SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES | 2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Principles of Consolidation The consolidated financial statements include the accounts of Alkermes plc and its wholly-owned subsidiaries: Alkermes Ireland Holdings Limited; Daravita Pharma Ireland Limited; Daravita Limited; Alkermes Science Four Limited; Alkermes Science Five Limited; Alkermes Science Six Limited; Alkermes Pharma Ireland Limited; Alkermes U.S. Holdings, Inc.; Alkermes, Inc.; Eagle Holdings USA, Inc.; Alkermes Controlled Therapeutics, Inc.; Alkermes Europe, Ltd.; Alkermes Finance Ireland Limited; Alkermes Finance Ireland (No. 2) Limited; Alkermes Finance Ireland (No. 3) Limited; and Alkermes Finance S.à r.l. Intercompany accounts and transactions have been eliminated. On March 7, 2015, the Company entered into a definitive agreement to sell its Gainesville, GA manufacturing facility, the related manufacturing and royalty revenue associated with certain products manufactured at the facility, and the rights to IV/IM and parenteral forms of Meloxicam (the “Gainesville Transaction”) to Recro Pharma, Inc. (“Recro”) and Recro Pharma LLC (together with Recro, the “Purchasers”). The consolidated financial statements include the accounts Alkermes Gainesville LLC, which represent the entities sold, for the period from January 1, 2015 through April 10, 2015; the year ended December 31, 2014; and the nine-month period from April 1, 2013 through December 31, 2013. Use of Estimates The preparation of the Company’s consolidated financial statements in accordance with accounting principles generally accepted in the United States (“U.S.”) (“GAAP”) requires management to make estimates, judgments and assumptions that may affect the reported amounts of assets, liabilities, revenues and expenses, and related disclosure of contingent assets and liabilities. On an on ‑going basis, the Company evaluates its estimates and judgments and methodologies, including those related to revenue recognition and related allowances, its collaborative relationships, clinical trial expenses, the valuation of inventory, impairment and amortization of intangibles and long ‑lived assets, share ‑based compensation, income taxes including the valuation allowance for deferred tax assets, valuation of investments, contingent consideration and litigation. The Company bases its estimates on historical experience and on various other assumptions that are believed to be reasonable, the results of which form the basis for making judgments about the carrying values of assets and liabilities. Actual results may differ from these estimates under different assumptions or conditions. Cash and Cash Equivalents The Company values its cash and cash equivalents at cost plus accrued interest, which the Company believes approximates their market value. The Company considers only those investments which are highly liquid, readily convertible into cash and so near their maturity, generally three months from the date of purchase, that they present insignificant risk of change in value because of interest rate changes to be cash equivalents. Accounts Receivable Included in accounts receivable at December 31, 2015 and 2014, are unbilled receivables of $1 9.3 million and $26.3 million, respectively. The Company’s allowance for doubtful accounts was $0.1 million and zero at December 31, 2015 and 2014, respectively. Investments The Company has investments in various types of securities, consisting primarily of U.S. government and agency obligations, corporate debt securities and debt securities issued by foreign agencies and backed by foreign governments. The Company generally holds its interest bearing investments with major financial institutions and in accordance with documented investment policies. The Company limits the amount of credit exposure to any one financial institution or corporate issuer. At December 31, 2015, substantially all these investments were classified as available for sale and were recorded at fair value. Holding gains and losses on available for sale investments are considered “unrealized” and are reported within “Accumulated other comprehensive (loss) income,” a component of shareholders’ equity. The Company uses the specific identification method for reclassifying unrealized gains and losses into earnings when investments are sold. The Company conducts periodic reviews to identify and evaluate each investment that has an unrealized loss, in accordance with the meaning of other than temporary impairment and its application to certain investments, as required by GAAP. An unrealized loss exists when the current fair value of an individual security is less than its amortized cost basis. Unrealized losses on available for sale securities that are determined to be temporary, and not related to credit loss, are recorded in “Accumulated other comprehensive (loss) income.” For securities with unrealized losses, the Company performs an analysis to assess whether it intends to sell or whether it would more likely than not be required to sell the security before the expected recovery of its amortized cost basis. If the Company intends to sell a security, or may be required to do so, the security’s decline in fair value is deemed to be other than temporary and the full amount of the unrealized loss is recorded within earnings as an impairment loss. Regardless of the Company’s intent to sell a security, the Company performs additional analysis on all securities with unrealized losses to evaluate losses associated with the creditworthiness of the security. Credit losses are identified where the Company does not expect to receive cash flows sufficient to recover the amortized cost basis of a security. The Company's held-to-maturity investments are restricted investments held as collateral under letters of credit related to certain of the Company's agreements and are included in “Investments—long-term,” in the accompanying consolidated balance sheets. Fair Value of Financial Instruments The Company’s financial assets and liabilities are recorded at fair value and are classified as Level 1, 2 or 3 within the fair value hierarchy, as described in the accounting standards for fair value measurement. The Company’s financial assets and liabilities consist of cash equivalents, investments, contingent consideration and warrants to purchase the common stock of a publicly traded company are classified within the fair value hierarchy as follows: · Level 1 –these valuations are based on a market approach using quoted prices in active markets for identical assets. Valuations of these products do not require a significant degree of judgment. Assets utilizing Level 1 inputs at December 31, 2015 included U.S. treasury securities and a fixed term deposit account and at December 31, 2014 included U.S. treasury securities; · Level 2 –these valuations are based on a market approach using quoted prices obtained from brokers or dealers for similar securities or for securities for which the Company has limited visibility into their trading volumes. Valuations of these financial instruments do not require a significant degree of judgment. Assets and liabilities utilizing Level 2 inputs at December 31, 2015 included U.S. government agency debt securities, debt securities issued by foreign agencies and backed by foreign governments and investments in corporate debt securities that are trading in the credit markets; and · Level 3 –these valuations are based on an income approach using certain inputs that are unobservable and are significant to the overall fair value measurement. Valuations of these products require a significant degree of judgment. At December 31, 2015, assets utilizing Level 3 inputs included contingent consideration and warrants to purchase the common stock of Recro. The carrying amounts reflected in the consolidated balance sheets for cash and cash equivalents, accounts receivable, other current assets, accounts payable and accrued expenses approximate fair value due to their short ‑term nature. Inventory Inventory is stated at the lower of cost and net realizable value. Cost is determined using the first-in, first-out method. Included in inventory are raw materials used in production of pre-clinical and clinical products, which have alternative future use and are charged to R&D expense when consumed. The cost elements included within inventory include three primary categories for commercial products: cost of raw materials; direct labor; and overhead. Overhead is based on the normal capacity of the Company’s production facilities and does not include costs from abnormally low production or idle capacity, which are expensed directly to the consolidated statement of operations. Property, Plant and Equipment Property, plant and equipment are recorded at cost, subject to review for impairment whenever events or changes in circumstances indicate that the carrying amount of the assets may not be recoverable. Expenditures for repairs and maintenance are charged to expense as incurred and major renewals and improvements are capitalized. Depreciation is calculated using the straight ‑line method over the following estimated useful lives of the assets: Asset group Term Buildings and improvements 15 - 40 years Furniture, fixtures and equipment 3 - 10 years Leasehold improvements Shorter of useful life or lease term Contingent Consideration The Company records contingent consideration it receives at fair value on the acquisition date. The Company estimates the fair value of contingent consideration through valuation models that incorporate probability-adjusted assumptions related to the achievement of milestones and thus likelihood of receiving related payments. The Company revalues its contingent consideration each reporting period, with changes in the fair value of contingent consideration recognized within the consolidated statements of operations and comprehensive (loss) income. Changes in the fair value of contingent consideration can result from changes to one or multiple inputs, including adjustments to discount rates, changes in the amount or timing of cash flows, changes in the assumed achievement or timing of any development or sales-based milestones and changes in the assumed probability associated with regulatory approval. The period over which the Company discounts its contingent consideration is based on the current development stage of the product candidate, the specific development plan for that product candidate, adjusted for the probability of completing the development steps, and when contingent payments would be triggered. In estimating the probability of success, the Company utilizes data regarding similar milestone events from several sources, including industry studies and the Company’s own experience. These fair value measurements are based on significant inputs not observable in the market. Significant judgment was employed in determining the appropriateness of these assumptions at the acquisition date and for each subsequent period. Accordingly, changes in assumptions described above could have a material impact on the increase or decrease in the fair value of contingent consideration recorded in any given period. Goodwill and Intangible Assets Goodwill represents the excess cost of the Company's investment in the net assets of acquired companies over the fair value of the underlying identifiable net assets at the date of acquisition. The Company’s goodwill consists solely of goodwill created as a result of the Company’s acquisition of Elan Drug Technologies (“EDT”) from Elan Corporation, plc in September 2011 and has been assigned to one reporting unit. A reporting unit is an operating segment or sub-segment to which goodwill is assigned when initially recorded. Goodwill is not amortized but is reviewed for impairment on an annual basis, as of October 31, and whenever events or changes in circumstances indicate that the carrying value of the goodwill might not be recoverable. The Company has the option to first assess qualitative factors to determine whether it is necessary to perform the two-step impairment test. If the Company elects this option and believes, as a result of the qualitative assessment, that it is more-likely-than-not that the fair value of its reporting unit is less than its carrying amount, the quantitative two-step impairment test is required; otherwise, no further testing is required. Alternatively, the Company may elect to not first assess qualitative factors and immediately perform the quantitative two-step impairment test. In the first step, the Company compares the fair value of its reporting unit to its carrying value. If the carrying value of the net assets assigned to the reporting unit exceeds the fair value of its reporting unit, then the second step of the impairment test is performed in order to determine the implied fair value of the Company’s reporting unit’s goodwill. If the carrying value of the Company’s reporting unit’s goodwill exceeds its implied fair value, then the Company would record an impairment loss equal to the difference. The Company performed its annual goodwill impairment test as of October 31, 2015. The Company elected to assess qualitative factors to determine whether it was necessary to perform the two-step impairment test. Based on the weight of all available evidence, including the significance in which the fair value of our reporting unit was in excess of its carrying value at the closing of the Gainesville Transaction and the increase in its fair value from the date of the Gainesville Transaction to October 31, 2015, we determined that the fair value of the reporting unit more ‑likely ‑than ‑not exceeded its carrying value. The Company's finite-lived intangible assets, consisting of core developed technology and collaboration agreements acquired as part of the acquisition of EDT, were recorded at fair value at the time of their acquisition and are stated within the Company’s consolidated balance sheets net of accumulated amortization and impairments. The finite-lived intangible assets are amortized over their estimated useful lives using the economic use method, which reflects the pattern that the economic benefits of the intangible assets are consumed as revenue is generated from the underlying patent or contract. The useful lives of the Company's intangible assets are primarily based on the legal or contractual life of the underlying patent or contract, which does not include additional years for the potential extension or renewal of the contract or patent. Impairment of Long ‑Lived Assets The Company reviews long ‑lived assets to be held and used for impairment whenever events or changes in circumstances indicate that the carrying amount of the assets may not be recoverable. Conditions that would necessitate an impairment assessment include a significant decline in the observable market value of an asset, a significant change in the extent or manner in which an asset is used, or a significant adverse change that would indicate that the carrying amount of an asset or group of assets is not recoverable. Determination of recoverability is based on an estimate of undiscounted future cash flows resulting from the use of the asset and its eventual disposition. In the event that such cash flows are not expected to be sufficient to recover the carrying amount of the assets, the assets are written ‑down to their estimated fair values. Long ‑lived assets to be disposed of are carried at fair value less costs to sell them. Revenue Recognition Collaborative Arrangements The Company has entered into collaboration agreements with pharmaceutical companies including Ortho-McNeil-Janssen Pharmaceuticals, Inc. and Janssen Pharmaceutica International, a division of Cilag International AG ("Janssen") for INVEGA ® SUSTENNA ® /XEPLION ® and INVEGA TRINZA ® as well as RISPERDAL ® CONSTA ® , Acorda Therapeutics, Inc. ("Acorda") for AMPYRA ® /FAMPYRA ® and AstraZeneca for BYDUREON ® . Substantially all of the products developed under the Company’s collaborative arrangements are currently being marketed as approved products. The Company receives payments for manufacturing services and/or royalties on product sales. Manufacturing revenues —The Company recognizes manufacturing revenues from the sale of products it manufactures for resale by its collaborative partners. Manufacturing revenues are recognized when persuasive evidence of an arrangement exists, delivery has occurred and title to the product and associated risk of loss has passed to the customer, the sales price is fixed or determinable and collectability is reasonably assured. The sales price for certain of the Company’s manufacturing revenues is based on the end-market sales price earned by its collaborative partners. As the end-market sale occurs after the Company has shipped its product and the risk of loss has passed to its collaborative partner, the Company estimates the sales price for such products based on information supplied to it by the Company’s collaborative partners, its historical transaction experience and other third-party data. Differences between actual manufacturing revenues and estimated manufacturing revenues are reconciled and adjusted for in the period in which they become known, which is generally the following quarter. The difference between actual and estimated manufacturing revenues has not been material. Royalty revenues —The Company recognizes royalty revenues related to the sale of products by its collaborative partners that incorporates the Company's technologies. Royalties, with the exception of those from AMPYRA, are earned under the terms of a license agreement in the period the products are sold by the Company's collaborative partner and collectability is reasonably assured. Royalties on AMPYRA are earned in the period the product is shipped to Acorda. Certain of the Company's royalty revenues are recognized by the Company based on information supplied to the Company by its collaborative partners and require estimates to be made. Differences between actual royalty revenues and estimated royalty revenues are reconciled and adjusted for in the period in which they become known, which is generally the following quarter. The difference between actual and estimated royalty revenues has not been material. Research and development revenue —R&D revenue consists of funding that compensates the Company for formulation, pre ‑clinical and clinical testing under R&D arrangements with its collaborative partners. The Company generally bills its collaborative partners under R&D arrangements using a full ‑time equivalent (“FTE”) or hourly rate, plus direct external costs, if any. Certain of the Company’s collaboration agreements entitle it to additional payments upon the achievement of performance ‑based milestones. Milestones that involve substantial effort on the Company’s part and the achievement of which are not considered probable at the inception of the collaboration are considered “substantive milestones,” and are recognized in their entirety in the period in which the milestone is achieved. Consideration received from the achievement of milestones that are not considered to be “substantive milestones” are included with other collaboration consideration, such as upfront payments and research funding, and are recognized under the proportional performance method whereby revenue is limited to the lesser of the cumulative amount of payments received or the cumulative amount of revenue earned. Product Sales, Net The Company’s product sales consist of sales of VIVITROL ® , and upon its approval by the U.S. Federal Drug Administration (“FDA”) in October 2015, ARISTADA ® , in the U.S. to wholesalers, specialty distributors and specialty pharmacies. Product sales are recognized when persuasive evidence of an arrangement exists, title to the product and associated risk of loss has passed to the customer, which is considered to occur when the product has been received by the customer, the sales price is fixed or determinable and collectability is reasonably assured. The Company records its product sales net of the following significant categories of sales discounts and allowances as a reduction of product sales at the time of shipment: · Medicaid rebates —relates to the Company’s estimated obligations to states under established reimbursement arrangements. Rebate accruals are recorded in the same period the related revenue is recognized, resulting in a reduction of product revenue and the establishment of a liability which is included in other current liabilities. The Company’s liability for Medicaid rebates consists of estimates for claims that a state will make for the current quarter, claims for prior quarters that have been estimated for which an invoice has not been received, invoices received for claims from the prior quarters that have not been paid, and an estimate of potential claims that will be made for inventory that exists in the distribution channel at period end; · Chargebacks —wholesaler and specialty pharmacy chargebacks are discounts that occur when contracted customers purchase directly from an intermediary wholesale purchaser. Contracted customers, which consist primarily of federal government agencies purchasing under the federal supply schedule, generally purchase the product at its contracted price, plus a mark ‑up from the wholesaler. The wholesaler, in ‑turn, charges back to the Company the difference between the price initially paid by the wholesaler and the contracted price paid to the wholesaler by the customer. The allowance for chargebacks is based on actual and expected utilization of these programs. Chargebacks could exceed historical experience and the Company’s estimates of future participation in these programs. To date, actual chargebacks have not differed materially from the Company’s estimates; · Product Discounts —cash consideration, including sales incentives, given by us under distribution service agreements with a number of wholesaler, distributor and specialty pharmacy customers that provide them with the opportunity to earn discounts in exchange for the performance of certain services. To date, actual product discounts have not differed materially from the Company’s estimates; · Co ‑pay Assistance —the Company has a program whereby a patient can receive monetary assistance each month toward their product co ‑payment, co ‑ insurance or deductible, provided the patient meets certain eligibility criteria. Reserves are recorded upon the product sale. To date, actual co ‑pay assistance has not differed materially from the Company’s estimates; and · Product Returns —the Company records a reserve for future product returns on gross product sales. This estimate is based on historical return rates as well as specifically identified anticipated returns due to known business conditions and product expiry dates. Return amounts are recorded as a deduction to arrive at product sales, net. Once product is returned, it is destroyed. At December 31, 2015, the product return reserve was estimated to be approximately 1.5% of product sales and amounted to $6.7 million. Other The Company recognizes revenues from the license and the sale of intellectual property, deemed to have standalone value, when persuasive evidence of an arrangement exists, delivery has occurred, the sales price is fixed or determinable and collectibility is reasonably assured. The Company considers delivery to have occurred when the buyer has use of, and is able to benefit from, the intellectual property and the Company has no remaining obligations under the arrangement. Foreign Currency The Company's functional and reporting currency is the U.S. dollar. Transactions in foreign currencies are recorded at the exchange rate prevailing on the date of the transaction. The resulting monetary assets and liabilities are translated into U.S. dollars at exchange rates prevailing on the subsequent balance sheet date. Gains and losses as a result of translation adjustments are recorded within "Other income (expense), net" in the accompanying consolidated statements of operations and comprehensive (loss) income. During the years ended December 31, 2015 and 2014 and the nine months ended December 31, 2013, the Company recorded a gain on foreign currency translation of $1.4 million $0.6 million and $0.2 million, respectively. Concentrations Financial instruments that potentially subject the Company to concentrations of credit risk are accounts receivable and marketable securities. Billings to large pharmaceutical companies account for the majority of the Company's accounts receivable, and collateral is generally not required from these customers. To mitigate credit risk, the Company monitors the financial performance and credit worthiness of its customers. The following represents revenue and receivables from the Company's customers exceeding 10% of the total in each category as of December 31, 2015, 2014 and 2013 and for the years ended December 31, 2015 and 2014 and the nine months ended December 31, 2013: Year Ended Year Ended Nine Months Ended December 31, 2015 December 31, 2014 December 31, 2013 Customer Receivables Revenue Receivables Revenue Receivables Revenue Janssen % % % % % % Acorda — % % % % % % The Company holds its interest ‑bearing investments with major financial institutions and, in accordance with documented investment policies, the Company limits the amount of credit exposure to any one financial institution or corporate issuer. The Company’s investment objectives are, first, to assure liquidity and conservation of capital and, second, to obtain investment income. Geographic Information Company revenues by geographic location, as determined by the location of the customer, and the location of its assets, are as follows: Year Ended Year Ended Nine Months Ended (In thousands) December 31, 2015 December 31, 2014 December 31, 2013 Revenue by region: U.S. $ $ $ Ireland Rest of world Assets by region: Current assets: U.S. $ $ $ Ireland Rest of world Long-term assets: U.S.: Intangible assets $ — $ — $ — Goodwill — Other Ireland: Intangible assets $ $ $ Goodwill Other Research and Development Expenses For each of its R&D programs, the Company incurs both external and internal expenses. External R&D expenses include costs related to clinical and non ‑clinical activities performed by contract research organizations, consulting fees, laboratory services, purchases of drug product materials and third ‑party manufacturing development costs. Internal R&D expenses include employee ‑related expenses, occupancy costs, depreciation and general overhead. The Company tracks external R&D expenses for each of its development programs, however, internal R&D expenses are not tracked by individual program as they benefit multiple programs or its technologies in general. Selling, General and Administrative Expenses Selling, general and administrative expenses are primarily comprised of employee-related expenses associated with sales and marketing, finance, human resources, legal, information technology and other administrative personnel, outside marketing, advertising and legal expenses and other general and administrative costs. Advertising costs are expensed as incurred. During the years ended December 31, 2015 and 2014 and the nine months ended December 31, 2013, advertising costs totaled $10.6 million, $8.6 million and $5.3 million, respectively. Share ‑Based Compensation The Company’s share ‑based compensation programs grant awards which include stock options and restricted stock units (“RSUs”), which vest with the passage of time and, to a limited extent, vest based on the achievement of certain performance criteria. The Company issues new shares upon stock option exercise or the vesting of RSUs. Certain of the Company’s employees are retirement eligible under the terms of the Company’s stock option plans (the “Plans”), and stock option awards to these employees generally vest in full upon retirement. Since there are no effective future service requirements for these employees, the fair value of these awards is expensed in full on the grant date or upon meeting the retirement eligibility criteria, whichever is later. Stock Options Stock option grants to employees expire ten years from the grant date and generally vest one ‑fourth per year over four years from the anniversary of the date of grant, provided the employee remains continuously employed with the Company, except as otherwise provided in the plan. Stock option grants to directors are for ten ‑year terms and generally vest over a one ‑year period provided the director continues to serve on the Company’s board of directors through the vesting date, except as otherwise provided in the plan. The estimated fair value of options is recognized over the requisite service period, which is generally the vesting period. Share ‑based compensation expense is based on awards ultimately expected to vest. Forfeitures are estimated based on historical experience at the time of grant and revised in subsequent periods if actual forfeitures differ from those estimates. The fair value of stock option grants is based on estimates as of the date of grant using a Black ‑Scholes option valuation model. The Company uses historical data as the basis for estimating option terms and forfeitures. Separate groups of employees that have similar historical stock option exercise and forfeiture behavior are considered separately for valuation purposes. The ranges of expected terms disclosed below reflect different expected behavior among certain groups of employees. Expected stock volatility factors are based on a weighted average of implied volatilities from traded options on the Company’s ordinary shares and historical share price volatility of the Company’s ordinary shares, which is determined based on a review of the weighted average of historical daily price changes of the Company’s ordinary shares. The risk ‑free interest rate for periods commensurate with the expected term of the share option is based on the U.S. treasury yield curve in effect at the time of grant. The dividend yield on the Company’s ordinary shares is estimated to be zero as the Company has not paid and does not expect to pay dividends. The exercise price of options granted is equal to the closing price of the Company’s ordinary shares traded on the NASDAQ Global Select Stock Market on the date of grant. The fair value of each stock option grant was estimated on the grant date with the following weighted ‑average assumptions: Year Ended Year Ended Nine Months Ended December 31, 2015 December 31, 2014 December 31, 2013 Expected option term 5 - 7 years 5 - 7 years 5 - 7 years Expected stock volatility 38 % - 46 % 39 % - 46 % 45 % - 48 % Risk-free interest rate 1.29 % - 2.02 % 1.46 % - 2.24 % 0.75 % - 2.15 % Expected annual dividend yield — — — Time ‑Vested Restricted Stock Units Time ‑vested RSUs awarded to employees generally vest one ‑fourth per year over four years from the anniversary of the date of grant, provided the employee remains continuously employed with the Company. Shares of the Company’s ordinary shares are delivered to the employee upon vesting, subject to payment of applicable withholding taxes. The fair value of time ‑vested RSUs is equal to the closing price of the Company’s ordinary shares traded on the NASDAQ Global Select Stock Market on the date of grant. Compensation expense, including the effect of forfeitures, is recognized over the applicable service period. Performance-Based Restricted Stock Units Performance-based RSUs awarded to employees vest upon the achievement of certain performance criteria. The estimated fair value of these RSUs is based on the market value of the Company’s stock on the date of grant. Compensation expense for performance-based RSUs is recognized from the moment the Company determines the performance criteria will be met to the date the Company deems the event is likely to occur. Cumulative adjustments are recorded quarterly to reflect subsequent changes in the estimate outcome of performance-related conditions until the date results are determined. Income Taxes The Company recognizes income taxes under the asset and liability method. Deferred income taxes are recognized for differences between the financial reporting and tax bases of assets and liabilities at enacted statutory tax rates in effect for the years in which the differences are expected to reverse. The effect on deferred taxes of a change in tax rates is recognized in income in the period that includes the enactment dat |