statement line item in which the hedged item is recorded in the same period the forecasted transaction affects earnings. The Company entered into a 4-year amortizing interest rate swap in order to hedge against changes in cash flows (interest payments) attributable to fluctuations in the Company's variable rate debt. The effective portion of changes in the fair value of the derivative is recorded to other comprehensive income (loss) on the accompanying balance sheets and reclassified into interest expense over the life of the underlying debt as interest on the Company's floating rate debt is accrued. The Company reviews the effectiveness of this instrument on a quarterly basis, recognize current period hedge ineffectiveness immediately in earnings and will discontinue hedge accounting if the Company no longer considers hedging to be highly effective. The Company does not hold or issue derivative financial instruments for speculative trading purposes. The Company enters into derivatives only with counterparties that are among the largest United States ("U.S.") banks, ranked by assets, in order to minimize its credit risk and to date, no such counterparty has failed to meet its financial obligations under such contracts.
Provision for Doubtful Accounts	Provision for Doubtful Accounts The Company maintains a provision for doubtful accounts for estimated losses resulting from the inability of its customers to make required payments. The Company regularly performs credit evaluations of its customers’ financial conditions and considers factors such as historical experience, credit quality, age of the accounts receivable balances, geographic or country-specific risks, and economic conditions that may affect a customer’s ability to pay.
Inventory and Related Reserves	Inventory and Related Reserves Inventories are valued at the lower of cost or net realizable value. Cost is computed using standard cost, which approximates actual cost on a first-in, first-out basis. The Company writes down inventories that have become obsolete or are in excess of anticipated demand or net realizable value. The Company's estimate of write downs for excess and obsolete inventory is based on a detailed analysis of on-hand inventory and purchase commitments in excess of forecasted demand. A substantial portion of the raw materials, components and subassemblies (together, “parts”) used in the Company's products are provided by its suppliers on a consignment basis. These consigned inventories are not recorded on the Company's consolidated balance sheet until it takes title to the parts, which occurs when they are consumed in the production process. The Company provides forecasts to its suppliers covering up to thirteen weeks of demand and places purchase orders when the parts are consumed in the production process, at which time all rights, title, and interest in and to the parts transfers to the Company. Prior to consumption in the production process, the Company's suppliers bear the risk of loss and retain title to the consigned inventory. The terms of the agreements allow the Company to return parts in excess of maximum order quantities to the suppliers at the supplier’s expense. Returns for other reasons are negotiated with the suppliers on a case-by-case basis and to date have been immaterial. As of March 31, 2019, the Company’s aggregate commitment to suppliers for parts used in the manufacture of the Company’s products was $287.5 million, which the Company expects to utilize in the normal course of business, net of an immaterial purchase commitments reserve. The Company’s purchase commitments reserve reflects the Company’s estimate of purchase commitments it does not expect to use in normal ongoing operations within the next twelve months. As of March 31, 2019, and 2018, the off-balance sheet consigned inventory balances were $47.1 million and $48.8 million, respectively.
Product Warranty Obligations	Product Warranty Obligations The Company records a liability for the estimated costs of warranties at the time the related revenue is recognized. The specific warranty terms and conditions range from one to two years starting from the delivery date to the end user and vary depending upon the product sold and the country in which the Company does business. Factors that affect the warranty obligations include product failure rates, estimated return rates, the amount of time lapsed from the date of sale to the date of return, material usage, service related costs incurred in correcting product failure claims, and knowledge of specific product failures that are outside of the Company’s typical experience.
Goodwill and Purchased Intangibles	Goodwill and Purchased Intangibles Goodwill has been measured as the excess of the cost of acquisition over the amount assigned to tangible and identifiable intangible assets acquired less liabilities assumed. At least annually, in the fourth quarter of each fiscal year or more frequently if indicators of impairment exist, management performs a review to determine if the carrying value of goodwill is impaired. The identification and measurement of goodwill impairment involves the estimation of fair value at the Company’s reporting unit level. The Company determines its reporting units by assessing whether discrete financial information is available and if segment management regularly reviews the results of that component. The Company has determined it has one reporting unit. The Company performs an initial assessment of qualitative factors to determine whether the existence of events and circumstances leads to a determination that it is more likely than not that the fair value of a reporting unit is less than its carrying amount. If, after assessing the totality of relevant events and circumstances, the Company determines that it is more likely than not that the fair value of the reporting unit exceeds its carrying value and there is no indication of impairment, no further testing is performed; however, if the Company concludes otherwise, the first step of the two-step impairment test must be performed by estimating the fair value of the reporting unit and comparing it with its carrying value, including goodwill. Intangible assets other than goodwill are carried at cost and amortized on a straight-line basis over their estimated useful lives. The Company reviews identifiable finite-lived intangible assets to be held and used for impairment whenever events or changes in circumstances indicate that the carrying value of the assets may not be recoverable. The Company performs a recoverability test to assess the recoverability of an asset group. Determination of recoverability is based on the lowest level of identifiable estimated undiscounted cash flows resulting from use of the asset group and its ultimate disposition. Measurement of any impairment loss is based on the amount by which the carrying value of the asset exceeds its fair market value.
Property, Plant and Equipment	Property, Plant and Equipment Property, plant and equipment is stated at cost less accumulated depreciation and amortization. Depreciation is calculated using the straight-line method over the estimated useful lives of the respective assets, which range from two to thirty years. Amortization of leasehold improvements is computed using the straight-line method over the shorter of the estimated useful lives of the assets or the remaining lease term. Capitalized software costs are amortized on a straight-line basis over the estimated useful life of the assets. Property, plant and equipment is reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of such assets may not be recoverable. The Company recognizes an impairment charge in the event the net book value of such assets exceeds the future undiscounted cash flows attributable to the asset group. No material impairment losses were incurred in the periods presented.
Fair Value Measurements	Fair Value Measurements All financial assets and liabilities are recognized or disclosed at fair value in the financial statements. Fair value is estimated by applying the following hierarchy, which prioritizes the inputs used to measure fair value into three levels and bases the categorization within the hierarchy upon the lowest level of input that is available and significant to the fair value measurement: Level 1 The Company's Level 1 financial assets consist of Mutual Funds. The fair value of Level 1 financial instruments is measured based on the quoted market price of identical securities. Level 2 The Company's Level 2 financial assets and liabilities consist of derivative foreign currency contracts, an interest rate swap, a term loan facility, and 5.50% Senior Notes. The fair value of Level 2 derivative foreign currency contracts and the interest rate swap is determined using pricing models that use observable market inputs. For more information regarding the Company's derivative assets and liabilities, refer to Note 16, Derivatives. The fair value of Level 2 5.50% Senior Notes and term loan facility are determined based on inputs that were observable in the market, including the trading price of the notes when available. For more information regarding the Company's 5.50% Senior Notes and term loan facility, refer to Note 10, Debt. Level 3 The Company's revolving credit facility falls under the Level 3 hierarchy. The fair value of Level 3 revolving credit facility is determined based on inputs that were unobservable in the market. For more information regarding the Company's debt, refer to Note 10, Debt in the accompanying notes to the consolidated financial statements.
Revenue Recognition	Revenue Recognition Revenue is recognized when obligations under the terms of a contract with the Company's customer are satisfied; generally, this occurs with the transfer of control of its products or services. Revenue is measured as the amount of consideration the Company expects to receive in exchange for transferring goods or providing services. The majority of the Company's business relates to physical product shipments, for which revenue is generally recognized once title and risk of loss of the product are transferred to the customer. The Company believes that transfer of title and risk of loss best represent the moment at which the customer’s ability to direct the use of and obtain substantially all the benefits of an asset have been achieved. The Company has elected to recognize the cost for freight and shipping when control over products have transferred to the customer as an expense in Cost of Revenues. The Company's service revenue is recognized either over-time or at a point-in-time depending on the nature of the offering. Revenues associated with non-cancelable maintenance and support contracts comprise approximately 85% of the Company's overall service revenue and are recognized ratably over the contract term which typically ranges between one and three years. The Company believes this recognition period faithfully depicts the pattern of transfer of control for maintenance and support as the services are provided in relatively even increments and on a daily basis. For certain products, support is provided free of charge without the purchase of a separate maintenance contract. If the support is determined to rise to the level of a performance obligation, the Company allocates a portion of the transaction price to the implied support obligation and recognize service revenue over the estimated implied support period which can range between one month to several years, depending on the circumstances. Revenues associated with Professional Services are recognized when the Company has objectively determined that the obligation has been satisfied, which is usually upon customer acceptance. The Company's contracts with customers often include promises to transfer multiple products and services to a customer. Determining whether products and services are considered distinct performance obligations that should be accounted for separately versus together may require significant judgment. The Company allocates the transaction price of a contract, to each identified performance obligation based on stand-alone selling price (“SSP”). A fixed discount is always subject to allocation in this manner. If the transaction price is considered variable, the Company determines if the consideration is associated with one or many, but not all of the performance obligations and allocates accordingly. Judgment is also required to determine the stand-alone selling price (“SSP") for each distinct performance obligation. The Company derives SSP for its performance obligations through a stratification methodology and consider a number of characteristics including consideration related to different service types, customer and geography characteristics. The Company uses a single amount to estimate SSP for items that are not sold separately, such as maintenance on term-based licenses. In instances where SSP is not directly observable, such as when the Company does not sell the product or service separately, the Company determines the SSP using information that may include market conditions and other observable inputs. On occasion, the Company will fulfill only part of a purchase order due to lack of current availability for one or more items requested on an order. The Company's practice is to ship what is on hand, with the remaining goods shipped once the product is in stock which is generally less than one year from the date of the order. Depending on the terms of the contract or operationally, undelivered or backordered items may be canceled by either party at their discretion. The distributor contracts are made under agreements that allow for rights of return and include various sales incentive programs, such as back end rebates, discounts, marketing development funds, and other sales incentives. The Company can reasonably estimate the sales incentives due to an established sales history with customers and records the estimated reserves and allowances at the time the related revenue is recognized.
Advertising Costs	Advertising Costs The Company expenses all advertising costs as incurred.
Income Taxes	Income Taxes Deferred income taxes are determined based on the differences between the financial reporting and tax bases of assets and liabilities and are measured using the currently enacted tax rates and laws. The Company records a valuation allowance against particular deferred income tax assets if it is more likely than not that those assets will not be realized. The provision for income taxes comprises the Company's current tax liability and changes in deferred income tax assets and liabilities. Significant judgment is required in evaluating the Company's uncertain tax positions and determining its provision for (benefit from) income taxes. The Company establishes reserves for tax-related uncertainties based on estimates of whether, and the extent to which, additional taxes will be due. These reserves are established when the Company believes that certain positions might be challenged despite its belief that its tax return positions are in accordance with applicable tax laws. The Company adjusts these reserves in light of changing facts and circumstances, such as the closing of a tax audit, new tax legislation, or the change of an estimate. To the extent that the final tax outcome of these matters is different than the amounts recorded, such differences will affect the provision for income taxes in the period in which such determination is made. The provision for income taxes includes the effect of reserve provisions and changes to reserves that are considered appropriate, as well as the related net interest and penalties. The Company is subject to income taxes in the U.S. and foreign jurisdictions. At any one-time, multiple tax years are subject to audit by various tax authorities.
Earnings Per Share	Earnings (Loss) Per Share The Company has a share-based compensation plan under which employees, non-employee directors, and consultants may be granted share-based payment awards, including shares of restricted stock on which non-forfeitable dividends are paid on unvested shares. As such, shares of restricted stock are considered participating securities under the two-class method of calculating earnings per share. Historically, the two-class method of calculating earnings per share did not have a material impact on the Company's earnings per share calculation under the treasury stock method. During periods of net loss, no effect is given to participating securities since they do not share in the losses of the Company. For further details refer to Note 18, Computation of Earnings Per Common Share.
Comprehensive Income	Comprehensive Income (Loss) Comprehensive income (loss) consists of two components, net income and other comprehensive income. Other comprehensive income refers to income, expenses, gains, and losses that under U.S. GAAP are recorded as an element of stockholders’ equity but are excluded from net income. Accumulated other comprehensive income, as presented in the accompanying consolidated balance sheets, consists of foreign currency translation adjustments, unrealized gains and losses on derivatives designated as cash flow hedges, net of tax, and unrealized gains and losses on marketable securities classified as available-for-sale, net of tax.
Foreign Operations and Currency Translation	Foreign Operations and Currency Translation The Company's functional currency is the U.S. Dollar (“USD") for all but one of its international subsidiaries located in China. The resulting cumulative translation adjustments related to this subsidiary are immaterial and are included as a component of stockholders' equity in accumulated other comprehensive income. Assets and liabilities denominated in currencies other than the USD or for China, the Chinese Yuan Renminbi (“CNY”), are re-measured at the period-end rates for monetary assets and liabilities and at historical rates for non-monetary assets and liabilities. Revenues and expenses are re-measured at average monthly rates, which approximate actual rates. Foreign currency transaction gains and losses are recognized in other non-operating income and (expense), net, and have not been material for all periods presented.
Stock-Based Compensation Expense	Stock-Based Compensation Expense The Company applies the provisions of the Compensation - Stock Compensation Topic of the FASB ASC 718, which requires the measurement and recognition of compensation expense for all share-based payment awards made to employees and non-employee directors based on estimated fair values. The Company recognizes the grant-date fair value of stock-based compensation as compensation expense using the straight-line attribution approach over the service period for which the stock-based compensation is expected to vest. The Company adopted the new stock-based compensation accounting guidance effective in Fiscal Year 2018. This new guidance requires excess tax benefits and tax deficiencies to be recognized in the provision for income taxes as discrete items in the period when the awards vest or are settled, whereas previously such income tax effects were recorded as part of additional paid-in capital. The adoption of this guidance had an immaterial impact on the Company's effective tax rate for the year ended March 31, 2018. The amount of excess tax benefits or deficiencies will fluctuate from period-to-period based on the price of the Company’s stock, the volume of share-based instruments settled or vested, and the value assigned to employee equity awards under U.S. GAAP. For further details refer to Note 17, Income Taxes.
Treasury Shares	Treasury Shares From time to time, the Company repurchases shares of its common stock, depending on market conditions, in the open market or through privately negotiated transactions, in accordance with programs authorized by the Board of Directors. Repurchased shares are held as treasury stock until such time as they are retired or re-issued. Retirements of treasury stock are non-cash equity transactions in which the reacquired shares are returned to the status of authorized but unissued shares and the cost is recorded as a reduction to both retained earnings and treasury stock. The stock repurchase programs are intended to offset the impact of dilution resulting from the Company's stock-based compensation programs.
Concentration of Risk	Concentration of Risk Financial instruments that potentially subject the Company to concentrations of credit risk consist primarily of cash equivalents, short-term and long-term investments, and trade accounts receivable. The Company’s investment policy limits investments to highly-rated securities. In addition, the Company limits the amount of credit exposure to any one issuer and restricts placement of these investments to issuers evaluated as creditworthy. As of March 31, 2019, the Company's investments were composed solely of Mutual Funds. As of March 31, 2018, the Company's investments were composed of Mutual Funds, US Treasury Notes, Government Agency Securities, Commercial Paper, Corporate Bonds, and Certificates of Deposits ("CDs"). Concentrations of credit risk with respect to trade receivables are limited due to the large number of customers that comprise the Company’s customer base and their dispersion across different geographies and markets. Two customers, D & H Distributing Company and Ingram Micro Group, accounted for 13.0% and 12.4%, respectively, of total net accounts receivable as of March 31, 2018. Three customers, Ingram Micro Group, ScanSource, and D&H Distributors, accounted for 21.3%, 19.2%, and 10.9%, respectively, of total net accounts receivable as of March 31, 2019. The Company does not believe other significant concentrations of credit risk exist. The Company performs ongoing credit evaluations of its customers' financial condition and requires no collateral from its customers. The Company maintains a provision for doubtful accounts based upon expected collectability of all accounts receivable. Certain inventory components required by the Company are only available from a limited number of suppliers. The rapid rate of technological change and the necessity of developing and manufacturing products with short lifecycles may intensify these risks. The inability to obtain components as required, or to develop alternative sources, as required in the future, could result in delays or reductions in product shipments, which in turn could have a material adverse effect on the Company’s business, financial condition, results of operations and cash flows. Related Party The Company's vendor, Digital River, Inc. ("Digital River"), with whom the Company had an existing relationship prior to the acquisition of Polycom, Inc. ("Polycom") for e-commerce services, is a wholly owned subsidiary of Siris Capital Group, LLC ("Siris"). Triangle Private Holdings II, LLC ("Triangle") is also a wholly owned subsidiary of Siris. Immediately prior to the Company's acquisition of Polycom on July 2, 2018, Triangle was Polycom’s sole shareholder and, pursuant to the Company's stock purchase agreement with Triangle, currently owns approximately 16.0% of Plantronics' issued and outstanding stock. Additionally, in connection with the acquisition of Polycom, the Company entered into a Stockholder Agreement with Triangle pursuant to which it agreed to appoint two individuals to the Company's board of directors nominated by Triangle. As a consequence of these relationships, Digital River is considered a related party under Topic 850. The Company had immaterial transactions with Digital River during the year ended March 31, 2019. Accounts Receivable Financing As a result of the Polycom acquisition, the Company assumed a financing agreement with an unrelated third-party financing company (the "Financing Agreement") whereby the Company offers distributors and resellers direct or indirect financing on their purchases of Polycom's products and services. In return, the Company agrees to pay the financing company a fee based on a pre-defined percentage of the transaction amount financed. In certain instances, these financing arrangements result in a transfer of the Company's receivables, without recourse, to the financing company. If the transaction meets the applicable criteria under Topic 860, and is accounted for as a sale of financial assets, the related accounts receivable is excluded from the balance sheet upon receipt of the third-party financing company's payment remittance. In certain legal jurisdictions, the arrangements that involve maintenance services or products bundled with maintenance at one price do not qualify as sale of financial assets in accordance with the authoritative guidance. Accordingly, accounts receivable related to these arrangements are accounted for as a secured borrowing in accordance with Topic 860 and the Company records a liability for any cash received, while maintaining the associated accounts receivable balance until the distributor or reseller remits payment to the third-party financing company. In Fiscal Year 2019, total transactions entered pursuant to the terms of the Financing Agreement were approximately $158.7 million, of which $81.8 million was related to the transfer of the financial asset. The financing of these receivables accelerated the collection of cash and reduced the Company's credit exposure. Included in "Accounts receivables, net" in the Company's consolidated balance sheet as of March 31, 2019 was approximately $40.5 million due from the financing company, of which $21.5 million was related to accounts receivable transferred. Total fees incurred pursuant to the Financing Agreement was $3 million for the year ended March 31, 2019. These fees are recorded as a reduction of net revenues in the Company's consolidated statement of operations. Reclassifications Certain prior year amounts have been reclassified for consistency with current year presentation. Each of the reclassifications was immaterial and had no effect on the Company's results of operations.

SIGNIFICANT ACCOUNTING POLICIES (Policies)

12 Months Ended

Mar. 31, 2019

Management's Use of Estimates and Assumptions

The Company's consolidated financial statements are prepared in accordance with generally accepted accounting principles in the United States of America ("U.S. GAAP"). In connection with the preparation of our financial statements, the Company is required to make assumptions and estimates about future events and apply judgments that affect the reported amounts of assets, liabilities, net revenues, expenses, and the related disclosures. The Company bases its assumptions, estimates, and judgments on historical experience, current trends, future expectations, and other factors that management believes to be relevant at the time the consolidated financial statements are prepared. On an ongoing basis, the Company reviews its accounting policies, assumptions, estimates, and judgments, including those related to revenue and related reserves and allowances, inventory valuation, product warranty obligations, the useful lives of long-lived assets including property, plant and equipment, investment fair values, stock-based compensation, the valuation of and assessment of recoverability of intangible assets and their useful lives, income taxes, contingencies, and restructuring charges, to ensure that the consolidated financial statements are presented fairly and in accordance with U.S. GAAP. Because future events and their effects cannot be determined with certainty, actual results could differ from the Company's assumptions and estimates.

Principles of Consolidation

The consolidated financial statements include the accounts of the Company and its wholly owned subsidiaries. The Company has included the results of operations of acquired companies from the date of acquisition. All intercompany balances and transactions have been eliminated.

Fiscal Year

The Company’s fiscal year ends on the Saturday closest to the last day of March. Fiscal Years 2019, 2018, and 2017 each had 52 weeks and ended on March 30, 2019, March 31, 2018, and April 1, 2017, respectively. For purposes of presentation, the Company has indicated its accounting fiscal year as ending on March 31.

Financial Instruments

Cash, Cash Equivalents and Investments

All highly liquid investments with initial stated maturities of three months or less at the date of purchase are classified as cash equivalents. The Company classifies its investments as either short-term or long-term based on each instrument's underlying effective maturity date and reasonable expectations with regard to sales and redemptions of the instruments. All short-term investments have effective maturities less than 12 months, while all long-term investments have effective maturities greater than 12 months. The Company may sell its investments prior to their stated maturities for strategic purposes, in anticipation of credit deterioration, or for duration management. The Company did not incur any material realized or unrealized gains or losses during Fiscal Year 2019.

As of March 31, 2019, with the exception of assets related to the Company's deferred compensation plan and classified as trading securities, all investments were classified as available-for-sale, with unrealized gains and losses recorded as a separate component of accumulated other comprehensive income (loss) ("AOCI") in stockholders’ equity. The specific identification method is used to determine the cost of disposed securities, with realized gains and losses reflected in other non-operating income and (expense), net.

Foreign Currency Derivatives

The Company accounts for its derivative instruments as either assets or liabilities and carries them at fair value. Derivative foreign currency contracts are valued using pricing models that use observable inputs. The accounting for changes in the fair value of a derivative depends on the intended use of the derivative and the resulting designation.

The Company enters into foreign exchange forward contracts to reduce the impact of foreign currency fluctuations on assets and liabilities denominated in currencies other than the functional currency of the reporting entity. The Company does not elect to obtain hedge accounting for these forward contracts. These forward contracts are carried at fair value with changes in the fair value recorded within other non-operating income and (expense), net in the consolidated statements of operations. Gains and losses on these contracts are intended to offset the impact of foreign exchange rate changes on the underlying foreign currency denominated assets and liabilities, and therefore, do not subject the Company to material balance sheet risk.

The Company has significant international revenues and costs denominated in foreign currencies, subjecting it to foreign currency risk. The Company purchases foreign currency option contracts and cross-currency swaps that qualify as cash flow hedges, with maturities of up to 24 months, to reduce the volatility of cash flows related primarily to forecasted revenue and expenses. All outstanding derivatives are recognized on the balance sheet at fair value. The effective portion of the designated derivative's gain or loss is initially reported as a component of AOCI and is subsequently reclassified into the financial statement line item in which the hedged item is recorded in the same period the forecasted transaction affects earnings.

The Company entered into a 4-year amortizing interest rate swap in order to hedge against changes in cash flows (interest payments) attributable to fluctuations in the Company's variable rate debt. The effective portion of changes in the fair value of the derivative is recorded to other comprehensive income (loss) on the accompanying balance sheets and reclassified into interest expense over the life of the underlying debt as interest on the Company's floating rate debt is accrued. The Company reviews the effectiveness of this instrument on a quarterly basis, recognize current period hedge ineffectiveness immediately in earnings and will discontinue hedge accounting if the Company no longer considers hedging to be highly effective.

The Company does not hold or issue derivative financial instruments for speculative trading purposes. The Company enters into derivatives only with counterparties that are among the largest United States ("U.S.") banks, ranked by assets, in order to minimize its credit risk and to date, no such counterparty has failed to meet its financial obligations under such contracts.

Provision for Doubtful Accounts

The Company maintains a provision for doubtful accounts for estimated losses resulting from the inability of its customers to make required payments. The Company regularly performs credit evaluations of its customers’ financial conditions and considers factors such as historical experience, credit quality, age of the accounts receivable balances, geographic or country-specific risks, and economic conditions that may affect a customer’s ability to pay.

Inventory and Related Reserves

Inventories are valued at the lower of cost or net realizable value. Cost is computed using standard cost, which approximates actual cost on a first-in, first-out basis. The Company writes down inventories that have become obsolete or are in excess of anticipated demand or net realizable value. The Company's estimate of write downs for excess and obsolete inventory is based on a detailed analysis of on-hand inventory and purchase commitments in excess of forecasted demand.

A substantial portion of the raw materials, components and subassemblies (together, “parts”) used in the Company's products are provided by its suppliers on a consignment basis. These consigned inventories are not recorded on the Company's consolidated balance sheet until it takes title to the parts, which occurs when they are consumed in the production process. The Company provides forecasts to its suppliers covering up to thirteen weeks of demand and places purchase orders when the parts are consumed in the production process, at which time all rights, title, and interest in and to the parts transfers to the Company. Prior to consumption in the production process, the Company's suppliers bear the risk of loss and retain title to the consigned inventory.

The terms of the agreements allow the Company to return parts in excess of maximum order quantities to the suppliers at the supplier’s expense. Returns for other reasons are negotiated with the suppliers on a case-by-case basis and to date have been immaterial. As of March 31, 2019, the Company’s aggregate commitment to suppliers for parts used in the manufacture of the Company’s products was $287.5 million, which the Company expects to utilize in the normal course of business, net of an immaterial purchase commitments reserve. The Company’s purchase commitments reserve reflects the Company’s estimate of purchase commitments it does not expect to use in normal ongoing operations within the next twelve months. As of March 31, 2019, and 2018, the off-balance sheet consigned inventory balances were $47.1 million and $48.8 million, respectively.

Product Warranty Obligations

The Company records a liability for the estimated costs of warranties at the time the related revenue is recognized. The specific warranty terms and conditions range from one to two years starting from the delivery date to the end user and vary depending upon the product sold and the country in which the Company does business. Factors that affect the warranty obligations include product failure rates, estimated return rates, the amount of time lapsed from the date of sale to the date of return, material usage, service related costs incurred in correcting product failure claims, and knowledge of specific product failures that are outside of the Company’s typical experience.

Goodwill and Purchased Intangibles

Goodwill has been measured as the excess of the cost of acquisition over the amount assigned to tangible and identifiable intangible assets acquired less liabilities assumed. At least annually, in the fourth quarter of each fiscal year or more frequently if indicators of impairment exist, management performs a review to determine if the carrying value of goodwill is impaired. The identification and measurement of goodwill impairment involves the estimation of fair value at the Company’s reporting unit level. The Company determines its reporting units by assessing whether discrete financial information is available and if segment management regularly reviews the results of that component. The Company has determined it has one reporting unit.

The Company performs an initial assessment of qualitative factors to determine whether the existence of events and circumstances leads to a determination that it is more likely than not that the fair value of a reporting unit is less than its carrying amount. If, after assessing the totality of relevant events and circumstances, the Company determines that it is more likely than not that the fair value of the reporting unit exceeds its carrying value and there is no indication of impairment, no further testing is performed; however, if the Company concludes otherwise, the first step of the two-step impairment test must be performed by estimating the fair value of the reporting unit and comparing it with its carrying value, including goodwill.

Intangible assets other than goodwill are carried at cost and amortized on a straight-line basis over their estimated useful lives. The Company reviews identifiable finite-lived intangible assets to be held and used for impairment whenever events or changes in circumstances indicate that the carrying value of the assets may not be recoverable. The Company performs a recoverability test to assess the recoverability of an asset group. Determination of recoverability is based on the lowest level of identifiable estimated undiscounted cash flows resulting from use of the asset group and its ultimate disposition. Measurement of any impairment loss is based on the amount by which the carrying value of the asset exceeds its fair market value.

Property, Plant and Equipment

Property, plant and equipment is stated at cost less accumulated depreciation and amortization. Depreciation is calculated using the straight-line method over the estimated useful lives of the respective assets, which range from two to thirty years. Amortization of leasehold improvements is computed using the straight-line method over the shorter of the estimated useful lives of the assets or the remaining lease term. Capitalized software costs are amortized on a straight-line basis over the estimated useful life of the assets.

Property, plant and equipment is reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of such assets may not be recoverable. The Company recognizes an impairment charge in the event the net book value of such assets exceeds the future undiscounted cash flows attributable to the asset group. No material impairment losses were incurred in the periods presented.

Fair Value Measurements

All financial assets and liabilities are recognized or disclosed at fair value in the financial statements. Fair value is estimated by applying the following hierarchy, which prioritizes the inputs used to measure fair value into three levels and bases the categorization within the hierarchy upon the lowest level of input that is available and significant to the fair value measurement:

Level 1

The Company's Level 1 financial assets consist of Mutual Funds. The fair value of Level 1 financial instruments is measured based on the quoted market price of identical securities.

Level 2

The Company's Level 2 financial assets and liabilities consist of derivative foreign currency contracts, an interest rate swap, a term loan facility, and 5.50% Senior Notes. The fair value of Level 2 derivative foreign currency contracts and the interest rate swap is determined using pricing models that use observable market inputs. For more information regarding the Company's derivative assets and liabilities, refer to Note 16, Derivatives. The fair value of Level 2 5.50% Senior Notes and term loan facility are determined based on inputs that were observable in the market, including the trading price of the notes when available. For more information regarding the Company's 5.50% Senior Notes and term loan facility, refer to Note 10, Debt.

Level 3

The Company's revolving credit facility falls under the Level 3 hierarchy. The fair value of Level 3 revolving credit facility is determined based on inputs that were unobservable in the market. For more information regarding the Company's debt, refer to Note 10, Debt in the accompanying notes to the consolidated financial statements.

Revenue Recognition

Revenue is recognized when obligations under the terms of a contract with the Company's customer are satisfied; generally, this occurs with the transfer of control of its products or services. Revenue is measured as the amount of consideration the Company expects to receive in exchange for transferring goods or providing services. The majority of the Company's business relates to physical product shipments, for which revenue is generally recognized once title and risk of loss of the product are transferred to the customer. The Company believes that transfer of title and risk of loss best represent the moment at which the customer’s ability to direct the use of and obtain substantially all the benefits of an asset have been achieved. The Company has elected to recognize the cost for freight and shipping when control over products have transferred to the customer as an expense in Cost of Revenues.

The Company's service revenue is recognized either over-time or at a point-in-time depending on the nature of the offering. Revenues associated with non-cancelable maintenance and support contracts comprise approximately 85% of the Company's overall service revenue and are recognized ratably over the contract term which typically ranges between one and three years. The Company believes this recognition period faithfully depicts the pattern of transfer of control for maintenance and support as the services are provided in relatively even increments and on a daily basis. For certain products, support is provided free of charge without the purchase of a separate maintenance contract. If the support is determined to rise to the level of a performance obligation, the Company allocates a portion of the transaction price to the implied support obligation and recognize service revenue over the estimated implied support period which can range between one month to several years, depending on the circumstances. Revenues associated with Professional Services are recognized when the Company has objectively determined that the obligation has been satisfied, which is usually upon customer acceptance.

The Company's contracts with customers often include promises to transfer multiple products and services to a customer. Determining whether products and services are considered distinct performance obligations that should be accounted for separately versus together may require significant judgment. The Company allocates the transaction price of a contract, to each identified performance obligation based on stand-alone selling price (“SSP”). A fixed discount is always subject to allocation in this manner. If the transaction price is considered variable, the Company determines if the consideration is associated with one or many, but not all of the performance obligations and allocates accordingly. Judgment is also required to determine the stand-alone selling price (“SSP") for each distinct performance obligation. The Company derives SSP for its performance obligations through a stratification methodology and consider a number of characteristics including consideration related to different service types, customer and geography characteristics. The Company uses a single amount to estimate SSP for items that are not sold separately, such as maintenance on term-based licenses. In instances where SSP is not directly observable, such as when the Company does not sell the product or service separately, the Company determines the SSP using information that may include market conditions and other observable inputs.

On occasion, the Company will fulfill only part of a purchase order due to lack of current availability for one or more items requested on an order. The Company's practice is to ship what is on hand, with the remaining goods shipped once the product is in stock which is generally less than one year from the date of the order. Depending on the terms of the contract or operationally, undelivered or backordered items may be canceled by either party at their discretion.

The distributor contracts are made under agreements that allow for rights of return and include various sales incentive programs, such as back end rebates, discounts, marketing development funds, and other sales incentives. The Company can reasonably estimate the sales incentives due to an established sales history with customers and records the estimated reserves and allowances at the time the related revenue is recognized.

Advertising Costs

The Company expenses all advertising costs as incurred.

Income Taxes

Deferred income taxes are determined based on the differences between the financial reporting and tax bases of assets and liabilities and are measured using the currently enacted tax rates and laws. The Company records a valuation allowance against particular deferred income tax assets if it is more likely than not that those assets will not be realized. The provision for income taxes comprises the Company's current tax liability and changes in deferred income tax assets and liabilities.

Significant judgment is required in evaluating the Company's uncertain tax positions and determining its provision for (benefit from) income taxes. The Company establishes reserves for tax-related uncertainties based on estimates of whether, and the extent to which, additional taxes will be due. These reserves are established when the Company believes that certain positions might be challenged despite its belief that its tax return positions are in accordance with applicable tax laws. The Company adjusts these reserves in light of changing facts and circumstances, such as the closing of a tax audit, new tax legislation, or the change of an estimate. To the extent that the final tax outcome of these matters is different than the amounts recorded, such differences will affect the provision for income taxes in the period in which such determination is made. The provision for income taxes includes the effect of reserve provisions and changes to reserves that are considered appropriate, as well as the related net interest and penalties.

The Company is subject to income taxes in the U.S. and foreign jurisdictions. At any one-time, multiple tax years are subject to audit by various tax authorities.

Earnings Per Share

Earnings (Loss) Per Share

The Company has a share-based compensation plan under which employees, non-employee directors, and consultants may be granted share-based payment awards, including shares of restricted stock on which non-forfeitable dividends are paid on unvested shares. As such, shares of restricted stock are considered participating securities under the two-class method of calculating earnings per share. Historically, the two-class method of calculating earnings per share did not have a material impact on the Company's earnings per share calculation under the treasury stock method. During periods of net loss, no effect is given to participating securities since they do not share in the losses of the Company. For further details refer to Note 18, Computation of Earnings Per Common Share.

Comprehensive Income

Comprehensive Income (Loss)

Comprehensive income (loss) consists of two components, net income and other comprehensive income. Other comprehensive income refers to income, expenses, gains, and losses that under U.S. GAAP are recorded as an element of stockholders’ equity but are excluded from net income. Accumulated other comprehensive income, as presented in the accompanying consolidated balance sheets, consists of foreign currency translation adjustments, unrealized gains and losses on derivatives designated as cash flow hedges, net of tax, and unrealized gains and losses on marketable securities classified as available-for-sale, net of tax.

Foreign Operations and Currency Translation

The Company's functional currency is the U.S. Dollar (“USD") for all but one of its international subsidiaries located in China. The resulting cumulative translation adjustments related to this subsidiary are immaterial and are included as a component of stockholders' equity in accumulated other comprehensive income. Assets and liabilities denominated in currencies other than the USD or for China, the Chinese Yuan Renminbi (“CNY”), are re-measured at the period-end rates for monetary assets and liabilities and at historical rates for non-monetary assets and liabilities. Revenues and expenses are re-measured at average monthly rates, which approximate actual rates. Foreign currency transaction gains and losses are recognized in other non-operating income and (expense), net, and have not been material for all periods presented.

Stock-Based Compensation Expense

The Company applies the provisions of the Compensation - Stock Compensation Topic of the FASB ASC 718, which requires the measurement and recognition of compensation expense for all share-based payment awards made to employees and non-employee directors based on estimated fair values. The Company recognizes the grant-date fair value of stock-based compensation as compensation expense using the straight-line attribution approach over the service period for which the stock-based compensation is expected to vest.

The Company adopted the new stock-based compensation accounting guidance effective in Fiscal Year 2018. This new guidance requires excess tax benefits and tax deficiencies to be recognized in the provision for income taxes as discrete items in the period when the awards vest or are settled, whereas previously such income tax effects were recorded as part of additional paid-in capital. The adoption of this guidance had an immaterial impact on the Company's effective tax rate for the year ended March 31, 2018. The amount of excess tax benefits or deficiencies will fluctuate from period-to-period based on the price of the Company’s stock, the volume of share-based instruments settled or vested, and the value assigned to employee equity awards under U.S. GAAP. For further details refer to Note 17, Income Taxes.

Treasury Shares

From time to time, the Company repurchases shares of its common stock, depending on market conditions, in the open market or through privately negotiated transactions, in accordance with programs authorized by the Board of Directors. Repurchased shares are held as treasury stock until such time as they are retired or re-issued. Retirements of treasury stock are non-cash equity transactions in which the reacquired shares are returned to the status of authorized but unissued shares and the cost is recorded as a reduction to both retained earnings and treasury stock. The stock repurchase programs are intended to offset the impact of dilution resulting from the Company's stock-based compensation programs.

Concentration of Risk

Financial instruments that potentially subject the Company to concentrations of credit risk consist primarily of cash equivalents, short-term and long-term investments, and trade accounts receivable.

The Company’s investment policy limits investments to highly-rated securities. In addition, the Company limits the amount of credit exposure to any one issuer and restricts placement of these investments to issuers evaluated as creditworthy. As of March 31, 2019, the Company's investments were composed solely of Mutual Funds. As of March 31, 2018, the Company's investments were composed of Mutual Funds, US Treasury Notes, Government Agency Securities, Commercial Paper, Corporate Bonds, and Certificates of Deposits ("CDs").

Concentrations of credit risk with respect to trade receivables are limited due to the large number of customers that comprise the Company’s customer base and their dispersion across different geographies and markets. Two customers, D & H Distributing Company and Ingram Micro Group, accounted for 13.0% and 12.4%, respectively, of total net accounts receivable as of March 31, 2018. Three customers, Ingram Micro Group, ScanSource, and D&H Distributors, accounted for 21.3%, 19.2%, and 10.9%, respectively, of total net accounts receivable as of March 31, 2019. The Company does not believe other significant concentrations of credit risk exist. The Company performs ongoing credit evaluations of its customers' financial condition and requires no collateral from its customers. The Company maintains a provision for doubtful accounts based upon expected collectability of all accounts receivable.

Certain inventory components required by the Company are only available from a limited number of suppliers. The rapid rate of technological change and the necessity of developing and manufacturing products with short lifecycles may intensify these risks. The inability to obtain components as required, or to develop alternative sources, as required in the future, could result in delays or reductions in product shipments, which in turn could have a material adverse effect on the Company’s business, financial condition, results of operations and cash flows.

Related Party

The Company's vendor, Digital River, Inc. ("Digital River"), with whom the Company had an existing relationship prior to the acquisition of Polycom, Inc. ("Polycom") for e-commerce services, is a wholly owned subsidiary of Siris Capital Group, LLC ("Siris"). Triangle Private Holdings II, LLC ("Triangle") is also a wholly owned subsidiary of Siris. Immediately prior to the Company's acquisition of Polycom on July 2, 2018, Triangle was Polycom’s sole shareholder and, pursuant to the Company's stock purchase agreement with Triangle, currently owns approximately 16.0% of Plantronics' issued and outstanding stock. Additionally, in connection with the acquisition of Polycom, the Company entered into a Stockholder Agreement with Triangle pursuant to which it agreed to appoint two individuals to the Company's board of directors nominated by Triangle. As a consequence of these relationships, Digital River is considered a related party under Topic 850. The Company had immaterial transactions with Digital River during the year ended March 31, 2019.

Accounts Receivable Financing

As a result of the Polycom acquisition, the Company assumed a financing agreement with an unrelated third-party financing company (the "Financing Agreement") whereby the Company offers distributors and resellers direct or indirect financing on their purchases of Polycom's products and services. In return, the Company agrees to pay the financing company a fee based on a pre-defined percentage of the transaction amount financed. In certain instances, these financing arrangements result in a transfer of the Company's receivables, without recourse, to the financing company. If the transaction meets the applicable criteria under Topic 860, and is accounted for as a sale of financial assets, the related accounts receivable is excluded from the balance sheet upon receipt of the third-party financing company's payment remittance. In certain legal jurisdictions, the arrangements that involve maintenance services or products bundled with maintenance at one price do not qualify as sale of financial assets in accordance with the authoritative guidance. Accordingly, accounts receivable related to these arrangements are accounted for as a secured borrowing in accordance with Topic 860 and the Company records a liability for any cash received, while maintaining the associated accounts receivable balance until the distributor or reseller remits payment to the third-party financing company.

In Fiscal Year 2019, total transactions entered pursuant to the terms of the Financing Agreement were approximately $158.7 million, of which $81.8 million was related to the transfer of the financial asset. The financing of these receivables accelerated the collection of cash and reduced the Company's credit exposure. Included in "Accounts receivables, net" in the Company's consolidated balance sheet as of March 31, 2019 was approximately $40.5 million due from the financing company, of which $21.5 million was related to accounts receivable transferred. Total fees incurred pursuant to the Financing Agreement was $3 million for the year ended March 31, 2019. These fees are recorded as a reduction of net revenues in the Company's consolidated statement of operations.

Reclassifications

Certain prior year amounts have been reclassified for consistency with current year presentation. Each of the reclassifications was immaterial and had no effect on the Company's results of operations.