SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)	12 Months Ended
Dec. 31, 2021
Accounting Policies [Abstract]
BASIS OF PRESENTATION	BASIS OF PRESENTATION The accompanying consolidated financial statements include the accounts of AptarGroup, Inc. and our subsidiaries. The terms “AptarGroup”, “Aptar”, “Company”, “we”, “us” or “our” as used herein refer to AptarGroup, Inc. and our subsidiaries. All significant intercompany accounts and transactions have been eliminated. Certain previously reported amounts have been reclassified to conform to the current period presentation. AptarGroup’s organizational structure consists of three market-focused business segments which are Pharma, Beauty + Home and Food + Beverage. This is a strategic structure which allows us to be more closely aligned with our customers and the markets in which they operate. In late 2017, we began a business transformation plan to drive profitable sales growth, increase operational excellence, enhance our approach to innovation and improve organizational effectiveness (see Note 21 – Restructuring Initiatives for further details). The primary focus of the plan is the Beauty + Home segment; however, certain global general and administrative functions have also been addressed. During 2021, 2020 and 2019, we recognized approximately $23.2 million, $26.5 million and $20.5 million, respectively, of restructuring costs related to this plan. As of December 31, 2021, we have successfully completed the vast majority of our planned initiatives related to this plan and do not expect any significant, additional restructuring expenses related to this plan. Beginning July 1, 2018, we have applied highly inflationary accounting for our Argentinian subsidiary pursuant to U.S. GAAP. We have changed the functional currency from the Argentinian peso to the U.S. dollar. We remeasure our peso denominated assets and liabilities using the official rate. In September 2019, the President of Argentina reinstituted exchange controls restricting foreign currency purchases in an attempt to stabilize Argentina’s financial markets. As a result of these currency controls, a legal mechanism known as the Blue Chip Swap emerged in Argentina for reporting entities to transfer U.S. dollars. The Blue Chip Swap rate has diverged significantly from Argentina’s “official rate” due to the economic environment. During the second quarter of 2020, we transferred U.S. dollars into Argentina through the Blue Chip Swap method and we recognized a gain of $1.0 million. This gain helped to offset foreign currency losses due to our Argentinian peso exposure and devaluation against the U.S. dollar. During the third quarter of 2021, we utilized the Blue Chip Swap and recognized a gain of $1.4 million. Our Argentinian operations contributed less than 2.0% of consolidated net assets and revenues at and for the year ended December 31, 2021. The extent to which the COVID-19 pandemic impacts our financial results and operations for fiscal year 2022 and going forward for all three of our business segments will depend on future developments which are highly uncertain and cannot be predicted, including the availability, adoption, and efficacy of vaccines and boosters, the length of time it takes for normal economic and operating conditions to resume, additional governmental actions that may be taken and/or extended in response to any further resurgence of the virus and numerous other uncertainties. No impairments were recorded as of December 31, 2021 related to the COVID-19 pandemic. However, due to the general uncertainty surrounding the situation, including areas such as cost inflation, supply chain disruptions, and labor shortages, future results could be negatively affected by the pandemic and therefore our results could be materially impacted.
ACCOUNTING ESTIMATES	ACCOUNTING ESTIMATES The financial statements are prepared in conformity with accounting principles generally accepted in the United States of America (“U.S. GAAP”). This process requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the reporting period. Actual results could differ from those estimates.
CASH AND CASH EQUIVALENTS	CASH AND CASH EQUIVALENTS We consider all investments that are readily convertible to known amounts of cash with an original maturity of three months or less when purchased to be cash equivalents.
ACCOUNTS RECEIVABLE AND CURRENT EXPECTED CREDIT LOSSES	ACCOUNTS RECEIVABLE AND CURRENT EXPECTED CREDIT LOSSES At December 31, 2021, we reported $671 million of accounts receivable, net of CECL of $7.4 million. The allowance is estimated using reasonable and supportable information that is available at the reporting date about past events, current conditions and forecasts of future economic conditions. Changes in CECL were not material for the year ended December 31, 2021.
INVENTORIES	INVENTORIES Inventories are stated at lower of cost or net realizable value. Cost of our inventories is determined by costing methods that approximate a first-in, first-out ("FIFO") basis. Costs included in inventories are raw materials, direct labor and manufacturing overhead.
ACQUISITIONS	ACQUISITIONS We account for business combinations using the acquisition method, which requires management to estimate the fair value of identifiable assets acquired and liabilities assumed, and to properly allocate purchase price consideration to the individual assets acquired and liabilities assumed. Goodwill is measured as the excess amount of consideration transferred, compared to fair value of the assets acquired and the liabilities assumed. The allocation of the purchase price utilizes significant estimates and assumptions in determining the fair values of identifiable assets acquired and liabilities assumed, especially with respect to intangible assets. These estimates are based on all available information and in some cases assumptions with respect to the timing and amount of future revenues and expenses associated with an asset and are reviewed by consulting with outside valuation experts. The purchase price allocation for business acquisitions contains uncertainties because it requires management's judgment.
INVESTMENTS IN EQUITY SECURITIES	INVESTMENTS IN EQUITY SECURITIES We account for our 20% to 50% owned investments using the equity method. Equity investments that do not result in consolidation and are not accounted for under the equity method are measured at fair value. Any related changes in fair value is recognized in net income unless the investments qualify for a practicality exception. There were no dividends received from affiliated companies in 2021, 2020 and 2019.
PROPERTY AND DEPRECIATION	PROPERTY AND DEPRECIATION Properties are stated at cost. Depreciation is determined on a straight-line basis over the estimated useful lives for financial reporting purposes and accelerated methods for income tax reporting. Generally, the estimated useful lives are 10 to 40 years for buildings and improvements and 3 to 15 years for machinery and equipment.
FINITE-LIVED INTANGIBLE ASSETS	FINITE-LIVED INTANGIBLE ASSETS Finite-lived intangibles, consisting of patents, acquired technology, customer relationships, trademarks and trade names and license agreements acquired in purchase transactions, are capitalized and amortized over their useful lives which range from 1 to 50 years.
IMPAIRMENT OF LONG-LIVED ASSETS	IMPAIRMENT OF LONG-LIVED ASSETS Long-lived assets, such as property, plant and equipment and finite-lived intangibles, are evaluated for impairment whenever events or changes in circumstances indicate that the carrying value of an asset may not be recoverable. An impairment loss is recognized when estimated undiscounted future cash flows expected to result from the use of the asset plus net proceeds expected from disposition of the asset (if any) are less than the carrying value of the asset.
GOODWILL	GOODWILL The Company has evaluated the excess of purchase price over the fair value of the net assets acquired (“goodwill”) for impairment annually as of October 1 or more frequently if impairment indicators arose in accordance with Accounting Standards Codification (“ASC”) Topic 350, “Intangibles - Goodwill and Other.” We believe that the accounting estimates related to determining the fair value of our reporting units is a critical accounting estimate because: (1) it is highly susceptible to change from period to period because it requires management to make assumptions about the future cash flows for each reporting unit over several years, and (2) the impact that recognizing an impairment would have on the assets reported on our balance sheet as well as our results of operations could be material. Management’s determination of the fair value of our reporting units, based on future cash flows for the reporting units, requires significant judgment and the use of estimates and assumptions related to projected revenue growth rates, the terminal growth factor, as well as the discount rate. Actual cash flows in the future may differ significantly from those forecasted today. The estimates and assumptions for future cash flows and its impact on the impairment testing of goodwill is a critical accounting estimate. Management believes goodwill in purchase transactions has continuing value. Goodwill is not amortized and must be tested annually, or more frequently as circumstances dictate, for impairment. The annual goodwill impairment test may first consider qualitative factors to determine whether it is more likely than not (i.e., greater than 50 percent chance) that the fair value of a reporting unit is less than its book value. This is sometimes referred to as the “step zero” approach and is an optional step in the annual goodwill impairment analysis. Management has performed this qualitative assessment as of October 1, 2021 and October 1, 2020 for each of our reporting units. Based on our review of macroeconomic, industry, and market events and circumstances as well as the overall financial performance of the reporting units, we determined that it was more likely than not that the fair value of these reporting units was greater than their carrying amounts and therefore no impairment of goodwill is required.
DERIVATIVES INSTRUMENTS AND HEDGING ACTIVITIES	DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES Derivative financial instruments are recorded in the Consolidated Balance Sheets at fair value as either assets or liabilities. Changes in the fair value of derivatives are recorded in each period in earnings or other comprehensive income, depending on whether a derivative is designated and effective as part of a hedge transaction.
RETIREMENT OF COMMON STOCK	RETIREMENT OF COMMON STOCK During 2021 and 2019, we repurchased 615 thousand and 779 thousand shares, respectively, all of which were returned to treasury stock. In 2020, we did not repurchase any shares of our common stock. If retired, common stock is reduced by the number of shares retired at $0.01 par value per share. We allocate the excess purchase price over par value between additional paid-in capital and retained earnings.
RESEARCH & DEVELOPMENT EXPENSES	RESEARCH & DEVELOPMENT EXPENSES Research and development costs, net of any customer funded research and development or government research and development credits, are expensed as incurred. These costs amounted to $99.8 million, $92.5 million and $82.8 million in 2021, 2020 and 2019, respectively.
INCOME TAXES	INCOME TAXES We compute taxes on income in accordance with the tax rules and regulations of the many taxing authorities where the income is earned. The income tax rates imposed by these taxing authorities may vary substantially. Taxable income may differ from pre-tax income for U.S. GAAP financial accounting purposes. To the extent that these differences create timing differences between the tax basis of an asset or liability and its reported amount in the U.S. GAAP financial statements, an appropriate provision for deferred income taxes is made. With the exception of pre-2020 earnings in Italy, Switzerland, and Colombia, we maintain our assertion that the cash and distributable reserves at our non-U.S. affiliates are indefinitely reinvested. Under current U.S. tax laws, all of our non-U.S. earnings are subject to U.S. taxation on a current or deferred basis. We will provide for the necessary withholding tax, local income taxes, and U.S. federal and state income tax when management decides that an affiliate should make a distribution. These decisions are made taking into consideration the financial requirements of the non-U.S. affiliates and our global cash management goals. We provide a liability for the amount of unrecognized tax benefits from uncertain tax positions. This liability is provided whenever we determine that a tax benefit will not meet a more-likely-than-not threshold for recognition. See Note 6 – Income Taxes for more information. We are subject to taxation and file income tax returns in the U.S. federal jurisdiction and many state and foreign jurisdictions. We believe that an adequate provision has been made for any adjustments that may result from tax examinations. However, the outcome of tax audits cannot be predicted with certainty. If any issues addressed in our tax audits are resolved in a manner inconsistent with our expectations, we could be required to adjust our provision for income taxes in the period such resolution occurs. The resolution of each of these audits is not expected to be material to our Consolidated Financial Statements.
TRANSLATION OF FOREIGN CURRENCIES	TRANSLATION OF FOREIGN CURRENCIES The functional currencies of the majority of our foreign operations are the local currencies. Assets and liabilities of our foreign operations are translated into U.S. dollars at the rates of exchange on the balance sheet date. Sales and expenses are translated at the average rates of exchange prevailing during the year. The related translation adjustments are accumulated in a separate section of Stockholders’ Equity. Realized and unrealized foreign currency transaction gains and losses are reflected in income, as a component of miscellaneous income and expense, and represented losses of $1.4 million, $5.6 million and $1.9 million in 2021, 2020 and 2019, respectively.
STOCK BASED COMPENSATION	STOCK-BASED COMPENSATION Accounting standards require the application of the non-substantive vesting approach which means that an award is fully vested when the employee’s retention of the award is no longer contingent on providing future service. Under this approach, compensation costs are recognized over the requisite service period of the award instead of ratably over the vesting period stated in the grant. As such, costs are recognized immediately if the employee is retirement eligible on the date of grant or over the period from the date of grant until retirement eligibility if retirement eligibility is reached before the end of the vesting period stated in the grant. Forfeitures are recognized as they occur. See Note 16 – Stock-Based Compensation for more information.
REVENUE RECOGNITION	REVENUE RECOGNITION At inception of customer contracts, we assess the goods and services promised in order to identify a performance obligation for each promise to transfer a good or service (or bundle of goods or services) that is distinct. To identify the performance obligations, we consider all the goods or services promised in the contract, whether explicitly stated or implied based on customary business practices. For a contract that has more than one performance obligation, we allocate the total contract consideration to each distinct performance obligation on a relative standalone selling price basis. Revenue is recognized when (or as) the performance obligations are satisfied (i.e., when the customer obtains control of the good or service). The majority of our revenues are derived from product, tooling and service contract sales; however, we also receive revenues from license, exclusivity and royalty arrangements, which collectively are not material to the results. See specific discussions about methods of accounting for control transfers of product, tooling and service contract sales in Note 2 – Revenue.
LEASES	LEASES We determine if an arrangement is a lease at inception. Operating lease assets are included in operating lease right-of-use (“ROU”) assets and operating lease liabilities are included in accounts payable accrued and other liabilities in our Consolidated Balance Sheets. Finance leases are included in property, plant and equipment, current maturities of long-term obligations and long-term obligations in our Consolidated Balance Sheets. ROU assets represent our right to use an underlying asset for the lease term and lease liabilities represent our obligation to make lease payments arising from the lease. Operating lease ROU assets and liabilities are recognized at commencement date based on the present value of lease payments over the lease term. We use the implicit rate when readily determinable. As most of our leases do not provide an implicit rate, we use our incremental borrowing rate based on the information available at the commencement date of the lease in determining the present value of lease payments. The operating lease ROU asset includes any lease payments made as well as initial direct costs incurred and excludes lease incentives. Our lease terms may include options to extend or terminate the lease when it is reasonably certain that we will exercise that option. Lease expense for operating lease payments is recognized on a straight-line basis over the lease term. We have lease agreements with lease and non-lease components, which are generally accounted for separately. For certain equipment leases, we account for the lease and non-lease components as a single lease component. We have elected not to recognize right-of-use assets and lease liabilities that arise from short-term leases (a lease whose term is 12 months or less and does not include a purchase option that we are reasonably certain to exercise). Certain vehicle lease contracts include guaranteed residual value that is considered in the determination of lease classification. The probability of having to satisfy a residual value guarantee is not considered for the purpose of lease classification, but is considered when measuring a lease liability.
GOVERNMENT GRANTS	GOVERNMENT GRANTS We record non-reimburseable government grants when there is reasonable assurance that we will comply with the relevant conditions of the grant agreement and the grant funds will be received. When a grant is received toward the purchase or construction of an asset, the funds received are recorded as a contra-asset and deducted from the cost of the related asset. Additionally, we record expense net of reimbursements for government grants from a reimbursement of cost. During 2021, we received $2.0 million for a government grant to be used toward the construction of a new operating facility. This award will support expanded domestic production capacity for our active material science solutions proprietary Activ-Film technology, which is used to protect and enhance COVID-19 test kit integrity and accuracy. Under the terms of the grant agreement, the U.S. government will fund approximately $19 million to build an operating facility, for which there is no clawback provision, in exchange for the new facility to be on standby for the government for a period of 16 months after construction. As of December 31, 2021, we recorded the $2.0 million received in 2021 as a contra-asset within property, plant and equipment in the Consolidated Balance Sheets and reported in the proceeds from government grants within the investing section of the Consolidated Statements of Cash Flows.
ADOPTION OF RECENT ACCOUNTING PRONOUNCEMENTS	ADOPTION OF RECENT ACCOUNTING PRONOUNCEMENTS Changes to U.S. GAAP are established by the Financial Accounting Standards Board (“FASB”) in the form of Accounting Standards Updates (“ASUs”) to the FASB’s Accounting Standards Codification. In June 2016, the FASB issued ASU 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments, as well as the clarifying amendments subsequently issued. We applied the guidance using a modified retrospective approach and accordingly recognized an amount of $1.4 million as the cumulative adjustment to opening retained earnings in the first quarter of 2020. This is based on management's best estimates of specific losses on individual exposures particularly on current trade receivables, as well as the time value of money and reasonable and supportable information that is available at the reporting date about past events, current conditions and forecasts of future economic conditions. On an ongoing basis, we will contemplate forward-looking economic conditions in recording lifetime expected credit losses for our financial assets measured at cost, such as our trade receivables and certain other assets. In November 2021, the FASB issued ASU 2021-10, Government Assistance (Topic 832): Disclosures by Business Entities about Government Assistance. This update requires annual disclosures about transactions with a government that are accounted for by applying a grant or contribution accounting model by analogy including the nature of the transaction, the financial statement line items affected by the transaction and any significant terms and conditions associated with the transactions. We adopted this guidance in the fourth quarter of 2021 using the prospective approach. In March 2020, the FASB issued ASU 2020-04, which provides optional expedients and exceptions for applying U.S. GAAP to contracts, hedging relationships and other transactions affected by reference rate reform if certain criteria are met. The amendments to this update apply only to contracts, hedging relationships and other transactions that reference LIBOR or another reference rate expected to be discontinued because of reference rate reform. ASU 2020-04 was further amended in January 2021 by ASU 2021-01 which clarified the applicability of certain provisions. Both standards are effective upon issuance and can be adopted any time prior to December 31, 2022. The guidance in ASU 2020-04 and ASU 2021-01 is optional and may be elected over time as reference rate reform activities occur. As of December 31, 2021, we have amended the revolving credit facility to provide mechanics relating to a transition away from LIBOR (in the case of USD) and the designated benchmark rates for other available currencies and the replacement of any such applicable benchmark by a replacement alternative benchmark rate or mechanism for loans made in the applicable currency. We are evaluating any further impact this standard may have on our Consolidated Financial Statements and anticipate no further significant impacts. Other accounting standards that have been issued by the FASB or other standards-setting bodies did not have a material impact on our consolidated financial statements.

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)

12 Months Ended

Dec. 31, 2021

The accompanying consolidated financial statements include the accounts of AptarGroup, Inc. and our subsidiaries. The terms “AptarGroup”, “Aptar”, “Company”, “we”, “us” or “our” as used herein refer to AptarGroup, Inc. and our subsidiaries. All significant intercompany accounts and transactions have been eliminated. Certain previously reported amounts have been reclassified to conform to the current period presentation.

AptarGroup’s organizational structure consists of three market-focused business segments which are Pharma, Beauty + Home and Food + Beverage. This is a strategic structure which allows us to be more closely aligned with our customers and the markets in which they operate.

In late 2017, we began a business transformation plan to drive profitable sales growth, increase operational excellence, enhance our approach to innovation and improve organizational effectiveness (see Note 21 – Restructuring Initiatives for further details). The primary focus of the plan is the Beauty + Home segment; however, certain global general and administrative functions have also been addressed. During 2021, 2020 and 2019, we recognized approximately $23.2 million, $26.5 million and $20.5 million, respectively, of restructuring costs related to this plan. As of December 31, 2021, we have successfully completed the vast majority of our planned initiatives related to this plan and do not expect any significant, additional restructuring expenses related to this plan.

Beginning July 1, 2018, we have applied highly inflationary accounting for our Argentinian subsidiary pursuant to U.S. GAAP. We have changed the functional currency from the Argentinian peso to the U.S. dollar. We remeasure our peso denominated assets and liabilities using the official rate. In September 2019, the President of Argentina reinstituted exchange controls restricting foreign currency purchases in an attempt to stabilize Argentina’s financial markets. As a result of these currency controls, a legal mechanism known as the Blue Chip Swap emerged in Argentina for reporting entities to transfer U.S. dollars. The Blue Chip Swap rate has diverged significantly from Argentina’s “official rate” due to the economic environment. During the second quarter of 2020, we transferred U.S. dollars into Argentina through the Blue Chip Swap method and we recognized a gain of $1.0 million. This gain helped to offset foreign currency losses due to our Argentinian peso exposure and devaluation against the U.S. dollar. During the third quarter of 2021, we utilized the Blue Chip Swap and recognized a gain of $1.4 million. Our Argentinian operations contributed less than 2.0% of consolidated net assets and revenues at and for the year ended December 31, 2021.

The extent to which the COVID-19 pandemic impacts our financial results and operations for fiscal year 2022 and going forward for all three of our business segments will depend on future developments which are highly uncertain and cannot be predicted, including the availability, adoption, and efficacy of vaccines and boosters, the length of time it takes for normal economic and operating conditions to resume, additional governmental actions that may be taken and/or extended in response to any further resurgence of the virus and numerous other uncertainties. No impairments were recorded as of December 31, 2021 related to the COVID-19 pandemic. However, due to the general uncertainty surrounding the situation, including areas such as cost inflation, supply chain disruptions, and labor shortages, future results could be negatively affected by the pandemic and therefore our results could be materially impacted.

ACCOUNTING ESTIMATES

The financial statements are prepared in conformity with accounting principles generally accepted in the United States of America (“U.S. GAAP”). This process requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the reporting period. Actual results could differ from those estimates.

CASH AND CASH EQUIVALENTS

We consider all investments that are readily convertible to known amounts of cash with an original maturity of three months or less when purchased to be cash equivalents.

ACCOUNTS RECEIVABLE AND CURRENT EXPECTED CREDIT LOSSES

At December 31, 2021, we reported $671 million of accounts receivable, net of CECL of $7.4 million. The allowance is estimated using reasonable and supportable information that is available at the reporting date about past events, current conditions and forecasts of future economic conditions. Changes in CECL were not material for the year ended December 31, 2021.

INVENTORIES

Inventories are stated at lower of cost or net realizable value. Cost of our inventories is determined by costing methods that approximate a first-in, first-out ("FIFO") basis. Costs included in inventories are raw materials, direct labor and manufacturing overhead.

ACQUISITIONS

We account for business combinations using the acquisition method, which requires management to estimate the fair value of identifiable assets acquired and liabilities assumed, and to properly allocate purchase price consideration to the individual assets acquired and liabilities assumed. Goodwill is measured as the excess amount of consideration transferred, compared to fair value of the assets acquired and the liabilities assumed. The allocation of the purchase price utilizes significant estimates and assumptions in determining the fair values of identifiable assets acquired and liabilities assumed, especially with respect to intangible assets. These estimates are based on all available information and in some cases assumptions with respect to the timing and amount of future revenues and expenses associated with an asset and are reviewed by consulting with outside valuation experts. The purchase price allocation for business acquisitions contains uncertainties because it requires management's judgment.

INVESTMENTS IN EQUITY SECURITIES

We account for our 20% to 50% owned investments using the equity method. Equity investments that do not result in consolidation and are not accounted for under the equity method are measured at fair value. Any related changes in fair value is recognized in net income unless the investments qualify for a practicality exception. There were no dividends received from affiliated companies in 2021, 2020 and 2019.

PROPERTY AND DEPRECIATION

Properties are stated at cost. Depreciation is determined on a straight-line basis over the estimated useful lives for financial reporting purposes and accelerated methods for income tax reporting. Generally, the estimated useful lives are 10 to 40 years for buildings and improvements and 3 to 15 years for machinery and equipment.

FINITE-LIVED INTANGIBLE ASSETS

Finite-lived intangibles, consisting of patents, acquired technology, customer relationships, trademarks and trade names and license agreements acquired in purchase transactions, are capitalized and amortized over their useful lives which range from 1 to 50 years.

IMPAIRMENT OF LONG-LIVED ASSETS

Long-lived assets, such as property, plant and equipment and finite-lived intangibles, are evaluated for impairment whenever events or changes in circumstances indicate that the carrying value of an asset may not be recoverable. An impairment loss is recognized when estimated undiscounted future cash flows expected to result from the use of the asset plus net proceeds expected from disposition of the asset (if any) are less than the carrying value of the asset.

GOODWILL

The Company has evaluated the excess of purchase price over the fair value of the net assets acquired (“goodwill”) for impairment annually as of October 1 or more frequently if impairment indicators arose in accordance with Accounting Standards Codification (“ASC”) Topic 350, “Intangibles - Goodwill and Other.” We believe that the accounting estimates related to determining the fair value of our reporting units is a critical accounting estimate because: (1) it is highly susceptible to change from period to period because it requires management to make assumptions about the future cash flows for each reporting unit over several years, and (2) the impact that recognizing an impairment would have on the assets reported on our balance sheet as well as our results of operations could be material. Management’s determination of the fair value of our reporting units, based on future cash flows for the reporting units, requires significant judgment and the use of estimates and assumptions related to projected revenue growth rates, the terminal growth factor, as well as the discount rate. Actual cash flows in the future may differ significantly from those forecasted today. The estimates and assumptions for future cash flows and its impact on the impairment testing of goodwill is a critical accounting estimate.

Management believes goodwill in purchase transactions has continuing value. Goodwill is not amortized and must be tested annually, or more frequently as circumstances dictate, for impairment. The annual goodwill impairment test may first consider qualitative factors to determine whether it is more likely than not (i.e., greater than 50 percent chance) that the fair value of a reporting unit is less than its book value. This is sometimes referred to as the “step zero” approach and is an optional step in the annual goodwill impairment analysis. Management has performed this qualitative assessment as of October 1, 2021 and October 1, 2020 for each of our reporting units. Based on our review of macroeconomic, industry, and market events and circumstances as well as the overall financial performance of the reporting units, we determined that it was more likely than not that the fair value of these reporting units was greater than their carrying amounts and therefore no impairment of goodwill is required.

DERIVATIVES INSTRUMENTS AND HEDGING ACTIVITIES

DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES

Derivative financial instruments are recorded in the Consolidated Balance Sheets at fair value as either assets or liabilities. Changes in the fair value of derivatives are recorded in each period in earnings or other comprehensive income, depending on whether a derivative is designated and effective as part of a hedge transaction.

RETIREMENT OF COMMON STOCK

During 2021 and 2019, we repurchased 615 thousand and 779 thousand shares, respectively, all of which were returned to treasury stock. In 2020, we did not repurchase any shares of our common stock. If retired, common stock is reduced by the number of shares retired at $0.01 par value per share. We allocate the excess purchase price over par value between additional paid-in capital and retained earnings.

RESEARCH & DEVELOPMENT EXPENSES

Research and development costs, net of any customer funded research and development or government research and development credits, are expensed as incurred. These costs amounted to $99.8 million, $92.5 million and $82.8 million in 2021, 2020 and 2019, respectively.

INCOME TAXES

We compute taxes on income in accordance with the tax rules and regulations of the many taxing authorities where the income is earned. The income tax rates imposed by these taxing authorities may vary substantially. Taxable income may differ from pre-tax income for U.S. GAAP financial accounting purposes. To the extent that these differences create timing differences between the tax basis of an asset or liability and its reported amount in the U.S. GAAP financial statements, an appropriate provision for deferred income taxes is made.

With the exception of pre-2020 earnings in Italy, Switzerland, and Colombia, we maintain our assertion that the cash and distributable reserves at our non-U.S. affiliates are indefinitely reinvested. Under current U.S. tax laws, all of our non-U.S. earnings are subject to U.S. taxation on a current or deferred basis. We will provide for the necessary withholding tax, local income taxes, and U.S. federal and state income tax when management decides that an affiliate should make a distribution. These decisions are made taking into consideration the financial requirements of the non-U.S. affiliates and our global cash management goals.

We provide a liability for the amount of unrecognized tax benefits from uncertain tax positions. This liability is provided whenever we determine that a tax benefit will not meet a more-likely-than-not threshold for recognition. See Note 6 – Income Taxes for more information.

We are subject to taxation and file income tax returns in the U.S. federal jurisdiction and many state and foreign jurisdictions. We believe that an adequate provision has been made for any adjustments that may result from tax examinations. However, the outcome of tax audits cannot be predicted with certainty. If any issues addressed in our tax audits are resolved in a manner inconsistent with our expectations, we could be required to adjust our provision for income taxes in the period such resolution occurs. The resolution of each of these audits is not expected to be material to our Consolidated Financial Statements.

TRANSLATION OF FOREIGN CURRENCIES

The functional currencies of the majority of our foreign operations are the local currencies. Assets and liabilities of our foreign operations are translated into U.S. dollars at the rates of exchange on the balance sheet date. Sales and expenses are translated at the average rates of exchange prevailing during the year. The related translation adjustments are accumulated in a separate section of Stockholders’ Equity. Realized and unrealized foreign currency transaction gains and losses are reflected in income, as a component of miscellaneous income and expense, and represented losses of $1.4 million, $5.6 million and $1.9 million in 2021, 2020 and 2019, respectively.

STOCK BASED COMPENSATION

STOCK-BASED COMPENSATION

Accounting standards require the application of the non-substantive vesting approach which means that an award is fully vested when the employee’s retention of the award is no longer contingent on providing future service. Under this approach, compensation costs are recognized over the requisite service period of the award instead of ratably over the vesting period stated in the grant. As such, costs are recognized immediately if the employee is retirement eligible on the date of grant or over the period from the date of grant until retirement eligibility if retirement eligibility is reached before the end of the vesting period stated in the grant. Forfeitures are recognized as they occur. See Note 16 – Stock-Based Compensation for more information.

REVENUE RECOGNITION

At inception of customer contracts, we assess the goods and services promised in order to identify a performance obligation for each promise to transfer a good or service (or bundle of goods or services) that is distinct. To identify the performance obligations, we consider all the goods or services promised in the contract, whether explicitly stated or implied based on customary business practices. For a contract that has more than one performance obligation, we allocate the total contract consideration to each distinct performance obligation on a relative standalone selling price basis. Revenue is recognized when (or as) the performance obligations are satisfied (i.e., when the customer obtains control of the good or service). The majority of our revenues are derived from product, tooling and service contract sales; however, we also receive revenues from license, exclusivity and royalty arrangements, which collectively are not material to the results. See specific discussions about methods of accounting for control transfers of product, tooling and service contract sales in Note 2 – Revenue.

LEASES

We determine if an arrangement is a lease at inception. Operating lease assets are included in operating lease right-of-use (“ROU”) assets and operating lease liabilities are included in accounts payable accrued and other liabilities in our Consolidated Balance Sheets. Finance leases are included in property, plant and equipment, current maturities of long-term obligations and long-term obligations in our Consolidated Balance Sheets.

ROU assets represent our right to use an underlying asset for the lease term and lease liabilities represent our obligation to make lease payments arising from the lease. Operating lease ROU assets and liabilities are recognized at commencement date based on the present value of lease payments over the lease term. We use the implicit rate when readily determinable. As most of our leases do not provide an implicit rate, we use our incremental borrowing rate based on the information available at the commencement date of the lease in determining the present value of lease payments. The operating lease ROU asset includes any lease payments made as well as initial direct costs incurred and excludes lease incentives. Our lease terms may include options to extend or terminate the lease when it is reasonably certain that we will exercise that option. Lease expense for operating lease payments is recognized on a straight-line basis over the lease term.

We have lease agreements with lease and non-lease components, which are generally accounted for separately. For certain equipment leases, we account for the lease and non-lease components as a single lease component. We have elected not to recognize right-of-use assets and lease liabilities that arise from short-term leases (a lease whose term is 12 months or less and does not include a purchase option that we are reasonably certain to exercise).

Certain vehicle lease contracts include guaranteed residual value that is considered in the determination of lease classification. The probability of having to satisfy a residual value guarantee is not considered for the purpose of lease classification, but is considered when measuring a lease liability.

GOVERNMENT GRANTS

We record non-reimburseable government grants when there is reasonable assurance that we will comply with the relevant conditions of the grant agreement and the grant funds will be received. When a grant is received toward the purchase or construction of an asset, the funds received are recorded as a contra-asset and deducted from the cost of the related asset. Additionally, we record expense net of reimbursements for government grants from a reimbursement of cost.

During 2021, we received $2.0 million for a government grant to be used toward the construction of a new operating facility. This award will support expanded domestic production capacity for our active material science solutions proprietary Activ-Film technology, which is used to protect and enhance COVID-19 test kit integrity and accuracy. Under the terms of the grant agreement, the U.S. government will fund approximately $19 million to build an operating facility, for which there is no clawback provision, in exchange for the new facility to be on standby for the government for a period of 16 months after construction. As of December 31, 2021, we recorded the $2.0 million received in 2021 as a contra-asset within property, plant and equipment in the Consolidated Balance Sheets and reported in the proceeds from government grants within the investing section of the Consolidated Statements of Cash Flows.

ADOPTION OF RECENT ACCOUNTING PRONOUNCEMENTS

Changes to U.S. GAAP are established by the Financial Accounting Standards Board (“FASB”) in the form of Accounting Standards Updates (“ASUs”) to the FASB’s Accounting Standards Codification.

In June 2016, the FASB issued ASU 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments, as well as the clarifying amendments subsequently issued. We applied the guidance using a modified retrospective approach and accordingly recognized an amount of $1.4 million as the cumulative adjustment to opening retained earnings in the first quarter of 2020. This is based on management's best estimates of specific losses on individual exposures particularly on current trade receivables, as well as the time value of money and reasonable and supportable information that is available at the reporting date about past events, current conditions and forecasts of future economic conditions. On an ongoing basis, we will contemplate forward-looking economic conditions in recording lifetime expected credit losses for our financial assets measured at cost, such as our trade receivables and certain other assets.

In November 2021, the FASB issued ASU 2021-10, Government Assistance (Topic 832): Disclosures by Business Entities about Government Assistance. This update requires annual disclosures about transactions with a government that are accounted for by applying a grant or contribution accounting model by analogy including the nature of the transaction, the financial statement line items affected by the transaction and any significant terms and conditions associated with the transactions. We adopted this guidance in the fourth quarter of 2021 using the prospective approach.

In March 2020, the FASB issued ASU 2020-04, which provides optional expedients and exceptions for applying U.S. GAAP to contracts, hedging relationships and other transactions affected by reference rate reform if certain criteria are met. The amendments to this update apply only to contracts, hedging relationships and other transactions that reference LIBOR or another reference rate expected to be discontinued because of reference rate reform. ASU 2020-04 was further amended in January 2021 by ASU 2021-01 which clarified the applicability of certain provisions. Both standards are effective upon issuance and can be adopted any time prior to December 31, 2022. The guidance in ASU 2020-04 and ASU 2021-01 is optional and may be elected over time as reference rate reform activities occur. As of December 31, 2021, we have amended the revolving credit facility to provide mechanics relating to a transition away from LIBOR (in the case of USD) and the designated benchmark rates for other available currencies and the replacement of any such applicable benchmark by a replacement alternative benchmark rate or mechanism for loans made in the applicable currency. We are evaluating any further impact this standard may have on our Consolidated Financial Statements and anticipate no further significant impacts.

Other accounting standards that have been issued by the FASB or other standards-setting bodies did not have a material impact on our consolidated financial statements.