Summary of Significant Accounting Policies	12 Months Ended
Dec. 31, 2019
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Cash and Cash Equivalents The Company considers all highly liquid investments with a maturity of three months or less at the time of purchase to be cash equivalents. Accounts Receivable Accounts receivable are stated at historical carrying value, net of write-offs and allowances. The Company establishes allowances based upon historical experience and any specific customer collection issues identified by the Company. Uncollectible accounts receivable are written off when a settlement is reached or when the Company has determined the balance will not be collected. Inventories Inventories are stated at the lower of cost (using the first-in, first-out (FIFO) method) or net realizable value. Cost includes material, labor, and overhead. Fixed Assets Fixed assets which are owned are stated at cost less accumulated depreciation, and are depreciated on a straight-line basis over the estimated useful lives of the properties and equipment. Leasehold improvements and leased equipment are amortized over the shorter of the lives of the leases or the underlying assets. Maintenance and repair costs that do not improve service potential or extend economic life are expensed as incurred. Warranty The Company provides warranty terms based upon the type of product sold. The Company estimates the warranty accrual based upon various factors, including historical warranty costs, current trends, product mix, and sales. The accounting for warranty accruals requires the Company to make assumptions and judgments, and to the extent actual results differ from original estimates, adjustments to recorded accruals may be required. See Note 6 - Accrued Expenses and Other Current Liabilities for further detail. Income Taxes Deferred tax assets and liabilities are determined based on the temporary differences between the financial reporting and tax basis of assets and liabilities, applying enacted statutory tax rates in effect for the year in which the differences are expected to reverse. In assessing the realizability of deferred tax assets, management considers whether it is more likely than not that some portion or all the deferred tax assets will not be realized. The Tax Cuts and Jobs Act (the “TCJA”), enacted in 2017, created a new requirement that certain income earned by foreign subsidiaries, known as global intangible low-tax income (“GILTI”), must be included in the gross income of their U.S. shareholder. We have elected to account for GILTI tax in the year the tax is incurred. The Company accounts for uncertainty in tax positions by recognizing in its financial statements the impact of a tax position only if that position is more likely than not of being sustained on audit, based on the technical merits of the position. Further, the Company assesses the tax benefits of the tax positions in its financial statements based on experience with similar tax positions, information obtained during the examination process and the advice of experts. The Company recognizes previously unrecognized tax benefits upon the earlier of the expiration of the period to assess tax in the applicable taxing jurisdiction or when the matter is constructively settled and upon changes in statutes or regulations and new case law or rulings. The Company classifies interest and penalties related to income taxes as a component of income tax expense in its Consolidated Statements of Income. Goodwill Goodwill represents the excess of the total consideration given in an acquisition of a business over the fair value of the net tangible and identifiable intangible assets acquired. Goodwill is not amortized, but instead is tested at the reporting unit level for impairment annually in November, or more frequently if certain circumstances indicate a possible impairment may exist. In 2019 and 2018, the Company assessed qualitative factors of its reporting units to determine whether it was more likely than not the fair value of the reporting unit was less than its carrying amount, including goodwill. The qualitative impairment test consists of an assessment of qualitative factors, including general economic and industry conditions, market share and input costs. Other Intangible Assets Intangible assets with estimable useful lives are amortized over their respective estimated useful lives to their estimated residual values, and reviewed for impairment. Intangible assets are amortized using either an accelerated or straight-line method, whichever best reflects the pattern in which the estimated future economic benefits of the asset will be consumed. The useful lives of intangible assets are determined after considering the expected cash flows and other specific facts and circumstances related to each intangible asset. Intangible assets with indefinite lives are not amortized, but instead are tested for impairment annually in November, or more frequently if certain circumstances indicate a possible impairment may exist. Impairment of Long-Lived Assets Long-lived assets, other than goodwill, are tested for impairment when changes in circumstances indicate their carrying value may not be recoverable. A determination of impairment, if any, is made based on the undiscounted value of estimated future cash flows, salvage value or expected net sales proceeds, depending on the circumstances. Impairment is measured as the excess of the carrying value over the estimated fair value of such assets. Environmental Liabilities Accruals for environmental matters are recorded when it is probable a liability has been incurred and the amount of the liability can be reasonably estimated, based upon current law and existing technologies. These amounts, which are not discounted and are exclusive of claims against potentially responsible third parties, are adjusted periodically as assessment and remediation efforts progress or additional technical or legal information becomes available. Environmental exposures are difficult to assess for numerous reasons, including the identification of new sites, developments at sites resulting from investigatory studies and remedial activities, advances in technology, changes in environmental laws and regulations and their application, the scarcity of reliable data pertaining to identified sites, the difficulty in assessing the involvement and financial capability of other potentially responsible parties and the Company’s ability to obtain contributions from other parties, and the lengthy time periods over which site remediation occurs. It is possible some of these matters (the outcomes of which are subject to various uncertainties) may be resolved unfavorably against the Company, and could materially affect operating results when resolved in future periods. Foreign Currency Translation The financial statements of the Company’s international subsidiaries generally are measured using the local currency as the functional currency. The translation from the applicable foreign currency to U.S. Dollars is performed for balance sheet accounts using exchange rates in effect at the balance sheet date and for revenue and expense accounts using the weighted average exchange rate for the period. The resulting translation adjustments are recorded in accumulated other comprehensive income (loss) as a component of stockholders’ equity. The Company reflects net foreign exchange transaction gains and losses resulting from the conversion of the transaction currency to functional currency as a component of foreign currency exchange gains or losses in selling, general and administrative expenses in the Consolidated Statements of Income. Financial Instruments The carrying values of cash and cash equivalents, accounts receivable, derivative instruments, and accounts payable approximate their fair value due to the short-term nature of these instruments. Stock-Based Compensation All stock-based compensation awards are expensed over their vesting period, based on fair value. For awards having a service-only vesting condition, the Company recognizes stock-based compensation expense on a straight-line basis over the requisite service periods. For awards with a performance vesting condition, which are subject to certain pre-established performance targets, the Company recognizes stock-based compensation expense on a graded-vesting basis to the extent it is probable the performance targets will be met. The fair values of deferred stock units, restricted stock units, restricted stock, and stock awards are based on the market price of the Company’s common stock, all on the date the stock-based awards are granted. Revenue Recognition The Company recognizes revenue when performance obligations under the terms of contracts with customers are satisfied, which occurs with the transfer of control of the Company’s products. Revenue is measured as the amount of consideration the Company expects to receive in exchange for transferring its products to its customers. Sales, value added and other taxes collected concurrent with revenue-producing activities are excluded from revenue. For the majority of product sales, the Company transfers control and recognizes revenue when it ships the product from its facility to its customer. The amount of consideration the Company receives and the revenue recognized varies with sales discounts, volume rebate programs and indexed material pricing. When the Company offers customers retrospective volume rebates, it estimates the expected rebates based on an analysis of historical experience. The Company adjusts its estimate of revenue related to volume rebates at the earlier of when the most likely amount of consideration expected to be received changes or when the consideration becomes fixed. When the Company offers customers prompt pay sales discounts or agrees to variable pricing based on material indices, it estimates the expected discounts or pricing adjustments based on an analysis of historical experience. The Company adjusts its estimate of revenue related to sales discounts and indexed material pricing to the expected value of the consideration to which the Company will be entitled. The Company includes the variable consideration in the transaction price to the extent that it is probable that a significant reversal of cumulative revenue will not occur when the volume, discount or indexed material price uncertainties are resolved. See Note 14 - Segment Reporting for the Company’s disclosures of disaggregated revenue. Shipping and Handling Costs The Company recognizes shipping and handling costs as fulfillment costs when control over products has transferred to the customer, and records the expense within selling, general and administrative expenses. Such costs aggregated $77.3 million, $83.2 million, and $68.6 million in the years ended December 31, 2019, 2018, and 2017, respectively. Legal Costs The Company expenses all legal costs associated with litigation as incurred. Legal expenses are included in selling, general and administrative expenses in the Consolidated Statements of Income. Fair Value Measurements Fair value is determined using a hierarchy that has three levels based on the reliability of the inputs used to determine fair value. Level 1 refers to fair values determined based on quoted prices in active markets for identical assets. Level 2 refers to fair values estimated using significant other observable inputs, and Level 3 includes fair values estimated using significant unobservable inputs. Recent Accounting Pronouncements Recently issued accounting pronouncements not yet adopted In January 2017, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2017-04, Simplifying the Test for Goodwill Impairment, which amends Accounting Standards Codification (“ASC”) 350, Intangibles - Goodwill and Other. This ASU simplifies how an entity is required to test goodwill for impairment by eliminating step 2 from the goodwill impairment test. Step 2 measures goodwill impairment loss by comparing the implied fair value of a reporting unit’s goodwill with the carrying amount of that goodwill. This ASU is effective for interim and annual reporting periods, beginning after December 15, 2019, and early adoption is permitted. The Company will adopt this ASU in the first quarter of 2020 and does not expect the adoption of this ASU to have a material impact on its consolidated financial statements. In June 2016, the FASB issued ASU 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments, which changes the methodology for measuring credit losses on financial instruments and the timing of when such losses are recorded. This ASU is effective for interim and annual reporting periods, beginning after December 15, 2019, and early adoption is permitted. The Company will adopt this ASU in the first quarter of 2020 and does not expect the adoption of this ASU to have a material impact on its consolidated financial statements. Recently adopted accounting pronouncements In February 2016, the FASB issued ASU 2016-02, Leases, and all related amendments, which established ASC Topic 842 (Topic 842), which requires, in most instances, a lessee to recognize on its balance sheet a liability to make lease payments (the lease liability) and also a right-of-use asset representing its right to use the underlying asset for the lease term. Leases are classified as finance or operating, with classification affecting the pattern and classification of expense recognition in the income statement. The Company adopted Topic 842 on January 1, 2019, using the cumulative-effect adjustment transition method, which applies the new standard at the effective date without adjusting the comparative periods presented. The Company elected the package of practical expedients permitted under the transition guidance, which allowed the carryforward of historical lease classification, the assessment of whether a contract is or contains a lease, and initial direct costs for any leases that existed prior to adoption of the new standard. The Company also elected to keep leases with an initial term of 12 months or less off its Consolidated Balance Sheet and recognize the associated lease payments in its Consolidated Statements of Income on a straight-line basis over the lease term. The adoption of Topic 842 resulted in the recognition of right-of-use assets of $66.4 million and operating lease obligations of $69.0 million at January 1, 2019. The adoption did not result in a cumulative effect adjustment to beginning retained earnings and is not expected to materially impact the Company’s Consolidated Statements of Income or Cash Flows. See Note 10 of the Notes to Consolidated Financial Statements for expanded disclosures required under Topic 842.

Accounts receivable are stated at historical carrying value, net of write-offs and allowances. The Company establishes allowances based upon historical experience and any specific customer collection issues identified by the Company. Uncollectible accounts receivable are written off when a settlement is reached or when the Company has determined the balance will not be collected.

Fixed assets which are owned are stated at cost less accumulated depreciation, and are depreciated on a straight-line basis over the estimated useful lives of the properties and equipment. Leasehold improvements and leased equipment are amortized over the shorter of the lives of the leases or the underlying assets. Maintenance and repair costs that do not improve service potential or extend economic life are expensed as incurred.

The Company provides warranty terms based upon the type of product sold. The Company estimates the warranty accrual based upon various factors, including historical warranty costs, current trends, product mix, and sales. The accounting for warranty accruals requires the Company to make assumptions and judgments, and to the extent actual results differ from original estimates, adjustments to recorded accruals may be required. See Note 6 - Accrued Expenses and Other Current Liabilities for further detail.

Deferred tax assets and liabilities are determined based on the temporary differences between the financial reporting and tax basis of assets and liabilities, applying enacted statutory tax rates in effect for the year in which the differences are expected to reverse. In assessing the realizability of deferred tax assets, management considers whether it is more likely than not that some portion or all the deferred tax assets will not be realized.

The Tax Cuts and Jobs Act (the “TCJA”), enacted in 2017, created a new requirement that certain income earned by foreign subsidiaries, known as global intangible low-tax income (“GILTI”), must be included in the gross income of their U.S. shareholder. We have elected to account for GILTI tax in the year the tax is incurred.

The Company accounts for uncertainty in tax positions by recognizing in its financial statements the impact of a tax position only if that position is more likely than not of being sustained on audit, based on the technical merits of the position. Further, the Company assesses the tax benefits of the tax positions in its financial statements based on experience with similar tax positions, information obtained during the examination process and the advice of experts. The Company recognizes previously unrecognized tax benefits upon the earlier of the expiration of the period to assess tax in the applicable taxing jurisdiction or when the matter is constructively settled and upon changes in statutes or regulations and new case law or rulings. The Company classifies interest and penalties related to income taxes as a component of income tax expense in its Consolidated Statements of Income.

Goodwill represents the excess of the total consideration given in an acquisition of a business over the fair value of the net tangible and identifiable intangible assets acquired. Goodwill is not amortized, but instead is tested at the reporting unit level for impairment annually in November, or more frequently if certain circumstances indicate a possible impairment may exist. In 2019 and 2018, the Company assessed qualitative factors of its reporting units to determine whether it was more likely than not the fair value of the reporting unit was less than its carrying amount, including goodwill. The qualitative impairment test consists of an assessment of qualitative factors, including general economic and industry conditions, market share and input costs.

Intangible assets with estimable useful lives are amortized over their respective estimated useful lives to their estimated residual values, and reviewed for impairment. Intangible assets are amortized using either an accelerated or straight-line method, whichever best reflects the pattern in which the estimated future economic benefits of the asset will be consumed. The useful lives of intangible assets are determined after considering the expected cash flows and other specific facts and circumstances related to each intangible asset. Intangible assets with indefinite lives are not amortized, but instead are tested for impairment annually in November, or more frequently if certain circumstances indicate a possible impairment may exist.

Long-lived assets, other than goodwill, are tested for impairment when changes in circumstances indicate their carrying value may not be recoverable. A determination of impairment, if any, is made based on the undiscounted value of estimated future cash flows, salvage value or expected net sales proceeds, depending on the circumstances. Impairment is measured as the excess of the carrying value over the estimated fair value of such assets.

Accruals for environmental matters are recorded when it is probable a liability has been incurred and the amount of the liability can be reasonably estimated, based upon current law and existing technologies. These amounts, which are not discounted and are exclusive of claims against potentially responsible third parties, are adjusted periodically as assessment and remediation efforts progress or additional technical or legal information becomes available. Environmental exposures are difficult to assess for numerous reasons, including the identification of new sites, developments at sites resulting from investigatory studies and remedial activities, advances in technology, changes in environmental laws and regulations and their application, the scarcity of reliable data pertaining to identified sites, the difficulty in assessing the involvement and financial capability of other potentially responsible parties and the Company’s ability to obtain contributions from other parties, and the lengthy time periods over which site remediation occurs. It is possible some of these matters (the outcomes of which are subject to various uncertainties) may be resolved unfavorably against the Company, and could materially affect operating results when resolved in future periods.

The financial statements of the Company’s international subsidiaries generally are measured using the local currency as the functional currency. The translation from the applicable foreign currency to U.S. Dollars is performed for balance sheet accounts using exchange rates in effect at the balance sheet date and for revenue and expense accounts using the weighted average exchange rate for the period. The resulting translation adjustments are recorded in accumulated other comprehensive income (loss) as a component of stockholders’ equity. The Company reflects net foreign exchange transaction gains and losses resulting from the conversion of the transaction currency to functional currency as a component of foreign currency exchange gains or losses in selling, general and administrative expenses in the Consolidated Statements of Income.

All stock-based compensation awards are expensed over their vesting period, based on fair value. For awards having a service-only vesting condition, the Company recognizes stock-based compensation expense on a straight-line basis over the requisite service periods. For awards with a performance vesting condition, which are subject to certain pre-established performance targets, the Company recognizes stock-based compensation expense on a graded-vesting basis to the extent it is probable the performance targets will be met. The fair values of deferred stock units, restricted stock units, restricted stock, and stock awards are based on the market price of the Company’s common stock, all on the date the stock-based awards are granted.

The Company recognizes revenue when performance obligations under the terms of contracts with customers are satisfied, which occurs with the transfer of control of the Company’s products. Revenue is measured as the amount of consideration the Company expects to receive in exchange for transferring its products to its customers. Sales, value added and other taxes collected concurrent with revenue-producing activities are excluded from revenue.

For the majority of product sales, the Company transfers control and recognizes revenue when it ships the product from its facility to its customer. The amount of consideration the Company receives and the revenue recognized varies with sales discounts, volume rebate programs and indexed material pricing. When the Company offers customers retrospective

volume rebates, it estimates the expected rebates based on an analysis of historical experience. The Company adjusts its estimate of revenue related to volume rebates at the earlier of when the most likely amount of consideration expected to be received changes or when the consideration becomes fixed. When the Company offers customers prompt pay sales discounts or agrees to variable pricing based on material indices, it estimates the expected discounts or pricing adjustments based on an analysis of historical experience. The Company adjusts its estimate of revenue related to sales discounts and indexed material pricing to the expected value of the consideration to which the Company will be entitled. The Company includes the variable consideration in the transaction price to the extent that it is probable that a significant reversal of cumulative revenue will not occur when the volume, discount or indexed material price uncertainties are resolved.

The Company recognizes shipping and handling costs as fulfillment costs when control over products has transferred to the customer, and records the expense within selling, general and administrative expenses. Such costs aggregated $77.3 million, $83.2 million, and $68.6 million in the years ended December 31, 2019, 2018, and 2017, respectively.

Fair value is determined using a hierarchy that has three levels based on the reliability of the inputs used to determine fair value. Level 1 refers to fair values determined based on quoted prices in active markets for identical assets. Level 2 refers to fair values estimated using significant other observable inputs, and Level 3 includes fair values estimated using significant unobservable inputs.

In January 2017, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2017-04, Simplifying the Test for Goodwill Impairment, which amends Accounting Standards Codification (“ASC”) 350, Intangibles - Goodwill and Other. This ASU simplifies how an entity is required to test goodwill for impairment by eliminating step 2 from the goodwill impairment test. Step 2 measures goodwill impairment loss by comparing the implied fair value of a reporting unit’s goodwill with the carrying amount of that goodwill. This ASU is effective for interim and annual reporting periods, beginning after December 15, 2019, and early adoption is permitted. The Company will adopt this ASU in the first quarter of 2020 and does not expect the adoption of this ASU to have a material impact on its consolidated financial statements.

In June 2016, the FASB issued ASU 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments, which changes the methodology for measuring credit losses on financial instruments and the timing of when such losses are recorded. This ASU is effective for interim and annual reporting periods, beginning after December 15, 2019, and early adoption is permitted. The Company will adopt this ASU in the first quarter of 2020 and does not expect the adoption of this ASU to have a material impact on its consolidated financial statements.

In February 2016, the FASB issued ASU 2016-02, Leases, and all related amendments, which established ASC Topic 842 (Topic 842), which requires, in most instances, a lessee to recognize on its balance sheet a liability to make lease payments (the lease liability) and also a right-of-use asset representing its right to use the underlying asset for the lease term. Leases are classified as finance or operating, with classification affecting the pattern and classification of expense recognition in the income statement. The Company adopted Topic 842 on January 1, 2019, using the cumulative-effect adjustment transition method, which applies the new standard at the effective date without adjusting the comparative periods presented. The Company elected the package of practical expedients permitted under the transition guidance, which allowed the carryforward of historical lease classification, the assessment of whether a contract is or contains a lease, and initial direct costs for any leases that existed prior to adoption of the new standard. The Company also elected to keep leases with an initial term of 12 months or

The adoption of Topic 842 resulted in the recognition of right-of-use assets of $66.4 million and operating lease obligations of $69.0 million at January 1, 2019. The adoption did not result in a cumulative effect adjustment to beginning retained earnings and is not expected to materially impact the Company’s Consolidated Statements of Income or Cash Flows. See Note 10 of the Notes to Consolidated Financial Statements for expanded disclosures required under Topic 842.