Ferro (FOE) 10-K 2 Mar 20 2019 FY Annual report Financial data

Document And Entity Information

Document And Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2019	Jan. 31, 2020	Jun. 30, 2019
Document And Entity Information [Abstract]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2019
Document Transition Report	false
Amendment Flag	false
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	FY
Current Fiscal Year End Date	--12-31
Entity Central Index Key	0000035214
Entity File Number	1-584
Entity Registrant Name	FERRO CORPORATION
Entity Incorporation State Country Code	OH
Entity Tax Identification Number	34-0217820
Entity Address Address Line One	6060 Parkland Blvd.
Entity Address Address Line Two	Suite 250
Entity Address City Or Town	Mayfield Heights
Entity Address State Or Province	OH
Entity Address Postal Zip Code	44124
City Area Code	216
Local Phone Number	875-5600
Title of 12(b) Security	Common Stock, par value $1.00
Trading Symbol	FOE
Security Exchange Name	NYSE
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		82,019,374
Entity Public Float			$ 1,272,911,000
Documents Incorporated By Reference	Portions of the Proxy Statement for Ferro Corporation’s 2020 Annual Meeting of Shareholders are incorporated into Part III of this Annual Report on Form 10-K.

Consolidated Statements Of Oper

Consolidated Statements Of Operations - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Consolidated Statements Of Operations [Abstract]
Net sales	$ 1,018,366	$ 1,082,223	$ 996,382
Cost of sales	709,550	742,488	669,663
Gross profit	308,816	339,735	326,719
Selling, general and administrative expenses	212,485	219,947	217,290
Restructuring and impairment charges	10,955	7,116	8,523
Other expense (income):
Interest expense	24,302	23,659	20,647
Interest earned	(3,325)	(3,672)	(2,968)
Foreign currency losses, net	9,166	6,335	3,440
Loss on extinguishment of debt		3,226	3,905
Miscellaneous expense (income), net	11,722	12,074	(7,433)
Income before income taxes	43,511	71,050	83,315
Income tax expense	8,119	14,130	46,413
Income from continuing operations	35,392	56,920	36,902
Income (loss) from discontinued operations, net of income taxes	(27,977)	24,026	20,866
Net income	7,415	80,946	57,768
Less: Net income attributable to noncontrolling interests	1,377	853	714
Net income attributable to Ferro Corporation common shareholders	6,038	80,093	57,054
Amounts attributable to Ferro Corporation:
Net income attributable to Ferro Corporation from continuing operations, net of income tax	34,305	56,069	36,198
Net income (loss) attributable to Ferro Corporation from discontinued operations, net of income tax	(28,267)	24,024	20,856
Income attributable to Ferro Corporation	$ 6,038	$ 80,093	$ 57,054
Weighted-average common shares outstanding	82,083	83,940	83,713
Incremental common shares attributable to performance shares, deferred stock units, restricted stock units, and stock options	808	1,145	1,443
Weighted-average diluted shares outstanding	82,891	85,085	85,156
Basic earnings (loss):
Continuing operations	$ 0.41	$ 0.67	$ 0.43
Discontinued operations	(0.34)	0.28	0.25
Total	0.07	0.95	0.68
Diluted earnings (loss):
Continuing operations	0.41	0.66	0.43
Discontinued operations	(0.34)	0.28	0.24
Total	$ 0.07	$ 0.94	$ 0.67

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Consolidated Statements of Comprehensive Income [Abstract]
Net income	$ 7,415	$ 80,946	$ 57,768
Other comprehensive income (loss), net of income tax:
Foreign currency translation income (loss)	5,500	(26,113)	30,558
Cash flow hedging instruments unrealized gain (loss)	(9,710)	(4,242)	945
Postretirement benefit liabilities gain (loss)	80	(39)	24
Other comprehensive income (loss), net of income tax	(4,130)	(30,394)	31,527
Total comprehensive income	3,285	50,552	89,295
Less: Comprehensive income attributable to noncontrolling interests	1,262	352	1,066
Comprehensive income attributable to Ferro Corporation	$ 2,023	$ 50,200	$ 88,229

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Current assets
Cash and cash equivalents	$ 96,202	$ 96,101
Accounts receivable, net	135,804	154,907
Inventories	264,622	245,771
Other receivables	69,365	71,653
Other current assets	22,373	21,146
Current assets held-for-sale	294,803	298,205
Total current assets	883,169	887,783
Other assets
Property, plant and equipment, net	300,005	275,539
Goodwill	172,209	172,953
Intangible assets, net	127,820	141,963
Deferred income taxes	98,714	88,526
Operating leased assets	21,684
Other non-current assets	72,021	89,741
Non-current assets held-for-sale	158,999	209,571
Total assets	1,834,621	1,866,076
Current liabilities
Loans payable and current portion of long-term debt	8,703	8,921
Accounts payable	138,830	132,753
Accrued payrolls	27,447	36,593
Accrued expenses and other current liabilities	73,759	52,867
Current liabilities held-for-sale	133,006	158,182
Total current liabilities	381,745	389,316
Other liabilities
Long-term debt, less current portion	798,862	806,081
Postretirement and pension liabilities	174,021	166,681
Operating leased non-current liabilities	15,326
Other non-current liabilities	56,976	53,666
Non-current liabilities held-for-sale	37,489	64,483
Total liabilities	1,464,419	1,480,227
Equity
Common stock, par value $1 per share; 300.0 million shares authorized; 93.4 million shares issued; 82.0 million and 83.0 million shares outstanding at December 31, 2019, and December 31, 2018, respectively	93,436	93,436
Paid-in capital	294,543	298,123
Retained earnings	262,016	255,978
Accumulated other comprehensive loss	(109,376)	(105,361)
Common shares in treasury, at cost	(180,243)	(165,545)
Total Ferro Corporation shareholders' equity	360,376	376,631
Noncontrolling interests	9,826	9,218
Total equity	370,202	385,849
Total liabilities and equity	$ 1,834,621	$ 1,866,076

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - $ / shares	Dec. 31, 2019	Dec. 31, 2018
Consolidated Balance Sheets [Abstract]
Common stock, par value	$ 1	$ 1
Common stock, shares authorized	300,000,000	300,000,000
Common stock, shares issued	93,400,000	93,400,000
Common stock, shares outstanding	82,000,000	83,000,000

Consolidated Statements of Equi

Consolidated Statements of Equity - USD ($) $ in Thousands	Common Shares in Treasury [Member]	Common Stock [Member]	Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Non-controlling Interests [Member]	Total
Beginning Balances at Dec. 31, 2016	$ (160,936)	$ 93,436	$ 306,566	$ 114,690	$ (106,643)	$ 7,919	$ 255,032
Beginning Balances, shares at Dec. 31, 2016	9,996,000
Net income				57,054		714	57,768
Other comprehensive income (loss)					31,175	352	$ 31,527
Purchase of treasury stock, shares							0
Stock-based compensation transactions	$ 13,880		(4,408)				$ 9,472
Stock-based compensation transactions, shares	(610,000)
Change in ownership interest						3,355	3,355
Distributions to noncontrolling interests						(474)	(474)
Ending Balances at Dec. 31, 2017	$ (147,056)	93,436	302,158	171,744	(75,468)	11,866	356,680
Ending Balances, shares at Dec. 31, 2017	9,386,000
Net income				80,093		853	80,946
Other comprehensive income (loss)					(29,893)	(501)	(30,394)
Purchase of treasury stock	$ (28,807)						$ (28,807)
Purchase of treasury stock, shares	1,471,000						1,470,791
Stock-based compensation transactions	$ 10,318		(4,824)				$ 5,494
Stock-based compensation transactions, shares	(424,000)
Change in ownership interest			789
Change in ownership interest						(2,228)	(1,439)
Distributions to noncontrolling interests						(772)	(772)
Ending Balances at Dec. 31, 2018	$ (165,545)	93,436	298,123	255,978	(105,361)	9,218	385,849
Ending Balances, shares at Dec. 31, 2018	10,433,000
Adjustments for accounting standard update 2016-16				4,141			4,141
Net income				6,038		1,377	7,415
Other comprehensive income (loss)					(4,015)	(115)	(4,130)
Purchase of treasury stock	$ (25,000)						$ (25,000)
Purchase of treasury stock, shares	1,441,000						1,440,678
Stock-based compensation transactions	$ 10,302		(3,580)				$ 6,722
Stock-based compensation transactions, shares	(443,000)
Distributions to noncontrolling interests						(654)	(654)
Ending Balances at Dec. 31, 2019	$ (180,243)	$ 93,436	$ 294,543	$ 262,016	$ (109,376)	$ 9,826	$ 370,202
Ending Balances, shares at Dec. 31, 2019	11,431,000

Consolidated Statements of Cash

Consolidated Statements of Cash Flows $ in Thousands	12 Months Ended
	Dec. 31, 2019USD ($)	Dec. 31, 2018USD ($)	Dec. 31, 2017USD ($)
Cash flows from operating activities
Net income	$ 7,415	$ 80,946	$ 57,768
Adjustments to reconcile net income to net cash provided by operating activities:
Loss (gain) on sale of assets and businesses	(916)	164	(852)
Depreciation and amortization	55,879	53,974	50,085
Interest amortization	3,755	3,577	3,496
Restructuring and impairment charges	44,702	4,084	7,593
Loss on extinguishment of debt		3,226	3,905
Provision for allowance for doubtful accounts	1,086	681	44
Retirement benefits	9,063	9,221	(6,417)
Deferred income taxes	(11,826)	(3,720)	23,490
Stock-based compensation	7,406	8,441	11,770
Changes in current assets and liabilities, net of effects of acquisitions:
Accounts receivable	(74,444)	19,885	(25,852)
Inventories	(10,578)	(33,922)	(46,962)
Other receivables and other current assets	1,204	(1,444)	(7,099)
Accounts payable	(10,075)	35,887	26,150
Accrued expenses and other current liabilities	8,016	164	(22,398)
Other operating activities	(12,977)	1,629	10,069
Net cash provided by operating activities	17,710	182,793	84,790
Cash flows from investing activities
Capital expenditures for property, plant and equipment and other long-lived assets	(64,970)	(80,619)	(50,552)
Proceeds from sale of equity method investment			2,268
Collections of financing receivables	84,567	7,020
Business acquisitions, net of cash acquired	(251)	(74,954)	(131,194)
Other investing activities	1,957	37	567
Net cash provided by (used in) investing activities	21,303	(148,516)	(178,911)
Cash flows from financing activities
Net borrowings (repayments) under loans payable	45	(19,077)	(19,634)
Proceeds from revolving credit facility - 2014 Credit Facility			15,628
Principal payments on revolving credit facility - 2014 Credit Facility			(327,183)
Proceeds from term loan facility - Credit Facility			623,827
Principal payments on term loan facility - 2014 Credit Facility			(243,250)
Principal payments on term loan facility - Credit Facility		(304,060)	(4,872)
Principal payments on term loan facility - Amended Credit Facility	(8,200)	(6,150)
Proceeds from term loan facility - Amended Credit Facility		466,075
Proceeds from revolving credit facility - Credit Facility		134,950	180,605
Principal payments on revolving credit facility - Credit Facility		(212,950)	(102,605)
Proceeds from revolving credit facility - Amended Credit Facility	227,101	240,035
Principal payments on revolving credit facility - Amended Credit Facility	(227,101)	(240,035)
Principal payments on other long-term debt			(3,971)
Proceeds from other long-term debt			2,700
Payment of debt issuance costs		(3,466)	(12,927)
Acquisition related contingent consideration payment	(5,200)	(9,464)	(1,315)
Proceeds from the exercise of stock options	1,052	764	4,526
Purchase of treasury stock	(25,000)	(28,807)
Other financing activities	(1,892)	(8,448)	(3,166)
Net cash provided by (used in) financing activities	(39,195)	9,367	108,363
Effect of exchange rate changes on cash and cash equivalents	283	(2,894)	3,727
Increase in cash and cash equivalents	101	40,750	17,969
Cash and cash equivalents at beginning of period	104,301	63,551	45,582
Cash and cash equivalents at end of period	104,402	104,301	63,551
Less: Cash and cash equivalents of discontinued operations at end of period	8,200	8,200
Cash and cash equivalents of continuing operations at end of period	96,202	96,101	63,551
Cash paid during the period for:
Interest	33,429	33,910	26,850
Income taxes	$ 21,682	$ 36,789	$ 25,662

Our Business

Our Business	12 Months Ended
	Dec. 31, 2019
Our Business [Abstract]
Our Business	1. Our Business Ferro Corporation (“Ferro,” “we,” “us” or “the Company”) is a leading producer of specialty materials that are sold to a broad range of manufacturers who, in turn, make products for many end-use markets. Ferro’s products fall into two general categories: functional coatings, which perform specific functions in the manufacturing processes and end products of our customers; and color solutions, which provide aesthetic and performance characteristics to our customers’ products. We differentiate ourselves in our industry by innovation and new products and services and the consistent high quality of our products, combined with delivery of localized technical service and customized application technology support. Our value-added technical services assist customers in their material specification and evaluation, product design, and manufacturing process characterization in order to help them optimize the application of our products. We manage our businesses through four business units that are differentiated from one another by product type. The four business units are listed below:  Tile Coating Systems (1)  Porcelain Enamel (2)  Performance Colors and Glass  Color Solutions (1) Tile Coating Systems was historically a part of the Performance Coatings reportable segment. As of December 31, 2019, the results of the Tile Coatings business portion of Tile Coating Systems are reported as discontinued operations, for financial reporting purposes. (2) Porcelain Enamel, previously a part of the Performance Coatings reportable segment, is integrated into the Performance Colors and Glass reportable segment, for financial reporting purposes. We produce our products primarily in the Europe, Middle East and Africa (“EMEA”) region, the United States (“U.S.”), the Asia Pacific region, and Latin America. We sell our products directly to customers and through the use of agents or distributors throughout the world. Our products are sold principally in the EMEA region, the U.S., the Asia Pacific region, and Latin America. Our customers manufacture products to serve a variety of end markets, including appliances, automobiles, building and renovation, electronics, household furnishings, industrial products, packaging, and sanitation. During the fourth quarter of 2019, substantially all of the assets and liabilities of our Tile Coatings business were classified as held-for-sale in the accompanying consolidated balance sheets. As further discussed in Note 4, we entered into a definitive agreement to sell our Tile Coatings business which has historically been included in the Performance Coatings reportable segment. Therefore, the associated operating results, net of income tax, have been classified as discontinued operations in the accompanying consolidated statements of operations for all periods presented.

Significant Accounting Policies

Significant Accounting Policies	12 Months Ended
	Dec. 31, 2019
Significant Accounting Policies [Abstract]
Significant Accounting Policies	2. Significant Accounting Policies Principles of Consolidation Our consolidated financial statements include the accounts of the parent company and the accounts of its subsidiaries and include the results of the Company and all entities in which the Company has a controlling interest. When we consolidate our financial statements, we eliminate intercompany transactions, accounts and profits. When we exert significant influence over an investee but do not control it, we account for the investment and the investment income using the equity method. These investments are reported in Other non-current assets on our consolidated balance sheet. We consolidate financial results for five legal entities in which we do not own 100% of the equity interests, either directly or indirectly through our subsidiaries. These entities have non-controlling interest ownerships ranging from 5 % to 41 %. When we acquire a subsidiary, its financial results are included in our consolidated financial statements from the date of the acquisition. When we dispose of a subsidiary, its financial results are included in our consolidated financial statements until the date of the disposition. In the event that a disposal group meets the criteria for discontinued operations, prior periods are adjusted to reflect the classification. Use of Estimates and Assumptions in the Preparation of Financial Statements We prepare our consolidated financial statements in conformity with accounting principles generally accepted in the United States, which requires us to make estimates and to use judgments and assumptions that affect the timing and amount of assets, liabilities, equity, revenues and expenses recorded and disclosed. The more significant estimates and judgments relate to revenue recognition, restructuring and cost reduction programs, asset impairment, income taxes, inventories, goodwill, pension and other postretirement benefits, purchase price accounting and environmental liabilities. Actual outcomes could differ from our estimates, resulting in changes in revenues or costs that could have a material impact on the Company’s results of operations, financial position, or cash flows. Foreign Currency Translation The financial results of our operations outside of the U.S. are recorded in local currencies, which generally are also the functional currencies for financial reporting purposes. The results of operations outside of the U.S. are translated from these functional currencies into U.S. dollars using the average monthly currency exchange rates. We use the average currency exchange rate for these results of operations as a reasonable approximation of the results had specific currency exchange rates been used for each individual transaction. Foreign currency transaction gains and losses are recorded, as incurred, as Other expense (income) in the consolidated statements of operations. Assets and liabilities are translated into U.S. dollars using exchange rates at the balance sheet dates, and we record the resulting foreign currency translation adjustments as a separate component of Accumulated other comprehensive loss in equity. Revenue Recognition Under Accounting Standards Codification (“ASC”) 606, revenues are recognized when control of the promised goods is transferred to our customers, in an amount that reflects the consideration we expect to be entitled to in exchange for those goods. In order to achieve that core principle, the Company applies the following five-step approach: 1) identify the contract with a customer; 2) identify the performance obligations; 3) determine the transaction price; 4) allocate the transaction price to the performance obligations in the contract; and 5) recognize revenue when a performance obligation is satisfied. The Company considers confirmed customer purchase orders, which in some cases are governed by master sales agreements, to be the contracts, from an accounting perspective, with customers. Under our standard contracts, the only performance obligation is the delivery of manufactured goods and the performance obligation is satisfied at a point in time, when the Company transfers control of the manufactured goods. The Company may receive orders for products to be delivered over multiple dates that may extend across several reporting periods. The Company invoices for each order and recognizes revenue for each distinct product upon shipment, once transfer of control has occurred. Payment terms are standard for the industry and jurisdiction in which we operate. In determining the transaction price, the Company evaluates whether the price is subject to refund or adjustment, to determine the net consideration to which the Company expects to be entitled. Discounts or rebates are specifically stated in customer contracts or invoices, and are recorded as a reduction of revenue in the period the related revenue is recognized. The product price as specified on the customer confirmed orders is considered the standalone selling price. The Company allocates the transaction price to each distinct product based on its relative standalone selling price. Revenue is recognized when control of the product is transferred to the customer (i.e., when the Company’s performance obligation is satisfied), which generally occurs at shipment. We review material contracts to determine transfer of control based upon the business practices and legal requirements of each country. For sales of all products, including those containing precious metals, we report revenues on a gross basis, along with their corresponding cost of sales to arrive at gross profit. The amount of shipping and handling fees invoiced to our customers at the time our product is shipped is included in net sales as we are the principal in those activities. Sales, valued-added and other taxes collected from our customers and remitted to governmental authorities are excluded from net sales. Credit memos issued to customers for sales returns and sales adjustments are recorded when they are incurred as a reduction of sales. There were no changes in amounts previously reported in the Company’s consolidated financial statements due to adopting ASC 606. Practical Expedients and Exemptions All material contracts have an original duration of one year or less and, as such, the Company uses the practical expedient applicable to such contracts, and has not disclosed the transaction price for the remaining performance obligations as of the end of each reporting period, or when the Company expects to recognize this revenue. When the period of time between the transfer of control of the goods and the time the customer pays for the goods is one year or less, the Company uses the practical expedient allowed by ASC 606 that provides relief from adjusting the amount of promised consideration for the effects of a financing component. We generally expense sales commissions when incurred because the amortization period is one year or less. These costs are recorded within Selling, general and administrative expenses Research and Development Expenses Research and development expenses are expensed as incurred and are included in Selling, general and administrative expenses. Total expenditures for product and application technology, including research and development, customer technical support and other related activities, were approximately $ 41.0 million for 2019, $ 40.1 million for 2018 and $ 36.2 million for 2017. Restructuring Programs We expense costs associated with exit and disposal activities designed to restructure operations and reduce ongoing costs of operations when we incur the related liabilities or when other triggering events occur. After the appropriate level of management, having the authority, approves the detailed restructuring plan and the appropriate criteria for recognition are met, we establish accruals for employee termination and other costs, as applicable. The accruals are estimates that are based upon factors including statutory and union requirements, affected employees’ lengths of service, salary level, health care benefit choices and contract provisions. We also analyze the carrying value of affected long-lived assets for impairment and reductions in their remaining estimated useful lives. In addition, we record the fair value of any new or remaining obligations when existing operating lease contracts are terminated or abandoned as a result of our exit and disposal activities. Asset Impairment The Company’s long-lived and indefinite-lived assets include property, plant and equipment, goodwill, and intangible assets. We review property, plant and equipment and intangible assets for impairment whenever events or circumstances indicate that their carrying values may not be recoverable. The following are examples of such events or changes in circumstances:  An adverse change in the business climate of a long-lived asset or asset group;  An adverse change in the extent or manner in which a long-lived asset or asset group is used or in its physical condition;  Current operating losses for a long-lived asset or asset group combined with a history of such losses or projected or forecasted losses that demonstrate that the losses will continue; or  A current expectation that, more likely than not, a long-lived asset or asset group will be sold or otherwise significantly disposed of before the end of its previously estimated useful life. The carrying amount of property, plant and equipment and intangible assets is not recoverable if the carrying value of the asset group exceeds the sum of the undiscounted cash flows expected to result from the use and eventual disposition of the asset group. In the event of impairment, we recognize a loss for the excess of the recorded value over fair value. The long-term nature of these assets requires the estimation of cash inflows and outflows several years into the future and only takes into consideration technological advances known at the time of review. We review goodwill for impairment annually using a measurement date of October 31, primarily due to the timing of our annual budgeting process, or more frequently in the event of an impairment indicator. The fair value of each reporting unit that has goodwill is estimated using the average of both the income approach and the market approach, which we believe provides a reasonable estimate of the reporting unit’s fair value, unless facts or circumstances exist which indicate a more representative fair value. The income approach is a discounted cash flow model, which uses projected cash flows attributable to the reporting unit, including an allocation of certain corporate expenses based primarily on proportional sales. We use historical results, trends and our projections of market growth, internal sales efforts and anticipated cost structure assumptions to estimate future cash flows. Using a risk-adjusted, weighted-average cost of capital, we discount the cash flow projections to the measurement date. The market approach estimates a price reasonably expected to be paid by a market participant in the purchase of the reporting units based on a comparison to similar businesses. If the fair value of any reporting unit was determined to be less than its carrying value, we would obtain comparable market values or independent appraisals of its net assets. Derivative Financial Instruments As part of our risk management activities, we employ derivative financial instruments, primarily interest rate swaps, cross currency swaps and foreign currency forward contracts, to hedge certain anticipated transactions, firm commitments, or assets and liabilities denominated in foreign currencies. We also purchase portions of our energy and precious metal requirements under fixed price forward purchase contracts designated as normal purchase contracts. We record derivatives on our balance sheet as either assets or liabilities that are measured at fair value. For derivative instruments that are designated and qualify as cash flow hedges, the gain or loss on the derivative is reported as a component of Accumulated other comprehensive loss (“AOCL”) and reclassified from AOCL into earnings when the hedged transaction affects earnings. For derivatives that are designated and qualify as net investment hedges, the gain or loss on the derivative is reported as a component of the currency translation in AOCL. Time value is excluded and the cash payments are recognized as an adjustment to interest expense. For derivatives that are not designated as hedges, the gain or loss on the derivative is recognized in current earnings. We only use derivatives to manage well-defined risks and do not use derivatives for speculative purposes. Postretirement and Other Employee Benefits We recognize postretirement and other employee benefits expense as employees render the services necessary to earn those benefits. We determine defined benefit pension and other postretirement benefit costs and obligations with the assistance of third parties who perform certain actuarial calculations. The calculations and the resulting amounts recorded in our consolidated financial statements are affected by assumptions including the discount rate, expected long-term rate of return on plan assets, the annual rate of change in compensation for plan-eligible employees, estimated changes in costs of healthcare benefits, mortality tables, and other factors. We evaluate the assumptions used on an annual basis. All costs except the service cost component are recorded in Miscellaneous expense (income), net on the consolidated statement of operations. Income Taxes We account for income taxes in accordance with ASC Topic 740, Income Taxes , which requires the recognition of deferred tax assets and liabilities for the expected future tax effects of events that have been included in the financial statements. Under this method, deferred tax assets and liabilities are determined based on the differences between the financial statements and tax basis of assets and liabilities using enacted tax rates in effect for the year in which the differences are expected to reverse. The effect of a change in tax rates on deferred tax assets and liabilities is recognized in income in the period that includes the enactment date. We record deferred tax assets to the extent we believe these assets will more likely than not be realized. In making such determination, we consider all available positive and negative evidence, including future reversals of existing temporary differences, the availability of tax planning strategies, forecasted income, and recent financial operations. We recognize a tax benefit from an uncertain tax position when it is more likely than not that the position will be sustained upon examination, including resolutions of any related appeals or litigation processes, based on the technical merits. We recognize interest and penalties related to uncertain tax positions within the income tax expense line in the accompanying consolidated statements of operations. Cash Equivalents We consider all highly liquid instruments with original maturities of three months or less when purchased to be cash equivalents. These instruments are carried at cost, which approximates fair value. Accounts Receivable and the Allowance for Doubtful Accounts Ferro sells its products to customers in diversified industries throughout the world. No customer or related group of customers represents greater than 10 % of net sales or accounts receivable. We perform ongoing credit evaluations of our customers and require collateral principally for export sales, when industry practices allow and as market conditions dictate, subject to our ability to negotiate secured terms relative to competitive offers. We regularly analyze significant customer accounts and provide for uncollectible accounts based on historical experience, customer payment history, the length of time the receivables are past due, the financial health of the customer, economic conditions and specific circumstances, as appropriate. Changes in these factors could result in additional allowances. Customer accounts we conclude to be uncollectible or to require excessive collection costs are written off against the allowance for doubtful accounts. Historically, write-offs of uncollectible accounts have been within our expectations. Detailed information about the allowance for doubtful accounts is provided below: 2019 2018 2017 (Dollars in thousands) Allowance for doubtful accounts $ 1,756 $ 1,343 $ 2,490 Bad debt expense 808 511 35 Inventories We value inventory at the lower of cost or net realizable value, with cost determined utilizing the first-in, first-out (“FIFO”) method. We periodically evaluate the net realizable value of inventories based primarily upon their age, but also upon assumptions of future usage in production, customer demand and market conditions. Inventory values have been reduced to the lower of cost or net realizable value by allowances for slow moving or obsolete goods. We maintain raw materials on our premises that we do not own, including precious metals consigned from financial institutions and customers. We also consign inventory from our vendors. Although we have physical possession of the goods, their value is not reflected on our balance sheet because we do not have legal title. We obtain precious metals under consignment agreements with financial institutions for periods of one year or less. These precious metals are primarily silver, gold, platinum, and palladium and are used in the production of certain products for our customers. Under these arrangements, the financial institutions own the precious metals, and accordingly, we do not report these precious metals as inventory on our consolidated balance sheets although they are physically in our possession. The financial institutions charge us fees for these consignment arrangements, and these fees are recorded as cost of sales. These agreements are cancelable by either party at the end of each consignment period, however, because we have access to a number of consignment arrangements with available capacity, our consignment needs can be shifted among the other participating institutions in order to ensure our supply. In certain cases, these financial institutions can require cash deposits to provide additional collateral beyond the value of the underlying precious metals. Property, Plant and Equipment We record property, plant and equipment at historical cost. In addition to the original purchased cost, including transportation, installation and taxes, we capitalize expenditures that increase the utility or useful life of existing assets. For constructed assets, we capitalize interest costs incurred during the period of construction. We expense repair and maintenance costs, as incurred. We depreciate property, plant and equipment on a straight-line basis, generally over the following estimated useful lives of the assets: Buildings 20 to 40 years Machinery and equipment 5 to 15 years Other Capitalized Costs We capitalize the costs of computer software developed or obtained for internal use after the preliminary project stage has been completed, and management, with the relevant authority, authorizes and commits to funding a computer software project, and it is probable that the project will be completed and the software will be used to perform the function intended. External direct costs of materials and services consumed in developing or obtaining internal-use computer software, payroll and payroll-related costs for employees who are directly associated with the project, and interest costs incurred when developing computer software for internal use are capitalized within Intangible assets. Capitalization ceases when the project is substantially complete, generally after all substantial testing is completed. We expense training costs and data conversion costs as incurred. We amortize software on a straight-line basis over its estimated useful life, which has historically been in a range of 1 to 10 years. Environmental Liabilities As part of the production of some of our products, we handle, process, use and store hazardous materials. As part of these routine processes, we expense recurring costs associated with control and disposal of hazardous materials as they are incurred. Occasionally, we are subject to ongoing, pending or threatened litigation related to the handling of these materials or other matters. If, based on available information, we believe that we have incurred a liability and we can reasonably estimate the amount, we accrue for environmental remediation and other contingent liabilities. We disclose material contingencies if the likelihood of the potential loss is reasonably possible but the amount is not reasonably estimable. In estimating the amount to be accrued for environmental remediation, we use assumptions about:  Remediation requirements at the contaminated site;  The nature of the remedy;  Existing technology;  The outcome of discussions with regulatory agencies;  Other potentially responsible parties at multi-party sites; and  The number and financial viability of other potentially responsible parties. We actively monitor the status of sites, and, as assessments and cleanups proceed, we update our assumptions and adjust our estimates as necessary. Because the timing of related payments is uncertain, we do not discount the estimated remediation costs. The following section provides a description of new accounting pronouncements ("Accounting Standard Update" or "ASU") issued by the Financial Accounting Standards Board ("FASB") that are applicable to the Company. Recently Adopted Accounting Pronouncement On January 1, 2019, we adopted No. ASU 2016-02, Leases: (Topic 842), using the new transition method under ASU 2018-11, Targeted Improvements. ASU 2016-02 requires companies to recognize a lease liability and asset on the balance sheet for operating leases with a term greater than one year. ASU 2018-11 provided an additional transition method to adopt the new leasing standard. Under this new transition method, an entity initially applies the new leasing standard using a cumulative-effect adjustment to the opening balance of retained earnings, but will continue to report comparative periods under existing guidance in accordance with ASC 840, Leases . We elected the package of practical expedients permitted under the transition guidance, which allowed us to carry forward our historical lease classification, our assessment on whether a contract is or contains a lease, and our initial direct costs for any leases that existed prior to adoption of the new standard. We also elected to combine lease and non-lease components for all asset classes. We elected the short-term lease recognition exemption for all leases that qualify. Consequently, for those leases that qualify, we will not recognize right-of-use assets or lease liabilities on the balance sheet. The impact of adoption resulted in $ 28.6 million recognized as total right-of-use assets and total lease liabilities on our consolidated balance sheet as of January 1, 2019. Other than this impact, the adoption of ASU 2016-02 did not have a material impact on our remaining consolidated financial statements. In addition to the pronouncement above, the following ASUs were adopted during 2019. The impact on our consolidated financial statements is described within the table below: Standard Description ASU No. 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework-Changes to the Disclosure Requirements for Fair Value Measurement , issued August, 2018 Modifies the disclosure requirements on fair value measurements. The Company updated the disclosures for the fair value measurements in accordance with the standard updates. ASU No. 2018-02, Income Statement – Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income , issued February, 2018 Allows a reclassification from AOCL to Retained Earnings for stranded tax effects resulting from the Tax Cuts and Jobs Act and requires certain disclosures about stranded tax effects. The Company has elected not to reclassify the stranded tax effects resulting from the Tax Cuts and Jobs Act within AOCL. ASU No. 2017-04, Intangibles – Goodwill and Other: (Topic 350): Simplifying the Test for Goodwill Impairment , issued January 2017 Intended to simplify the subsequent measurement of goodwill by eliminating Step 2 from the current goodwill impairment test. The Company updated its goodwill impairment test in accordance with the standard updates on a prospective basis. New Accounting Standards Not Yet Adopted We are currently evaluating the impact on our financial statements of the following ASUs: Standard Description ASU No. 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes , issued December, 2019 Simplifies the accounting for income taxes by removing certain exceptions and by: altering the recognition of franchise tax partially based on income; requiring evaluation of proper treatment of a step up in the tax basis of goodwill; specifying requirements regarding the allocation of tax expense to a legal entity that is not subject to tax; requiring the effect of an enacted change in tax laws or rates be reflected in the annual effective tax rate computation in the interim period that includes the enactment date, and; other minor codification improvements. This ASU is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2020. Early adoption is permitted. ASU No. 2018-14, Compensation-Retirement Benefits-Defined Benefit Plans-General (Subtopic 715-20): Disclosure Framework-Changes to the Disclosure Requirements for Defined Benefit Plans , issued August, 2018 Modifies disclosure requirements for employers that sponsor defined benefit pension or other postretirement plans. This ASU is effective for fiscal years beginning after December 15, 2020 and is to be applied using a retrospective approach for all periods presented. Early adoption is permitted. ASU No. 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments , issued June 2016 Changes the way entities recognize impairment of financial assets by requiring immediate recognition of estimated credit losses expected to occur over the remaining life of the financial asset. Additional disclosures are required regarding an entity’s assumptions, models and methods for estimating the expected credit loss. This ASU will be effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years, and is to be applied using a modified retrospective approach. Early adoption is permitted. We continue to evaluate the impact the adoption of this ASU will have on our financial statements and related disclosures but currently do not expect the impact to be significant. No other new accounting pronouncements issued had, or are expected to have, a material impact of the Company’s consolidated financial statements.

Revenue

Revenue	12 Months Ended
	Dec. 31, 2019
Revenue [Abstract]
Revenue	3. Revenue Revenues disaggregated by geography and reportable segment for the year ended December 31, 2019, follow: EMEA United States Asia Pacific Latin America Total (Dollars in thousands) Performance Colors and Glass $ 298,197 $ 197,494 $ 102,431 $ 50,570 $ 648,692 Color Solutions 136,934 161,773 37,485 33,482 369,674 Total net sales $ 435,131 $ 359,267 $ 139,916 $ 84,052 $ 1,018,366 Revenues disaggregated by geography and reportable segment for the year ended December 31, 2018, follow: EMEA United States Asia Pacific Latin America Total (Dollars in thousands) Performance Colors and Glass $ 328,299 $ 207,012 $ 103,649 $ 52,236 $ 691,196 Color Solutions 142,102 172,901 41,642 34,382 391,027 Total net sales $ 470,401 $ 379,913 $ 145,291 $ 86,618 $ 1,082,223 Revenues disaggregated by geography and reportable segment for the year ended December 31, 2017, follow: EMEA United States Asia Pacific Latin America Total (Dollars in thousands) Performance Colors and Glass $ 284,979 $ 201,753 $ 95,682 $ 55,908 $ 638,322 Color Solutions 134,122 154,730 36,343 32,865 358,060 Total net sales $ 419,101 $ 356,483 $ 132,025 $ 88,773 $ 996,382

Discontinued Operations

Discontinued Operations	12 Months Ended
	Dec. 31, 2019
Discontinued Operations [Abstract]
Summary Of Discontinued Operations	4. Discontinued Operations During the fourth quarter of 2019, substantially all of the assets and liabilities of our Tile Coatings business were classified as held-for-sale in the accompanying consolidated balance sheets. We entered into a definitive agreement to sell our Tile Coatings business which has historically been a part of our Performance Coatings reportable segment. Therefore, the associated operating results, net of income tax, have been classified as discontinued operations in the accompanying consolidated statements of operations for all periods presented. The table below summarizes results for the Tile Coatings business for the year ended December 31, 2019, 2018 and 2017 which are reflected in our consolidated statements of operations as discontinued operations. Interest expense has been allocated to the discontinued operations based on the ratio of net assets of the business to consolidated net assets excluding debt. 2019 2018 2017 (Dollars in thousands) Net sales $ 487,584 $ 530,185 $ 400,360 Cost of sales 385,890 413,987 310,858 Gross profit 101,694 116,198 89,502 Selling, general and administrative expenses 71,471 58,619 48,128 Restructuring and impairment charges 44,378 6,179 2,886 Interest expense 11,556 12,835 9,293 Interest earned ( 122 ) ( 125 ) ( 119 ) Foreign currency losses (gains), net ( 2,397 ) 1,852 3,114 Miscellaneous expense (income), net 2,127 3,896 ( 1,003 ) Income (loss) from discontinued operations before income taxes ( 25,319 ) 32,942 27,203 Income tax expense 2,658 8,916 6,337 Income (loss) from discontinued operations, net of income taxes ( 27,977 ) 24,026 20,866 Less: Net income attributable to noncontrolling interests 290 2 10 Net income (loss) attributable to Tile Coatings business $ ( 28,267 ) $ 24,024 $ 20,856 The following table summarizes the assets and liabilities which are classified as held-for-sale at December 31, 2019 and 2018: December 31, December 31, 2019 2018 Cash and cash equivalents $ 8,200 $ 8,200 Accounts receivable, net 160,174 151,975 Inventories 100,981 111,227 Other receivables 22,442 23,989 Other current assets 3,006 2,814 Current assets held-for-sale 294,803 298,205 Property, plant and equipment, net 99,429 105,802 Goodwill 3 43,511 Amortizable intangible assets, net 39,687 42,990 Deferred income taxes 14,425 14,962 Other non-current assets 5,455 2,306 Non-current assets held-for-sale 158,999 209,571 Total assets held-for-sale $ 453,802 $ 507,776  Loans payable and current portion of long-term debt $ 3,678 $ 5,838 Accounts payable 96,967 123,820 Accrued payrolls 4,838 3,396 Accrued expenses and other current liabilities 27,523 25,128 Current liabilities held-for-sale 133,006 158,182 Long-term debt, less current portion 25,805 54,173 Postretirement and pension liabilities 7,473 6,365 Other non-current liabilities 4,211 3,945 Non-current liabilities held-for-sale 37,489 64,483 Total liabilities held-for-sale $ 170,495 $ 222,665 The following table summarizes cash flow data relating to discontinued operations for the years ended December 31, 2019, 2018 and 2017: 2019 2018 2017 (Dollars in thousands) Depreciation $ 11,264 $ 10,778 $ 10,080 Amortization of intangible assets 3,192 3,219 3,019 Capital expenditures ( 10,126 ) ( 5,265 ) ( 4,656 ) Non-cash operating activities - fixed asset impairment — — 1,243 Non-cash operating activities - goodwill impairment 42,515 — — Non-cash operating activities - restructuring 127 — 1,868 Non-cash investing activities - capital expenditures, consisting of unpaid capital expenditure liabilities at year end 1,096 5,872 448

Aquisitions

Aquisitions	12 Months Ended
	Dec. 31, 2019
Acquisitions [Abstract]
Acquisitions	5. Acquisitions Quimicer, S.A. On October 1, 2018, the Company acquired 100 % of the equity interests of Quimicer, S.A. (“Quimicer”), for € 32.2 million (approximately $ 37.4 million), including the assumption of debt of € 5.2 million (approximately $ 6.1 million) . Its products include frits, varnishes, silk-screen printing pastes, crushed frits, pellets, atomized varnishes, and ceramic colors, as well as pigmented inks for digital printing on ceramic tiles within the legacy Performance Coatings reportable segment. The information included herein has been prepared based on the allocation of the purchase price using fair value and useful lives of the assets acquired and liabilities assumed, which were determined with the assistance of third parties who performed independent valuations using discounted cash flow and comparative market approaches, and estimates made by management. The Company recorded $ 21.5 million of personal and real property, $ 15.9 million of net working capital, $ 3.0 million of goodwill and $ 3.0 million of deferred tax liability on the consolidated balance sheets. During the third quarter of 2019, the Company recorded a goodwill impairment charge of $ 3.0 million as a result of the finalization of purchase accounting. During the fourth quarter of 2019, substantially all of the assets and liabilities of Quimicer were classified as held-for-sale in the accompanying consolidated balance sheets and associated operating results, net of income tax, classified as discontinued operations in the accompanying consolidated statements of operations in conjunction with the planned sale of the Tile Coatings business discussed in Note 4. UWiZ Technology Co., Ltd. On September 25, 2018, the Company acquired 100 % of the equity interests of UWiZ Technology Co., Ltd. (“UWiZ”) for TWD 823.4 million (approximately $ 26.9 million) in cash . Its products include a range of slurry-based polishing products for the semiconductor and optoelectronics industry within the Color Solutions reportable segment. The information included herein has been prepared based on the allocation of the purchase price using fair value and useful lives of the assets acquired and liabilities assumed, which were determined with the assistance of third parties who performed independent valuations using discounted cash flow and comparative market approaches, and estimates made by management. The Company recorded $ 12.5 million of net working capital, $ 7.1 million of goodwill, $ 6.6 million of amortizable intangible assets, $ 2.4 million of personal and real property and $ 1.7 million of deferred tax liability on the consolidated balance sheets. Ernst Diegel GmbH On August 31, 2018, the Company acquired 100 % of the equity interests of Ernst Diegel GmbH (“Diegel”), including the real property of a related party, for 12.1 million euros (approximately $ 14.0 million) in cash . Its products include decorative coatings for glass and high-performance plastics coatings, primarily in automotive applications within the Performance Colors and Glass reportable segment. The information included herein has been prepared based on the allocation of the purchase price using the fair value and useful lives of the assets acquired and liabilities assumed, which were determined with the assistance of third parties who performed independent valuations using discounted cash flow and comparative market approaches, and estimates made by management. The Company recorded $ 7.0 million of personal and real property, $ 4.8 million of net working capital, $ 2.0 million of amortizable intangible assets, $ 1.7 million of goodwill and $ 1.5 million of deferred tax liability on the consolidated balance sheets. MRA Laboratories, Inc. On July 12, 2018, the Company acquired 100 % of the equity interests of MRA Laboratories, Inc. (“MRA”) for $ 16.0 million in cash . Its products include dielectrics and electronic ink products for passive component applications within the Performance Colors and Glass reportable segment. The information included herein has been prepared based on the allocation of the purchase price using the fair value and useful lives of the assets acquired and liabilities assumed, which were determined with the assistance of third parties who performed independent valuations using discounted cash flow and comparative market approaches, and estimates made by management. The Company recorded $ 7.2 million of goodwill, $ 6.7 million of amortizable intangible assets, $ 3.4 million of net working capital, $ 1.6 million of deferred tax liability and $ 0.3 million of personal and real property on the consolidated balance sheets. PT Ferro Materials Utama On June 29, 2018, the Company acquired 66 % of the equity interests of PT Ferro Materials Utama (“FMU”) for $ 2.7 million in cash, in addition to the forgiveness of debt of $ 9.2 million, bringing our total ownership to 100 %. Its products include additives and ceramics color products within the legacy Performance Coatings reportable segment. The Company previously recorded its investment in FMU as an equity method investment, and following this transaction, the Company fully consolidates FMU. Due to the change of control that occurred, the Company recorded a gain on purchase of $ 2.6 million, which is recorded in Miscellaneous expense (income), net, related to the difference between the Company’s carrying value and fair value of the previously held equity method investment during the second quarter of 2018. During the fourth quarter of 2019, substantially all of the assets and liabilities of FMU were classified as held-for-sale in the accompanying consolidated balance sheets and associated operating results, net of income tax, classified as discontinued operations in the accompanying consolidated statements of operations in conjunction with the planned sale of the Tile Coatings business discussed in Note 4. Endeka Group On November 1, 2017, the Company acquired 100 % of the equity interests of Endeka Group (“Endeka”). Its products include high-value coatings and key raw materials for the ceramic tile market within the legacy Performance Coatings reportable segment. Endeka was acquired for € 72.8 million (approximately $ 84.8 million), including the assumption of debt of € 13.1 million (approximately $ 15.3 million). The Company incurred acquisition costs of $ 0.5 million and $ 2.5 million for the year ended December 31, 2018 and 2017, respectively, which is included in Selling, general and administrative expenses in our consolidated statements of operations. The information included herein has been prepared based on the allocation of the purchase price using the fair value and useful lives of the assets acquired and liabilities assumed, which were determined with the assistance of third parties who performed independent valuations using discounted cash flow and comparative market approaches, and estimates made by management. During 2018, the Company adjusted the net working capital on the opening balance sheet and as such, the carrying amount of the personal and real property decreased $ 5.9 million. The Company recorded $ 44.1 million of net working capital, $ 25.9 million of deferred tax assets, $ 15.9 million of personal and real property and $ 1.1 million of noncontrolling interest on the consolidated balance sheet. During the fourth quarter of 2019, a portion of the assets and liabilities of Endeka were classified as held-for-sale in the accompanying consolidated balance sheets and associated operating results, net of income tax, classified as discontinued operations in the accompanying consolidated statements of operations in conjunction with the planned sale of the Tile Coatings business discussed in Note 4. Gardenia Quimica S.A. On August 3, 2017, the Company acquired a majority interest in Gardenia Quimica S.A. (“Gardenia”) for $ 3.0 million which was included within the legacy Performance Coatings reportable segment . The Company previously owned 46 % of Gardenia and recorded it as an equity method investment. Following this transaction, the Company owned 83.5 % and fully consolidates Gardenia. Due to a change of control that occurred, the Company recorded a gain on purchase of $ 2.6 million related to the difference between the Company’s carrying value and fair value of the previously held equity method investment. On March 1, 2018, the Company acquired the remaining equity interest in Gardenia for $ 1.4 million. During the fourth quarter of 2019, a portion of the assets and liabilities of Gardenia were classified as held-for-sale in the accompanying consolidated balance sheets and associated operating results, net of income tax, classified as discontinued operations in the accompanying consolidated statements of operations in conjunction with the planned sale of the Tile Coatings business discussed in Note 4. Dip Tech Ltd. On August 2, 2017, the Company acquired 100 % of the equity interests of Dip Tech Ltd. (“Dip-Tech”), a leading provider of digital printing solutions for glass, for $ 77.0 million. Dip-Tech is headquartered in Kfar Saba, Israel. Dip-Tech is recorded within our Performance Colors and Glass reportable segment. The purchase consideration consisted of cash paid at closing of $ 60.1 million, net of the net working capital adjustment, and contingent consideration of $ 16.9 million. The Company incurred acquisition costs of $ 0.1 million and $ 3.2 million for the year ended December 31, 2018 and 2017, respectively, which is included in Selling, general and administrative expenses in our consolidated statements of operations. The information included herein has been prepared based on the allocation of the purchase price using the fair value and useful lives of the assets acquired and liabilities assumed, which were determined with the assistance of third parties who performed independent valuations using discounted cash flow and comparative market approaches, and estimates made by management. The Company recorded $ 41.2 million of amortizable intangible assets, $ 33.5 million of goodwill, $ 7.2 million of deferred tax liabilities, $ 5.1 million of indefinite-lived intangible assets, $ 3.2 million of personal and real property and $ 1.2 million of net working capital on the consolidated balance sheets. Smalti per Ceramiche, s.r.l On April 24, 2017, the Company acquired 100 % of the equity interests of S.P.C. Group s.r.l., and 100 % of the equity interest of Smalti per Ceramiche, s.r.l. (together “SPC”), for € 18.7 million (approximately $ 20.3 million), including the assumption of debt of € 5.7 million (approximately $ 6.2 million). SPC is a high-end tile coatings manufacturer based in Italy focused on fast-growing specialty products. SPC’s products, strong technology, design capabilities, and customer-centric business model are complementary to our legacy Performance Coatings reportable segment, and position us for continued growth in the high-end tile markets . The Company incurred acquisition costs for the year ended December 31, 2017, of $ 1.5 million which is included in Selling, general and administrative expenses in our consolidated statements of operations. The information included herein has been prepared based on the allocation of the purchase price using the fair value and useful lives of the assets acquired and liabilities assumed, which were determined with the assistance of third parties who performed independent valuations using discounted cash flow and comparative market approaches, and estimates made by management. The Company recorded $ 6.1 million of personal and real property, $ 6.0 million of amortizable intangible assets, $ 5.2 million of goodwill, $ 5.0 million of net working capital and $ 2.0 million of a deferred tax liability on the consolidated balance sheets. During the fourth quarter of 2019, substantially all of the assets and liabilities of SPC were classified as held-for-sale in the accompanying consolidated balance sheets and associated operating results, net of income tax, classified as discontinued operations in the accompanying consolidated statements of operations in conjunction with the planned sale of the Tile Coatings business discussed in Note 4.

Inventories

Inventories	12 Months Ended
	Dec. 31, 2019
Inventories [Abstract]
Inventories	6. Inventories Inventory at December 31 consisted of the following: 2019 2018 (Dollars in thousands) Raw materials $ 80,265 $ 77,836 Work in process 49,717 42,093 Finished goods 134,640 125,842 Total inventories $ 264,622 $ 245,771 In the production of some of our products, we use precious metals, some of which we obtain from financial institutions under consignment agreements with terms of one year or less. The financial institutions retain ownership of the precious metals and charge us fees based on the amounts we consign. These fees were $ 3.1 million for 2019, $ 2.1 million for 2018, and $ 1.2 million for 2017. We had on hand precious metals owned by participants in our precious metals consignment program of $ 66.2 million at December 31, 2019 and $ 55.2 million at December 31, 2018, measured at fair value based on market prices for identical assets.

Property, Plant And Equipment

Property, Plant And Equipment	12 Months Ended
	Dec. 31, 2019
Property, Plant And Equipment [Abstract]
Property, Plant And Equipment	7. Property, Plant and Equipment Property, Plant and Equipment at December 31 consisted of the following: 2019 2018 (Dollars in thousands) Land $ 35,564 $ 36,460 Buildings 152,586 152,221 Machinery and equipment 427,081 401,038 Construction in progress 92,442 71,079 Total property, plant and equipment 707,673 660,798 Total accumulated depreciation ( 407,668 ) ( 385,259 ) Property, plant and equipment, net $ 300,005 $ 275,539 Depreciation expense was $ 28.3 million for 2019, $ 27.3 million for 2018, and $ 26.8 million for 2017. Additional depreciation expense of $ 11.3 million for 2019, $ 10.8 million for 2018, and $ 10.1 million for 2017 were classified within Income (loss) from discontinued operations, net of income taxes. Noncash investing activities for capital expenditures, consisting of new capital leases during the year and unpaid capital expenditure liabilities at year end, were $ 3.5 million for 2019, $ 7.7 million for 2018, and $ 8.4 million for 2017. As discussed in Note 4, the assets of our Tile Coatings business have been classified as held-for-sale under ASC Topic 360; Property, Plant and Equipment ; until the ultimate sale of the business. As such, at each historical reporting date, these assets were tested for impairment comparing the fair value of the assets less costs to sell to the carrying value. The fair value was determined using both the market approach and income approach, utilizing Level 3 measurements within the fair value hierarchy, which indicated the fair value less costs to sell exceeded the carrying value. As a result, we recorded no impairment charges related to property, plant and equipment as a result of the analysis.

Goodwill And Other Intangible A

Goodwill And Other Intangible Assets	12 Months Ended
	Dec. 31, 2019
Goodwill And Other Intangible Assets [Abstract]
Goodwill And Other Intangible Assets	8. Goodwill and Other Intangible Assets Details and activity in the Company’s goodwill by segment are as follows: Performance Colors and Color Glass Solutions Total (Dollars in thousands) Goodwill, net at December 31, 2017 $ 114,934 $ 42,535 $ 157,469 Acquisitions (1) 8,530 8,857 17,387 Foreign currency adjustments ( 1,056 ) ( 847 ) ( 1,903 ) Goodwill, net at December 31, 2018 $ 122,408 $ 50,545 $ 172,953 Foreign currency adjustments ( 506 ) ( 238 ) ( 744 ) Goodwill, net at December 31, 2019 $ 121,902 $ 50,307 $ 172,209 (1) During 2018, the Company recorded: 1) goodwill related to the UWiZ and Diegel acquisitions within the Color Solutions segment and 2) goodwill related to the MRA acquisition and a purchase price adjustment within the measurement period for goodwill related to the Dip-Tech acquisition within the Performance Colors and Glass segment. Refer to Note 5 for additional details on the acquisitions mentioned above. December 31, December 31, 2019 2018 (Dollars in thousands) Goodwill, gross $ 230,676 $ 231,420 Accumulated impairment losses ( 58,467 ) ( 58,467 ) Goodwill, net $ 172,209 $ 172,953 During the fourth quarter of 2019 and 2018, we performed our annual goodwill impairment testing. The test entailed comparing the fair value of our reporting units to their carrying value as of the measurement date of October 31, 2019 and October 31, 2018, respectively. We performed step 1 of the annual impairment test as defined in ASC Topic 350, Intangibles - Goodwill and Other . We estimate fair values of the reporting units using the average of both the income approach and the market approach, which we believe provides a reasonable estimate of the reporting units’ fair values, unless facts and circumstances exist that indicate more representative fair values. The income approach uses projected cash flows attributable to the reporting units and allocates certain corporate expenses to the reporting units. We use historical results, trends and our projections of market growth, internal sales efforts and anticipated cost structure assumptions to estimate future cash flows. Using a risk-adjusted, weighted-average cost of capital, we discount the cash flow projections to the measurement date. As a result of the 2019 assessment, there were no impairment indicators. The significant assumptions and ranges of assumptions we used in our impairment analyses of goodwill follow: Significant Assumptions 2019 2018 Weighted-average cost of capital 11.5 % - 12.0 % 13.0 % - 14.75 % Residual growth rate 3.0 % 3.0 % D uring our 2018 and 2017 assessments, the result of the goodwill impairment test was that there were no indicators of impairment. The Company is not aware of any events or circumstances that occurred between the annual assessment date and December 31, 2019, which would require further testing of goodwill for impairment. During 2019, the assets pertaining to our Tile Coatings business were classified as held-for-sale and the goodwill was immaterial at December 31, 2019. At December 31, 2018, $ 43.5 million of goodwill, net was classified as Non-current assets held-for-sale. Refer to Note 4 for additional information on our Tile Coatings business classified as held-for-sale. During 2019, the Company recorded goodwill impairment charges of $ 42.5 million within our Tile Coatings business, which is included in Net income from discontinued operations, net of taxes. The fair value of the assets within the Tile Coatings business was valued below its carrying value, resulting in a $ 33.5 million goodwill impairment charge in the fourth quarter. There were additional $ 5.9 million and $ 3.1 million of goodwill impairment charges in the second and third quarter of 2019, respectively, which was a result of the finalization of purchase accounting of the Quimicer, FMU, and Gardenia acquisitions . A mortizable intangible assets at December 31 consisted of the following: Estimated Economic Life 2019 2018 (Dollars in thousands) Gross amortizable intangible assets: Patents 10 - 16 years $ 5,434 $ 5,462 Land rights 20 - 40 years 2,979 3,015 Technology/know-how and other 1 - 30 years 122,088 112,734 Customer relationships 10 - 20 years 66,454 68,184 Total gross amortizable intangible assets 196,955 189,395 Accumulated amortization: Patents ( 5,413 ) ( 5,441 ) Land rights ( 1,452 ) ( 1,389 ) Technology/know-how and other ( 60,121 ) ( 42,337 ) Customer relationships ( 14,831 ) ( 11,078 ) Total accumulated amortization ( 81,817 ) ( 60,245 ) Amortizable intangible assets, net $ 115,138 $ 129,150 We amortize amortizable intangible assets on a straight-line basis over the estimated useful lives of the assets. Amortization expense related to amortizable intangible assets was $ 13.0 million for 2019, $ 12.6 million for 2018, and $ 10.1 million for 2017. Amortization expense for amortizable intangible assets is expected to be approximately $ 12.4 million for 2020, $ 11.2 million for 2021, $ 11.0 million for 2022, $ 10.8 million for 2023, and $ 10.8 million for 2024. Indefinite-lived intangible assets at December 31 consisted of the following: 2019 2018 (Dollars in thousands) Indefinite-lived intangibles assets: Trade names and trademarks $ 12,682 $ 12,813

Debt And Other Financing

Debt And Other Financing	12 Months Ended
	Dec. 31, 2019
Debt And Other Financing [Abstract]
Debt And Other Financing	9. Debt and Other Financing Loans payable and current portion of long-term debt at December 31 consisted of the following: 2019 2018 (Dollars in thousands) Loans payable $ — $ 50 Current portion of long-term debt 8,703 8,871 Loans payable and current portion of long-term debt $ 8,703 $ 8,921 Long-term debt at December 31 consisted of the following: 2019 2018 (Dollars in thousands) Term loan facility, net of unamortized issuance costs, maturing 2024 (1) $ 801,764 $ 809,022 Capital lease obligations 2,305 1,832 Other notes 3,496 4,098 Total long-term debt 807,565 814,952 Current portion of long-term debt ( 8,703 ) ( 8,871 ) Long-term debt, less current portion $ 798,862 $ 806,081 (1) The carrying value of the term loan facility, maturing 2024, is net of unamortized debt issuance costs of $ 3.9 million at December 31, 2019 and $ 4.8 million at December 31, 2018. The annual maturities of long-term debt for each of the five years after December 31, 2019, are as follows (in thousands): 2020 $ 8,938 2021 8,819 2022 8,810 2023 8,719 2024 773,275 Thereafter 3,550 Total maturities of long-term debt 812,111 Unamortized issuance costs on Term loan facility ( 3,886 ) Imputed interest and executory costs on capitalized lease obligations ( 660 ) Total long-term debt $ 807,565 Amended Credit Facility On April 25, 2018, the Company entered into an amendment (the “Amended Credit Facility”) to its existing credit facility (the “Credit Facility”), which Amended Credit Facility (a) provided a new revolving facility (the “2018 Revolving Facility”), which replaced the Company’s existing revolving facility, (b) repriced the (“Tranche B-1 Loans”), and (c) provided new tranches of term loans (“Tranche B-2 Loans” and “Tranche B-3 Loans”) denominated in U.S. dollars. The Amended Credit Facility will be used for ongoing working capital requirements and general corporate purposes. The Tranche B-2 Loans are borrowed by the Company and the Tranche B-3 Loans are borrowed on a joint and several basis by Ferro GmbH and Ferro Europe Holdings LLC. The Amended Credit Facility consists of a $ 500 million secured revolving line of credit with a maturity of February 14, 2023 , a $ 355 million secured term loan facility with a maturity of February 14, 2024 , a $ 235 million secured term loan facility with a maturity of February 14, 2024 and a $ 230 million secured term loan facility with a maturity of February 14, 2024 . The term loans are payable in equal quarterly installments in an amount equal to 0.25 % of the original principal amount of the term loans, with the remaining balance due on the maturity date thereof. In addition, the Company is required, on an annual basis, to make a prepayment in an amount equal to a portion of the Company’s excess cash flow, as calculated pursuant to the Amended Credit Facility, which prepayment will be applied first to the term loans until they are paid in full, and then to the revolving loans. Subject to the satisfaction of certain conditions, the Company can request additional commitments under the revolving line of credit or term loans in the aggregate principal amount of up to $ 250 million to the extent that existing or new lenders agree to provide such additional commitments and/or term loans. The Company can also raise certain additional debt or credit facilities subject to satisfaction of certain covenant levels. Certain of the Company’s U.S. subsidiaries have guaranteed the Company’s obligations under the Amended Credit Facility and such obligations are secured by (a) substantially all of the personal property of the Company and the U.S. subsidiary guarantors and (b) a pledge of 100 % of the stock of certain of the Company’s U.S. subsidiaries and 65 % of the stock of certain of the Company’s direct foreign subsidiaries. The Tranche B-3 Loans are guaranteed by the Company, the U.S. subsidiary guarantors and a cross-guaranty by the borrowers of the Tranche B-3 Loans, and are secured by the collateral securing the revolving loans and the other term loans, in addition to a pledge of the equity interests of Ferro GmbH. Interest Rate – Term Loans: The interest rates applicable to the term loans will be, at the Company’s option, equal to either a base rate or a LIBOR rate plus, in both cases, an applicable margin.  The base rate for term loans will be the highest of (i) the federal funds rate plus 0.50 %, (ii) syndication agent’s prime rate, (iii) the daily LIBOR rate plus 1.00 % or (iv) 0.00 %. The applicable margin for base rate loans is 1.25 %.  The LIBOR rate for term loans shall not be less than 0.0% and the applicable margin for LIBOR rate term loans is 2.25 %.  For LIBOR rate term loans, the Company may choose to set the duration on individual borrowings for periods of one, two, three or six months, with the interest rate based on the applicable LIBOR rate for the corresponding duration. At December 31, 2019, the Company had borrowed $ 348.8 million under the Tranche B-1 Loans at an interest rate of 4.19 %, $ 230.9 million under the Tranche B-2 Loans at an interest rate of 4.19 %, and $ 226.0 million under the Tranche B-3 Loans at an interest rate of 4.19 %. At December 31, 2019, there were no additional borrowings available under the Tranche B-1 Loans, Tranche B-2 Loans, and Tranche B-3 Loans. In connection with these borrowings, we entered into swap agreements in the second quarter of 2018. At December 31, 2019, the effective interest rate for the Tranche B-1 Loans, Tranche B-2 Loans, and Tranche B-3 Loans, after adjusting for the interest rate swap, was 5.10 %, 2.96 %, and 2.48 %, respectively. At December 31, 2018, the Company had borrowed $ 352.3 million under the Tranche B-1 Loans at an interest rate of 5.05 %, $ 233.2 million under the Tranche B-2 Loans at an interest rate of 5.05 %, and $ 228.3 million under the Tranche B-3 Loans at an interest rate of 5.05 %. At December 31, 2018, there were no additional borrowings available under the Tranche B-1 Loans, Tranche B-2 Loans, and Tranche B-3 Loans. In connection with these borrowings, we entered into swap agreements in the second quarter of 2018. At December 31, 2018, the effective interest rate for the Tranche B-1 Loans, Tranche B-2 Loans, and Tranche B-3 Loans, after adjusting for the interest rate swap, was 5.19 %, 3.43 %, and 2.48 %, respectively. Interest Rate – Revolving Credit Line: The interest rates applicable to loans under the 2018 Revolving Credit Facility will be, at the Company’s option, equal to either a base rate or a LIBOR rate plus, in both cases, an applicable variable margin. The variable margin will be based on the ratio of (a) the Company’s total consolidated net debt outstanding (as defined in the Amended Credit Agreement) at such time to (b) the Company’s consolidated EBITDA (as defined in the Amended Credit Agreement) computed for the period of four consecutive fiscal quarters most recently ended.  The base rate for revolving loans will be the highest of (i) the federal funds rate plus 0.50 %, (ii) the syndication agent’s prime rate, (iii) the daily LIBOR rate plus 1.00 % or (iv) 0.00 %. The applicable margin for base rate loans will vary between 0.50 % to 1.50 %.  The LIBOR rate for revolving loans shall not be less than 0 % and the applicable margin for LIBOR rate revolving loans will vary between 1.50 % and 2.50 %.  For LIBOR rate revolving loans, the Company may choose to set the duration on individual borrowings for periods of one, two, three or six months, with the interest rate based on the applicable LIBOR rate for the corresponding duration. At December 31, 2019, there were no borrowings under the 2018 Revolving Credit Facility. After reductions for outstanding letters of credit secured by these facilities, we had $ 495.8 million of additional borrowings available under the revolving credit facilities at December 31, 2019. The Amended Credit Facility contains customary restrictive covenants including, but not limited to, limitations on use of loan proceeds, limitations on the Company’s ability to pay dividends and repurchase stock, limitations on acquisitions and dispositions, and limitations on certain types of investments. The Amended Credit Facility also contains standard provisions relating to conditions of borrowing and customary events of default, including the non-payment of obligations by the Company and the bankruptcy of the Company. Specific to the 2018 Revolving Facility, the Company is subject to a financial covenant regarding the Company’s maximum leverage ratio. If an event of default occurs, all amounts outstanding under the Amended Credit Facility agreement may be accelerated and become immediately due and payable. At December 31, 2019, we were in compliance with the covenants of the Amended Credit Facility. Credit Facility On February 14, 2017, the Company entered into a credit facility (the “Credit Facility”) with a group of lenders to refinance its then outstanding credit facility debt and to provide liquidity for ongoing working capital requirements and general corporate purposes. The Credit Facility consisted of a $ 400 million secured revolving line of credit with a term of five year s, a $ 357.5 million secured term loan facility with a term of seven year s and a € 250 million secured Euro term loan facility with a term of seven year s. The term loans were payable in equal quarterly installments in an amount equal to 0.25 % of the original principal amount of the term loans, with the remaining balance due on the maturity date thereof. In addition, the Company was required, on an annual basis, to make a prepayment of term loans until they were fully paid and then to the revolving loans in an amount equal to a portion of the Company’s excess cash flow, as calculated pursuant to the Credit Facility. Subject to the satisfaction of certain conditions, the Company could request additional commitments under the revolving line of credit or term loans in the aggregate principal amount of up to $ 250 million, to the extent that existing or new lenders agree to provide such additional commitments and/or term loans. The Company could also raise certain additional debt or credit facilities subject to satisfaction of certain covenant levels. Certain of the Company’s U.S. subsidiaries guaranteed the Company’s obligations under the Credit Facility and such obligations were secured by (a) substantially all of the personal property of the Company and the U.S. subsidiary guarantors and (b) a pledge of 100 % of the stock of certain of the Company’s U.S. subsidiaries and 65 % of the stock of certain of the Company’s direct foreign subsidiaries. Interest Rate – Term Loans: The interest rates applicable to the U.S. term loans was, at the Company’s option, equal to either a base rate or a LIBOR rate plus, in both cases, an applicable margin. The interest rates applicable to the Euro term loans was a Euro Interbank Offered Rate (“EURIBOR”) rate plus an applicable margin.  The base rate for U.S. term loans will be the highest of (i) the federal funds rate plus 0.50 %, (ii) the syndication agent’s prime rate or (iii) the daily LIBOR rate plus 1.00 %. The applicable margin for base rate loans is 1.50 %.  The LIBOR rate for U.S. term loans shall not be less than 0.75 % and the applicable margin for LIBOR rate U.S. term loans is 2.50 %.  The EURIBOR rate for Euro term loans shall not be less than 0 % and the applicable margin for EURIBOR rate loans is 2.75 %.  For LIBOR rate term loans and EURIBOR rate term loans, the Company may choose to set the duration on individual borrowings for periods of one, two, three or six months, with the interest rate based on the applicable LIBOR rate or EURIBOR rate, as applicable, for the corresponding duration. At December 31, 2017, the Company had borrowed $ 354.8 million under the secured term loan facility at an interest rate of 4.07 % and € 248.1 million (approximately $ 297.9 million) under the secured Euro term loan facility at an interest rate of 2.75 %. At December 31, 2017, there were no additional borrowings available under the term loan facilities. We entered into interest rate swap agreements in the second quarter of 2017. These swaps converted $ 150 million and € 90 million of our term loans from variable interest rates to fixed interest rates. At December 31, 2017, the effective interest rate for the term loan facilities after adjusting for the interest rate swap was 4.27 % for the secured term loan facility and 3.00 % for the Euro term loan facility. Interest Rate – Revolving Credit Line: The interest rates applicable to loans under the revolving credit line was, at the Company’s option, equal to either a base rate or a LIBOR rate plus, in both cases, an applicable variable margin. The variable margin was based on the ratio of (a) the Company’s total consolidated net debt outstanding at such time to (b) the Company’s consolidated EBITDA computed for the period of four consecutive fiscal quarters most recently ended.  The base rate for revolving loans will be the highest of (i) the federal funds rate plus 0.50 %, (ii) the syndication agent’s prime rate or (iii) the daily LIBOR rate plus 1.00 %. The applicable margin for base rate loans will vary between 0.75 % and 1.75 %.  The LIBOR rate for revolving loans shall not be less than 0 % and the applicable margin for LIBOR rate revolving loans will vary between 1.75 % and 2.75 %.  For LIBOR rate revolving loans, the Company may choose to set the duration on individual borrowings for periods of one, two, three or six months, with the interest rate based on the applicable LIBOR rate for the corresponding duration. At December 31, 2017, there were $ 78.0 million of borrowings under the revolving credit line at an interest rate of 3.63 %. After reductions for outstanding letters of credit secured by these facilities, we had $ 317.3 million of additional borrowings available under the revolving credit facilities at December 31, 2017. The Credit Facility contained customary restrictive covenants including, but not limited to, limitations on use of loan proceeds, limitations on the Company’s ability to pay dividends and repurchase stock, limitations on acquisitions and dispositions, and limitations on certain types of investments. The Credit Facility also contained standard provisions relating to conditions of borrowing and customary events of default, including the non-payment of obligations by the Company and the bankruptcy of the Company. Specific to the revolving credit facility, the Company was subject to a financial covenant regarding the Company’s maximum leverage ratio. If an event of default occurs, all amounts outstanding under the Credit Facility may be accelerated and become immediately due and payable. At December 31, 2017, we were in compliance with the covenants of the Credit Facility. In conjunction with the refinancing of the Credit Facility, we recorded a charge of $ 3.2 million in connection with the write-off of unamortized issuance costs, which is recorded within Loss on extinguishment of debt in our consolidated statement of operations for the year ended December 31, 2018. 2014 Credit Facility In 2014, the Company entered into a credit facility, (the “2014 Credit Facility”), that was amended on January 25, 2016, and August 29, 2016, resulting in a $ 400 million secured revolving line of credit with a term of five year s and a $ 300 million secured term loan facility with a term of seven year s from the original issuance date with a group of lenders that was replaced on February 14, 2017, by the Credit Facility (as defined above). In conjunction with the refinancing of the 2014 Credit Facility, we recorded a charge of $ 3.9 million in connection with the write-off of unamortized issuance costs, which is recorded within Loss on extinguishment of debt in our consolidated statement of operations for the year ended December 31, 2017. International Receivable Sales Programs We have several international programs to sell without recourse trade accounts receivable to financial institutions. These transactions are treated as a sale and are accounted for as a reduction in accounts receivable because the agreements transfer effective control over and risk related to the receivables to the buyers. The Company continues to service the receivables sold in exchange for a fee. The servicing fee for the year ended December 31, 2019 and 2018, was immaterial. The program, whose maximum capacity is € 100 million, is scheduled to expire on December 31, 2023 . Generally, at the transfer date, the Company receives cash equal to approximately 65 % of the value of the sold receivable. Cash proceeds at the transfer date from these arrangements are reflected in operating activities in our consolidated statement of cash flows. The proceeds from the deferred purchase price are reflected in investing activities. The outstanding principal amount of receivables sold under this program was $ 19.3 million at December 31, 2019 and $ 10.9 million at December 31, 2018. The carrying amount of the deferred purchase was $ 6.6 million at December 31, 2019 and $ 1.8 million at December 31, 2018, and is recorded in Other receivables. As discussed in Note 4, during the fourth quarter of 2019, we entered into a definitive agreement to sell our Tile Coatings business. As such, our Tile Coatings business was classified as held-for-sale. At December 31, 2019 and 2018, $ 52.6 million and $ 60.4 million, respectively, of the outstanding principal amount of receivables sold under this program pertained to the Tile Coatings business. The carrying amount of the deferred purchase price at December 31, 2019 and 2018 was $ 20.5 million and $ 21.2 million, respectively. Both are recorded in Current assets held-for-sale in our consolidated balance sheets. 2019 2018 (Dollars in thousands) Trade accounts receivable sold to financial institutions $ 59,293 $ 13,788 — Cash proceeds from financial institutions (1) 39,958 8,282 — Trade accounts receivable collected to be remitted (2) 12,817 1,844 — (1) In 2019 and 2018, our Tile Coatings business received cash proceeds from financial institutions of $ 131.5 million and $ 49.0 million, respectively. Refer to Note 4 for additional discussion of the Tile Coatings business and its classification as discontinued operations. (2) Included in Accrued expense and other current liabilities. During 2019 and 2018, trade accounts receivable collected to be remitted of $ 12.8 million and $ 9.7 million, respectively, pertained to the Tile Coatings business and is included in Current liabilities held-for-sale in our consolidated balance sheets. Other Financing Arrangements We maintain other lines of credit to provide global flexibility for Ferro’s short-term liquidity requirements. These facilities are uncommitted lines for our international operations and totaled $ 28.1 million at December 31, 2019 and $ 31.4 million at December 31, 2018. The unused portions of these lines provided additional liquidity of $ 25.0 million at December 31, 2019 and $ 26.6 million at December 31, 2018.

Financial Instruments

Financial Instruments	12 Months Ended
	Dec. 31, 2019
Financial Instruments [Abstract]
Financial Instruments	10. Financial Instruments The following table presents financial instrument assets (liabilities) at the carrying amount, fair value and classification within the fair value hierarchy: December 31, 2019 Carrying Fair Value Amount Total Level 1 Level 2 Level 3 (Dollars in thousands) Cash and cash equivalents $ 96,202 $ 96,202 $ 96,202 $ — $ — Term loan facility - Amended Credit Facility (1) ( 801,764 ) ( 799,750 ) — ( 799,750 ) — Other long-term notes payable ( 3,496 ) ( 1,557 ) — ( 1,557 ) — Cross currency swaps 22,111 22,111 — 22,111 — Interest rate swaps ( 14,698 ) ( 14,698 ) — ( 14,698 ) — Foreign currency forward contracts, net 601 601 — 601 — December 31, 2018 Carrying Fair Value Amount Total Level 1 Level 2 Level 3 (Dollars in thousands) Cash and cash equivalents $ 96,101 $ 96,101 $ 96,101 $ — $ — Loans payable ( 50 ) ( 50 ) — ( 50 ) — Term loan facility - Credit Facility (1) ( 809,022 ) ( 796,796 ) — ( 796,796 ) — Other long-term notes payable ( 4,098 ) ( 1,772 ) — ( 1,772 ) — Cross currency swaps 17,104 17,104 — 17,104 — Interest rate swaps ( 5,244 ) ( 5,244 ) — ( 5,244 ) — Foreign currency forward contracts, net ( 270 ) ( 270 ) — ( 270 ) — (1) The carrying values of the term loan facilities are net of unamortized debt issuance costs of $ 3.9 million and $ 4.8 million for the period ended December 31, 2019, and December 31, 2018, respectively. The fair values of cash and cash equivalents are based on the fair values of identical assets. The fair values of loans payable are based on the present value of expected future cash flows and approximate their carrying amounts due to the short periods to maturity. The fair value of the term loan facility is based on market price information and is measured using the last available bid price of the instrument on a secondary market. The revolving credit facility and other long-term notes payable are based on the present value of expected future cash flows and interest rates that would be currently available to the Company for issuance of similar types of debt instruments with similar terms and remaining maturities adjusted for the Company's performance risk. The fair values of our interest rate swaps and cross currency swaps are determined based on inputs that are readily available in public markets or can be derived from information available in publicly quoted markets. The fair values of the foreign currency forward contracts are based on market prices for comparable contracts. Derivative Instruments The Company may use derivative instruments to partially offset its business exposure to foreign currency and interest rate risk on expected future cash flows, on net investment in certain foreign subsidiaries and on certain existing assets and liabilities. However, the Company may choose not to hedge in countries where it is not economically feasible to enter into hedging arrangements or where hedging inefficiencies exist, such as timing of transactions. Derivatives Designated as Hedging Instruments Cash Flow Hedges. For derivative instruments that are designated and qualify as cash flow hedges, the gain or loss on the derivative is recorded as a component of AOCL and reclassified into earnings in the same period during which the hedged transaction affects earnings. The Company utilizes interest rate swaps to limit exposure to market fluctuations on floating-rate debt. During the second quarter of 2017, the Company entered into interest rate swap agreements that converted $ 150 million and € 90 million of our term loans from variable interest rates to fixed interest rates. These swaps qualified for, and were designated as, cash flow hedges. The interest rate swap agreements were terminated in the second quarter of 2018 in connection with the refinancing of the Credit Facility. During the second quarter of 2018, the Company entered into variable to fixed interest rate swaps with a maturity date of February 14, 2024 . The notional amount was $ 314.4 million at December 31, 2019. These swaps are hedging risk associated with the Tranche B-1 Loans. These interest rate swaps are designated as cash flow hedges. As of December 31, 2019, the Company expects it will reclassify net losses of approximately $ 3.7 million, currently recorded in AOCL, into interest expense in earnings within the next twelve months. However, the actual amount reclassified could vary due to future changes in the fair value of these derivatives. The Company has converted a U.S. dollar denominated, variable rate debt obligation into a Euro fixed rate obligation using receive-float, pay-fixed cross currency swaps in the second quarter of 2018. These swaps are hedging currency and interest rate risk associated with the Tranche B-3 Loans. These cross currency swaps are designated as cash flow hedges. The notional amount was $ 226.0 million at December 31, 2019, with a maturity date of February 14, 2024 . The spot to spot change is recorded in Foreign currency losses, net, to offset the gain or loss recognized on the foreign denominated debt. As of December 31, 2019, the Company expects it will reclassify net gains of approximately $ 3.9 million, currently recorded in AOCL, into interest expense in earnings within the next twelve months. However, the actual amount reclassified could vary due to future changes in the fair value of these derivatives. The amount of gain (loss) recognized in AOCL and the amount of loss (gain) reclassified into earnings for the year ended December 31, 2019 and 2018, follow: Amount of Loss (Gain) Amount of Gain (Loss) Reclassified from Location of Gain (Loss) Recognized in AOCL AOCL into Income Reclassified from 2019 2018 2019 2018 AOCL into Income (Dollars in thousands) Interest rate swaps $ ( 11,050 ) $ ( 4,513 ) $ ( 441 ) $ ( 966 ) Interest expense Cross currency swaps 8,319 15,901 5,844 3,616 Interest expense $ 5,403 $ 2,650 Total Interest expense Cross currency swaps 4,759 14,509 Foreign currency losses, net $ 4,759 $ 14,509 Total Foreign currency losses, net The total amounts of expense and the respective line items in which the effect of cash flow hedges is presented in the condensed consolidated statement of operations for the year ended December 31, 2019 and 2018, are as follows: 2019 2018 (Dollars in thousands) Interest expense $ 24,302 $ 23,659 Foreign currency losses, net 9,166 6,335 During the fourth quarter of 2019, the company entered into foreign currency forward contracts to mitigate the impact of currency fluctuations on transactions arising from international trade. The gain or loss on the derivative is recorded as a component of AOCL and reclassified into earnings in the same period during which the hedged transaction affects earnings. Net Investment Hedge. For derivatives that are designated and qualify as net investment hedges, the gain or loss on the derivative is reported as a component of the currency translation adjustment in AOCL. These cross currency swaps are designated as hedges of our net investment in European operations. Time value is excluded from the assessment of effectiveness and the amount of interest paid or received on the swaps will be recognized as an adjustment to interest expense in earnings over the life of the swaps. In the second quarter of 2017, the Company designated a portion of its Euro denominated debt as a net investment hedge for accounting purposes. This net investment hedge was terminated in the second quarter of 2018. In the second quarter of 2018, the Company entered into cross currency swap agreements where we pay variable rate interest in Euros and receive variable rate interest in U.S. dollars. The notional amount was € 96.2 million at December 31, 2019, with a maturity date of February 14, 2024 . These swaps are hedging risk associated with the net investment in Euro denominated operations due to fluctuating exchange rates and are designated as net investment hedges. The changes in the fair value of these designated cross-currency swaps will be recognized in AOCL. The amount of gain (loss) on net investment hedges recognized in AOCL, the amount reclassified into earnings and the amount of gain recognized in income on derivative (amount excluded from effectiveness testing) for the year ended December 31, 2019 and 2018, follow: Amount of Gain Amount of Gain Recognized in Amount of Gain Reclassified from Income on Derivative (Amount Recognized in AOCL AOCL into Income Excluded from Effectiveness Testing) Location of Gain 2019 2018 2019 2018 2019 2018 in Earnings (Dollars in thousands) Cross currency swaps $ 6,330 $ 7,243 $ — $ — $ 3,688 $ 2,261 Interest expense Derivatives Not Designated as Hedging Instruments Foreign currency forward contracts. We manage foreign currency risks principally by entering into forward contracts to mitigate the impact of currency fluctuations on transactions. These forward contracts are not formally designated as hedges. Gains and losses on these foreign currency forward contracts are netted with gains and losses from currency fluctuations on transactions arising from international trade, primarily intercompany transactions, and reported as Foreign currency losses, net in the consolidated statements of operations. We incurred net losses of $ 2.5 million in 2019, approximately zero in 2018, and $ 2.9 million in 2017, arising from the change in fair value of our financial instruments, which are netted against the related net gains and losses on international trade transactions. The fair values of these contracts are based on market prices for comparable contracts. The notional amount of foreign currency forward contracts was $ 625.9 million at December 31, 2019 and $ 387.2 million at December 31, 2018. The following table presents the effect on our consolidated statements of operations for the years ended December 31, 2019, 2018 and 2017, respectively, of foreign currency forward contracts: Amount of Loss Recognized in Earnings 2019 2018 2017 Location of Loss in Earnings (Dollars in thousands) Foreign currency forward contracts $ ( 2,462 ) $ ( 12 ) $ ( 2,938 ) Foreign currency losses, net Location and Fair Value Amount of Derivative Instruments The following table presents the fair values of our derivative instruments on our consolidated balance sheets at December 31, 2019 and 2018. All derivatives are reported on a gross basis. 2019 2018 Balance Sheet Location (Dollars in thousands) Asset derivatives: Cross currency swaps $ 6,711 $ 9,606 Other current assets Cross currency swaps 15,400 7,498 Other non-current assets Foreign currency forward contracts 1,474 626 Other current assets Liability derivatives: Interest rate swaps $ ( 3,723 ) $ ( 755 ) Accrued expenses and other current liabilities Interest rate swaps ( 10,975 ) ( 4,489 ) Other non-current liabilities Foreign currency forward contracts ( 873 ) ( 896 ) Accrued expenses and other current liabilities

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2019
Income Taxes [Abstract]
Income Taxes	11. Income Taxes Income tax expense (benefit) is based on our earnings from continuing operations before income taxes as presented in the following table: 2019 2018 2017 (Dollars in thousands) U.S. $ 18,709 $ 13,854 $ 20,816 Foreign 24,802 57,196 62,499 Total $ 43,511 $ 71,050 $ 83,315 Our income tax expense (benefit) from continuing operations consists of the following components: 2019 2018 2017 (Dollars in thousands) Current: U.S. federal $ 475 $ 449 $ 714 Foreign 18,358 19,548 25,908 State and local 168 211 123 Total current 19,001 20,208 26,745 Deferred: U.S. federal ( 3,832 ) 3,265 25,125 Foreign ( 8,340 ) ( 9,157 ) ( 5,801 ) State and local 1,290 ( 186 ) 344 Total deferred ( 10,882 ) ( 6,078 ) 19,668 Total income tax expense (benefit) $ 8,119 $ 14,130 $ 46,413 In addition, income tax expense (benefit) that we allocated directly to Ferro Corporation shareholders’ equity is detailed in the following table: 2019 2018 2017 (Dollars in thousands) Interest rate swaps $ ( 3,210 ) $ ( 1,529 ) $ 547 Postretirement benefit liability adjustments 11 ( 32 ) 1 Net investment hedge 654 954 ( 4,025 ) Foreign currency translations 27 — — Total income tax (benefit) expense allocated to Ferro Corporation shareholders' equity $ ( 2,518 ) $ ( 607 ) $ ( 3,477 ) A reconciliation of the U.S. federal statutory income tax rate and our effective tax rate follows: 2019 2018 2017 U.S. federal statutory income tax rate 21.0 % 21.0 % 35.0 % Foreign tax rate difference 9.8 7.4 ( 5.9 ) Non-deductible expenses 4.4 2.9 0.1 Global intangible low-taxed income, net 2.8 1.8 — Other 2.8 ( 2.5 ) ( 1.9 ) Uncertain tax positions, net of tax audit settlements 1.7 3.8 7.0 Foreign currency 1.4 0.3 0.7 Foreign withholding taxes 1.3 1.0 0.7 State taxes 1.3 0.7 ( 0.6 ) Tax rate changes 0.9 ( 3.0 ) 25.2 Goodwill dispositions, impairments and amortization ( 1.2 ) — ( 0.5 ) Tax credits ( 3.2 ) ( 1.7 ) ( 1.2 ) Foreign derived intangible income deduction ( 3.2 ) ( 1.6 ) — Net adjustment of prior year accrual ( 5.0 ) ( 4.2 ) ( 1.0 ) Adjustment of valuation allowances ( 16.1 ) ( 6.0 ) ( 1.9 ) Effective tax rate 18.7 % 19.9 % 55.7 % On December 22, 2017, U.S. federal tax legislation was enacted containing a broad range of tax reform provisions including a corporate tax rate reduction. In 2017, the write-down of U.S. net deferred tax assets to reflect the reduction in the U.S. corporate tax rate from 35 percent to 21 percent resulted in additional tax expense of $ 21.5 million. We have refundable income taxes of $ 16.9 million at December 31, 2019 and $ 13.5 million at December 31, 2018, classified as Other receivables on our consolidated balance sheets. We also have income taxes payable of $ 8.4 million at December 31, 2019, and $ 6.0 million at December 31, 2018, classified as Accrued expenses and other current liabilities on our consolidated balance sheets. The components of deferred tax assets and liabilities at December 31, 2019 and 2018 were: 2019 2018 (Dollars in thousands) Deferred tax assets: Foreign operating loss carryforwards $ 35,394 $ 41,611 Pension and other benefit programs 39,633 37,397 Foreign tax credit carryforwards 11,423 17,356 Accrued liabilities 10,726 11,114 Other credit carryforwards 6,707 5,815 Other 11,161 9,035 State and local operating loss carryforwards 2,058 2,272 Inventories 2,366 2,153 Allowance for doubtful accounts 746 704 Currency differences 1,407 — Total deferred tax assets 121,621 127,457 Deferred tax liabilities: Property, plant and equipment and intangibles -- depreciation and amortization 23,617 28,601 Unremitted earnings of foreign subsidiaries 1,594 1,575 Other 2,115 2,784 Total deferred tax liabilities 27,326 32,960 Net deferred tax assets before valuation allowance 94,295 94,497 Valuation allowance ( 10,447 ) ( 24,577 ) Net deferred tax assets $ 83,848 $ 69,920 The amounts of foreign operating loss carryforwards, foreign tax credit carryforwards, and other credit carryforwards included in the table of temporary differences are net of reserves for unrecognized tax benefits. At December 31, 2019, we had $ 36.4 million of state and local operating loss carryforwards and $ 157.9 million of foreign operating loss carryforwards, which can be carried forward indefinitely and others expire in one to twenty years. At December 31, 2019, we had $ 22.6 million in tax credit carryforwards, some of which can be carried forward indefinitely . These operating loss carryforwards and tax credit carryforwards expire as follows: Operating Loss Tax Credit Carryforwards Carryforwards Expiring in: (Dollars in thousands) 2020 $ 10,175 $ 137 2021-2025 23,953 10,791 2026-2030 22,814 6,469 2031-2035 11,943 3,267 2036-2040 81 966 2041-Indefinitely 125,307 987 Total $ 194,273 $ 22,617 We assess the available positive and negative evidence to determine if sufficient future taxable income will be generated to utilize the existing deferred tax assets. A significant piece of objective negative evidence evaluated by jurisdiction was whether a cumulative loss over the three-year period ended December 31, 2019 had been incurred. Such objective evidence limits the ability to consider other subjective evidence such as our projections for future income. Based on this assessment as of December 31, 2019, the Company has recorded a valuation allowance of $ 10.4 million in order to measure only the portion of the deferred tax assets that more likely than not will be realized. The most significant items that decreased the valuation allowance from 2018 to 2019 primarily related to the removal of a valuation allowance due to expiration of tax attributes and changes in Management’s assessment regarding the realizability of certain deferred tax assets. We classified net deferred income tax assets as of December 31, 2019 and 2018 as detailed in the following table: 2019 2018 (Dollars in thousands) Non-current assets $ 98,714 $ 88,526 Non-current liabilities ( 14,866 ) ( 18,606 ) Net deferred tax assets $ 83,848 $ 69,920 Activity and balances of unrecognized tax benefits are summarized below: 2019 2018 2017 (Dollars in thousands) Balance at beginning of year $ 24,869 $ 28,470 $ 30,085 Additions based on tax positions related to the current year 3,425 4,041 1,609 Additions for tax positions of prior years — 24 2,057 Reductions for tax positions of prior years — ( 1,710 ) ( 288 ) Reductions as a results of expiring statutes of limitations ( 688 ) ( 420 ) ( 6,284 ) Foreign currency adjustments ( 660 ) ( 786 ) 1,644 Settlements with taxing authorities ( 946 ) ( 4,750 ) ( 353 ) Balance at end of year $ 26,000 $ 24,869 $ 28,470 The total amount of unrecognized tax benefits that, if recognized, would affect the effective rate was $ 8.7 million at December 31, 2019, $ 9.2 million at December 31, 2018, and $ 9.8 million at December 31, 2017. The Company recognizes accrued interest and penalties related to unrecognized tax benefits as part of income tax expense. The Company recognized $ 0.5 million of expense in 2019, $ 0.4 million of expense in 2018, and $ 0.7 million of expense in 2017 for interest, net of tax, and related penalties. The Company accrued $ 2.9 million at December 31, 2019, $ 1.8 million at December 31, 2018, and $ 3.8 million at December 31, 2017 for payment of interest, net of tax, and penalties. We anticipate that $ 2.4 million of liabilities for unrecognized tax benefits, including accrued interest and penalties, may be reversed within the next 12 months. These liabilities relate to international tax issues and are expected to reverse due to the expiration of the applicable statute of limitations periods and the anticipation of the closure of tax examinations. The Company conducts business globally, and, as a result, the U.S. parent company or one of its subsidiaries files income tax returns in the U.S. federal jurisdiction and various state and foreign jurisdictions. In the normal course of business, the U.S. parent company and its subsidiaries are subject to examination by taxing authorities. With few exceptions, we are not subject to federal, state, local or non-U.S. income tax examinations for years before 2005. At December 31, 2019, we provided $ 1.6 million for deferred income taxes on $ 11.2 million of undistributed earnings of foreign subsidiaries that are not considered to be indefinitely reinvested. For certain other of the Company’s foreign subsidiaries, undistributed earnings of approximately $ 126.1 million are considered to be indefinitely reinvested, and we have not provided for deferred taxes on such earnings. We have not disclosed deferred income taxes on undistributed earnings of foreign subsidiaries where they are considered to be indefinitely reinvested, as it is not practicable to estimate the additional taxes that might be payable on the eventual remittance of such earnings, given the uncertain timing of when any such eventual remittance may occur, the significant number of foreign subsidiaries we have, the multiple layers within our legal entity structure, and the complexities of tax regulations across those foreign subsidiaries.

Contingent Liabilities

Contingent Liabilities	12 Months Ended
	Dec. 31, 2019
Contingent Liabilities [Abstract]
Contingent Liabilities	12. Contingent Liabilities The Company had bank guarantees and standby letters of credit issued by financial institutions that totaled $ 4.8 million at December 31, 2019 and $ 5.5 million at December 31, 2018. These agreements primarily relate to Ferro’s insurance programs, foreign energy purchase contracts and foreign tax payments. If the Company fails to perform its obligations, the guarantees and letters of credit may be drawn down by their holders, and we would be liable to the financial institutions for the amounts drawn. We have recorded environmental liabilities of $ 7.2 million at December 31, 2019 and $ 8.5 million at December 31, 2018, for costs associated with the remediation of certain of our current or former properties that have been contaminated. The balance at December 31, 2019 and December 31, 2018, were primarily comprised of liabilities related to a non-operating facility in Brazil, and for retained environmental obligations related to a site in the United States that was part of the sale of our North American and Asian metal powders product lines in 2013. These costs include, but are not limited to, legal and consulting fees, site studies, the design and implementation of remediation plans, post-remediation monitoring, and related activities. The ultimate liability could be affected by numerous uncertainties, including the extent of contamination found, the required period of monitoring, the ultimate cost of required remediation and other circumstances. In November 2017, Suffolk County Water Authority filed a complaint, Suffolk County Water Authority v. The Dow Chemical Company et al., against the Company and a number of other companies in the U.S. Federal Court for the Eastern District of New York with regard to the product 1,4 dioxane. The plaintiff alleges, among other things, that the Suffolk County water supply is contaminated with 1,4 dioxane and that the defendants are liable for unspecified costs of cleanup and remediation of the water supply, among other damages. The Company has not manufactured 1,4 dioxane since 2008, denies the allegations related to liability for the plaintiff’s claims, and is vigorously defending this proceeding. Since December 2018, additional complaints were filed in the same court by 25 other New York municipal water suppliers and in New York State Supreme Court by one water supplier against the Company and others making substantially similar allegations regarding the contamination of their respective water supplies with 1,4 dioxane. The Company is likewise vigorously defending these additional actions. The Company currently does not expect the outcome of these proceedings to have a material adverse impact on its consolidated financial condition, results of operations, or cash flows, net of any insurance coverage. However, it is not possible to predict the ultimate outcome of these proceedings due to the unpredictable nature of litigation. In 2013, the Supreme Court in Argentina ruled unfavorably related to certain export taxes associated with a divested operation. As a result of this ruling, we recorded a liability for $ 8.7 million at December 31, 2016. During 2017, the Company participated in a newly available tax regime, resulting in the reduction of interest on these outstanding tax liabilities of $ 4.5 million. The liability recorded at December 31, 2019 and 2018, is $ 0.6 million and $ 1.3 million, respectively. In addition to the proceedings described above, the Company and its consolidated subsidiaries are subject from time to time to various claims, lawsuits, investigations, and proceedings related to products, services, contracts, environmental, health and safety, employment, intellectual property, and other matters, including with respect to divested businesses. The outcome of such matters is unpredictable, our assessment of them may change, and resolution of them could have a material adverse effect on the Company’s consolidated financial position, results of operations, or cash flows. We do not currently expect the resolution of such matters to materially affect the consolidated financial position, results of operations, or cash flows of the Company.

Retirement Benefits

Retirement Benefits	12 Months Ended
	Dec. 31, 2019
Retirement Benefits [Abstract]
Retirement Benefits	13. Retirement Benefits Defined Benefit Pension Plans U.S. Pension Plans Non-U.S. Plans 2019 2018 2017 2019 2018 2017 (Dollars in thousands) Service cost $ 10 $ 11 $ 11 $ 1,410 $ 1,392 $ 1,410 Interest cost 11,787 11,308 14,594 2,264 2,166 2,089 Expected return on plan assets ( 12,622 ) ( 15,982 ) ( 20,111 ) ( 758 ) ( 755 ) ( 773 ) Amortization of prior service cost — — 7 7 6 8 Mark-to-market actuarial net losses (gains) 1,228 16,633 ( 5,432 ) 11,033 2,444 ( 1,792 ) Curtailment and settlement effects losses — — 2,581 292 156 28 Special termination benefits — — — — 106 27 Net periodic benefit cost (credit) $ 403 $ 11,970 $ ( 8,350 ) $ 14,248 $ 5,515 $ 997 Weighted-average assumptions: Discount rate 4.40 % 3.80 % 4.40 % 2.61 % 2.35 % 2.24 % Rate of compensation increase N/A N/A N/A 3.19 % 3.18 % 3.14 % Expected return on plan assets 7.70 % 7.70 % 8.20 % 2.74 % 2.55 % 2.54 % For the majority of our U.S. defined benefit pension plans, the participants stopped accruing benefit service costs after March 31, 2006, except for one plan with a single employee. In 2019, the mark-to-market actuarial net loss on the U.S. pension plans of $ 1.2 million consisted of a charge of $ 28.3 million to remeasure the liability based on a lower discount rate compared with the prior year, partially offset by a gain of $ 23.3 million from actual returns on plan assets exceeding expected returns and a $ 3.8 million gain on demographic experience and actuarial assumptions. The mark-to-market actuarial net loss of $ 11.0 million for non-U.S. plans was primarily driven by remeasurement of the respective liabilities at lower discount rates. In 2018, the mark-to-market actuarial net loss on the U.S. pension plans of $ 16.6 million was driven by a loss of $ 31.0 million from expected returns on plan assets being lower than actual returns, partially offset by a gain of $ 17.9 million from the change in the discount rate compared with the prior year. The mark-to-market actuarial net loss of $ 2.4 million for non-U.S. plans was primarily driven by expected returns on plan assets being lower than actual returns. In 2017, the mark-to-market actuarial net gain on the U.S. pension plans of $ 5.4 million was based on $ 20.8 million of gain from actual returns on plan assets exceeding expected returns on plan assets, partially offset by a loss on remeasurement of the liability from a lower discount rate compared with the prior year. The mark-to-market actuarial net gain of $ 1.8 million for non-U.S. plans was primarily driven by remeasurement of the respective liabilities at a higher discount rate. U.S. Pension Plans Non-U.S. Pension Plans 2019 2018 2019 2018 (Dollars in thousands) Change in benefit obligation Benefit obligation at beginning of year $ 279,885 $ 303,170 $ 106,098 $ 109,450 Service cost 10 11 1,410 1,392 Interest cost 11,787 11,308 2,264 2,166 Curtailments — — ( 45 ) — Amendments — — 23 — Settlements — ( 25 ) ( 734 ) ( 517 ) Special termination benefits — — — 106 Plan participants' contributions — — 14 21 Benefits paid ( 19,978 ) ( 20,165 ) ( 5,367 ) ( 2,658 ) Net transfer in — — — 140 Actuarial loss (gain) 24,477 ( 14,414 ) 14,949 816 Exchange rate effect — — ( 1,914 ) ( 4,818 ) Benefit obligation at end of year $ 296,181 $ 279,885 $ 116,698 $ 106,098 Accumulated benefit obligation at end of year $ 296,181 $ 279,885 $ 107,332 $ 97,406 Change in plan assets: Fair value of plan assets at beginning of year $ 204,425 $ 239,260 $ 32,979 $ 36,314 Actual return on plan assets 35,871 ( 15,065 ) 4,336 ( 1,029 ) Employer contributions 2,909 420 3,277 2,523 Plan participants' contributions — — 14 21 Benefits paid ( 19,978 ) ( 20,165 ) ( 5,367 ) ( 2,658 ) Effect of settlements — ( 25 ) ( 734 ) ( 517 ) Exchange rate effect — — ( 607 ) ( 1,675 ) Fair value of plan assets at end of year $ 223,227 $ 204,425 $ 33,898 $ 32,979 Amounts recognized in the balance sheet: Other non-current assets $ — $ — $ 44 $ — Accrued expenses and other current liabilities ( 410 ) ( 404 ) ( 2,589 ) ( 2,912 ) Postretirement and pension liabilities ( 72,544 ) ( 75,056 ) ( 80,255 ) ( 70,205 ) Funded status $ ( 72,954 ) $ ( 75,460 ) $ ( 82,800 ) ( 73,117 ) U.S. Pension Plans Non-U.S. Pension Plans 2019 2018 2019 2018 (Dollars in thousands) Weighted-average assumptions as of December 31: Discount rate 3.35 % 4.40 % 1.76 % 2.61 % Rate of compensation increase N/A N/A 3.11 % 3.19 % Pension plans with benefit obligations in excess of plan assets: Benefit obligations $ 296,181 $ 279,885 $ 84,791 $ 78,791 Plan assets 223,227 204,425 1,946 5,674 Pension plans with accumulated benefit obligations in excess of plan assets: Projected benefit obligations $ 296,181 $ 279,885 $ 84,338 $ 76,097 Accumulated benefit obligations 296,181 279,885 75,073 67,619 Plan assets 223,227 204,425 1,553 3,100 Activity and balances in Accumulated other comprehensive loss related to defined benefit pension plans are summarized below: U.S. Pension Plans Non-U.S. Pension Plans 2019 2018 2019 2018 (Dollars in thousands) Prior service (cost): Balance at beginning of year $ — $ — $ ( 22 ) $ 2 Amounts recognized as net periodic benefit costs — — ( 7 ) ( 6 ) Plan amendments — — ( 14 ) — Exchange rate effects — — ( 1 ) ( 18 ) Balance at end of year $ — $ — $ ( 44 ) $ ( 22 ) Estimated amounts to be amortized in 2020 $ — $ ( 8 ) The overall investment objective for our defined benefit pension plan assets is to achieve the highest level of investment return that is compatible with prudent investment practices, asset class risk and current and future benefit obligations of the plans. Based on the potential risks and expected returns of various asset classes, the Company establishes asset allocation ranges for major asset classes. For U.S. plans, the target allocations are 35 % fixed income, 60 % equity, and 5 % other investments. For non-U.S. plans, the target allocations are 75 % fixed income, 24 % equity, and 1 % other investments. The Company invests in funds and with asset managers that track broad investment indices. The equity funds generally capture the returns of the equity markets in the U.S., Europe, and Asia Pacific and also reflect various investment styles, such as growth, value, and large or small capitalization. The fixed income funds generally capture the returns of government and investment-grade corporate fixed income securities in the U.S. and Europe and also reflect various durations of these securities. We derive our assumption for expected return on plan assets at the beginning of the year based on the weighted-average expected return for the target asset allocations of the major asset classes held by each plan. In determining the expected return, the Company considers both historical performance and an estimate of future long-term rates of return. The Company consults with, and considers the opinion of, its actuaries in developing appropriate return assumptions. The fair values of our pension plan assets at December 31, 2019, by asset category are as follows: Level 1 Level 2 Level 3 Total (Dollars in thousands) U.S. plans: Fixed income: Guaranteed deposits $ — 1,863 — 1,863 Mutual funds 73,563 — — 73,563 Commingled funds — 434 244 678 Equities: U.S. common stocks 4,198 — — 4,198 Mutual funds 128,546 — — 128,546 Commingled funds — 706 — 706 Total assets in the fair value hierarchy $ 206,307 $ 3,003 $ 244 $ 209,554 Investments measured at net asset value — — — 13,673 Investments at fair value $ 206,307 $ 3,003 $ 244 $ 223,227 Non-U.S. plans Fixed income: Cash and cash equivalents $ 10 $ — $ — $ 10 Guaranteed deposits — 748 30,155 30,903 Mutual funds 2,352 — — 2,352 Other 89 — — 89 Equities: Mutual funds 544 — — 544 Other assets — — — — Total $ 2,995 $ 748 $ 30,155 $ 33,898 The fair values of our pension plan assets at December 31, 2018, by asset category are as follows: Level 1 Level 2 Level 3 Total (Dollars in thousands) U.S. plans: Fixed income: Guaranteed deposits $ — 1,723 — 1,723 Mutual funds 74,310 — — 74,310 Commingled funds — 502 226 728 Equities: U.S. common stocks 4,439 — — 4,439 Mutual funds 109,756 — — 109,756 Commingled funds — 695 — 695 Total assets in the fair value hierarchy $ 188,505 $ 2,920 $ 226 $ 191,651 Investments measured at net asset value — — — 12,774 Investments at fair value $ 188,505 $ 2,920 $ 226 $ 204,425 Non-U.S. plans Fixed income: Cash and cash equivalents $ — $ 89 $ — $ 89 Guaranteed deposits 32 744 27,318 28,094 Mutual funds 1,070 — — 1,070 Other 1,068 2,126 — 3,194 Equities: Mutual funds 451 — — 451 Other assets 81 — — 81 Total $ 2,702 $ 2,959 $ 27,318 $ 32,979 The Company’s U.S. pension plans held 0.3 million shares of the Company’s common stock with a market value of $ 4.2 million at December 31, 2019 and 0.3 million shares with a market value of $ 4.4 million at December 31, 2018. Level 3 assets consist primarily of guaranteed deposits. The guaranteed deposits in Level 3 are in the form of contracts with insurance companies that secure the payment of benefits and are valued based on discounted cash flow models using the same discount rate used to value the related plan liabilities. The investments measured at net investment value, which is a practical expedient to estimating fair value, seek both current income and long term capital appreciation through investing in underlying funds that acquire, manage, and dispose of commercial real estate properties. A rollforward of Level 3 assets is presented below. Unrealized gains included in earnings were $ 3.9 million in 2019 and unrealized loss included in earnings were $ 1.0 million in 2018. Guaranteed Commingled deposits funds Total (Dollars in thousands) Balance at December 31, 2017 $ 30,127 $ 269 $ 30,396 Sales ( 487 ) — ( 487 ) Gains (losses) included in earnings ( 960 ) ( 43 ) ( 1,003 ) Exchange rate effect ( 1,362 ) — ( 1,362 ) Balance at December 31, 2018 $ 27,318 $ 226 $ 27,544 Sales ( 473 ) — ( 473 ) Gains (losses) included in earnings 3,885 18 3,903 Exchange rate effect ( 575 ) — ( 575 ) Balance at December 31, 2019 30,155 244 $ 30,399 We expect to contribute approximately $ 9.7 million to our U.S. pension plans and $ 3.5 million to our non-U.S. pension plans in 2020. We estimate that future pension benefit payments, will be as follows: U.S. Plans Non-U.S. Plans (Dollars in thousands) 2020 $ 20,340 $ 3,487 2021 20,580 3,275 2022 20,952 3,655 2023 20,450 4,017 2024 20,336 3,371 2025-2029 96,857 22,516 Postretirement Health Care and Life Insurance Benefit Plans 2019 2018 2017 (Dollars in thousands) Net periodic benefit cost: Interest expense $ 702 $ 732 $ 843 Service cost 2 — — Mark-to-market actuarial net loss (gain) 1,080 ( 2,580 ) 458 Total net periodic benefit cost (credit) $ 1,784 $ ( 1,848 ) $ 1,301 Weighted-average assumptions: Discount rate 4.30 % 3.70 % 4.20 % Current trend rate for health care costs 6.30 % 6.40 % 6.50 % Ultimate trend rate for health care costs 4.50 % 4.50 % 4.50 % Year that ultimate trend rate is reached 2036 2036 2036 A one-percentage-point change in the assumed health care cost trend rates would have the following effect: 1-Percentage- 1-Percentage- Point Point Increase Decrease (Dollars in thousands) Effect on total of service and interest costs components $ 38 $ ( 34 ) Effect on postretirement benefit obligation 877 ( 773 ) 2019 2018 (Dollars in thousands) Change in benefit obligation: Benefit obligation at beginning of year $ 17,198 $ 20,725 Service cost 2 — Interest cost 702 732 Benefits paid ( 1,833 ) ( 1,679 ) Actuarial loss (gain) 1,080 ( 2,580 ) Benefit obligation at end of year $ 17,149 $ 17,198 Change in plan assets: Fair value of plan assets at beginning of year $ — $ — Employer contributions 1,836 1,679 Benefits paid ( 1,836 ) ( 1,679 ) Fair value of plan assets at end of year $ — $ — Amounts recognized in the balance sheet: Accrued expenses and other current liabilities $ ( 1,945 ) $ ( 1,966 ) Postretirement and pension liabilities ( 15,204 ) ( 15,232 ) Funded status $ ( 17,149 ) $ ( 17,198 ) Weighted-average assumptions as of December 31: Discount rate 3.25 % 4.30 % Current trend rate for health care costs 6.10 % 6.30 % Ultimate trend rate for health care costs 4.50 % 4.50 % Year that ultimate trend rate is reached 2036 2036 The Medicare Prescription Drug, Improvement, and Modernization Act of 2003 provides subsidies for certain drug costs to companies that provide coverage that is actuarially equivalent to the drug coverage under Medicare Part D. We estimate that future postretirement health care and life insurance benefit payments will be as follows: Before Medicare After Medicare Subsidy Subsidy (Dollars in thousands) 2020 $ 1,945 $ 1,737 2021 1,846 1,651 2022 1,741 1,559 2023 1,635 1,466 2024 1,537 1,382 2025-2029 6,181 5,589 Other Retirement Plans We also have defined contribution retirement plans covering certain employees. Our contributions are determined by the terms of the plans and are limited to amounts that are deductible for income taxes. Generally, benefits under these plans vest over a period of five year s from date of employment. The largest plan covers salaried and most hourly employees in the U.S. In this plan, the Company contributes a percentage of eligible employee basic compensation and also a percentage of employee contributions. The expense applicable to these plans was $ 3.7 million, $ 2.9 million, and $ 5.7 million in 2019, 2018, and 2017, respectively.

Stock-Based Compensation

Stock-Based Compensation	12 Months Ended
	Dec. 31, 2019
Stock-Based Compensation [Abstract]
Stock-Based Compensation	14. Stock-based Compensation On May 3, 2018, our shareholders approved the 2018 Omnibus Incentive Plan (the “Plan”), which was adopted by the Board of Directors on February 22, 2018. The Plan’s purpose is to promote the Company’s long-term financial interests and growth by attracting, retaining and motivating high-quality key employees and directors, motivating such employees and directors to achieve the Company’s short- and long-range performance goals and objectives, and thereby align their interests with those of the Company’s shareholders. The Plan reserves 4,500,000 shares of common stock to be issued for grants of several different types of long-term incentives including stock options, stock appreciation rights, restricted awards, performance awards, other common stock-based awards, and dividend equivalent rights. The 2013 Omnibus Incentive Plan (the “Previous Plan”), was replaced by the Plan, and no future grants may be made under the Previous Plan. However, any outstanding awards or grants made under the Previous Plan will continue until the end of their specified terms. Stock options, performance share units, deferred stock units and restricted stock units were the only grant types outstanding at December 31, 2019. Stock options, performance share units, and restricted stock units are discussed below. Activities in other grant types were not significant. Stock Options General Information Stock options outstanding at December 31, 2019, have a term of 10 years, vest evenly over three year s on the anniversary of the grant date, and have an exercise price equal to the per share fair market value of our common stock on the grant date. Accelerated vesting is used for options held by employees who meet both the age and years of service requirements to retire prior to the end of the vesting period. In the case of death or retirement, the stock options become 100 % vested and exercisable. Stock Option Valuation Model and Method Information We estimate the fair value of each stock option on the date of grant using the Black-Scholes option pricing model. We use judgment in selecting assumptions for the model, which may significantly impact the timing and amount of compensation expense, and we base our judgments primarily on historical data. When appropriate, we adjust the historical data for circumstances that are not likely to occur in the future. The following table details the determination of the assumptions used to estimate the fair value of stock options: Assumption Estimation Method Expected life, in years Historical stock option exercise experience Risk-free interest rate Yield of U.S. Treasury Bonds with remaining maturity equal to expected life of the stock option Expected volatility Historical daily price observations of the Company’s common stock over a period equal to the expected life of the stock option Expected dividend yield Historical dividend rate at the date of grant The following table details the weighted-average grant-date fair values and the assumptions used for estimating the fair values of stock options granted in the respective years: 2019 2018 2017 Weighted-average grant-date fair value $ 6.47 $ 8.91 $ 7.29 Expected life, in years 5.6 5.4 6.0 Risk-free interest rate 2.5 % 2.7 % 1.9 % - 2.3 % Expected volatility 33.9 % 39.7 % 48.0 % - 51.5 % Expected dividend yield — % — % — % Stock Option Activity Information A summary of stock option activity follows: Weighted- Average Weighted- Remaining Aggregate Number of Average Contractual Intrinsic Options Exercise Price Term Value Outstanding at December 31, 2018 1,578,389 $ 11.32 Granted 279,000 17.89 Exercised ( 116,790 ) 9.00 Forfeited or expired ( 11,600 ) 18.27 Outstanding at December 31, 2019 1,728,999 $ 12.49 5.4 $ 5,960 Exercisable at December 31, 2019 1,296,030 $ 14.57 4.3 $ 5,923 Vested or expected to vest at December 31, 2019 1,728,999 $ 12.49 5.4 $ 5,960 We calculated the aggregate intrinsic value in the table above by taking the total pretax difference between our common stock’s closing market value per share on the last trading day of the year and the stock option exercise price for each grant and multiplying that result by the number of shares that would have been received by the option holders had they exercised all their in-the-money stock options. Information related to stock options exercised follows: 2019 2018 2017 (Dollars in thousands) Proceeds from the exercise of stock options $ 1,052 $ 727 $ 4,283 Intrinsic value of stock options exercised 750 1,590 2,780 Income tax benefit related to stock options exercised 158 334 980 Stock Options Expense Information A summary of amounts recorded and to be recorded for stock-based compensation related to stock options follows: 2019 2018 2017 (Dollars in thousands) Compensation expense recorded in Selling, general and administrative expenses $ 1,801 $ 1,528 $ 1,560 Deferred income tax benefits related to compensation expense 378 321 328 Total fair value of stock options vested 1,387 1,390 1,370 Unrecognized compensation cost 1,469 606 587 Expected weighted-average recognition period for unrecognized compensation, in years 2.2 2.7 2.0 Performance Share Units General Information Performance share units, expressed as shares of the Company’s common stock, are earned only if the Company meets specific performance targets over a three year period. The grants have a vesting period of three year s. The Plan allows for payout of up to 200 % of the vesting-date fair value of the awards. We pay half of the earned value in cash and half in unrestricted shares of common stock. The portion of the grants that will be paid in cash are treated as liability awards, and therefore, we remeasure our liability and the related compensation expense at each balance sheet date, based on fair value. We treat the portion of the grants that will be settled with common stock as equity awards, and therefore, the amount of stock-based compensation we record over the performance period is based on the fair value on the grant date. The compensation expense and number of shares expected to vest for all performance share units are adjusted each reporting period for the achievement of the performance share units’ performance metrics, based upon our best estimate using available information. Performance Share Unit Valuation Model and Method Information The estimated fair value of performance share units granted in 2019, 2018 and 2017 is based on the closing price of the Company’s common stock on the date of issuance and recorded based on achievement of target performance metrics. As of December 31, 2019, we had 0.2 million and 0.1 million performance share units outstanding associated with our 2019 and 2018 grants, respectively. The weighted average grant date fair value of our performance share units was $ 17.61 for shares granted in 2019, $ 22.92 for shares granted in 2018 and $ 14.89 for shares granted in 2017. All performance share units are initially expensed at target and are evaluated each reporting period for likelihood of achieving the performance metrics, and the expense is adjusted, as appropriate. Performance Share Unit Activity Information A summary of performance share unit activity follows: Weighted- Average Remaining Number of Contractual Units Term Outstanding at December 31, 2018 526,300 Granted 344,224 Earned ( 406,300 ) Forfeited or expired ( 12,224 ) Outstanding at December 31, 2019 452,000 1.0 Vested or expected to vest at December 31, 2019 452,000 1.0 Performance Share Unit Expense Information A summary of amounts recorded and to be recorded for stock-based compensation related to performance share units follows: 2019 2018 2017 (Dollars in thousands) Compensation expense recorded in Selling, general and administrative expenses $ 3,607 $ 4,152 $ 6,772 Deferred income tax benefits related to compensation expense 757 872 1,422 Unrecognized compensation cost 2,730 3,599 3,726 Expected weighted-average recognition period for unrecognized compensation, in years 1.6 1.4 1.4 Restricted Stock Units We granted 0.2 million, 0.1 million and 0.2 million restricted stock units in 2019, 2018, and 2017, respectively. Fair value of restricted stock units is determined based on the closing price of the Company’s common stock on the date of issuance. Restricted stock units are expressed as equivalent shares of the Company’s common stock, and have a three year vesting period. Total expense included in Selling, general and administrative expense related to restricted stock units granted in 2019, 2018 and 2017 was $ 1.7 million, $ 2.2 million and $ 1.5 million, respectively. Total unrecognized compensation cost in 2019, 2018 and 2017 was $ 2.8 million, $ 2.8 million and $ 2.4 million, respectively. Directors’ Deferred Compensation Separate from the Plan, the Company has established the Ferro Corporation Deferred Compensation Plan for Non-employee Directors, permitting its non-employee directors to voluntarily defer all or a portion of their compensation. The voluntarily deferred amounts are placed in individual accounts in a benefit trust known as a “rabbi trust” and invested in the Company’s common stock with dividends reinvested in additional shares. All disbursements from the trust are made in the Company’s common stock. The stock held in the rabbi trust is classified as treasury stock in shareholders’ equity and the deferred compensation obligation that is required to be settled in shares of the Company’s common stock, is classified as paid-in capital. The rabbi trust held 0.1 million shares, valued at $ 1.6 million, at December 31, 2019, and 0.1 million shares, valued at $ 1.2 million, at December 31, 2018.

Restructuring And Cost Reductio

Restructuring And Cost Reduction Programs	12 Months Ended
	Dec. 31, 2019
Restructuring And Cost Reduction Programs [Abstract]
Restructuring And Cost Reduction Programs	15. Restructuring and Cost Reduction Programs Our restructuring and cost reduction programs have been developed with the objective of realigning the business and lowering our cost structure. Total restructuring charges resulting from these activities were $ 11.0 million in 2019, $ 7.1 million in 2018, and $ 7.0 million in 2017, which are reported in Restructuring and impairment charges in our consolidated statement of operations. As discussed in Note 4, our Tile Coatings business was classified as held-for-sale. As such, the restructuring costs pertaining to the Tile Coatings business of $ 1.9 million in 2019, $ 6.2 million in 2018, and $ 2.8 million in 2017 are reported in Income (loss) from discontinued operations, net of taxes. 2019 Restructuring Plan In the second quarter of 2019, we developed and initiated a program across the organization with the objective of realigning the business and lowering our cost structure. The program involves our global operations and certain functions and initiatives to increase operational efficiencies, some of which is associated with integration of our recent acquisitions. As a result of the actions, the Company expects to incur total charges of approximately $ 7.6 million, substantially all of which will be for severance costs. Global Cost Reduction Program In 2013, we initiated a Global Cost Reduction Program that was designed to address three key areas of the company: (1) business realignment, (2) operational efficiency and (3) corporate and back office functions. Business realignment was targeted at right-sizing our commercial management organizations globally. The operational efficiency component of the program was designed to improve the efficiency of our plant operations and supply chain. The corporate and back office initiative is principally comprised of work that we are doing with our strategic partners in the areas of finance and accounting and information technology outsourcing. In 2019, the restructuring charges primarily relate to costs associated with integration of our recent acquisitions and optimization programs. The charges associated with these restructuring programs are summarized by major type below: Employee Severance Other Costs Total (Dollars in thousands) Expected restructuring charges: Global Optimization Program $ 7,500 76 $ 7,576 Total expected restructuring charges $ 7,500 $ 76 $ 7,576 Restructuring charges incurred: Global Optimization Program $ 3,701 3,256 $ 6,957 Charges incurred in 2017 $ 3,701 $ 3,256 $ 6,957 Global Optimization Program 3,560 3,556 7,116 Charges incurred in 2018 $ 3,560 $ 3,556 $ 7,116 Global Optimization Program 7,163 3,792 10,955 Charges incurred in 2019 $ 7,163 $ 3,792 $ 10,955 Cumulative restructuring charges incurred: Global Optimization Program 44,251 33,062 77,313 Cumulative restructuring charges incurred as of December 31, 2019 $ 44,251 $ 33,062 $ 77,313 The charges associated with the restructuring programs are summarized by segments below: Total Cumulative Expected Charges To Charges 2019 2018 2017 Date (Dollars in thousands) Performance Colors and Glass $ 169 $ ( 5 ) $ 23 $ 3,744 $ 26,927 Color Solutions 100 124 148 1,250 4,461 Segment Total 269 119 171 4,994 31,388 Corporate Restructuring Charges 7,307 10,836 6,945 1,963 45,925 Total Restructuring Charges $ 7,576 $ 10,955 $ 7,116 $ 6,957 $ 77,313 The activities and accruals related to our global optimization programs are below: Employee Severance Other Costs Total (Dollars in thousands) Balance at December 31, 2016 $ 209 $ 1,489 $ 1,698 Restructuring charges $ 3,701 $ 3,256 6,957 Cash payments ( 2,797 ) ( 500 ) ( 3,297 ) Non-cash items 196 ( 3,255 ) ( 3,059 ) Balance at December 31, 2017 $ 1,309 $ 990 $ 2,299 Restructuring charges $ 3,560 $ 3,556 $ 7,116 Cash payments ( 3,678 ) ( 597 ) ( 4,275 ) Non-cash items ( 180 ) ( 3,117 ) ( 3,297 ) Balance at December 31, 2018 $ 1,011 $ 832 $ 1,843 Restructuring charges 7,163 3,792 $ 10,955 Cash payments ( 6,987 ) ( 1,831 ) ( 8,818 ) Non-cash items ( 440 ) ( 1,301 ) ( 1,741 ) Balance at December 31, 2019 $ 747 $ 1,492 $ 2,239 We expect to make cash payments to settle the remaining liability for employee severance benefits and other costs over the next twelve month s, except where legal or contractual obligations would require it to extend beyond that period.

Leases

Leases	12 Months Ended
	Dec. 31, 2019
Leases [Abstract]
Leases	16. Leases The Company determines if a contract is a lease at inception. The Company has leases for equipment, office space, plant sites and distribution centers. Certain of these leases include options to extend the lease and some include options to terminate the lease early. Leases with an initial term of 12 months or less are not recorded on the balance sheet and the related lease expense is recognized on a straight-line basis over the lease term. The right-of-use asset represents the right to use an underlying asset for the lease term and the lease liabilities represent the Company’s obligation to make lease payments arising from the lease. Right-of-use assets and lease liabilities are recognized as of the commencement date based on the present value of the lease payments over the lease term. The lease term may include options to extend or terminate the lease when it is reasonably certain that the Company will exercise the applicable option. The Company’s lease payments consist of both fixed and variable lease payments. Residual value guarantees are not common within the Company’s lease agreements nor are restrictions or covenants imposed by leases. The Company has elected the practical expedient to combine lease and non-lease components. The Company determined the discount rate to be used in measuring lease liabilities at a portfolio level using a collateralized rate. Specifically, we segregated our lease portfolio into different populations based on (1) lease currency, (2) lease term, and (3) creditworthiness of the lessee and security structure. There are no leases that have not yet commenced that create significant rights and obligations for the Company. The components of lease cost are shown below: 2019 Income Statement Location (Dollars in thousands) Lease Cost Operating lease cost (1) $ 5,318 Selling, general and administrative expenses Operating lease cost (2) 9,090 Cost of sales Finance lease cost Amortization of right-of-use assets 233 Cost of sales Interest of lease liabilities 17 Interest expense Net lease cost $ 14,658 (1) Included in operating lease cost is $ 0.9 million of short-term lease costs and $ 0.4 million of variable lease costs for the year ended December 31, 2019. (2) Included in operating lease cost is $ 2.6 million of short-term lease costs and $ 1.1 million of variable lease costs for the year ended December 31, 2019. Rent expense, as previously defined under ASC 840, for all operating leases was $ 12.7 million in 2018 and $ 10.3 million in 2017. Supplemental balance sheet information related to leases are shown below: 2019 Balance Sheet Location (Dollars in thousands) Assets Operating leased assets $ 21,684 Operating leased assets Finance leased assets (1) 859 Property, plant and equipment, net Total leased assets $ 22,543 Liabilities Current Operating $ 7,259 Accrued expenses and other current liabilities Finance 438 Loans payable and current portion of long-term debt Noncurrent Operating 15,326 Operating lease non-current liabilities Finance 1,867 Long-term debt, less current portion Total lease liabilities $ 24,890 (1) Finance leases are net of accumulated depreciation of $ 3.4 million for December 31, 2019. Supplemental balance sheet information related to capital lease arrangements as previously defined under ASC 840 are shown below: 2019 (Dollars in thousands) Gross amounts capitalized Buildings $ 3,100 Equipment 1,129 4,229 Accumulated amortization Buildings ( 3,100 ) Equipment ( 270 ) ( 3,370 ) Net assets under capital leases $ 859 Supplemental cash flow information related to leases are shown below: 2019 (Dollars in thousands) Cash paid for amounts included in the measurement of lease liabilities Operating cash flows from finance leases $ 17 Operating cash flows from operating leases 9,757 Financing cash flows from finance leases 229 Leased assets obtained in exchange for new finance lease liabilities 755 Leased assets obtained in exchange for new operating lease liabilities 30,411 2019 Weighted-average remaining lease term (years) Operating leases 4.3 Finance leases 6.2 Weighted-average discount rate Operating leases 4.2 % Finance leases 5.3 % Maturities of lease liabilities are shown below as of December 31, 2019: Finance Operating Leases Leases (Dollars in thousands) 2020 $ 531 $ 8,201 2021 478 6,010 2022 469 3,824 2023 442 2,089 2024 348 1,515 Thereafter 697 2,537 Net minimum lease payments $ 2,965 $ 24,176 Less: interest 660 1,591 Present value of lease liabilities $ 2,305 $ 22,585 Maturities of lease liabilities under ASC 840 are shown below as of December 31, 2018: Capital Leases Operating Leases (Dollars in thousands) 2019 $ 399 $ 9,643 2020 331 6,375 2021 279 4,650 2022 279 2,889 2023 279 1,781 Thereafter 976 2,368 Net minimum lease payments $ 2,543 $ 27,706 Less amount representing imputed interest and executory costs 712 Present value of net minimum lease payments 1,831 Less current portion 253 Long-term obligations at December 31, 2018 $ 1,578

Miscellaneous Expense (Income),

Miscellaneous Expense (Income), Net	12 Months Ended
	Dec. 31, 2019
Miscellaneous Expense (Income), Net [Abstract]
Miscellaneous Expense (Income), Net	17. Miscellaneous Expense (Income), Net Components of Miscellaneous expense (income), net follow: 2019 2018 2017 (Dollars in thousands) Pension expense (income) $ 14,845 $ 14,142 $ ( 7,474 ) Argentina export tax matter 217 507 ( 3,549 ) Gain on change of control — ( 2,586 ) ( 127 ) Modification of debt — 1,046 — Dividends/royalty from affiliates, net ( 529 ) ( 720 ) ( 993 ) Loss (gain) on sale of assets ( 1,412 ) ( 514 ) 747 Contingent consideration payment (adjustment) ( 2,723 ) ( 1,637 ) 1,721 Bank fees 1,798 1,656 1,646 Other, net ( 474 ) 180 596 Total Miscellaneous expense (income), net $ 11,722 $ 12,074 $ ( 7,433 ) In 2018, we adopted ASU 2017-07, which requires all other components of net benefit costs (credit) besides service cost to be presented outside a subtotal of income from operations. As such, we recorded pension expense of $ 14.8 million in 2019 and $ 14.1 million in 2018 and income of $ 7.5 million in 2017 related to these costs. In 2018, the Company acquired 66 % of the equity interests of FMU (Note 5), bringing our total ownership to 100 %. Due to the change of control that occurred, the Company recorded a gain on purchase of $ 2.6 million, related to the difference between the Company’s carrying value and fair value of the previously held equity method investment. In 2017, the Company acquired a majority equity interest in Gardenia (Note 5), and due to the change of control that occurred, the Company recorded a gain on purchase of $ 2.6 million related to the difference between the Company’s carrying value and fair value of the previously held equity method investment. Substantially all of the operating results, net of income tax, of Gardenia were classified as discontinued operations in the accompanying consolidated statements of operations in conjunction with the sale of the Tile Coatings business discussed in Note 4. In 2013, the Supreme Court in Argentina ruled unfavorably related to certain export taxes associated with a divested operation. In 2017, the Company participated in a newly available tax regime, resulting in the reduction of these outstanding tax labilities, and as a result recorded a gain of $ 4.5 million for the year ended December 31, 2017. We recorded a $ 0.2 million charge in 2019, $ 0.5 million charge in 2018 and $ 0.9 million charge in 2017 related to interest on the liabilities.

Earnings Per Share

Earnings Per Share	12 Months Ended
	Dec. 31, 2019
Earnings Per Share [Abstract]
Earnings Per Share	18. Earnings per Share Details of the calculations of basic and diluted earnings per share follow: 2019 2018 2017 (Dollars in thousands, except per share amounts) Basic earnings per share computation: Income from continuing operations $ 35,392 $ 56,920 $ 36,902 Less: Net income attributable to noncontrolling interests from continuing operations 1,087 851 704 Net income attributable to Ferro Corporation from continuing operations 34,305 56,069 36,198 Income (loss) from discontinued operations, net of income taxes ( 27,977 ) 24,026 20,866 Less: Net income attributable to noncontrolling interests from discontinued operations 290 2 10 Net income attributable to Ferro Corporation from discontinued operations ( 28,267 ) 24,024 20,856 Total $ 6,038 $ 80,093 $ 57,054 Weighted-average common shares outstanding 82,083 83,940 83,713 Basic earnings per share from continuing operations attributable to Ferro Corporation common shareholders $ 0.41 $ 0.67 $ 0.43 Diluted earnings per share computation: Net income attributable to Ferro Corporation common shareholders $ 34,305 $ 56,069 $ 36,198 Adjustment for income from discontinued operations ( 28,267 ) 24,024 20,856 Total $ 6,038 $ 80,093 $ 57,054 Weighted-average common shares outstanding 82,083 83,940 83,713 Assumed exercise of stock options 407 772 762 Assumed satisfaction of restricted stock unit conditions 369 301 351 Assumed satisfaction of performance stock unit conditions 32 72 330 Weighted-average diluted shares outstanding 82,891 85,085 85,156 Diluted earnings per share from continuing operations attributable to Ferro Corporation common shareholders $ 0.41 $ 0.66 $ 0.43 The number of anti-dilutive shares were 2.1 million, 1.7 million, and 1.6 million for 2019, 2018, and 2017, respectively. These shares were excluded from the calculation of diluted earnings per share due to their anti-dilutive impact.

Share Repurchase Program

Share Repurchase Program	12 Months Ended
	Dec. 31, 2019
Share Repurchase Program [Abstract]
Share Repurchase Program	19. Share Repurchase Program In October 2018, the Company’s Board of Directors approved a new share repurchase program under which the Company is authorized to repurchase up to an additional $ 50 million of the Company’s outstanding common stock on the open market, including through Rule 10b5-1 plans, in privately negotiated transactions, or otherwise. This new program is in addition to the $ 100 million of authorization previously approved and announced. The timing and amount of shares to be repurchased will be determined by the Company, based on evaluation of market and business conditions, share price, and other factors. The share repurchase programs do not obligate the Company to repurchase any dollar amount or number of common shares, and may be suspended or discontinued at any time. The Company repurchased 1,440,678 shares of common stock at an average price of $ 17.35 per share for a total cost of $ 25.0 million during 2019. The Company repurchased 1,470,791 shares of common stock at an average price of $ 19.59 per share for a total cost of $ 28.8 million during 2018. The Company made no repurchases during 2017. As of December 31, 2019, $ 46.2 million of common stock could still be repurchased under the programs.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Loss	12 Months Ended
	Dec. 31, 2019
Accumulated Other Comprehensive Loss [Abstract]
Accumulated Other Comprehensive Loss	20. Accumulated Other Comprehensive Loss Changes in Accumulated other comprehensive loss by component, net of income tax, were as follows: Postretirement Foreign Net Gain (Loss) Benefit Liability Currency on Cash Flow Adjustments Items Hedges Total (Dollars in thousands) Balance at December 31, 2016 $ 1,141 $ ( 107,784 ) $ — $ ( 106,643 ) Other comprehensive income (loss) before reclassifications, before tax — 26,181 2,019 28,200 Reclassification to earnings: Cash flow hedge loss, before tax — — ( 527 ) ( 527 ) Postretirement benefit liabilities gain (loss), before tax 42 — — 42 Current period other comprehensive income (loss), before tax 42 26,181 1,492 27,715 Tax effect 18 ( 4,025 ) 547 ( 3,460 ) Current period other comprehensive income (loss), net of tax 24 30,206 945 31,175 Balance at December 31, 2017 $ 1,165 $ ( 77,578 ) $ 945 $ ( 75,468 ) Other comprehensive income (loss) before reclassifications, before tax — ( 24,658 ) 11,388 ( 13,270 ) Reclassification to earnings: Cash flow hedge loss, before tax — — ( 17,159 ) ( 17,159 ) Postretirement benefit liabilities gain (loss), before tax ( 55 ) — — ( 55 ) Current period other comprehensive income (loss), before tax ( 55 ) ( 24,658 ) ( 5,771 ) ( 30,484 ) Tax effect ( 16 ) 954 ( 1,529 ) ( 591 ) Current period other comprehensive income (loss), net of tax ( 39 ) ( 25,612 ) ( 4,242 ) ( 29,893 ) Balance at December 31, 2018 $ 1,126 $ ( 103,190 ) $ ( 3,297 ) $ ( 105,361 ) Other comprehensive (loss) income before reclassifications, before tax — 6,269 ( 2,731 ) 3,538 Reclassification to earnings: Cash flow hedge loss, before tax — — ( 10,162 ) ( 10,162 ) Postretirement benefit liabilities gain (loss), before tax 91 — — 91 Current period other comprehensive income (loss), before tax 91 6,269 ( 12,893 ) ( 6,533 ) Tax effect 11 654 ( 3,183 ) ( 2,518 ) Current period other comprehensive income (loss), net of tax 80 5,615 ( 9,710 ) ( 4,015 ) Balance at December 31, 2019 $ 1,206 $ ( 97,575 ) $ ( 13,007 ) $ ( 109,376 )

Reporting For Segments

Reporting For Segments	12 Months Ended
	Dec. 31, 2019
Reporting For Segments [Abstract]
Reporting For Segments	21. Reporting for Segments As discussed in Note 4, during the fourth quarter of 2019, we entered into a definitive agreement to sell our Tile Coatings business which has historically been the majority of our Performance Coatings reportable segment. Substantially all of the assets and liabilities of our Tile Coatings business were classified as held-for-sale in the accompanying consolidated balance sheets and results are included within discontinued operation in the consolidated statement of operations for all years presented. The retained assets, liabilities and operations of the Performance Coatings reportable segment are reflected within our Performance Colors and Glass reportable segment. The Company’s reportable segments are Performance Colors and Glass and Color Solutions. Net sales to external customers by segment are presented in the table below. Sales between segments were not material. 2019 2018 2017 (Dollars in thousands) Performance Colors and Glass $ 648,692 $ 691,196 $ 638,322 Color Solutions 369,674 391,027 358,060 Total net sales $ 1,018,366 $ 1,082,223 $ 996,382 Segment gross profit is the metric utilized by management to evaluate segment performance. We measure segment gross profit for internal reporting purposes by excluding certain other cost of sales not directly attributable to business units. Assets by segment are not regularly reviewed by the chief operating decision maker. Each segment’s gross profit and reconciliations to Income before income taxes are presented in the table below: 2019 2018 2017 (Dollars in thousands) Performance Colors and Glass $ 193,508 $ 212,364 $ 209,147 Color Solutions 114,939 124,852 113,694 Other cost of sales 369 2,519 3,878 Total gross profit 308,816 339,735 326,719 Selling, general and administrative expenses 212,485 219,947 217,290 Restructuring and impairment charges 10,955 7,116 8,523 Other expense, net 41,865 41,622 17,591 Income before income taxes $ 43,511 $ 71,050 $ 83,315 Each segment’s capital expenditures for long-lived assets are detailed below: 2019 2018 2017 (Dollars in thousands) Performance Colors and Glass $ 46,304 $ 49,964 $ 29,108 Color Solutions 16,597 24,940 20,356 Total segment expenditures for long-lived assets 62,901 74,904 49,464 Unallocated corporate expenditures for long-lived assets 2,069 5,715 1,088 Total expenditures for long lived assets (1) $ 64,970 $ 80,619 $ 50,552 (1) Includes capital expenditures for discontinued operation of $ 10.1 million, $ 5.3 million and $ 4.7 million in 2019, 2018 and 2017, respectively, integrated within Performance Colors and Glass. We sell our products throughout the world and we attribute sales to countries based on the country where we generate the customer invoice. No single country other than the U.S . and Gemany rep resent greater than 10% of our net sales. Net sales by geography are as follows: 2019 2018 2017 (Dollars in thousands) United States $ 359,267 $ 379,912 $ 356,483 Germany 149,270 148,706 122,808 Other international 509,829 553,605 517,091 Total net sales $ 1,018,366 $ 1,082,223 $ 996,382 None of our operations in countries other than the U.S., Mexico, Germany and Columbia ow ns greater than 10% of consolidated long-lived assets. Long-lived assets that consist of property, plant, and equipment by geography at December 31, 2019 and 2018 are as follows: 2019 2018 (Dollars in thousands) United States $ 71,617 $ 56,263 Mexico 51,224 32,941 Germany 34,996 35,744 Columbia 32,475 32,587 Other international 109,693 118,004 Total long-lived assets $ 300,005 $ 275,539

Unconsolidated Affiliates Accou

Unconsolidated Affiliates Accounted For Under the Equity Method	12 Months Ended
	Dec. 31, 2019
Unconsolidated Affiliates Accounted For Under the Equity Method [Abstract]
Unconsolidated Affiliates Accounted For Under the Equity Method	22. Unconsolidated Affiliates Accounted For Under the Equity Method Our investments have been accounted for under the equity method because we exert significant influence over these affiliates, but we do not control them. Investment income from these equity method investments, which is reported in Miscellaneous expense (income), net was approximately zero in 2019, income of $ 0.1 million in 2018, and loss of $ 0.3 million in 2017. The balance of our equity method investments, which is reported in Other non-current assets, was $ 8.0 million at December 31, 2019, and $ 8.2 million at December 31, 2018. The income (loss) that we record for these investments is equal to our proportionate share of the affiliates’ income or loss and our investments are equal to our proportionate share of the affiliates’ shareholders’ equity based on our ownership percentage. We have summarized below condensed income statement and balance sheet information for the combined equity method investees: 2019 2018 2017 (Dollars in thousands) Net sales $ 16,563 $ 18,950 $ 33,851 Gross profit 2,507 3,343 5,655 Income (loss) from continuing operations ( 861 ) 746 ( 224 ) Net income (loss) ( 689 ) 596 ( 220 ) 2019 2018 (Dollars in thousands) Current assets $ 13,623 $ 17,305 Non-current assets 4,214 3,356 Current liabilities ( 2,994 ) ( 3,832 ) Non-current liabilities ( 161 ) ( 339 ) We had the following transactions with our equity-method investees: 2019 2018 2017 (Dollars in thousands) Sales $ 7,308 $ 4,898 $ 5,378 Purchases 316 15 2,006 Dividends and interest received 154 415 920 Commission and royalties received 363 305 130 Commissions and royalties paid 11 — 57

Quarterly Data

Quarterly Data	12 Months Ended
	Dec. 31, 2019
Quarterly Data [Abstract]
Quarterly Data	23. Quarterly Data (Unaudited ) Net Income Earnings (Loss) Attributable (Loss) to Ferro Corporation Common Attributable Shareholders Per Common Net Income to Ferro Share Net Sales Gross Profit (Loss) Corporation Basic Diluted (Dollars in thousands, except per share data) 2018 Quarter 1 $ 274,448 $ 88,740 $ 23,598 $ 23,391 $ 0.28 $ 0.27 Quarter 2 273,544 90,793 29,861 29,668 0.35 0.35 Quarter 3 267,739 79,732 16,143 16,058 0.19 0.19 Quarter 4 266,492 80,470 11,344 10,976 0.13 0.13 Total $ 1,082,223 $ 339,735 $ 80,946 $ 80,093 $ 0.95 $ 0.94 2019 Quarter 1 $ 264,240 $ 78,012 $ 13,878 $ 13,604 $ 0.16 $ 0.16 Quarter 2 261,978 79,343 11,109 10,871 0.13 0.13 Quarter 3 246,291 76,186 13,210 12,820 0.16 0.16 Quarter 4 245,857 75,275 ( 30,782 ) ( 31,257 ) ( 0.38 ) ( 0.38 ) Total $ 1,018,366 $ 308,816 $ 7,415 $ 6,038 $ 0.07 $ 0.07 Quarterly earnings per share amounts do not always add to the full-year amounts due to the averaging of shares. Restructuring and impairment charges in 2019 were $ 1.7 million in the first quarter, $ 4.1 million in the second quarter, $ 2.1 million in the third quarter, and $ 3.1 million in the fourth quarter. Restructuring and impairment charges in 2018 were $ 1.2 million in the first quarter, $ 2.1 million in the second quarter, $ 1.5 million in the third quarter, and $ 2.3 million in the fourth quarter. Additionally, Net income (loss) and Net income (loss) attributable to Ferro Corporation during the fourth quarter of 2019 include an impairment charge of $ 33.5 million associated with the Tile Coatings business. The impairment charge and related assets are recorded within discontinued operations and as assets held-for-sale, respectively, in our consolidated financial statements as of December 31, 2019. Mark-to-market net losses on our postretirement benefit plans w as $ 13.3 million in the fourth quarter of 2019 and net loses of $ 16.5 million i n the fourth quarter of 2018.

Schedule II - Valuation And Qua

Schedule II - Valuation And Qualifying Accounts And Reserves	12 Months Ended
	Dec. 31, 2019
Schedule II - Valuation And Qualifying Accounts And Reserves [Abstract]
Schedule of Valuation and Qualifying Accounts Disclosure	FERRO CORPORATION AND SUBSIDIARIES SCHEDULE II — VALUATION AND QUALIFYING ACCOUNTS AND RESERVES 1 Years Ended December 31, 2019, 2018 and 2017 Additions Charged Balance at (Reductions Credited) to Adjustment for Beginning of Costs and Differences in Balance at Period Expenses Deductions Exchange Rates End of Period (Dollars in thousands) Allowance for Possible Losses on Collection of Accounts Receivable: Year ended December 31, 2019 $ 5,504 1,086 ( 4,487 ) ( 165 ) $ 1,938 Year ended December 31, 2018 $ 7,821 681 ( 2,642 ) ( 356 ) $ 5,504 Year ended December 31, 2017 $ 8,166 44 ( 1,253 ) 864 $ 7,821 Valuation Allowance on Net Deferred Tax Assets: Year ended December 31, 2019 $ 25,596 — ( 13,978 ) 2 ( 184 ) $ 11,434 Year ended December 31, 2018 $ 32,579 — ( 5,617 ) 2 ( 1,366 ) $ 25,596 Year ended December 31, 2017 $ 37,354 — ( 5,648 ) 2 873 $ 32,579 (1) Schedule II is presented on a total Ferro basis, inclusive of discontinued operations. (2) Included within this deduction is $ 5.4 million, $ 1.7 million and $ 0.8 million for the years ended December 31, 2019, 2018, and 2017 respectively, of valuation allowance release, resulting from the conclusion that the underlying deferred tax assets are more likely than not to be realized.

Significant Accounting Polici_2

Significant Accounting Policies (Policy)	12 Months Ended
	Dec. 31, 2019
Significant Accounting Policies [Abstract]
Principles of Consolidation	Principles of Consolidation Our consolidated financial statements include the accounts of the parent company and the accounts of its subsidiaries and include the results of the Company and all entities in which the Company has a controlling interest. When we consolidate our financial statements, we eliminate intercompany transactions, accounts and profits. When we exert significant influence over an investee but do not control it, we account for the investment and the investment income using the equity method. These investments are reported in Other non-current assets on our consolidated balance sheet. We consolidate financial results for five legal entities in which we do not own 100% of the equity interests, either directly or indirectly through our subsidiaries. These entities have non-controlling interest ownerships ranging from 5 % to 41 %. When we acquire a subsidiary, its financial results are included in our consolidated financial statements from the date of the acquisition. When we dispose of a subsidiary, its financial results are included in our consolidated financial statements until the date of the disposition. In the event that a disposal group meets the criteria for discontinued operations, prior periods are adjusted to reflect the classification.
Use of Estimates and Assumptions in the Preparation of Financial Statements	Use of Estimates and Assumptions in the Preparation of Financial Statements We prepare our consolidated financial statements in conformity with accounting principles generally accepted in the United States, which requires us to make estimates and to use judgments and assumptions that affect the timing and amount of assets, liabilities, equity, revenues and expenses recorded and disclosed. The more significant estimates and judgments relate to revenue recognition, restructuring and cost reduction programs, asset impairment, income taxes, inventories, goodwill, pension and other postretirement benefits, purchase price accounting and environmental liabilities. Actual outcomes could differ from our estimates, resulting in changes in revenues or costs that could have a material impact on the Company’s results of operations, financial position, or cash flows.
Foreign Currency Translation	Foreign Currency Translation The financial results of our operations outside of the U.S. are recorded in local currencies, which generally are also the functional currencies for financial reporting purposes. The results of operations outside of the U.S. are translated from these functional currencies into U.S. dollars using the average monthly currency exchange rates. We use the average currency exchange rate for these results of operations as a reasonable approximation of the results had specific currency exchange rates been used for each individual transaction. Foreign currency transaction gains and losses are recorded, as incurred, as Other expense (income) in the consolidated statements of operations. Assets and liabilities are translated into U.S. dollars using exchange rates at the balance sheet dates, and we record the resulting foreign currency translation adjustments as a separate component of Accumulated other comprehensive loss in equity.
Revenue Recognition	Revenue Recognition Under Accounting Standards Codification (“ASC”) 606, revenues are recognized when control of the promised goods is transferred to our customers, in an amount that reflects the consideration we expect to be entitled to in exchange for those goods. In order to achieve that core principle, the Company applies the following five-step approach: 1) identify the contract with a customer; 2) identify the performance obligations; 3) determine the transaction price; 4) allocate the transaction price to the performance obligations in the contract; and 5) recognize revenue when a performance obligation is satisfied. The Company considers confirmed customer purchase orders, which in some cases are governed by master sales agreements, to be the contracts, from an accounting perspective, with customers. Under our standard contracts, the only performance obligation is the delivery of manufactured goods and the performance obligation is satisfied at a point in time, when the Company transfers control of the manufactured goods. The Company may receive orders for products to be delivered over multiple dates that may extend across several reporting periods. The Company invoices for each order and recognizes revenue for each distinct product upon shipment, once transfer of control has occurred. Payment terms are standard for the industry and jurisdiction in which we operate. In determining the transaction price, the Company evaluates whether the price is subject to refund or adjustment, to determine the net consideration to which the Company expects to be entitled. Discounts or rebates are specifically stated in customer contracts or invoices, and are recorded as a reduction of revenue in the period the related revenue is recognized. The product price as specified on the customer confirmed orders is considered the standalone selling price. The Company allocates the transaction price to each distinct product based on its relative standalone selling price. Revenue is recognized when control of the product is transferred to the customer (i.e., when the Company’s performance obligation is satisfied), which generally occurs at shipment. We review material contracts to determine transfer of control based upon the business practices and legal requirements of each country. For sales of all products, including those containing precious metals, we report revenues on a gross basis, along with their corresponding cost of sales to arrive at gross profit. The amount of shipping and handling fees invoiced to our customers at the time our product is shipped is included in net sales as we are the principal in those activities. Sales, valued-added and other taxes collected from our customers and remitted to governmental authorities are excluded from net sales. Credit memos issued to customers for sales returns and sales adjustments are recorded when they are incurred as a reduction of sales. There were no changes in amounts previously reported in the Company’s consolidated financial statements due to adopting ASC 606. Practical Expedients and Exemptions All material contracts have an original duration of one year or less and, as such, the Company uses the practical expedient applicable to such contracts, and has not disclosed the transaction price for the remaining performance obligations as of the end of each reporting period, or when the Company expects to recognize this revenue. When the period of time between the transfer of control of the goods and the time the customer pays for the goods is one year or less, the Company uses the practical expedient allowed by ASC 606 that provides relief from adjusting the amount of promised consideration for the effects of a financing component. We generally expense sales commissions when incurred because the amortization period is one year or less. These costs are recorded within Selling, general and administrative expenses
Research and Development Expenses	Research and Development Expenses Research and development expenses are expensed as incurred and are included in Selling, general and administrative expenses. Total expenditures for product and application technology, including research and development, customer technical support and other related activities, were approximately $ 41.0 million for 2019, $ 40.1 million for 2018 and $ 36.2 million for 2017.
Restructuring Programs	Restructuring Programs We expense costs associated with exit and disposal activities designed to restructure operations and reduce ongoing costs of operations when we incur the related liabilities or when other triggering events occur. After the appropriate level of management, having the authority, approves the detailed restructuring plan and the appropriate criteria for recognition are met, we establish accruals for employee termination and other costs, as applicable. The accruals are estimates that are based upon factors including statutory and union requirements, affected employees’ lengths of service, salary level, health care benefit choices and contract provisions. We also analyze the carrying value of affected long-lived assets for impairment and reductions in their remaining estimated useful lives. In addition, we record the fair value of any new or remaining obligations when existing operating lease contracts are terminated or abandoned as a result of our exit and disposal activities.
Asset Impairment	Asset Impairment The Company’s long-lived and indefinite-lived assets include property, plant and equipment, goodwill, and intangible assets. We review property, plant and equipment and intangible assets for impairment whenever events or circumstances indicate that their carrying values may not be recoverable. The following are examples of such events or changes in circumstances:  An adverse change in the business climate of a long-lived asset or asset group;  An adverse change in the extent or manner in which a long-lived asset or asset group is used or in its physical condition;  Current operating losses for a long-lived asset or asset group combined with a history of such losses or projected or forecasted losses that demonstrate that the losses will continue; or  A current expectation that, more likely than not, a long-lived asset or asset group will be sold or otherwise significantly disposed of before the end of its previously estimated useful life. The carrying amount of property, plant and equipment and intangible assets is not recoverable if the carrying value of the asset group exceeds the sum of the undiscounted cash flows expected to result from the use and eventual disposition of the asset group. In the event of impairment, we recognize a loss for the excess of the recorded value over fair value. The long-term nature of these assets requires the estimation of cash inflows and outflows several years into the future and only takes into consideration technological advances known at the time of review. We review goodwill for impairment annually using a measurement date of October 31, primarily due to the timing of our annual budgeting process, or more frequently in the event of an impairment indicator. The fair value of each reporting unit that has goodwill is estimated using the average of both the income approach and the market approach, which we believe provides a reasonable estimate of the reporting unit’s fair value, unless facts or circumstances exist which indicate a more representative fair value. The income approach is a discounted cash flow model, which uses projected cash flows attributable to the reporting unit, including an allocation of certain corporate expenses based primarily on proportional sales. We use historical results, trends and our projections of market growth, internal sales efforts and anticipated cost structure assumptions to estimate future cash flows. Using a risk-adjusted, weighted-average cost of capital, we discount the cash flow projections to the measurement date. The market approach estimates a price reasonably expected to be paid by a market participant in the purchase of the reporting units based on a comparison to similar businesses. If the fair value of any reporting unit was determined to be less than its carrying value, we would obtain comparable market values or independent appraisals of its net assets.
Derivative Financial Instruments	Derivative Financial Instruments As part of our risk management activities, we employ derivative financial instruments, primarily interest rate swaps, cross currency swaps and foreign currency forward contracts, to hedge certain anticipated transactions, firm commitments, or assets and liabilities denominated in foreign currencies. We also purchase portions of our energy and precious metal requirements under fixed price forward purchase contracts designated as normal purchase contracts. We record derivatives on our balance sheet as either assets or liabilities that are measured at fair value. For derivative instruments that are designated and qualify as cash flow hedges, the gain or loss on the derivative is reported as a component of Accumulated other comprehensive loss (“AOCL”) and reclassified from AOCL into earnings when the hedged transaction affects earnings. For derivatives that are designated and qualify as net investment hedges, the gain or loss on the derivative is reported as a component of the currency translation in AOCL. Time value is excluded and the cash payments are recognized as an adjustment to interest expense. For derivatives that are not designated as hedges, the gain or loss on the derivative is recognized in current earnings. We only use derivatives to manage well-defined risks and do not use derivatives for speculative purposes.
Postretirement and Other Employee Benefits	Postretirement and Other Employee Benefits We recognize postretirement and other employee benefits expense as employees render the services necessary to earn those benefits. We determine defined benefit pension and other postretirement benefit costs and obligations with the assistance of third parties who perform certain actuarial calculations. The calculations and the resulting amounts recorded in our consolidated financial statements are affected by assumptions including the discount rate, expected long-term rate of return on plan assets, the annual rate of change in compensation for plan-eligible employees, estimated changes in costs of healthcare benefits, mortality tables, and other factors. We evaluate the assumptions used on an annual basis. All costs except the service cost component are recorded in Miscellaneous expense (income), net on the consolidated statement of operations.
Income Taxes	Income Taxes We account for income taxes in accordance with ASC Topic 740, Income Taxes , which requires the recognition of deferred tax assets and liabilities for the expected future tax effects of events that have been included in the financial statements. Under this method, deferred tax assets and liabilities are determined based on the differences between the financial statements and tax basis of assets and liabilities using enacted tax rates in effect for the year in which the differences are expected to reverse. The effect of a change in tax rates on deferred tax assets and liabilities is recognized in income in the period that includes the enactment date. We record deferred tax assets to the extent we believe these assets will more likely than not be realized. In making such determination, we consider all available positive and negative evidence, including future reversals of existing temporary differences, the availability of tax planning strategies, forecasted income, and recent financial operations. We recognize a tax benefit from an uncertain tax position when it is more likely than not that the position will be sustained upon examination, including resolutions of any related appeals or litigation processes, based on the technical merits. We recognize interest and penalties related to uncertain tax positions within the income tax expense line in the accompanying consolidated statements of operations.
Cash Equivalents	Cash Equivalents We consider all highly liquid instruments with original maturities of three months or less when purchased to be cash equivalents. These instruments are carried at cost, which approximates fair value.
Accounts Receivable and the Allowance for Doubtful Accounts	Accounts Receivable and the Allowance for Doubtful Accounts Ferro sells its products to customers in diversified industries throughout the world. No customer or related group of customers represents greater than 10 % of net sales or accounts receivable. We perform ongoing credit evaluations of our customers and require collateral principally for export sales, when industry practices allow and as market conditions dictate, subject to our ability to negotiate secured terms relative to competitive offers. We regularly analyze significant customer accounts and provide for uncollectible accounts based on historical experience, customer payment history, the length of time the receivables are past due, the financial health of the customer, economic conditions and specific circumstances, as appropriate. Changes in these factors could result in additional allowances. Customer accounts we conclude to be uncollectible or to require excessive collection costs are written off against the allowance for doubtful accounts. Historically, write-offs of uncollectible accounts have been within our expectations. Detailed information about the allowance for doubtful accounts is provided below: 2019 2018 2017 (Dollars in thousands) Allowance for doubtful accounts $ 1,756 $ 1,343 $ 2,490 Bad debt expense 808 511 35
Inventories	Inventories We value inventory at the lower of cost or net realizable value, with cost determined utilizing the first-in, first-out (“FIFO”) method. We periodically evaluate the net realizable value of inventories based primarily upon their age, but also upon assumptions of future usage in production, customer demand and market conditions. Inventory values have been reduced to the lower of cost or net realizable value by allowances for slow moving or obsolete goods. We maintain raw materials on our premises that we do not own, including precious metals consigned from financial institutions and customers. We also consign inventory from our vendors. Although we have physical possession of the goods, their value is not reflected on our balance sheet because we do not have legal title. We obtain precious metals under consignment agreements with financial institutions for periods of one year or less. These precious metals are primarily silver, gold, platinum, and palladium and are used in the production of certain products for our customers. Under these arrangements, the financial institutions own the precious metals, and accordingly, we do not report these precious metals as inventory on our consolidated balance sheets although they are physically in our possession. The financial institutions charge us fees for these consignment arrangements, and these fees are recorded as cost of sales. These agreements are cancelable by either party at the end of each consignment period, however, because we have access to a number of consignment arrangements with available capacity, our consignment needs can be shifted among the other participating institutions in order to ensure our supply. In certain cases, these financial institutions can require cash deposits to provide additional collateral beyond the value of the underlying precious metals.
Property, Plant and Equipment	Property, Plant and Equipment We record property, plant and equipment at historical cost. In addition to the original purchased cost, including transportation, installation and taxes, we capitalize expenditures that increase the utility or useful life of existing assets. For constructed assets, we capitalize interest costs incurred during the period of construction. We expense repair and maintenance costs, as incurred. We depreciate property, plant and equipment on a straight-line basis, generally over the following estimated useful lives of the assets: Buildings 20 to 40 years Machinery and equipment 5 to 15 years
Other Capitalized Costs	Other Capitalized Costs We capitalize the costs of computer software developed or obtained for internal use after the preliminary project stage has been completed, and management, with the relevant authority, authorizes and commits to funding a computer software project, and it is probable that the project will be completed and the software will be used to perform the function intended. External direct costs of materials and services consumed in developing or obtaining internal-use computer software, payroll and payroll-related costs for employees who are directly associated with the project, and interest costs incurred when developing computer software for internal use are capitalized within Intangible assets. Capitalization ceases when the project is substantially complete, generally after all substantial testing is completed. We expense training costs and data conversion costs as incurred. We amortize software on a straight-line basis over its estimated useful life, which has historically been in a range of 1 to 10 years.
Environmental Liabilities	Environmental Liabilities As part of the production of some of our products, we handle, process, use and store hazardous materials. As part of these routine processes, we expense recurring costs associated with control and disposal of hazardous materials as they are incurred. Occasionally, we are subject to ongoing, pending or threatened litigation related to the handling of these materials or other matters. If, based on available information, we believe that we have incurred a liability and we can reasonably estimate the amount, we accrue for environmental remediation and other contingent liabilities. We disclose material contingencies if the likelihood of the potential loss is reasonably possible but the amount is not reasonably estimable. In estimating the amount to be accrued for environmental remediation, we use assumptions about:  Remediation requirements at the contaminated site;  The nature of the remedy;  Existing technology;  The outcome of discussions with regulatory agencies;  Other potentially responsible parties at multi-party sites; and  The number and financial viability of other potentially responsible parties. We actively monitor the status of sites, and, as assessments and cleanups proceed, we update our assumptions and adjust our estimates as necessary. Because the timing of related payments is uncertain, we do not discount the estimated remediation costs. The following section provides a description of new accounting pronouncements ("Accounting Standard Update" or "ASU") issued by the Financial Accounting Standards Board ("FASB") that are applicable to the Company.
Recently Adopted Accounting Pronouncements	Recently Adopted Accounting Pronouncement On January 1, 2019, we adopted No. ASU 2016-02, Leases: (Topic 842), using the new transition method under ASU 2018-11, Targeted Improvements. ASU 2016-02 requires companies to recognize a lease liability and asset on the balance sheet for operating leases with a term greater than one year. ASU 2018-11 provided an additional transition method to adopt the new leasing standard. Under this new transition method, an entity initially applies the new leasing standard using a cumulative-effect adjustment to the opening balance of retained earnings, but will continue to report comparative periods under existing guidance in accordance with ASC 840, Leases . We elected the package of practical expedients permitted under the transition guidance, which allowed us to carry forward our historical lease classification, our assessment on whether a contract is or contains a lease, and our initial direct costs for any leases that existed prior to adoption of the new standard. We also elected to combine lease and non-lease components for all asset classes. We elected the short-term lease recognition exemption for all leases that qualify. Consequently, for those leases that qualify, we will not recognize right-of-use assets or lease liabilities on the balance sheet. The impact of adoption resulted in $ 28.6 million recognized as total right-of-use assets and total lease liabilities on our consolidated balance sheet as of January 1, 2019. Other than this impact, the adoption of ASU 2016-02 did not have a material impact on our remaining consolidated financial statements. In addition to the pronouncement above, the following ASUs were adopted during 2019. The impact on our consolidated financial statements is described within the table below: Standard Description ASU No. 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework-Changes to the Disclosure Requirements for Fair Value Measurement , issued August, 2018 Modifies the disclosure requirements on fair value measurements. The Company updated the disclosures for the fair value measurements in accordance with the standard updates. ASU No. 2018-02, Income Statement – Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income , issued February, 2018 Allows a reclassification from AOCL to Retained Earnings for stranded tax effects resulting from the Tax Cuts and Jobs Act and requires certain disclosures about stranded tax effects. The Company has elected not to reclassify the stranded tax effects resulting from the Tax Cuts and Jobs Act within AOCL. ASU No. 2017-04, Intangibles – Goodwill and Other: (Topic 350): Simplifying the Test for Goodwill Impairment , issued January 2017 Intended to simplify the subsequent measurement of goodwill by eliminating Step 2 from the current goodwill impairment test. The Company updated its goodwill impairment test in accordance with the standard updates on a prospective basis.
New Accounting Standards Not Yet Adopted	New Accounting Standards Not Yet Adopted We are currently evaluating the impact on our financial statements of the following ASUs: Standard Description ASU No. 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes , issued December, 2019 Simplifies the accounting for income taxes by removing certain exceptions and by: altering the recognition of franchise tax partially based on income; requiring evaluation of proper treatment of a step up in the tax basis of goodwill; specifying requirements regarding the allocation of tax expense to a legal entity that is not subject to tax; requiring the effect of an enacted change in tax laws or rates be reflected in the annual effective tax rate computation in the interim period that includes the enactment date, and; other minor codification improvements. This ASU is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2020. Early adoption is permitted. ASU No. 2018-14, Compensation-Retirement Benefits-Defined Benefit Plans-General (Subtopic 715-20): Disclosure Framework-Changes to the Disclosure Requirements for Defined Benefit Plans , issued August, 2018 Modifies disclosure requirements for employers that sponsor defined benefit pension or other postretirement plans. This ASU is effective for fiscal years beginning after December 15, 2020 and is to be applied using a retrospective approach for all periods presented. Early adoption is permitted. ASU No. 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments , issued June 2016 Changes the way entities recognize impairment of financial assets by requiring immediate recognition of estimated credit losses expected to occur over the remaining life of the financial asset. Additional disclosures are required regarding an entity’s assumptions, models and methods for estimating the expected credit loss. This ASU will be effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years, and is to be applied using a modified retrospective approach. Early adoption is permitted. We continue to evaluate the impact the adoption of this ASU will have on our financial statements and related disclosures but currently do not expect the impact to be significant. No other new accounting pronouncements issued had, or are expected to have, a material impact of the Company’s consolidated financial statements.

Significant Accounting Polici_3

Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2019
Significant Accounting Policies [Abstract]
Detailed Information about Allowance for Doubtful Accounts	2019 2018 2017 (Dollars in thousands) Allowance for doubtful accounts $ 1,756 $ 1,343 $ 2,490 Bad debt expense 808 511 35
Estimated Lives of Prperty, Plant and Equipment	Buildings 20 to 40 years Machinery and equipment 5 to 15 years

Revenue (Tables)

Revenue (Tables)	12 Months Ended
	Dec. 31, 2019
Revenue [Abstract]
Revenues Disaggregated By Geography And Reportable Segment	Revenues disaggregated by geography and reportable segment for the year ended December 31, 2019, follow: EMEA United States Asia Pacific Latin America Total (Dollars in thousands) Performance Colors and Glass $ 298,197 $ 197,494 $ 102,431 $ 50,570 $ 648,692 Color Solutions 136,934 161,773 37,485 33,482 369,674 Total net sales $ 435,131 $ 359,267 $ 139,916 $ 84,052 $ 1,018,366 Revenues disaggregated by geography and reportable segment for the year ended December 31, 2018, follow: EMEA United States Asia Pacific Latin America Total (Dollars in thousands) Performance Colors and Glass $ 328,299 $ 207,012 $ 103,649 $ 52,236 $ 691,196 Color Solutions 142,102 172,901 41,642 34,382 391,027 Total net sales $ 470,401 $ 379,913 $ 145,291 $ 86,618 $ 1,082,223 Revenues disaggregated by geography and reportable segment for the year ended December 31, 2017, follow: EMEA United States Asia Pacific Latin America Total (Dollars in thousands) Performance Colors and Glass $ 284,979 $ 201,753 $ 95,682 $ 55,908 $ 638,322 Color Solutions 134,122 154,730 36,343 32,865 358,060 Total net sales $ 419,101 $ 356,483 $ 132,025 $ 88,773 $ 996,382

Discontinued Operations (Tables

Discontinued Operations (Tables)	12 Months Ended
	Dec. 31, 2019
Discontinued Operations [Abstract]
Summary Of Discontinued Operations	The table below summarizes results for the Tile Coatings business for the year ended December 31, 2019, 2018 and 2017 which are reflected in our consolidated statements of operations as discontinued operations. Interest expense has been allocated to the discontinued operations based on the ratio of net assets of the business to consolidated net assets excluding debt. 2019 2018 2017 (Dollars in thousands) Net sales $ 487,584 $ 530,185 $ 400,360 Cost of sales 385,890 413,987 310,858 Gross profit 101,694 116,198 89,502 Selling, general and administrative expenses 71,471 58,619 48,128 Restructuring and impairment charges 44,378 6,179 2,886 Interest expense 11,556 12,835 9,293 Interest earned ( 122 ) ( 125 ) ( 119 ) Foreign currency losses (gains), net ( 2,397 ) 1,852 3,114 Miscellaneous expense (income), net 2,127 3,896 ( 1,003 ) Income (loss) from discontinued operations before income taxes ( 25,319 ) 32,942 27,203 Income tax expense 2,658 8,916 6,337 Income (loss) from discontinued operations, net of income taxes ( 27,977 ) 24,026 20,866 Less: Net income attributable to noncontrolling interests 290 2 10 Net income (loss) attributable to Tile Coatings business $ ( 28,267 ) $ 24,024 $ 20,856 The following table summarizes the assets and liabilities which are classified as held-for-sale at December 31, 2019 and 2018: December 31, December 31, 2019 2018 Cash and cash equivalents $ 8,200 $ 8,200 Accounts receivable, net 160,174 151,975 Inventories 100,981 111,227 Other receivables 22,442 23,989 Other current assets 3,006 2,814 Current assets held-for-sale 294,803 298,205 Property, plant and equipment, net 99,429 105,802 Goodwill 3 43,511 Amortizable intangible assets, net 39,687 42,990 Deferred income taxes 14,425 14,962 Other non-current assets 5,455 2,306 Non-current assets held-for-sale 158,999 209,571 Total assets held-for-sale $ 453,802 $ 507,776  Loans payable and current portion of long-term debt $ 3,678 $ 5,838 Accounts payable 96,967 123,820 Accrued payrolls 4,838 3,396 Accrued expenses and other current liabilities 27,523 25,128 Current liabilities held-for-sale 133,006 158,182 Long-term debt, less current portion 25,805 54,173 Postretirement and pension liabilities 7,473 6,365 Other non-current liabilities 4,211 3,945 Non-current liabilities held-for-sale 37,489 64,483 Total liabilities held-for-sale $ 170,495 $ 222,665 The following table summarizes cash flow data relating to discontinued operations for the years ended December 31, 2019, 2018 and 2017: 2019 2018 2017 (Dollars in thousands) Depreciation $ 11,264 $ 10,778 $ 10,080 Amortization of intangible assets 3,192 3,219 3,019 Capital expenditures ( 10,126 ) ( 5,265 ) ( 4,656 ) Non-cash operating activities - fixed asset impairment — — 1,243 Non-cash operating activities - goodwill impairment 42,515 — — Non-cash operating activities - restructuring 127 — 1,868 Non-cash investing activities - capital expenditures, consisting of unpaid capital expenditure liabilities at year end 1,096 5,872 448

Inventories (Tables)

Inventories (Tables)	12 Months Ended
	Dec. 31, 2019
Inventories [Abstract]
Inventories	2019 2018 (Dollars in thousands) Raw materials $ 80,265 $ 77,836 Work in process 49,717 42,093 Finished goods 134,640 125,842 Total inventories $ 264,622 $ 245,771

Property, Plant And Equipment (

Property, Plant And Equipment (Tables)	12 Months Ended
	Dec. 31, 2019
Property, Plant And Equipment [Abstract]
Property, Plant and Equipment	2019 2018 (Dollars in thousands) Land $ 35,564 $ 36,460 Buildings 152,586 152,221 Machinery and equipment 427,081 401,038 Construction in progress 92,442 71,079 Total property, plant and equipment 707,673 660,798 Total accumulated depreciation ( 407,668 ) ( 385,259 ) Property, plant and equipment, net $ 300,005 $ 275,539

Goodwill And Other Intangible_2

Goodwill And Other Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2019
Goodwill And Other Intangible Assets [Abstract]
Details and Activity of Goodwill by Segment	Performance Colors and Color Glass Solutions Total (Dollars in thousands) Goodwill, net at December 31, 2017 $ 114,934 $ 42,535 $ 157,469 Acquisitions (1) 8,530 8,857 17,387 Foreign currency adjustments ( 1,056 ) ( 847 ) ( 1,903 ) Goodwill, net at December 31, 2018 $ 122,408 $ 50,545 $ 172,953 Foreign currency adjustments ( 506 ) ( 238 ) ( 744 ) Goodwill, net at December 31, 2019 $ 121,902 $ 50,307 $ 172,209 (1) During 2018, the Company recorded: 1) goodwill related to the UWiZ and Diegel acquisitions within the Color Solutions segment and 2) goodwill related to the MRA acquisition and a purchase price adjustment within the measurement period for goodwill related to the Dip-Tech acquisition within the Performance Colors and Glass segment.
Schedule Of Impairment Of Goodwill	December 31, December 31, 2019 2018 (Dollars in thousands) Goodwill, gross $ 230,676 $ 231,420 Accumulated impairment losses ( 58,467 ) ( 58,467 ) Goodwill, net $ 172,209 $ 172,953
Significant Assumptions and Ranges of Assumptions Used in Impairment Analysis of Goodwill	Significant Assumptions 2019 2018 Weighted-average cost of capital 11.5 % - 12.0 % 13.0 % - 14.75 % Residual growth rate 3.0 % 3.0 %
Details of Amortizable Intangible Assets	Estimated Economic Life 2019 2018 (Dollars in thousands) Gross amortizable intangible assets: Patents 10 - 16 years $ 5,434 $ 5,462 Land rights 20 - 40 years 2,979 3,015 Technology/know-how and other 1 - 30 years 122,088 112,734 Customer relationships 10 - 20 years 66,454 68,184 Total gross amortizable intangible assets 196,955 189,395 Accumulated amortization: Patents ( 5,413 ) ( 5,441 ) Land rights ( 1,452 ) ( 1,389 ) Technology/know-how and other ( 60,121 ) ( 42,337 ) Customer relationships ( 14,831 ) ( 11,078 ) Total accumulated amortization ( 81,817 ) ( 60,245 ) Amortizable intangible assets, net $ 115,138 $ 129,150
Schedule of Indefinite-Lived Intangible Assets	2019 2018 (Dollars in thousands) Indefinite-lived intangibles assets: Trade names and trademarks $ 12,682 $ 12,813

Debt And Other Financing (Table

Debt And Other Financing (Tables)	12 Months Ended
	Dec. 31, 2019
Debt And Other Financing [Abstract]
Loans Payable And Current Portion Of Long-Term Debt	2019 2018 (Dollars in thousands) Loans payable $ — $ 50 Current portion of long-term debt 8,703 8,871 Loans payable and current portion of long-term debt $ 8,703 $ 8,921
Summary Of Long-Term Debt	2019 2018 (Dollars in thousands) Term loan facility, net of unamortized issuance costs, maturing 2024 (1) $ 801,764 $ 809,022 Capital lease obligations 2,305 1,832 Other notes 3,496 4,098 Total long-term debt 807,565 814,952 Current portion of long-term debt ( 8,703 ) ( 8,871 ) Long-term debt, less current portion $ 798,862 $ 806,081 (1) The carrying value of the term loan facility, maturing 2024, is net of unamortized debt issuance costs of $ 3.9 million at December 31, 2019 and $ 4.8 million at December 31, 2018.
Annual Maturities Of Long-term Debt	2020 $ 8,938 2021 8,819 2022 8,810 2023 8,719 2024 773,275 Thereafter 3,550 Total maturities of long-term debt 812,111 Unamortized issuance costs on Term loan facility ( 3,886 ) Imputed interest and executory costs on capitalized lease obligations ( 660 ) Total long-term debt $ 807,565
(Schedule Of Trade Accounts Receivable In International Receivable Sales Programs	2019 2018 (Dollars in thousands) Trade accounts receivable sold to financial institutions $ 59,293 $ 13,788 — Cash proceeds from financial institutions (1) 39,958 8,282 — Trade accounts receivable collected to be remitted (2) 12,817 1,844 — (1) In 2019 and 2018, our Tile Coatings business received cash proceeds from financial institutions of $ 131.5 million and $ 49.0 million, respectively. Refer to Note 4 for additional discussion of the Tile Coatings business and its classification as discontinued operations. (2) Included in Accrued expense and other current liabilities. During 2019 and 2018, trade accounts receivable collected to be remitted of $ 12.8 million and $ 9.7 million, respectively, pertained to the Tile Coatings business and is included in Current liabilities held-for-sale in our consolidated balance sheets.

Financial Instruments (Tables)

Financial Instruments (Tables)	12 Months Ended
	Dec. 31, 2019
Financial Instruments Assets (Liabilities) Measured At Fair Value	December 31, 2019 Carrying Fair Value Amount Total Level 1 Level 2 Level 3 (Dollars in thousands) Cash and cash equivalents $ 96,202 $ 96,202 $ 96,202 $ — $ — Term loan facility - Amended Credit Facility (1) ( 801,764 ) ( 799,750 ) — ( 799,750 ) — Other long-term notes payable ( 3,496 ) ( 1,557 ) — ( 1,557 ) — Cross currency swaps 22,111 22,111 — 22,111 — Interest rate swaps ( 14,698 ) ( 14,698 ) — ( 14,698 ) — Foreign currency forward contracts, net 601 601 — 601 — December 31, 2018 Carrying Fair Value Amount Total Level 1 Level 2 Level 3 (Dollars in thousands) Cash and cash equivalents $ 96,101 $ 96,101 $ 96,101 $ — $ — Loans payable ( 50 ) ( 50 ) — ( 50 ) — Term loan facility - Credit Facility (1) ( 809,022 ) ( 796,796 ) — ( 796,796 ) — Other long-term notes payable ( 4,098 ) ( 1,772 ) — ( 1,772 ) — Cross currency swaps 17,104 17,104 — 17,104 — Interest rate swaps ( 5,244 ) ( 5,244 ) — ( 5,244 ) — Foreign currency forward contracts, net ( 270 ) ( 270 ) — ( 270 ) — (1) The carrying values of the term loan facilities are net of unamortized debt issuance costs of $ 3.9 million and $ 4.8 million for the period ended December 31, 2019, and December 31, 2018, respectively.
Schedule Of Gain (Loss) Recognized In AOCI And The Amount Of (Loss) Gain Reclassified Into Earnings	Amount of Loss (Gain) Amount of Gain (Loss) Reclassified from Location of Gain (Loss) Recognized in AOCL AOCL into Income Reclassified from 2019 2018 2019 2018 AOCL into Income (Dollars in thousands) Interest rate swaps $ ( 11,050 ) $ ( 4,513 ) $ ( 441 ) $ ( 966 ) Interest expense Cross currency swaps 8,319 15,901 5,844 3,616 Interest expense $ 5,403 $ 2,650 Total Interest expense Cross currency swaps 4,759 14,509 Foreign currency losses, net $ 4,759 $ 14,509 Total Foreign currency losses, net
Effect On Derivative Instruments On Consolidated Statements Of Operations	Amount of Loss Recognized in Earnings 2019 2018 2017 Location of Loss in Earnings (Dollars in thousands) Foreign currency forward contracts $ ( 2,462 ) $ ( 12 ) $ ( 2,938 ) Foreign currency losses, net
Summary Of Gain (Loss) Recognized In AOCI, The Amount Reclassified Into Earnings And The Amount Gain Recognized In Income On Derivative (Amount Excluded From Effectiveness Testing)	Amount of Gain Amount of Gain Recognized in Amount of Gain Reclassified from Income on Derivative (Amount Recognized in AOCL AOCL into Income Excluded from Effectiveness Testing) Location of Gain 2019 2018 2019 2018 2019 2018 in Earnings (Dollars in thousands) Cross currency swaps $ 6,330 $ 7,243 $ — $ — $ 3,688 $ 2,261 Interest expense
Fair Value Of Derivative Instruments On Consolidated Balance Sheets	2019 2018 Balance Sheet Location (Dollars in thousands) Asset derivatives: Cross currency swaps $ 6,711 $ 9,606 Other current assets Cross currency swaps 15,400 7,498 Other non-current assets Foreign currency forward contracts 1,474 626 Other current assets Liability derivatives: Interest rate swaps $ ( 3,723 ) $ ( 755 ) Accrued expenses and other current liabilities Interest rate swaps ( 10,975 ) ( 4,489 ) Other non-current liabilities Foreign currency forward contracts ( 873 ) ( 896 ) Accrued expenses and other current liabilities
Net Investment Hedging [Member]
Effect On Derivative Instruments On Consolidated Statements Of Operations	2019 2018 (Dollars in thousands) Interest expense $ 24,302 $ 23,659 Foreign currency losses, net 9,166 6,335

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2019
Income Taxes [Abstract]
Earnings Before Income Taxe Expense	2019 2018 2017 (Dollars in thousands) U.S. $ 18,709 $ 13,854 $ 20,816 Foreign 24,802 57,196 62,499 Total $ 43,511 $ 71,050 $ 83,315
Income Tax Expense From Continuing Operations	2019 2018 2017 (Dollars in thousands) Current: U.S. federal $ 475 $ 449 $ 714 Foreign 18,358 19,548 25,908 State and local 168 211 123 Total current 19,001 20,208 26,745 Deferred: U.S. federal ( 3,832 ) 3,265 25,125 Foreign ( 8,340 ) ( 9,157 ) ( 5,801 ) State and local 1,290 ( 186 ) 344 Total deferred ( 10,882 ) ( 6,078 ) 19,668 Total income tax expense (benefit) $ 8,119 $ 14,130 $ 46,413
Income Tax Expense (Benefit) Allocated Directly to Ferro Corporation Shareholders' Equity	2019 2018 2017 (Dollars in thousands) Interest rate swaps $ ( 3,210 ) $ ( 1,529 ) $ 547 Postretirement benefit liability adjustments 11 ( 32 ) 1 Net investment hedge 654 954 ( 4,025 ) Foreign currency translations 27 — — Total income tax (benefit) expense allocated to Ferro Corporation shareholders' equity $ ( 2,518 ) $ ( 607 ) $ ( 3,477 )
Reconciliation of U.S. Federal Statutory Income Tax Rate and Effective Tax Rate	2019 2018 2017 U.S. federal statutory income tax rate 21.0 % 21.0 % 35.0 % Foreign tax rate difference 9.8 7.4 ( 5.9 ) Non-deductible expenses 4.4 2.9 0.1 Global intangible low-taxed income, net 2.8 1.8 — Other 2.8 ( 2.5 ) ( 1.9 ) Uncertain tax positions, net of tax audit settlements 1.7 3.8 7.0 Foreign currency 1.4 0.3 0.7 Foreign withholding taxes 1.3 1.0 0.7 State taxes 1.3 0.7 ( 0.6 ) Tax rate changes 0.9 ( 3.0 ) 25.2 Goodwill dispositions, impairments and amortization ( 1.2 ) — ( 0.5 ) Tax credits ( 3.2 ) ( 1.7 ) ( 1.2 ) Foreign derived intangible income deduction ( 3.2 ) ( 1.6 ) — Net adjustment of prior year accrual ( 5.0 ) ( 4.2 ) ( 1.0 ) Adjustment of valuation allowances ( 16.1 ) ( 6.0 ) ( 1.9 ) Effective tax rate 18.7 % 19.9 % 55.7 %
Components of Deferred Tax Assets and Liabilities	2019 2018 (Dollars in thousands) Deferred tax assets: Foreign operating loss carryforwards $ 35,394 $ 41,611 Pension and other benefit programs 39,633 37,397 Foreign tax credit carryforwards 11,423 17,356 Accrued liabilities 10,726 11,114 Other credit carryforwards 6,707 5,815 Other 11,161 9,035 State and local operating loss carryforwards 2,058 2,272 Inventories 2,366 2,153 Allowance for doubtful accounts 746 704 Currency differences 1,407 — Total deferred tax assets 121,621 127,457 Deferred tax liabilities: Property, plant and equipment and intangibles -- depreciation and amortization 23,617 28,601 Unremitted earnings of foreign subsidiaries 1,594 1,575 Other 2,115 2,784 Total deferred tax liabilities 27,326 32,960 Net deferred tax assets before valuation allowance 94,295 94,497 Valuation allowance ( 10,447 ) ( 24,577 ) Net deferred tax assets $ 83,848 $ 69,920
Expirations of Operating Loss Carryforwards and Tax Credit Carryforwards	Operating Loss Tax Credit Carryforwards Carryforwards Expiring in: (Dollars in thousands) 2020 $ 10,175 $ 137 2021-2025 23,953 10,791 2026-2030 22,814 6,469 2031-2035 11,943 3,267 2036-2040 81 966 2041-Indefinitely 125,307 987 Total $ 194,273 $ 22,617
Classification of Net Deferred Income Tax Assets	2019 2018 (Dollars in thousands) Non-current assets $ 98,714 $ 88,526 Non-current liabilities ( 14,866 ) ( 18,606 ) Net deferred tax assets $ 83,848 $ 69,920
Activity and Balances of Unrecognized Tax Benefits	2019 2018 2017 (Dollars in thousands) Balance at beginning of year $ 24,869 $ 28,470 $ 30,085 Additions based on tax positions related to the current year 3,425 4,041 1,609 Additions for tax positions of prior years — 24 2,057 Reductions for tax positions of prior years — ( 1,710 ) ( 288 ) Reductions as a results of expiring statutes of limitations ( 688 ) ( 420 ) ( 6,284 ) Foreign currency adjustments ( 660 ) ( 786 ) 1,644 Settlements with taxing authorities ( 946 ) ( 4,750 ) ( 353 ) Balance at end of year $ 26,000 $ 24,869 $ 28,470

Retirement Benefits (Tables)

Retirement Benefits (Tables)	12 Months Ended
	Dec. 31, 2019
Retirement Benefits [Abstract]
Net Periodic Benefit (Credit) Cost	U.S. Pension Plans Non-U.S. Plans 2019 2018 2017 2019 2018 2017 (Dollars in thousands) Service cost $ 10 $ 11 $ 11 $ 1,410 $ 1,392 $ 1,410 Interest cost 11,787 11,308 14,594 2,264 2,166 2,089 Expected return on plan assets ( 12,622 ) ( 15,982 ) ( 20,111 ) ( 758 ) ( 755 ) ( 773 ) Amortization of prior service cost — — 7 7 6 8 Mark-to-market actuarial net losses (gains) 1,228 16,633 ( 5,432 ) 11,033 2,444 ( 1,792 ) Curtailment and settlement effects losses — — 2,581 292 156 28 Special termination benefits — — — — 106 27 Net periodic benefit cost (credit) $ 403 $ 11,970 $ ( 8,350 ) $ 14,248 $ 5,515 $ 997 Weighted-average assumptions: Discount rate 4.40 % 3.80 % 4.40 % 2.61 % 2.35 % 2.24 % Rate of compensation increase N/A N/A N/A 3.19 % 3.18 % 3.14 % Expected return on plan assets 7.70 % 7.70 % 8.20 % 2.74 % 2.55 % 2.54 %
Defined Benefit Pension Plans	U.S. Pension Plans Non-U.S. Pension Plans 2019 2018 2019 2018 (Dollars in thousands) Change in benefit obligation Benefit obligation at beginning of year $ 279,885 $ 303,170 $ 106,098 $ 109,450 Service cost 10 11 1,410 1,392 Interest cost 11,787 11,308 2,264 2,166 Curtailments — — ( 45 ) — Amendments — — 23 — Settlements — ( 25 ) ( 734 ) ( 517 ) Special termination benefits — — — 106 Plan participants' contributions — — 14 21 Benefits paid ( 19,978 ) ( 20,165 ) ( 5,367 ) ( 2,658 ) Net transfer in — — — 140 Actuarial loss (gain) 24,477 ( 14,414 ) 14,949 816 Exchange rate effect — — ( 1,914 ) ( 4,818 ) Benefit obligation at end of year $ 296,181 $ 279,885 $ 116,698 $ 106,098 Accumulated benefit obligation at end of year $ 296,181 $ 279,885 $ 107,332 $ 97,406 Change in plan assets: Fair value of plan assets at beginning of year $ 204,425 $ 239,260 $ 32,979 $ 36,314 Actual return on plan assets 35,871 ( 15,065 ) 4,336 ( 1,029 ) Employer contributions 2,909 420 3,277 2,523 Plan participants' contributions — — 14 21 Benefits paid ( 19,978 ) ( 20,165 ) ( 5,367 ) ( 2,658 ) Effect of settlements — ( 25 ) ( 734 ) ( 517 ) Exchange rate effect — — ( 607 ) ( 1,675 ) Fair value of plan assets at end of year $ 223,227 $ 204,425 $ 33,898 $ 32,979 Amounts recognized in the balance sheet: Other non-current assets $ — $ — $ 44 $ — Accrued expenses and other current liabilities ( 410 ) ( 404 ) ( 2,589 ) ( 2,912 ) Postretirement and pension liabilities ( 72,544 ) ( 75,056 ) ( 80,255 ) ( 70,205 ) Funded status $ ( 72,954 ) $ ( 75,460 ) $ ( 82,800 ) ( 73,117 ) U.S. Pension Plans Non-U.S. Pension Plans 2019 2018 2019 2018 (Dollars in thousands) Weighted-average assumptions as of December 31: Discount rate 3.35 % 4.40 % 1.76 % 2.61 % Rate of compensation increase N/A N/A 3.11 % 3.19 % Pension plans with benefit obligations in excess of plan assets: Benefit obligations $ 296,181 $ 279,885 $ 84,791 $ 78,791 Plan assets 223,227 204,425 1,946 5,674 Pension plans with accumulated benefit obligations in excess of plan assets: Projected benefit obligations $ 296,181 $ 279,885 $ 84,338 $ 76,097 Accumulated benefit obligations 296,181 279,885 75,073 67,619 Plan assets 223,227 204,425 1,553 3,100 Activity and balances in Accumulated other comprehensive loss related to defined benefit pension plans are summarized below: U.S. Pension Plans Non-U.S. Pension Plans 2019 2018 2019 2018 (Dollars in thousands) Prior service (cost): Balance at beginning of year $ — $ — $ ( 22 ) $ 2 Amounts recognized as net periodic benefit costs — — ( 7 ) ( 6 ) Plan amendments — — ( 14 ) — Exchange rate effects — — ( 1 ) ( 18 ) Balance at end of year $ — $ — $ ( 44 ) $ ( 22 ) Estimated amounts to be amortized in 2020 $ — $ ( 8 )
Fair Value of Pension Plan Assets	Level 1 Level 2 Level 3 Total (Dollars in thousands) U.S. plans: Fixed income: Guaranteed deposits $ — 1,863 — 1,863 Mutual funds 73,563 — — 73,563 Commingled funds — 434 244 678 Equities: U.S. common stocks 4,198 — — 4,198 Mutual funds 128,546 — — 128,546 Commingled funds — 706 — 706 Total assets in the fair value hierarchy $ 206,307 $ 3,003 $ 244 $ 209,554 Investments measured at net asset value — — — 13,673 Investments at fair value $ 206,307 $ 3,003 $ 244 $ 223,227 Non-U.S. plans Fixed income: Cash and cash equivalents $ 10 $ — $ — $ 10 Guaranteed deposits — 748 30,155 30,903 Mutual funds 2,352 — — 2,352 Other 89 — — 89 Equities: Mutual funds 544 — — 544 Other assets — — — — Total $ 2,995 $ 748 $ 30,155 $ 33,898 The fair values of our pension plan assets at December 31, 2018, by asset category are as follows: Level 1 Level 2 Level 3 Total (Dollars in thousands) U.S. plans: Fixed income: Guaranteed deposits $ — 1,723 — 1,723 Mutual funds 74,310 — — 74,310 Commingled funds — 502 226 728 Equities: U.S. common stocks 4,439 — — 4,439 Mutual funds 109,756 — — 109,756 Commingled funds — 695 — 695 Total assets in the fair value hierarchy $ 188,505 $ 2,920 $ 226 $ 191,651 Investments measured at net asset value — — — 12,774 Investments at fair value $ 188,505 $ 2,920 $ 226 $ 204,425 Non-U.S. plans Fixed income: Cash and cash equivalents $ — $ 89 $ — $ 89 Guaranteed deposits 32 744 27,318 28,094 Mutual funds 1,070 — — 1,070 Other 1,068 2,126 — 3,194 Equities: Mutual funds 451 — — 451 Other assets 81 — — 81 Total $ 2,702 $ 2,959 $ 27,318 $ 32,979
Schedule of Rollforward of Level 3 Assets	Guaranteed Commingled deposits funds Total (Dollars in thousands) Balance at December 31, 2017 $ 30,127 $ 269 $ 30,396 Sales ( 487 ) — ( 487 ) Gains (losses) included in earnings ( 960 ) ( 43 ) ( 1,003 ) Exchange rate effect ( 1,362 ) — ( 1,362 ) Balance at December 31, 2018 $ 27,318 $ 226 $ 27,544 Sales ( 473 ) — ( 473 ) Gains (losses) included in earnings 3,885 18 3,903 Exchange rate effect ( 575 ) — ( 575 ) Balance at December 31, 2019 30,155 244 $ 30,399
Future Pension Benefit Payments	U.S. Plans Non-U.S. Plans (Dollars in thousands) 2020 $ 20,340 $ 3,487 2021 20,580 3,275 2022 20,952 3,655 2023 20,450 4,017 2024 20,336 3,371 2025-2029 96,857 22,516
Postretirement Health Care and Life Insurance Benefit Plans	2019 2018 2017 (Dollars in thousands) Net periodic benefit cost: Interest expense $ 702 $ 732 $ 843 Service cost 2 — — Mark-to-market actuarial net loss (gain) 1,080 ( 2,580 ) 458 Total net periodic benefit cost (credit) $ 1,784 $ ( 1,848 ) $ 1,301 Weighted-average assumptions: Discount rate 4.30 % 3.70 % 4.20 % Current trend rate for health care costs 6.30 % 6.40 % 6.50 % Ultimate trend rate for health care costs 4.50 % 4.50 % 4.50 % Year that ultimate trend rate is reached 2036 2036 2036
Schedule of Effect of One-Percentage-Point Change in Assumed Health Care Cost Trend Rates	A one-percentage-point change in the assumed health care cost trend rates would have the following effect: 1-Percentage- 1-Percentage- Point Point Increase Decrease (Dollars in thousands) Effect on total of service and interest costs components $ 38 $ ( 34 ) Effect on postretirement benefit obligation 877 ( 773 ) 2019 2018 (Dollars in thousands) Change in benefit obligation: Benefit obligation at beginning of year $ 17,198 $ 20,725 Service cost 2 — Interest cost 702 732 Benefits paid ( 1,833 ) ( 1,679 ) Actuarial loss (gain) 1,080 ( 2,580 ) Benefit obligation at end of year $ 17,149 $ 17,198 Change in plan assets: Fair value of plan assets at beginning of year $ — $ — Employer contributions 1,836 1,679 Benefits paid ( 1,836 ) ( 1,679 ) Fair value of plan assets at end of year $ — $ — Amounts recognized in the balance sheet: Accrued expenses and other current liabilities $ ( 1,945 ) $ ( 1,966 ) Postretirement and pension liabilities ( 15,204 ) ( 15,232 ) Funded status $ ( 17,149 ) $ ( 17,198 ) Weighted-average assumptions as of December 31: Discount rate 3.25 % 4.30 % Current trend rate for health care costs 6.10 % 6.30 % Ultimate trend rate for health care costs 4.50 % 4.50 % Year that ultimate trend rate is reached 2036 2036
Future Postretirement Health Care and Life Insurance Benefit Payments	Before Medicare After Medicare Subsidy Subsidy (Dollars in thousands) 2020 $ 1,945 $ 1,737 2021 1,846 1,651 2022 1,741 1,559 2023 1,635 1,466 2024 1,537 1,382 2025-2029 6,181 5,589

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	12 Months Ended
	Dec. 31, 2019
Stock Options [Member]
Details Of Weighted-Average Grant-Date Fair Values And Assumptions Used For Estimating Fair Values	2019 2018 2017 Weighted-average grant-date fair value $ 6.47 $ 8.91 $ 7.29 Expected life, in years 5.6 5.4 6.0 Risk-free interest rate 2.5 % 2.7 % 1.9 % - 2.3 % Expected volatility 33.9 % 39.7 % 48.0 % - 51.5 % Expected dividend yield — % — % — %
Summary of Stock-Based Compensation Activity	Weighted- Average Weighted- Remaining Aggregate Number of Average Contractual Intrinsic Options Exercise Price Term Value Outstanding at December 31, 2018 1,578,389 $ 11.32 Granted 279,000 17.89 Exercised ( 116,790 ) 9.00 Forfeited or expired ( 11,600 ) 18.27 Outstanding at December 31, 2019 1,728,999 $ 12.49 5.4 $ 5,960 Exercisable at December 31, 2019 1,296,030 $ 14.57 4.3 $ 5,923 Vested or expected to vest at December 31, 2019 1,728,999 $ 12.49 5.4 $ 5,960
Information Related to Stock Options Exercised	2019 2018 2017 (Dollars in thousands) Proceeds from the exercise of stock options $ 1,052 $ 727 $ 4,283 Intrinsic value of stock options exercised 750 1,590 2,780 Income tax benefit related to stock options exercised 158 334 980
Summary of Stock-Based Compensation Expense	2019 2018 2017 (Dollars in thousands) Compensation expense recorded in Selling, general and administrative expenses $ 1,801 $ 1,528 $ 1,560 Deferred income tax benefits related to compensation expense 378 321 328 Total fair value of stock options vested 1,387 1,390 1,370 Unrecognized compensation cost 1,469 606 587 Expected weighted-average recognition period for unrecognized compensation, in years 2.2 2.7 2.0
Performance Share Units [Member]
Summary of Stock-Based Compensation Activity	Weighted- Average Remaining Number of Contractual Units Term Outstanding at December 31, 2018 526,300 Granted 344,224 Earned ( 406,300 ) Forfeited or expired ( 12,224 ) Outstanding at December 31, 2019 452,000 1.0 Vested or expected to vest at December 31, 2019 452,000 1.0
Summary of Stock-Based Compensation Expense	2019 2018 2017 (Dollars in thousands) Compensation expense recorded in Selling, general and administrative expenses $ 3,607 $ 4,152 $ 6,772 Deferred income tax benefits related to compensation expense 757 872 1,422 Unrecognized compensation cost 2,730 3,599 3,726 Expected weighted-average recognition period for unrecognized compensation, in years 1.6 1.4 1.4

Restructuring And Cost Reduct_2

Restructuring And Cost Reduction Programs (Tables)	12 Months Ended
	Dec. 31, 2019
Restructuring And Cost Reduction Programs [Abstract]
Summary of Charges Associated with Restructuring Programs by Major Type of Charges	Employee Severance Other Costs Total (Dollars in thousands) Expected restructuring charges: Global Optimization Program $ 7,500 76 $ 7,576 Total expected restructuring charges $ 7,500 $ 76 $ 7,576 Restructuring charges incurred: Global Optimization Program $ 3,701 3,256 $ 6,957 Charges incurred in 2017 $ 3,701 $ 3,256 $ 6,957 Global Optimization Program 3,560 3,556 7,116 Charges incurred in 2018 $ 3,560 $ 3,556 $ 7,116 Global Optimization Program 7,163 3,792 10,955 Charges incurred in 2019 $ 7,163 $ 3,792 $ 10,955 Cumulative restructuring charges incurred: Global Optimization Program 44,251 33,062 77,313 Cumulative restructuring charges incurred as of December 31, 2019 $ 44,251 $ 33,062 $ 77,313
Summary of Charges Associated with Restructuring Programs by Segments	Total Cumulative Expected Charges To Charges 2019 2018 2017 Date (Dollars in thousands) Performance Colors and Glass $ 169 $ ( 5 ) $ 23 $ 3,744 $ 26,927 Color Solutions 100 124 148 1,250 4,461 Segment Total 269 119 171 4,994 31,388 Corporate Restructuring Charges 7,307 10,836 6,945 1,963 45,925 Total Restructuring Charges $ 7,576 $ 10,955 $ 7,116 $ 6,957 $ 77,313
Summary Of Accruals Related To Restructuring And Cost Reduction Programs	Employee Severance Other Costs Total (Dollars in thousands) Balance at December 31, 2016 $ 209 $ 1,489 $ 1,698 Restructuring charges $ 3,701 $ 3,256 6,957 Cash payments ( 2,797 ) ( 500 ) ( 3,297 ) Non-cash items 196 ( 3,255 ) ( 3,059 ) Balance at December 31, 2017 $ 1,309 $ 990 $ 2,299 Restructuring charges $ 3,560 $ 3,556 $ 7,116 Cash payments ( 3,678 ) ( 597 ) ( 4,275 ) Non-cash items ( 180 ) ( 3,117 ) ( 3,297 ) Balance at December 31, 2018 $ 1,011 $ 832 $ 1,843 Restructuring charges 7,163 3,792 $ 10,955 Cash payments ( 6,987 ) ( 1,831 ) ( 8,818 ) Non-cash items ( 440 ) ( 1,301 ) ( 1,741 ) Balance at December 31, 2019 $ 747 $ 1,492 $ 2,239

Leases (Tables)

Leases (Tables)	12 Months Ended
	Dec. 31, 2019
Leases [Abstract]
Components of Lease Costs	2019 Income Statement Location (Dollars in thousands) Lease Cost Operating lease cost (1) $ 5,318 Selling, general and administrative expenses Operating lease cost (2) 9,090 Cost of sales Finance lease cost Amortization of right-of-use assets 233 Cost of sales Interest of lease liabilities 17 Interest expense Net lease cost $ 14,658 (1) Included in operating lease cost is $ 0.9 million of short-term lease costs and $ 0.4 million of variable lease costs for the year ended December 31, 2019. (2) Included in operating lease cost is $ 2.6 million of short-term lease costs and $ 1.1 million of variable lease costs for the year ended December 31, 2019.
Supplemental Balance Sheet Information Related to Leases	2019 Balance Sheet Location (Dollars in thousands) Assets Operating leased assets $ 21,684 Operating leased assets Finance leased assets (1) 859 Property, plant and equipment, net Total leased assets $ 22,543 Liabilities Current Operating $ 7,259 Accrued expenses and other current liabilities Finance 438 Loans payable and current portion of long-term debt Noncurrent Operating 15,326 Operating lease non-current liabilities Finance 1,867 Long-term debt, less current portion Total lease liabilities $ 24,890 (1) Finance leases are net of accumulated depreciation of $ 3.4 million for December 31, 2019.
Supplemental Balance Sheet Information Related to Capital Lease Arrangements	2019 (Dollars in thousands) Gross amounts capitalized Buildings $ 3,100 Equipment 1,129 4,229 Accumulated amortization Buildings ( 3,100 ) Equipment ( 270 ) ( 3,370 ) Net assets under capital leases $ 859
Supplemental Cash Flow Information Related to Leases	2019 (Dollars in thousands) Cash paid for amounts included in the measurement of lease liabilities Operating cash flows from finance leases $ 17 Operating cash flows from operating leases 9,757 Financing cash flows from finance leases 229 Leased assets obtained in exchange for new finance lease liabilities 755 Leased assets obtained in exchange for new operating lease liabilities 30,411 2019 Weighted-average remaining lease term (years) Operating leases 4.3 Finance leases 6.2 Weighted-average discount rate Operating leases 4.2 % Finance leases 5.3 %
Maturities of Lease Liabilities	Finance Operating Leases Leases (Dollars in thousands) 2020 $ 531 $ 8,201 2021 478 6,010 2022 469 3,824 2023 442 2,089 2024 348 1,515 Thereafter 697 2,537 Net minimum lease payments $ 2,965 $ 24,176 Less: interest 660 1,591 Present value of lease liabilities $ 2,305 $ 22,585
Maturities of Lease Liabilities under ASC 840	Capital Leases Operating Leases (Dollars in thousands) 2019 $ 399 $ 9,643 2020 331 6,375 2021 279 4,650 2022 279 2,889 2023 279 1,781 Thereafter 976 2,368 Net minimum lease payments $ 2,543 $ 27,706 Less amount representing imputed interest and executory costs 712 Present value of net minimum lease payments 1,831 Less current portion 253 Long-term obligations at December 31, 2018 $ 1,578

Miscellaneous Expense (Income_2

Miscellaneous Expense (Income), Net (Tables)	12 Months Ended
	Dec. 31, 2019
Miscellaneous Expense (Income), Net [Abstract]
Components Of Miscellaneous Expense (Income), Net	2019 2018 2017 (Dollars in thousands) Pension expense (income) $ 14,845 $ 14,142 $ ( 7,474 ) Argentina export tax matter 217 507 ( 3,549 ) Gain on change of control — ( 2,586 ) ( 127 ) Modification of debt — 1,046 — Dividends/royalty from affiliates, net ( 529 ) ( 720 ) ( 993 ) Loss (gain) on sale of assets ( 1,412 ) ( 514 ) 747 Contingent consideration payment (adjustment) ( 2,723 ) ( 1,637 ) 1,721 Bank fees 1,798 1,656 1,646 Other, net ( 474 ) 180 596 Total Miscellaneous expense (income), net $ 11,722 $ 12,074 $ ( 7,433 )

Earnings Per Share (Tables)

Earnings Per Share (Tables)	12 Months Ended
	Dec. 31, 2019
Earnings Per Share [Abstract]
Calculations Of Basic And Diluted Earnings Per Share	2019 2018 2017 (Dollars in thousands, except per share amounts) Basic earnings per share computation: Income from continuing operations $ 35,392 $ 56,920 $ 36,902 Less: Net income attributable to noncontrolling interests from continuing operations 1,087 851 704 Net income attributable to Ferro Corporation from continuing operations 34,305 56,069 36,198 Income (loss) from discontinued operations, net of income taxes ( 27,977 ) 24,026 20,866 Less: Net income attributable to noncontrolling interests from discontinued operations 290 2 10 Net income attributable to Ferro Corporation from discontinued operations ( 28,267 ) 24,024 20,856 Total $ 6,038 $ 80,093 $ 57,054 Weighted-average common shares outstanding 82,083 83,940 83,713 Basic earnings per share from continuing operations attributable to Ferro Corporation common shareholders $ 0.41 $ 0.67 $ 0.43 Diluted earnings per share computation: Net income attributable to Ferro Corporation common shareholders $ 34,305 $ 56,069 $ 36,198 Adjustment for income from discontinued operations ( 28,267 ) 24,024 20,856 Total $ 6,038 $ 80,093 $ 57,054 Weighted-average common shares outstanding 82,083 83,940 83,713 Assumed exercise of stock options 407 772 762 Assumed satisfaction of restricted stock unit conditions 369 301 351 Assumed satisfaction of performance stock unit conditions 32 72 330 Weighted-average diluted shares outstanding 82,891 85,085 85,156 Diluted earnings per share from continuing operations attributable to Ferro Corporation common shareholders $ 0.41 $ 0.66 $ 0.43

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Loss (Tables)	12 Months Ended
	Dec. 31, 2019
Accumulated Other Comprehensive Loss [Abstract]
Changes In Accumulated Other Comprehensive Loss By Component, Net Of Tax	Postretirement Foreign Net Gain (Loss) Benefit Liability Currency on Cash Flow Adjustments Items Hedges Total (Dollars in thousands) Balance at December 31, 2016 $ 1,141 $ ( 107,784 ) $ — $ ( 106,643 ) Other comprehensive income (loss) before reclassifications, before tax — 26,181 2,019 28,200 Reclassification to earnings: Cash flow hedge loss, before tax — — ( 527 ) ( 527 ) Postretirement benefit liabilities gain (loss), before tax 42 — — 42 Current period other comprehensive income (loss), before tax 42 26,181 1,492 27,715 Tax effect 18 ( 4,025 ) 547 ( 3,460 ) Current period other comprehensive income (loss), net of tax 24 30,206 945 31,175 Balance at December 31, 2017 $ 1,165 $ ( 77,578 ) $ 945 $ ( 75,468 ) Other comprehensive income (loss) before reclassifications, before tax — ( 24,658 ) 11,388 ( 13,270 ) Reclassification to earnings: Cash flow hedge loss, before tax — — ( 17,159 ) ( 17,159 ) Postretirement benefit liabilities gain (loss), before tax ( 55 ) — — ( 55 ) Current period other comprehensive income (loss), before tax ( 55 ) ( 24,658 ) ( 5,771 ) ( 30,484 ) Tax effect ( 16 ) 954 ( 1,529 ) ( 591 ) Current period other comprehensive income (loss), net of tax ( 39 ) ( 25,612 ) ( 4,242 ) ( 29,893 ) Balance at December 31, 2018 $ 1,126 $ ( 103,190 ) $ ( 3,297 ) $ ( 105,361 ) Other comprehensive (loss) income before reclassifications, before tax — 6,269 ( 2,731 ) 3,538 Reclassification to earnings: Cash flow hedge loss, before tax — — ( 10,162 ) ( 10,162 ) Postretirement benefit liabilities gain (loss), before tax 91 — — 91 Current period other comprehensive income (loss), before tax 91 6,269 ( 12,893 ) ( 6,533 ) Tax effect 11 654 ( 3,183 ) ( 2,518 ) Current period other comprehensive income (loss), net of tax 80 5,615 ( 9,710 ) ( 4,015 ) Balance at December 31, 2019 $ 1,206 $ ( 97,575 ) $ ( 13,007 ) $ ( 109,376 )

Reporting For Segments (Tables)

Reporting For Segments (Tables)	12 Months Ended
	Dec. 31, 2019
Reporting For Segments [Abstract]
Net Sales To External Customers By Segment	2019 2018 2017 (Dollars in thousands) Performance Colors and Glass $ 648,692 $ 691,196 $ 638,322 Color Solutions 369,674 391,027 358,060 Total net sales $ 1,018,366 $ 1,082,223 $ 996,382
Segment's Gross Profit And Reconciliations To Income Before Income Taxes	2019 2018 2017 (Dollars in thousands) Performance Colors and Glass $ 193,508 $ 212,364 $ 209,147 Color Solutions 114,939 124,852 113,694 Other cost of sales 369 2,519 3,878 Total gross profit 308,816 339,735 326,719 Selling, general and administrative expenses 212,485 219,947 217,290 Restructuring and impairment charges 10,955 7,116 8,523 Other expense, net 41,865 41,622 17,591 Income before income taxes $ 43,511 $ 71,050 $ 83,315
Summary of Segment's Expenditures for Long-Lived Assets	2019 2018 2017 (Dollars in thousands) Performance Colors and Glass $ 46,304 $ 49,964 $ 29,108 Color Solutions 16,597 24,940 20,356 Total segment expenditures for long-lived assets 62,901 74,904 49,464 Unallocated corporate expenditures for long-lived assets 2,069 5,715 1,088 Total expenditures for long lived assets (1) $ 64,970 $ 80,619 $ 50,552 (1) Includes capital expenditures for discontinued operation of $ 10.1 million, $ 5.3 million and $ 4.7 million in 2019, 2018 and 2017, respectively, integrated within Performance Colors and Glass.
Summary of Net Sales by Geographic Region	2019 2018 2017 (Dollars in thousands) United States $ 359,267 $ 379,912 $ 356,483 Germany 149,270 148,706 122,808 Other international 509,829 553,605 517,091 Total net sales $ 1,018,366 $ 1,082,223 $ 996,382
Summary of Long-Lived Assets by Geographic Region	2019 2018 (Dollars in thousands) United States $ 71,617 $ 56,263 Mexico 51,224 32,941 Germany 34,996 35,744 Columbia 32,475 32,587 Other international 109,693 118,004 Total long-lived assets $ 300,005 $ 275,539

Unconsolidated Affiliates Acc_2

Unconsolidated Affiliates Accounted For Under the Equity Method (Tables)	12 Months Ended
	Dec. 31, 2019
Unconsolidated Affiliates Accounted For Under the Equity Method [Abstract]
Summarized Condensed Income Statement	2019 2018 2017 (Dollars in thousands) Net sales $ 16,563 $ 18,950 $ 33,851 Gross profit 2,507 3,343 5,655 Income (loss) from continuing operations ( 861 ) 746 ( 224 ) Net income (loss) ( 689 ) 596 ( 220 )
Summarized Balance Sheet	2019 2018 (Dollars in thousands) Current assets $ 13,623 $ 17,305 Non-current assets 4,214 3,356 Current liabilities ( 2,994 ) ( 3,832 ) Non-current liabilities ( 161 ) ( 339 )
Transactions with Equity-Method Investees	2019 2018 2017 (Dollars in thousands) Sales $ 7,308 $ 4,898 $ 5,378 Purchases 316 15 2,006 Dividends and interest received 154 415 920 Commission and royalties received 363 305 130 Commissions and royalties paid 11 — 57

Quarterly Data (Tables)

Quarterly Data (Tables)	12 Months Ended
	Dec. 31, 2019
Quarterly Data [Abstract]
Summary of Quarterly Financial Information	Net Income Earnings (Loss) Attributable (Loss) to Ferro Corporation Common Attributable Shareholders Per Common Net Income to Ferro Share Net Sales Gross Profit (Loss) Corporation Basic Diluted (Dollars in thousands, except per share data) 2018 Quarter 1 $ 274,448 $ 88,740 $ 23,598 $ 23,391 $ 0.28 $ 0.27 Quarter 2 273,544 90,793 29,861 29,668 0.35 0.35 Quarter 3 267,739 79,732 16,143 16,058 0.19 0.19 Quarter 4 266,492 80,470 11,344 10,976 0.13 0.13 Total $ 1,082,223 $ 339,735 $ 80,946 $ 80,093 $ 0.95 $ 0.94 2019 Quarter 1 $ 264,240 $ 78,012 $ 13,878 $ 13,604 $ 0.16 $ 0.16 Quarter 2 261,978 79,343 11,109 10,871 0.13 0.13 Quarter 3 246,291 76,186 13,210 12,820 0.16 0.16 Quarter 4 245,857 75,275 ( 30,782 ) ( 31,257 ) ( 0.38 ) ( 0.38 ) Total $ 1,018,366 $ 308,816 $ 7,415 $ 6,038 $ 0.07 $ 0.07

Our Business (Details)

Our Business (Details)	12 Months Ended
	Dec. 31, 2019segment
Significant Accounting Policies [Abstract]
Business units	4

Significant Accounting Polici_4

Significant Accounting Policies (Narrative) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2019USD ($)entitycustomer	Dec. 31, 2018USD ($)	Dec. 31, 2017USD ($)	Jan. 01, 2019USD ($)
Significant Accounting Policies [Line Items]
Number of legal entities consolidated | entity	5
Expenditures for company-sponsored research and development activities	$ 41	$ 40.1	$ 36.2
Number of customers representing greater than 10% of net sales or accounts receivable | customer	0
Percentage of net sales or accounts receivable to be considered a major customer	10.00%
Accounting Standards Update 2016-02 [Member]
Significant Accounting Policies [Line Items]
Impact of adoption of ASU on consolidated balance sheet				$ 28.6
Minimum [Member] | Software and Software Development Costs [Member]
Significant Accounting Policies [Line Items]
Property, plant and equipment, useful lives	1 year
Minimum [Member] | Five Entities [Member]
Significant Accounting Policies [Line Items]
Non-controlling interest ownerships in consolidated entities	5.00%
Maximum [Member] | Software and Software Development Costs [Member]
Significant Accounting Policies [Line Items]
Property, plant and equipment, useful lives	10 years
Maximum [Member] | Five Entities [Member]
Significant Accounting Policies [Line Items]
Non-controlling interest ownerships in consolidated entities	41.00%

Significant Accounting Polici_5

Significant Accounting Policies (Detailed Information about Allowance for Doubtful Accounts) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Significant Accounting Policies [Abstract]
Allowance for doubtful accounts	$ 1,756	$ 1,343	$ 2,490
Bad debt expense	$ 808	$ 511	$ 35

Significant Accounting Polici_6

Significant Accounting Policies (Estimated Lives of Prperty, Plant and Equipment) (Details)	12 Months Ended
	Dec. 31, 2019
Minimum [Member] | Building [Member]
Property Plant And Equipment [Line Items]
Property, Plant and Equipment, Useful Life	20 years
Minimum [Member] | Machinery and Equipment [Member]
Property Plant And Equipment [Line Items]
Property, Plant and Equipment, Useful Life	5 years
Maximum [Member] | Building [Member]
Property Plant And Equipment [Line Items]
Property, Plant and Equipment, Useful Life	40 years
Maximum [Member] | Machinery and Equipment [Member]
Property Plant And Equipment [Line Items]
Property, Plant and Equipment, Useful Life	15 years

Revenue (Revenues Disaggregated

Revenue (Revenues Disaggregated By Geography And Reportable Segment) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Disaggregation of Revenue [Line Items]
Total net sales	$ 1,018,366	$ 1,082,223	$ 996,382
Performance Colors And Glass [Member]
Disaggregation of Revenue [Line Items]
Total net sales	648,692	691,196	638,322
Color Solutions [Member]
Disaggregation of Revenue [Line Items]
Total net sales	369,674	391,027	358,060
EMEA [Member]
Disaggregation of Revenue [Line Items]
Total net sales	435,131	470,401	419,101
EMEA [Member] | Performance Colors And Glass [Member]
Disaggregation of Revenue [Line Items]
Total net sales	298,197	328,299	284,979
EMEA [Member] | Color Solutions [Member]
Disaggregation of Revenue [Line Items]
Total net sales	136,934	142,102	134,122
United States [Member]
Disaggregation of Revenue [Line Items]
Total net sales	359,267	379,913	356,483
United States [Member] | Performance Colors And Glass [Member]
Disaggregation of Revenue [Line Items]
Total net sales	197,494	207,012	201,753
United States [Member] | Color Solutions [Member]
Disaggregation of Revenue [Line Items]
Total net sales	161,773	172,901	154,730
Asia Pacific [Member]
Disaggregation of Revenue [Line Items]
Total net sales	139,916	145,291	132,025
Asia Pacific [Member] | Performance Colors And Glass [Member]
Disaggregation of Revenue [Line Items]
Total net sales	102,431	103,649	95,682
Asia Pacific [Member] | Color Solutions [Member]
Disaggregation of Revenue [Line Items]
Total net sales	37,485	41,642	36,343
Latin America [Member]
Disaggregation of Revenue [Line Items]
Total net sales	84,052	86,618	88,773
Latin America [Member] | Performance Colors And Glass [Member]
Disaggregation of Revenue [Line Items]
Total net sales	50,570	52,236	55,908
Latin America [Member] | Color Solutions [Member]
Disaggregation of Revenue [Line Items]
Total net sales	$ 33,482	$ 34,382	$ 32,865

Discontinued Operations (Summar

Discontinued Operations (Summary Of Statements Of Operations As Discontinued Operations) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Income (loss) from discontinued operations, net of income taxes	$ (27,977)	$ 24,026	$ 20,866
Less: Net income attributable to noncontrolling interests	1,377	853	714
Net income (loss) attributable to Tile Coatings business	6,038	80,093	57,054
Discontinued Operations [Member] | Tile Coatings [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Net sales	487,584	530,185	400,360
Cost of sales	385,890	413,987	310,858
Gross profit	101,694	116,198	89,502
Selling, general and administrative expenses	71,471	58,619	48,128
Restructuring and impairment charges	44,378	6,179	2,886
Interest expense	11,556	12,835	9,293
Interest earned	(122)	(125)	(119)
Foreign currency losses (gains), net	(2,397)	1,852	3,114
Miscellaneous expense (income), net	2,127	3,896	(1,003)
Income (loss) from discontinued operations before income taxes	(25,319)	32,942	27,203
Income tax expense	2,658	8,916	6,337
Income (loss) from discontinued operations, net of income taxes	(27,977)	24,026	20,866
Less: Net income attributable to noncontrolling interests	290	2	10
Net income (loss) attributable to Tile Coatings business	$ (28,267)	$ 24,024	$ 20,856

Discontinued Operations (Summ_2

Discontinued Operations (Summary Of Assets And Liabilities As Discontinued Operations) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash and cash equivalents	$ 8,200	$ 8,200
Current assets held-for-sale	294,803	298,205
Deferred income taxes	98,714	88,526
Non-current assets held-for-sale	158,999	209,571
Current liabilities held-for-sale	133,006	158,182
Non-current liabilities held-for-sale	37,489	64,483
Tile Coatings [Member] | Discontinued Operations, Held-for-sale [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash and cash equivalents	8,200	8,200
Accounts receivable, net	160,174	151,975
Inventories	100,981	111,227
Other receivables	22,442	23,989
Other current assets	3,006	2,814
Current assets held-for-sale	294,803	298,205
Property, plant and equipment, net	99,429	105,802
Goodwill	3	43,511
Amortizable intangible assets, net	39,687	42,990
Deferred income taxes	14,425	14,962
Other non-current assets	5,455	2,306
Non-current assets held-for-sale	158,999	209,571
Total assets held-for-sale	453,802	507,776
Loans payable and current portion of long-term debt	3,678	5,838
Accounts payable	96,967	123,820
Accrued payrolls	4,838	3,396
Accrued expenses and other current liabilities	27,523	25,128
Current liabilities held-for-sale	133,006	158,182
Long-term debt, less current portion	25,805	54,173
Postretirement and pension liabilities	7,473	6,365
Other non-current liabilities	4,211	3,945
Non-current liabilities held-for-sale	37,489	64,483
Total liabilities held-for-sale	$ 170,495	$ 222,665

Discontinued Operations (Summ_3

Discontinued Operations (Summary Of Cash Flow Data Related To Discontinued Operations) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Non-cash investing activities - capital expenditures, consisting of of unpaid capital expenditure liabilities at year end	$ 3,500	$ 7,700	$ 8,400
Tile Coatings [Member] | Discontinued Operations, Held-for-sale [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Depreciation	11,264	10,778	10,080
Amortization of intangible assets	3,192	3,219	3,019
Capital expenditure	(10,126)	(5,265)	(4,656)
Non-cash operating activities - fixed asset impairment			1,243
Non-cash operating activities - goodwill impairment	42,515
Non-cash operating activities - restructuring	127		1,868
Non-cash investing activities - capital expenditures, consisting of of unpaid capital expenditure liabilities at year end	$ 1,096	$ 5,872	$ 448

Aquisitions (Narrative) (Detail

Aquisitions (Narrative) (Details) $ in Thousands, € in Millions, $ in Millions	Oct. 01, 2018EUR (€)	Oct. 01, 2018USD ($)	Sep. 25, 2018USD ($)	Sep. 25, 2018TWD ($)	Aug. 31, 2018EUR (€)	Aug. 31, 2018USD ($)	Jul. 12, 2018USD ($)	Jun. 29, 2018USD ($)	Mar. 01, 2018USD ($)	Nov. 01, 2017EUR (€)	Nov. 01, 2017USD ($)	Aug. 03, 2017USD ($)	Aug. 02, 2017USD ($)	Apr. 24, 2017EUR (€)	Apr. 24, 2017USD ($)	Sep. 30, 2019USD ($)	Jun. 30, 2019USD ($)	Dec. 31, 2019USD ($)	Dec. 31, 2018USD ($)	Dec. 31, 2017USD ($)	Oct. 01, 2018USD ($)	Nov. 01, 2017USD ($)	Apr. 24, 2017USD ($)
Business Acquisition [Line Items]
Equity method investment, realized gain (loss) on disposal																			$ 2,586	$ 127
Acquired intangible asset amortization costs																		$ 13,000	12,600	10,100
Research and development costs																		41,000	40,100	36,200
Goodwill																		172,209	172,953	157,469
Deferred tax assets																		98,714	88,526
Deferred tax liabilities																		14,866	$ 18,606
Quimicer, S.A. ("Quimicer") [Member]
Business Acquisition [Line Items]
Business acquisition, percentage of voting interests acquired	100.00%																				100.00%
Business acquisition	€ 32.2	$ 37,400
Business Combination, Liabilities Arising from Contingencies, Amount Recognized	€ 5.2																				$ 6,100
Goodwill																					3,000
Goodwill impairment charge																$ 3,000
Personal and real property																					21,500
Deferred tax liabilities																					3,000
Net working capital																					$ 15,900
UWiZ Technology Co., Ltd. ("UWiZ") [Member]
Business Acquisition [Line Items]
Business acquisition, percentage of voting interests acquired			100.00%
Cash payments to acquire business			$ 26,900	$ 823.4
Amortizable intangible assets			6,600
Goodwill			7,100
Personal and real property			2,400
Deferred tax liabilities			1,700
Net working capital			$ 12,500
Ernst Diegel GmbH ("Diegel") [Member]
Business Acquisition [Line Items]
Business acquisition, percentage of voting interests acquired						100.00%
Cash payments to acquire business					€ 12.1	$ 14,000
Amortizable intangible assets						2,000
Goodwill						1,700
Personal and real property						7,000
Deferred tax liabilities						1,500
Net working capital						$ 4,800
MRA Laboratories, Inc. ("MRA") [Member]
Business Acquisition [Line Items]
Business acquisition, percentage of voting interests acquired							100.00%
Cash payments to acquire business							$ 16,000
Amortizable intangible assets							6,700
Goodwill							7,200
Personal and real property							300
Deferred tax liabilities							1,600
Net working capital							$ 3,400
PT Ferro Materials Utama ("FMU") [Member]
Business Acquisition [Line Items]
Business acquisition, percentage of voting interests acquired								66.00%											66.00%
Equity method investment, realized gain (loss) on disposal																	$ 2,600		$ (2,600)
Cash payments to acquire business								$ 2,700
Forgiveness of debt								$ 9,200
Endeka Group (“Endeka”) [Member]
Business Acquisition [Line Items]
Business acquisition, percentage of voting interests acquired										100.00%												100.00%
Business acquisition										€ 72.8	$ 84,800
Acquisition costs																			500	2,500
Decrease in carrying amount of personal and real property																			5,900
Personal and real property																		15,900
Deferred tax assets																		25,900
Debt										€ 13.1												$ 15,300
Net working capital																		44,100
Noncontrolling interest																			1,100
Gardenia Quimica S.A. (“Gardenia”) [Member]
Business Acquisition [Line Items]
Business acquisition									$ 1,400			$ 3,000
Equity method investment, ownership percentage												83.50%	46.00%
Equity method investment, realized gain (loss) on disposal												$ 2,600								(2,600)
Dip Tech Ltd. (“Dip-Tech”) [Member]
Business Acquisition [Line Items]
Business acquisition, percentage of voting interests acquired													100.00%
Business acquisition													$ 77,000
Cash payments to acquire business													60,100
Business Combination, Contingent Consideration, Liability													$ 16,900
Acquisition costs																			100	$ 3,200
Amortizable intangible assets																		41,200
Goodwill																		33,500
Acquired indefinite-lived intangible assets																		5,100
Personal and real property																		3,200
Deferred tax liabilities																		7,200
Net working capital																		1,200
S.P.C. Group s.r.l. [Member]
Business Acquisition [Line Items]
Business acquisition, percentage of voting interests acquired														100.00%									100.00%
Smalti per Ceramiche, s.r.l. (together “SPC”) [Member]
Business Acquisition [Line Items]
Business acquisition, percentage of voting interests acquired														100.00%									100.00%
Business acquisition														€ 18.7	$ 20,300
Acquisition costs																			$ 1,500
Amortizable intangible assets																		6,000
Goodwill																		5,200
Personal and real property																		6,100
Deferred tax liabilities																		2,000
Debt														€ 5.7									$ 6,200
Net working capital																		$ 5,000
PT Ferro Materials Utama ("FMU") [Member]
Business Acquisition [Line Items]
Total ownership								100.00%											100.00%

Inventories (Narrative) (Detail

Inventories (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Inventories [Abstract]
Terms of precious metals consignment agreements, maximum	1 year
Fees under precious metals consignment agreements	$ 3.1	$ 2.1	$ 1.2
Fair value of precious metals on hand under consignment agreements	$ 66.2	$ 55.2

Inventories (Inventories) (Deta

Inventories (Inventories) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Inventories [Abstract]
Raw materials	$ 80,265	$ 77,836
Work in process	49,717	42,093
Finished goods	134,640	125,842
Total inventories	$ 264,622	$ 245,771

Property, Plant And Equipment_2

Property, Plant And Equipment (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Property, Plant and Equipment [Line Items]
Depreciation expense	$ 28.3	$ 27.3	$ 26.8
Unpaid capital expenditure liabilities	3.5	7.7	8.4
Discontinued Operations [Member]
Property, Plant and Equipment [Line Items]
Depreciation expense	$ 11.3	$ 10.8	$ 10.1

Property, Plant And Equipment_3

Property, Plant And Equipment (Property, Plant And Equipment) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Property Plant And Equipment [Line Items]
Total property, plant and equipment	$ 707,673	$ 660,798
Total accumulated depreciation	(407,668)	(385,259)
Property, plant and equipment, net	300,005	275,539
Land [Member]
Property Plant And Equipment [Line Items]
Total property, plant and equipment	35,564	36,460
Building [Member]
Property Plant And Equipment [Line Items]
Total property, plant and equipment	152,586	152,221
Machinery and Equipment [Member]
Property Plant And Equipment [Line Items]
Total property, plant and equipment	427,081	401,038
Construction in Progress [Member]
Property Plant And Equipment [Line Items]
Total property, plant and equipment	$ 92,442	$ 71,079

Goodwill And Other Intangible_3

Goodwill And Other Intangible Assets (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended			12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Goodwill And Other Intangible Asset [Line Items]
Amortization expense related to amortizable intangible assets				$ 13	$ 12.6	$ 10.1
Expected aggregate amortization expense 2020	$ 12.4			12.4
Expected aggregate amortization expense 2021	11.2			11.2
Expected aggregate amortization expense 2022	11			11
Expected aggregate amortization expense 2023	10.8			10.8
Expected aggregate amortization expense 2024	10.8			10.8
Quimicer, FMU And Gardenia [Member]
Goodwill And Other Intangible Asset [Line Items]
Goodwill impairment charge		$ 3.1	$ 5.9
Tile Coating Systems [Member]
Goodwill And Other Intangible Asset [Line Items]
Goodwill					$ 43.5
Goodwill impairment charge	$ 33.5
Tile Coating Systems [Member] | Performance Coatings [Member]
Goodwill And Other Intangible Asset [Line Items]
Goodwill impairment charge				$ 42.5

Goodwill And Other Intangible_4

Goodwill And Other Intangible Assets (Details and Activity of Goodwill by Segment) (Details) - USD ($) $ in Thousands		3 Months Ended	12 Months Ended
		Dec. 31, 2019	Dec. 31, 2019	Dec. 31, 2018
Acquired Finite-Lived Intangible Assets [Line Items]
Goodwill net, beginning balance			$ 172,953	$ 157,469
Acquisitions	[1]			17,387
Foreign currency adjustment			(744)	(1,903)
Goodwill net, ending balance		$ 172,209	172,209	172,953
Performance Colors And Glass [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Goodwill net, beginning balance			122,408	114,934
Acquisitions	[1]			8,530
Foreign currency adjustment			(506)	(1,056)
Goodwill net, ending balance		121,902	121,902	122,408
Color Solutions [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Goodwill net, beginning balance			50,545	42,535
Acquisitions	[1]			8,857
Foreign currency adjustment			(238)	(847)
Goodwill net, ending balance		50,307	$ 50,307	$ 50,545
Tile Coating Systems [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Impairments		$ 33,500
[1]	During 2018, the Company recorded: 1) goodwill related to the UWiZ and Diegel acquisitions within the Color Solutions segment and 2) goodwill related to the MRA acquisition and a purchase price adjustment within the measurement period for goodwill related to the Dip-Tech acquisition within the Performance Colors and Glass segment.

Goodwill And Other Intangible_5

Goodwill And Other Intangible Assets (Schedule Of Impairment Of Goodwill) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Goodwill And Other Intangible Assets [Abstract]
Goodwill, gross	$ 230,676	$ 231,420
Accumulated impairment loss	(58,467)	(58,467)
Goodwill, net	$ 172,209	$ 172,953	$ 157,469

Goodwill And Other Intangible_6

Goodwill And Other Intangible Assets (Significant Assumptions and Ranges of Assumptions Used in Impairment Analysis of Goodwill) (Details)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Schedule Of Impaired Intangible Assets And Goodwill [Line Items]
Residual growth rate	3.00%	3.00%
Minimum [Member]
Schedule Of Impaired Intangible Assets And Goodwill [Line Items]
Weighted-average cost of capital	11.50%	13.00%
Maximum [Member]
Schedule Of Impaired Intangible Assets And Goodwill [Line Items]
Weighted-average cost of capital	12.00%	14.75%

Goodwill And Other Intangible_7

Goodwill And Other Intangible Assets (Details of Amortizable Intangible Assets) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Amortization Of Intangible Assets [Line Items]
Total gross amortizable intangible assets	$ 196,955	$ 189,395
Total accumulated amortization	(81,817)	(60,245)
Amortizable intangible assets, net	115,138	129,150
Patents [Member]
Amortization Of Intangible Assets [Line Items]
Total gross amortizable intangible assets	5,434	5,462
Total accumulated amortization	(5,413)	(5,441)
Land Rights [Member]
Amortization Of Intangible Assets [Line Items]
Total gross amortizable intangible assets	2,979	3,015
Total accumulated amortization	(1,452)	(1,389)
Technology/Know-how And Other [Member]
Amortization Of Intangible Assets [Line Items]
Total gross amortizable intangible assets	122,088	112,734
Total accumulated amortization	(60,121)	(42,337)
Customer Relationships [Member]
Amortization Of Intangible Assets [Line Items]
Total gross amortizable intangible assets	66,454	68,184
Total accumulated amortization	$ (14,831)	$ (11,078)
Minimum [Member] | Patents [Member]
Amortization Of Intangible Assets [Line Items]
Estimated Economic Life	10 years
Minimum [Member] | Land Rights [Member]
Amortization Of Intangible Assets [Line Items]
Estimated Economic Life	20 years
Minimum [Member] | Technology/Know-how And Other [Member]
Amortization Of Intangible Assets [Line Items]
Estimated Economic Life	1 year
Minimum [Member] | Customer Relationships [Member]
Amortization Of Intangible Assets [Line Items]
Estimated Economic Life	10 years
Maximum [Member] | Patents [Member]
Amortization Of Intangible Assets [Line Items]
Estimated Economic Life	16 years
Maximum [Member] | Land Rights [Member]
Amortization Of Intangible Assets [Line Items]
Estimated Economic Life	40 years
Maximum [Member] | Technology/Know-how And Other [Member]
Amortization Of Intangible Assets [Line Items]
Estimated Economic Life	30 years
Maximum [Member] | Customer Relationships [Member]
Amortization Of Intangible Assets [Line Items]
Estimated Economic Life	20 years

Goodwill And Other Intangible_8

Goodwill And Other Intangible Assets (Schedule of Indefinite-Lived Intangible Assets) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Trade Names and Trademarks [Member]
Indefinite-lived Intangible Assets [Line Items]
Indefinite-lived intangible assets	$ 12,682	$ 12,813

Debt And Other Financing (Narra

Debt And Other Financing (Narrative) (Details)

Aug. 29, 2016USD ($)

Jan. 25, 2016USD ($)

Dec. 31, 2019USD ($)

Dec. 31, 2018USD ($)

Dec. 31, 2017USD ($)

Dec. 31, 2019EUR (€)

Dec. 31, 2019USD ($)

Jun. 30, 2018EUR (€)

Jun. 30, 2018USD ($)

Apr. 25, 2018USD ($)

Dec. 31, 2017EUR (€)

Dec. 31, 2017USD ($)

Feb. 14, 2017EUR (€)

Feb. 14, 2017USD ($)

Debt Instrument [Line Items]

Long-term debt

$ 814,952,000

$ 807,565,000

Other Financing Arrangements [Member]

Debt Instrument [Line Items]

Maximum available in form of cash or letters of credit

31,400,000

28,100,000

Additional borrowings available

26,600,000

25,000,000

International Receivable Sales Programs [Member]

Debt Instrument [Line Items]

Debt amount issued | €

€ 100,000,000

Maturity date

Dec. 31, 2023

Outstanding principal amount

10,900,000

19,300,000

Pecentage of cash receivable of sold receivable

65.00%

Other receivables

1,800,000

$ 6,600,000

2014 Credit Facility [Member]

Debt Instrument [Line Items]

Write off of unamortized issuance costs

$ 3,900,000

Revolving credit facility [Member]

Debt Instrument [Line Items]

Write off of unamortized issuance costs

3,200,000

Revolving credit facility [Member] | London Interbank Offered Rate (LIBOR) [Member]

Debt Instrument [Line Items]

Debt instrument, basis spread on variable rate

1.00%

Revolving credit facility [Member] | London Interbank Offered Rate (LIBOR) [Member] | Minimum [Member]

Debt Instrument [Line Items]

Debt instrument, basis spread on variable rate

0.00%

Applicable margin percentage

1.75%

1.75%

Revolving credit facility [Member] | London Interbank Offered Rate (LIBOR) [Member] | Maximum [Member]

Debt Instrument [Line Items]

Applicable margin percentage

2.75%

2.75%

Revolving credit facility [Member] | Base Rate [Member] | Minimum [Member]

Debt Instrument [Line Items]

Applicable margin percentage

0.75%

0.75%

Revolving credit facility [Member] | Base Rate [Member] | Maximum [Member]

Debt Instrument [Line Items]

Applicable margin percentage

1.75%

1.75%

Revolving credit facility [Member] | Federal Funds Effective Swap Rate [Member]

Debt Instrument [Line Items]

Debt instrument, basis spread on variable rate

0.50%

Amended Credit Facility [Member] | Maximum [Member]

Debt Instrument [Line Items]

Additional commitments under the revolving line of credit or term loans

$ 250,000,000

Amended Credit Facility [Member] | Secured Term Loan Facility [Member] | London Interbank Offered Rate (LIBOR) [Member]

Debt Instrument [Line Items]

Applicable margin percentage

2.25%

2.25%

Amended Credit Facility [Member] | Secured Term Loan Facility [Member] | London Interbank Offered Rate (LIBOR) [Member] | Minimum [Member]

Debt Instrument [Line Items]

Debt instrument, basis spread on variable rate

0.00%

Amended Credit Facility [Member] | Secured Term Loan Facility [Member] | London Interbank Offered Rate (LIBOR) [Member] | Maximum [Member]

Debt Instrument [Line Items]

Debt instrument, basis spread on variable rate

1.00%

Amended Credit Facility [Member] | Secured Term Loan Facility [Member] | Base Rate [Member]

Debt Instrument [Line Items]

Applicable margin percentage

1.25%

1.25%

Amended Credit Facility [Member] | Secured Term Loan Facility [Member] | Federal Funds Effective Swap Rate [Member]

Debt Instrument [Line Items]

Debt instrument, basis spread on variable rate

0.50%

2018 Revolving Credit Facility [Member] | London Interbank Offered Rate (LIBOR) [Member]

Debt Instrument [Line Items]

Debt instrument, basis spread on variable rate

0.00%

2018 Revolving Credit Facility [Member] | London Interbank Offered Rate (LIBOR) [Member] | Minimum [Member]

Debt Instrument [Line Items]

Debt instrument, basis spread on variable rate

0.00%

Applicable margin percentage

1.50%

1.50%

2018 Revolving Credit Facility [Member] | London Interbank Offered Rate (LIBOR) [Member] | Maximum [Member]

Debt Instrument [Line Items]

Debt instrument, basis spread on variable rate

1.00%

Applicable margin percentage

2.50%

2.50%

2018 Revolving Credit Facility [Member] | Base Rate [Member] | Minimum [Member]

Debt Instrument [Line Items]

Applicable margin percentage

0.50%

0.50%

2018 Revolving Credit Facility [Member] | Base Rate [Member] | Maximum [Member]

Debt Instrument [Line Items]

Applicable margin percentage

1.50%

1.50%

2018 Revolving Credit Facility [Member] | Federal Funds Effective Swap Rate [Member]

Debt Instrument [Line Items]

Debt instrument, basis spread on variable rate

0.50%

Credit Facility [Member]

Debt Instrument [Line Items]

Equal quarterly installments in an amount equal to percentage of the original principal amount of the term loans

0.25%

Credit Facility [Member] | Maximum [Member]

Debt Instrument [Line Items]

Additional commitments under the revolving line of credit or term loans

$ 250,000,000

Secured Debt [Member] | 2014 Credit Facility [Member]

Debt Instrument [Line Items]

Debt facility amount

$ 300,000,000

$ 400,000,000

Term of debt instrument/credit facility

7 years

5 years

Secured Debt [Member] | Revolving credit facility [Member]

Debt Instrument [Line Items]

Debt stated interest rate

3.63%

3.63%

Borrowings under revolving line of credit

$ 78,000,000

Additional borrowings available

317,300,000

Secured Debt [Member] | Amended Credit Facility [Member]

Debt Instrument [Line Items]

Debt facility amount

$ 500,000,000

Maturity date

Feb. 14, 2023

Secured Debt [Member] | Amended Credit Facility [Member] | Secured Term Loan Facility $355 Million [Member]

Debt Instrument [Line Items]

Debt amount issued

355,000,000

Maturity date

Feb. 14, 2024

Secured Debt [Member] | Amended Credit Facility [Member] | Secured Term Loan Facility $235 Million [Member]

Debt Instrument [Line Items]

Debt amount issued

235,000,000

Maturity date

Feb. 14, 2024

Secured Debt [Member] | Amended Credit Facility [Member] | Secured Term Loan Facility $230 Million [Member]

Debt Instrument [Line Items]

Debt amount issued

$ 230,000,000

Maturity date

Feb. 14, 2024

Secured Debt [Member] | Amended Credit Facility [Member] | Tranche B-1 Loans [Member]

Debt Instrument [Line Items]

Debt facility amount

$ 352,300,000

$ 348,800,000

Debt stated interest rate

5.05%

4.19%

4.19%

Secured Debt [Member] | Amended Credit Facility [Member] | Tranche B-1 Loans [Member] | Interest Rate Swap [Member]

Debt Instrument [Line Items]

Debt stated interest rate

5.19%

5.10%

5.10%

Secured Debt [Member] | Amended Credit Facility [Member] | Tranche B-2 Loans [Member]

Debt Instrument [Line Items]

Debt facility amount

$ 233,200,000

$ 230,900,000

Debt stated interest rate

5.05%

4.19%

4.19%

Secured Debt [Member] | Amended Credit Facility [Member] | Tranche B-2 Loans [Member] | Interest Rate Swap [Member]

Debt Instrument [Line Items]

Debt stated interest rate

3.43%

2.96%

2.96%

Secured Debt [Member] | Amended Credit Facility [Member] | Tranche B-3 Loans [Member]

Debt Instrument [Line Items]

Debt facility amount

$ 228,300,000

$ 226,000,000

Debt stated interest rate

5.05%

4.19%

4.19%

Secured Debt [Member] | Amended Credit Facility [Member] | Tranche B-3 Loans [Member] | Interest Rate Swap [Member]

Debt Instrument [Line Items]

Debt stated interest rate

2.48%

2.48%

2.48%

Secured Debt [Member] | Amended Credit Facility [Member] | Tranche B-1, B-2, And B-3 [Member]

Debt Instrument [Line Items]

Additional borrowings available

$ 0

Secured Debt [Member] | 2018 Revolving Credit Facility [Member]

Debt Instrument [Line Items]

Debt amount issued

0

Additional borrowings available

$ 495,800,000

Secured Debt [Member] | Credit Facility [Member]

Debt Instrument [Line Items]

Term of debt instrument/credit facility

5 years

Debt amount issued

$ 400,000,000

Secured Term Loan [Member]

Debt Instrument [Line Items]

Long-term debt

$ 354,800,000

Applicable margin percentage

4.07%

4.07%

Secured Term Loan [Member] | Interest Rate Swap [Member]

Debt Instrument [Line Items]

Debt amount issued

$ 150,000,000

$ 150,000,000

Applicable margin percentage

4.27%

4.27%

Secured Term Loan [Member] | London Interbank Offered Rate (LIBOR) [Member]

Debt Instrument [Line Items]

Debt instrument, basis spread on variable rate

1.00%

Applicable margin percentage

2.50%

2.50%

Secured Term Loan [Member] | London Interbank Offered Rate (LIBOR) [Member] | Minimum [Member]

Debt Instrument [Line Items]

Debt instrument, basis spread on variable rate

0.75%

Secured Term Loan [Member] | Base Rate [Member]

Debt Instrument [Line Items]

Debt instrument, basis spread on variable rate

1.50%

Secured Term Loan [Member] | Federal Funds Effective Swap Rate [Member]

Debt Instrument [Line Items]

Debt instrument, basis spread on variable rate

0.50%

Secured Term Loan [Member] | EURIBOR [Member]

Debt Instrument [Line Items]

Applicable margin percentage

2.75%

2.75%

Secured Term Loan [Member] | Amended Credit Facility [Member]

Debt Instrument [Line Items]

Equal quarterly installments in an amount equal to percentage of the original principal amount of the term loans

0.25%

Secured Term Loan [Member] | Credit Facility [Member]

Debt Instrument [Line Items]

Term of debt instrument/credit facility

7 years

Debt amount issued

$ 357,500,000

Secured Euro Term Loan [Member]

Debt Instrument [Line Items]

Long-term debt

€ 248,100,000

$ 297,900,000

Applicable margin percentage

2.75%

2.75%

Secured Euro Term Loan [Member] | Interest Rate Swap [Member]

Debt Instrument [Line Items]

Debt amount issued | €

€ 90,000,000

€ 90,000,000

Applicable margin percentage

3.00%

3.00%

Secured Euro Term Loan [Member] | EURIBOR [Member]

Debt Instrument [Line Items]

Debt instrument, basis spread on variable rate

0.00%

Secured Euro Term Loan [Member] | Credit Facility [Member]

Debt Instrument [Line Items]

Term of debt instrument/credit facility

7 years

Debt amount issued | €

€ 250,000,000

U.S. Subsidiaries [Member] | Credit Facility [Member]

Debt Instrument [Line Items]

Stock pledged as collateral, percentage

100.00%

U.S. Subsidiaries [Member] | Secured Debt [Member] | Amended Credit Facility [Member]

Debt Instrument [Line Items]

Stock pledged as collateral, percentage

100.00%

Foreign Subsidiaries [Member] | Credit Facility [Member]

Debt Instrument [Line Items]

Stock pledged as collateral, percentage

65.00%

Foreign Subsidiaries [Member] | Secured Debt [Member] | Amended Credit Facility [Member]

Debt Instrument [Line Items]

Stock pledged as collateral, percentage

65.00%

Tile Coating Systems [Member] | International Receivable Sales Programs [Member]

Debt Instrument [Line Items]

Outstanding principal amount

$ 60,400,000

$ 52,600,000

Other receivables

$ 21,200,000

$ 20,500,000

Debt And Other Financing (Loans

Debt And Other Financing (Loans Payable And Current Portion of Long-Term Debt) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Short-term Debt [Line Items]
Loans payable and current portion of long-term debt	$ 8,703	$ 8,921
Loans Payable [Member]
Short-term Debt [Line Items]
Loans payable and current portion of long-term debt		50
Current Portion Of Long-Term Debt [Member]
Short-term Debt [Line Items]
Loans payable and current portion of long-term debt	$ 8,703	$ 8,871

Debt And Other Financing (Summa

Debt And Other Financing (Summary Of Long-Term Debt) (Details) - USD ($) $ in Thousands		Dec. 31, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
Total long-term debt		$ 807,565	$ 814,952
Current portion of long-term debt		(8,703)	(8,871)
Long-term debt, less current portion		798,862	806,081
Unamortized debt issuance costs		3,886
Term Loan Facility, Net Of Unamortized Issuance Costs, Maturing 2024 [Member]
Debt Instrument [Line Items]
Total long-term debt	[1]	801,764	809,022
Unamortized debt issuance costs		3,900	4,800
Capital lease obligations [Member]
Debt Instrument [Line Items]
Total long-term debt		2,305	1,832
Other notes [Member]
Debt Instrument [Line Items]
Total long-term debt		$ 3,496	$ 4,098
[1]	The carrying value of the term loan facility, maturing 2024, is net of unamortized debt issuance costs of $ 3.9 million at December 31, 2019 and $ 4.8 million at December 31, 2018.

Debt And Other Financing (Annua

Debt And Other Financing (Annual Maturities Of Long-term Debt) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Debt And Other Financing [Abstract]
2020	$ 8,938
2021	8,819
2022	8,810
2023	8,719
2024	773,275
Thereafter	3,550
Total maturities of long-term debt	812,111
Unamortized debt issuance costs on Term loan facility	(3,886)
Imputed interest and executory costs on capitalized lease obligations	(660)
Total long-term debt	$ 807,565	$ 814,952

Debt And Other Financing (Sched

Debt And Other Financing (Schedule Of Trade Accounts Receivable In International Receivable Sales Programs) (Details) - USD ($) $ in Thousands		Dec. 31, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
Trade accounts receivable sold to financial institutions		$ 59,293	$ 13,788
Cash proceeds from financial institutions	[1]	39,958	8,282
Trade accounts receivable collected to be remitted	[2]	12,817	1,844
Tile Coating Systems [Member]
Debt Instrument [Line Items]
Cash proceeds from financial institutions		131,500	49,000
Trade accounts receivable collected to be remitted		$ 12,800	$ 9,700
[1]	In 2019 and 2018, our Tile Coatings business received cash proceeds from financial institutions of $ 131.5 million and $ 49.0 million, respectively. Refer to Note 4 for additional discussion of the Tile Coatings business and its classification as discontinued operations.
[2]	Included in Accrued expense and other current liabilities. During 2019 and 2018, trade accounts receivable collected to be remitted of $ 12.8 million and $ 9.7 million, respectively, pertained to the Tile Coatings business and is included in Current liabilities held-for-sale in our consolidated balance sheets.

Financial Instruments (Narrativ

Financial Instruments (Narrative) (Details)	12 Months Ended
	Dec. 31, 2019USD ($)	Dec. 31, 2018USD ($)	Dec. 31, 2017USD ($)	Dec. 31, 2019EUR (€)	Dec. 31, 2019USD ($)	Jun. 30, 2018EUR (€)	Jun. 30, 2018USD ($)	Dec. 31, 2017EUR (€)	Dec. 31, 2017USD ($)
Gain (loss) from the change in fair value of financial instruments	$ 2,500,000	$ 0	$ (2,900,000)
Notional amount		$ 387,200,000			$ 625,900,000
Interest Rate Swap [Member] | Cash Flow Hedging [Member]
Derivative, maturity date	Feb. 14, 2024
Notional amount					314,400,000
(Loss) gain to be reclassified during next 12 months, net					(3,700,000)
Interest Rate Swap [Member] | Net Investment Hedging [Member]
Derivative, maturity date	Feb. 14, 2024
Notional amount | €				€ 96,200,000
Cross Currency Swaps [Member] | Cash Flow Hedging [Member]
Derivative, maturity date	Feb. 14, 2024
Notional amount					226,000,000
(Loss) gain to be reclassified during next 12 months, net					$ 3,900,000
Secured Term Loan [Member] | Interest Rate Swap [Member]
Debt amount issued							$ 150,000,000		$ 150,000,000
Secured Euro Term Loan [Member] | Interest Rate Swap [Member]
Debt amount issued | €						€ 90,000,000		€ 90,000,000

Financial Instruments (Financia

Financial Instruments (Financial Instruments Assets (Liabilities) Measured At Fair Value) (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Financial Instruments And Fair Value Measurements [Line Items]
Cash and cash equivalents, Carrying Amount		$ 96,202	$ 96,101	$ 63,551
Loans payable, Carrying Amount			(50)
Long-term debt, Carrying Amount		(807,565)	(814,952)
Foreign currency forward contracts, net, Carrying amount		601	(270)
Cash and cash equivalents, Fair Value		96,202	96,101
Loans payable, Fair Value			(50)
Foreign currency forward contracts, net, Fair Value		601	(270)
Unamortized debt issuance costs		3,886
Cross Currency Swaps [Member]
Financial Instruments And Fair Value Measurements [Line Items]
Cross currency swaps, Carrying Amount		22,111	17,104
Cross currency swaps, Fair Value		22,111	17,104
Interest Rate Swap [Member]
Financial Instruments And Fair Value Measurements [Line Items]
Interest rate swaps-liabilities, Carrying Amount		(14,698)	(5,244)
Interest rate swaps-liabilities, Fair Value		(14,698)	(5,244)
Term Loan Facility - Amended Credit Facility [Member]
Financial Instruments And Fair Value Measurements [Line Items]
Long-term debt, Carrying Amount	[1]	(801,764)	(809,022)
Long-term debt, Fair Value	[1]	(799,750)	(796,796)
Unamortized debt issuance costs		3,900	4,800
Other Long-Term Notes Payable [Member]
Financial Instruments And Fair Value Measurements [Line Items]
Long-term debt, Carrying Amount		(3,496)	(4,098)
Long-term debt, Fair Value		(1,557)	(1,772)
Level 1 [Member]
Financial Instruments And Fair Value Measurements [Line Items]
Cash and cash equivalents, Fair Value		96,202	96,101
Foreign currency forward contracts, net, Fair Value
Level 1 [Member] | Cross Currency Swaps [Member]
Financial Instruments And Fair Value Measurements [Line Items]
Cross currency swaps, Fair Value
Level 1 [Member] | Interest Rate Swap [Member]
Financial Instruments And Fair Value Measurements [Line Items]
Interest rate swaps-liabilities, Fair Value
Level 1 [Member] | Term Loan Facility - Amended Credit Facility [Member]
Financial Instruments And Fair Value Measurements [Line Items]
Long-term debt, Fair Value	[1]
Level 1 [Member] | Other Long-Term Notes Payable [Member]
Financial Instruments And Fair Value Measurements [Line Items]
Long-term debt, Fair Value
Level 2 [Member]
Financial Instruments And Fair Value Measurements [Line Items]
Loans payable, Fair Value			(50)
Foreign currency forward contracts, net, Fair Value		601	(270)
Level 2 [Member] | Cross Currency Swaps [Member]
Financial Instruments And Fair Value Measurements [Line Items]
Cross currency swaps, Fair Value		22,111	17,104
Level 2 [Member] | Interest Rate Swap [Member]
Financial Instruments And Fair Value Measurements [Line Items]
Interest rate swaps-liabilities, Fair Value		(14,698)	(5,244)
Level 2 [Member] | Term Loan Facility - Amended Credit Facility [Member]
Financial Instruments And Fair Value Measurements [Line Items]
Long-term debt, Fair Value	[1]	(799,750)	(796,796)
Level 2 [Member] | Other Long-Term Notes Payable [Member]
Financial Instruments And Fair Value Measurements [Line Items]
Long-term debt, Fair Value		(1,557)	$ (1,772)
Level 3 [Member]
Financial Instruments And Fair Value Measurements [Line Items]
Cash and cash equivalents, Fair Value
Foreign currency forward contracts, net, Fair Value
Level 3 [Member] | Cross Currency Swaps [Member]
Financial Instruments And Fair Value Measurements [Line Items]
Cross currency swaps, Fair Value
Level 3 [Member] | Interest Rate Swap [Member]
Financial Instruments And Fair Value Measurements [Line Items]
Interest rate swaps-liabilities, Fair Value
Level 3 [Member] | Term Loan Facility - Amended Credit Facility [Member]
Financial Instruments And Fair Value Measurements [Line Items]
Long-term debt, Fair Value	[1]
Level 3 [Member] | Other Long-Term Notes Payable [Member]
Financial Instruments And Fair Value Measurements [Line Items]
Long-term debt, Fair Value
[1]	The carrying values of the term loan facilities are net of unamortized debt issuance costs of $ 3.9 million and $ 4.8 million for the period ended December 31, 2019, and December 31, 2018, respectively.

Financial Instruments (Schedule

Financial Instruments (Schedule Of Gain (Loss) Recognized In AOCI And The Amount Of (Loss) Gain Reclassified Into Earnings) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Cash Flow Hedging [Member] | Interest Expense [Member]
Amount of (Loss) Gain Reclassified from AOCL into Income	$ 5,403	$ 2,650
Cash Flow Hedging [Member] | Foreign Currency Gains (Losses), Net [Member]
Amount of (Loss) Gain Reclassified from AOCL into Income	4,759	14,509
Interest Rate Swap [Member] | Cash Flow Hedging [Member] | Interest Expense [Member]
Amount of Gain (Loss) Recognized in AOCL	(11,050)	(4,513)
Amount of (Loss) Gain Reclassified from AOCL into Income	(441)	(966)
Cross Currency Swaps [Member] | Interest Expense [Member]
Amount of Gain (Loss) Recognized in AOCL	6,330	7,243
Cross Currency Swaps [Member] | Cash Flow Hedging [Member] | Interest Expense [Member]
Amount of Gain (Loss) Recognized in AOCL	8,319	15,901
Amount of (Loss) Gain Reclassified from AOCL into Income	5,844	3,616
Cross Currency Swaps [Member] | Cash Flow Hedging [Member] | Foreign Currency Gains (Losses), Net [Member]
Amount of (Loss) Gain Reclassified from AOCL into Income	$ 4,759	$ 14,509

Financial Instruments (Effect O

Financial Instruments (Effect On Derivative Instruments On Consolidated Statements Of Operations) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Interest Expense [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain Recognized in Earnings	$ 24,302	$ 23,659
Foreign Currency Gains (Losses), Net [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain Recognized in Earnings	9,166	6,335
Foreign currency forward contracts [Member] | Foreign Currency Gains (Losses), Net [Member] | Not Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain Recognized in Earnings	$ (2,462)	$ (12)	$ (2,938)

Financial Instruments (Summary

Financial Instruments (Summary Of Gain (Loss) Recognized In AOCI, The Amount Reclassified Into Earnings And The Amount Gain Recognized In Income On Derivative (Amount Excluded From Effectiveness Testing)) (Details) - Cross Currency Swaps [Member] - Interest Expense [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Amount of Gain (Loss) Recognized in AOCL	$ 6,330	$ 7,243
Amount of Gain Recognized in Income of Derivative (Amount Excluded from Effectiveness Testing)	$ 3,688	$ 2,261

Financial Instruments (Fair Val

Financial Instruments (Fair Value Of Derivative Instruments On Consolidated Balance Sheets) (Details) - Not Designated as Hedging Instrument [Member] - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Other current assets [Member] | Cross Currency Swaps [Member]
Derivatives, Fair Value [Line Items]
Asset derivatives	$ 6,711	$ 9,606
Other current assets [Member] | Foreign currency forward contracts [Member]
Derivatives, Fair Value [Line Items]
Asset derivatives	1,474	626
Other Assets [Member] | Cross Currency Swaps [Member]
Derivatives, Fair Value [Line Items]
Asset derivatives	15,400	7,498
Accrued expenses and other current liabilities [Member] | Interest Rate Swap [Member]
Derivatives, Fair Value [Line Items]
Liability derivatives	(3,723)	(755)
Accrued expenses and other current liabilities [Member] | Foreign currency forward contracts [Member]
Derivatives, Fair Value [Line Items]
Liability derivatives	(873)	(896)
Other Noncurrent Liabilities [Member] | Interest Rate Swap [Member]
Derivatives, Fair Value [Line Items]
Liability derivatives	$ (10,975)	$ (4,489)

Income Taxes (Narrative) (Detai

Income Taxes (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Taxes [Abstract]
Refundable income taxes	$ 16,900	$ 13,500
Income taxes payable	8,400	6,000
U.S. deferred tax reduction			$ 21,500
State and local operating loss carryforwards	36,400
Foreign operating loss carryforwards	157,900
Tax credit carryforwards	22,617
Deferred tax asset valuation allowance	10,447	24,577
Unrecognized tax benefits that would impact effective tax rate	8,700	9,200	9,800
Expense (benefit) for interest, net of tax, and penalties related to unrecognized tax benefits	500	400	700
Accrued amount for payment of interest, net of tax, and penalties related to unrecognized tax benefits	2,900	1,800	$ 3,800
Anticipated reversal within next 12 months of liabilities for unrecognized tax benefits	2,400
Deferred income taxes provided on undistributed earnings of foreign subsidiaries	1,594	$ 1,575
Undistributed earnings of foreign subsidiaries not indefinitely reinvested	11,200
Undistributed earning of foreign subsidiaries indefinitely reinvested	$ 126,100
U.S. corporate tax rate	21.00%	21.00%	35.00%

Income Taxes (Earnings Before I

Income Taxes (Earnings Before Income Taxe Expense) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Taxes [Abstract]
U.S.	$ 18,709	$ 13,854	$ 20,816
Foreign	24,802	57,196	62,499
Income before income taxes	$ 43,511	$ 71,050	$ 83,315

Income Taxes (Income Tax Expens

Income Taxes (Income Tax Expense From Continuing Operations) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Current:
U.S. federal	$ 475	$ 449	$ 714
Foreign	18,358	19,548	25,908
State and local	168	211	123
Total current	19,001	20,208	26,745
Deferred:
U.S. federal	(3,832)	3,265	25,125
Foreign	(8,340)	(9,157)	(5,801)
State and local	1,290	(186)	344
Total deferred	(10,882)	(6,078)	19,668
Total income tax expense (benefit)	$ 8,119	$ 14,130	$ 46,413

Income Taxes (Income Tax Expe_2

Income Taxes (Income Tax Expense (Benefit) Allocated Directly to Ferro Corporation Shareholders' Equity) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Taxes [Abstract]
Interest rate swaps	$ (3,210)	$ (1,529)	$ 547
Postretirement benefit liability adjustments	11	(32)	1
Net investment hedge	654	954	(4,025)
Foreign currency translations	27
Total income tax (benefit) expense allocated to Ferro Corporation shareholders' equity	$ (2,518)	$ (607)	$ (3,477)

Income Taxes (Reconciliation of

Income Taxes (Reconciliation of U.S. Federal Statutory Income Tax Rate and Effective Tax Rate) (Details)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Taxes [Abstract]
U.S. federal statutory income tax rate	21.00%	21.00%	35.00%
Foreign tax rate difference	9.80%	7.40%	(5.90%)
Non-deductible expenses	4.40%	2.90%	0.10%
Global intangible low-taxed income, net	2.80%	1.80%
Other	2.80%	(2.50%)	(1.90%)
Uncertain tax positions, net of tax audit settlements	1.70%	3.80%	7.00%
Foreign currency	1.40%	0.30%	0.70%
Foreign withholding taxes	1.30%	1.00%	0.70%
State taxes	1.30%	0.70%	(0.60%)
Tax rate changes	0.90%	(3.00%)	25.20%
Goodwill dispositions and impairments	(1.20%)		(0.50%)
Tax credits	(3.20%)	(1.70%)	(1.20%)
Foreign derived intangible income deduction	(3.20%)	(1.60%)
Net adjustment of prior year accrual	(5.00%)	(4.20%)	(1.00%)
Adjustment of valuation allowances	(16.10%)	(6.00%)	(1.90%)
Effective tax rate	18.70%	19.90%	55.70%

Income Taxes (Components of Def

Income Taxes (Components of Deferred Tax Assets and Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Deferred tax assets:
Foreign operating loss carryforwards	$ 35,394	$ 41,611
Pension and other benefit programs	39,633	37,397
Foreign tax credit carryforwards	11,423	17,356
Accrued liabilities	10,726	11,114
Other credit carryforwards	6,707	5,815
Other	11,161	9,035
State and local operating loss carryforwards	2,058	2,272
Inventories	2,366	2,153
Allowance for doubtful accounts	746	704
Currency differences	1,407
Total deferred tax assets	121,621	127,457
Deferred tax liabilities:
Property, plant and equipment and intangibles -- depreciation and amortization	23,617	28,601
Unremitted earnings of foreign subsidiaries	1,594	1,575
Other	2,115	2,784
Total deferred tax liabilities	27,326	32,960
Net deferred tax assets before valuation allowance	94,295	94,497
Valuation allowance	(10,447)	(24,577)
Net deferred tax assets	$ 83,848	$ 69,920

Income Taxes (Expirations of Op

Income Taxes (Expirations of Operating Loss Carryforwards and Tax Credit Carryforwards) (Details) $ in Thousands	Dec. 31, 2019USD ($)
Income Tax And Carryforwards [Line Items]
Operating Loss Carryforwards	$ 194,273
Tax Credit Carryforwards	22,617
Expiring In 2020 [Member]
Income Tax And Carryforwards [Line Items]
Operating Loss Carryforwards	10,175
Tax Credit Carryforwards	137
Expiring In 2021-2025 [Member]
Income Tax And Carryforwards [Line Items]
Operating Loss Carryforwards	23,953
Tax Credit Carryforwards	10,791
Expiring In 2026-2030 [Member]
Income Tax And Carryforwards [Line Items]
Operating Loss Carryforwards	22,814
Tax Credit Carryforwards	6,469
Expiring In 2031-2035 [Member]
Income Tax And Carryforwards [Line Items]
Operating Loss Carryforwards	11,943
Tax Credit Carryforwards	3,267
Expiring In 2036-2040 [Member]
Income Tax And Carryforwards [Line Items]
Operating Loss Carryforwards	81
Tax Credit Carryforwards	966
Expiring In 2041-Indefinitely [Member]
Income Tax And Carryforwards [Line Items]
Operating Loss Carryforwards	125,307
Tax Credit Carryforwards	$ 987

Income Taxes (Classification of

Income Taxes (Classification of Net Deferred Income Tax Assets) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Income Taxes [Abstract]
Non-current assets	$ 98,714	$ 88,526
Non-current liabilities	(14,866)	(18,606)
Net deferred tax assets	$ 83,848	$ 69,920

Income Taxes (Activity and Bala

Income Taxes (Activity and Balances of Unrecognized Tax Benefits) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Taxes [Abstract]
Balance at beginning of year	$ 24,869	$ 28,470	$ 30,085
Additions based on tax positions related to the current year	3,425	4,041	1,609
Additions for tax positions of prior years		24	2,057
Reductions for tax positions of prior years		(1,710)	(288)
Reductions as a result of expiring statutes of limitations	(688)	(420)	(6,284)
Foreign currency adjustments	(660)	(786)	1,644
Settlements with taxing authorities	(946)	(4,750)	(353)
Balance at end of year	$ 26,000	$ 24,869	$ 28,470

Contingent Liabilities (Narrati

Contingent Liabilities (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2016
Commitments And Contingent Liabilities [Line Items]
Amount of bank guarantees and standby letters of credit issued by financial institutions		$ 4.8	$ 5.5
Undiscounted remediation liability associated with environmentally contaminated non-operating facility		7.2	8.5
ARGENTINA | Argentina Supreme Court [Member]
Commitments And Contingent Liabilities [Line Items]
Contingent tax liability		$ 0.6	$ 1.3	$ 8.7
Contingent tax liability, decrease	$ 4.5

Retirement Benefits (Narrative)

Retirement Benefits (Narrative) (Details) $ in Thousands	3 Months Ended		12 Months Ended
	Dec. 31, 2019USD ($)itemshares	Dec. 31, 2018USD ($)shares	Dec. 31, 2019USD ($)itemshares	Dec. 31, 2018USD ($)shares	Dec. 31, 2017USD ($)
Pension Postretirement And Other Retirement Plans [Line Items]
Number Of Plans That Accrue Benefit Service Costs | item	1		1
Mark-to-market actuarial net losses (gains)	$ 13,300	$ (16,500)
Actuarial loss (gain)				$ 17,900
Shares of company common stock | shares	82,000,000	83,000,000	82,000,000	83,000,000
Unrealized (losses) gains			$ 3,900	$ (1,000)
Defined contribution plan vesting period			5 years
Defined contribution retirement plans expense			$ 3,700	$ 2,900	$ 5,700
United States [Member]
Pension Postretirement And Other Retirement Plans [Line Items]
Shares of company common stock | shares	300,000	300,000	300,000	300,000
Market value of shares held of company common stock	$ 4,200	$ 4,400	$ 4,200	$ 4,400
Expected contribution to pension plans	9,700		9,700
Non-U.S. Pension Plans [Member]
Pension Postretirement And Other Retirement Plans [Line Items]
Expected contribution to pension plans	$ 3,500		$ 3,500
Fixed Income Securities [Member] | United States [Member]
Pension Postretirement And Other Retirement Plans [Line Items]
Target allocation percentage for fixed income, equity and other investments	35.00%		35.00%
Fixed Income Securities [Member] | Non-U.S. Pension Plans [Member]
Pension Postretirement And Other Retirement Plans [Line Items]
Target allocation percentage for fixed income, equity and other investments	75.00%		75.00%
Equity Securities [Member] | United States [Member]
Pension Postretirement And Other Retirement Plans [Line Items]
Target allocation percentage for fixed income, equity and other investments	60.00%		60.00%
Equity Securities [Member] | Non-U.S. Pension Plans [Member]
Pension Postretirement And Other Retirement Plans [Line Items]
Target allocation percentage for fixed income, equity and other investments	24.00%		24.00%
Other Investments [Member] | United States [Member]
Pension Postretirement And Other Retirement Plans [Line Items]
Target allocation percentage for fixed income, equity and other investments	5.00%		5.00%
Other Investments [Member] | Non-U.S. Pension Plans [Member]
Pension Postretirement And Other Retirement Plans [Line Items]
Target allocation percentage for fixed income, equity and other investments	1.00%		1.00%
Pension Plan [Member] | United States [Member]
Pension Postretirement And Other Retirement Plans [Line Items]
Mark-to-market actuarial net losses (gains)			$ 1,228	16,633	(5,432)
Charge to remeasure liability based on lower discount rate			28,300
Actuarial loss (gain)			24,477	(14,414)
Gains (losses) from returns on plan assets			(23,300)	31,000	20,800
Gain on demographic experience and actuarial assumptions			3,800
Pension Plan [Member] | Non-U.S. Pension Plans [Member]
Pension Postretirement And Other Retirement Plans [Line Items]
Mark-to-market actuarial net losses (gains)			11,033	2,444	(1,792)
Actuarial loss (gain)			14,949	816
Postretirement Health Care And Life Insurance Benefit Plans [Member]
Pension Postretirement And Other Retirement Plans [Line Items]
Actuarial loss (gain)			1,080	(2,580)
Postretirement Health Care And Life Insurance Benefit Plans [Member] | United States [Member]
Pension Postretirement And Other Retirement Plans [Line Items]
Mark-to-market actuarial net losses (gains)			$ 1,080	$ (2,580)	$ 458

Retirement Benefits (Defined Be

Retirement Benefits (Defined Benefit Pension Plans) (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Net periodic benefit cost:
Mark-to-market actuarial net loss (gain)	$ 13,300	$ (16,500)
Change in benefit obligation:
Actuarial loss (gain)				$ 17,900
Amounts recognized in the balance sheet:
Accrued expenses and other current liabilities	(73,759)	(52,867)	$ (73,759)	(52,867)
Postretirement and pension liabilities	(174,021)	(166,681)	(174,021)	(166,681)
United States [Member] | Pension Plan [Member]
Net periodic benefit cost:
Service cost			10	11	$ 11
Interest cost			11,787	11,308	14,594
Expected return on plan assets			(12,622)	(15,982)	(20,111)
Amortization of prior service cost					7
Mark-to-market actuarial net loss (gain)			1,228	16,633	(5,432)
Curtailment and settlement effects losses					2,581
Total net periodic benefit cost (credit)			403	11,970	(8,350)
Change in benefit obligation:
Benefit obligation at beginning of year			279,885	303,170
Service cost			10	11	11
Interest cost			11,787	11,308	14,594
Settlements				(25)
Benefits paid			(19,978)	(20,165)
Actuarial loss (gain)			24,477	(14,414)
Benefit obligation at end of year	296,181	279,885	296,181	279,885	303,170
Accumulated benefit obligation at end of year	296,181	279,885	296,181	279,885
Fair value of plan assets at beginning of year			204,425	239,260
Actual return on plan assets			35,871	(15,065)
Employer contributions			2,909	420
Benefits paid			(19,978)	(20,165)
Effect of settlements				(25)
Fair value of plan assets at end of year	223,227	204,425	223,227	204,425	$ 239,260
Amounts recognized in the balance sheet:
Accrued expenses and other current liabilities	(410)	(404)	(410)	(404)
Postretirement and pension liabilities	(72,544)	(75,056)	(72,544)	(75,056)
Funded status	$ (72,954)	$ (75,460)	$ (72,954)	$ (75,460)
Weighted-average assumptions as of December 31:
Discount rate			4.40%	3.80%	4.40%
Discount rate	3.35%	4.40%	3.35%	4.40%
Expected return on plan assets			7.70%	7.70%	8.20%
Pension plans with benefit obligations in excess of plan assets:
Benefit obligations	$ 296,181	$ 279,885	$ 296,181	$ 279,885
Plan assets	223,227	204,425	223,227	204,425
Pension plans with accumulated benefit obligations in excess of plan assets:
Projected benefit obligations	296,181	279,885	296,181	279,885
Accumulated benefit obligations	296,181	279,885	296,181	279,885
Plan assets	223,227	204,425	223,227	204,425
Prior service (cost):
Balance at beginning of year
Amounts recognized as net periodic benefit costs
Plan amendments
Exchange rate effects
Balance at end of year
Estimated amounts to be amortized in 2020
Non-U.S. Pension Plans [Member] | Pension Plan [Member]
Net periodic benefit cost:
Service cost			1,410	1,392	1,410
Interest cost			2,264	2,166	2,089
Expected return on plan assets			(758)	(755)	(773)
Amortization of prior service cost			7	6	8
Mark-to-market actuarial net loss (gain)			11,033	2,444	(1,792)
Curtailment and settlement effects losses			292	156	28
Special termination benefits				106	27
Total net periodic benefit cost (credit)			14,248	5,515	997
Change in benefit obligation:
Benefit obligation at beginning of year			106,098	109,450
Service cost			1,410	1,392	1,410
Interest cost			2,264	2,166	2,089
Curtailments			(45)
Amendments			23
Settlements			(734)	(517)
Special termination benefits				106
Plan participants' contributions			14	21
Benefits paid			(5,367)	(2,658)
Net transfer in				140
Actuarial loss (gain)			14,949	816
Exchange rate effect			(1,914)	(4,818)
Benefit obligation at end of year	116,698	106,098	116,698	106,098	109,450
Accumulated benefit obligation at end of year	107,332	97,406	107,332	97,406
Fair value of plan assets at beginning of year			32,979	36,314
Actual return on plan assets			4,336	(1,029)
Employer contributions			3,277	2,523
Plan participants' contributions			14	21
Benefits paid			(5,367)	(2,658)
Effect of settlements			(734)	(517)
Exchange rate effect			(607)	(1,675)
Fair value of plan assets at end of year	33,898	32,979	33,898	32,979	$ 36,314
Amounts recognized in the balance sheet:
Other non-current assets	44		44
Accrued expenses and other current liabilities	(2,589)	(2,912)	(2,589)	(2,912)
Postretirement and pension liabilities	(80,255)	(70,205)	(80,255)	(70,205)
Funded status	$ (82,800)	$ (73,117)	$ (82,800)	$ (73,117)
Weighted-average assumptions as of December 31:
Discount rate			2.61%	2.35%	2.24%
Discount rate	1.76%	2.61%	1.76%	2.61%
Rate of compensation increase			3.19%	3.18%	3.14%
Rate of compensation increase	3.11%	3.19%	3.11%	3.19%
Expected return on plan assets			2.74%	2.55%	2.54%
Pension plans with benefit obligations in excess of plan assets:
Benefit obligations	$ 84,791	$ 78,791	$ 84,791	$ 78,791
Plan assets	1,946	5,674	1,946	5,674
Pension plans with accumulated benefit obligations in excess of plan assets:
Projected benefit obligations	84,338	76,097	84,338	76,097
Accumulated benefit obligations	75,073	67,619	75,073	67,619
Plan assets	1,553	3,100	1,553	3,100
Prior service (cost):
Balance at beginning of year			(22)	2
Amounts recognized as net periodic benefit costs			(7)	(6)
Plan amendments			(14)
Exchange rate effects			(1)	(18)
Balance at end of year	(44)	$ (22)	(44)	$ (22)	$ 2
Estimated amounts to be amortized in 2020	$ (8)		$ (8)

Retirement Benefits (Fair Value

Retirement Benefits (Fair Value of Pension Plan Assets) (Details) - Pension Plan [Member] - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
United States [Member]
Pension Postretirement And Other Retirement Plans [Line Items]
Total fair value of plan assets	$ 223,227	$ 204,425	$ 239,260
United States [Member] | Investments Measured At Net Asset Value [Member]
Pension Postretirement And Other Retirement Plans [Line Items]
Total fair value of plan assets	13,673	12,774
United States [Member] | Guaranteed Deposits [Member]
Pension Postretirement And Other Retirement Plans [Line Items]
Fair value of plan assets	1,863	1,723
United States [Member] | Fixed Income Mutual Funds [Member]
Pension Postretirement And Other Retirement Plans [Line Items]
Fair value of plan assets	73,563	74,310
United States [Member] | Commingled Funds [Member]
Pension Postretirement And Other Retirement Plans [Line Items]
Fair value of plan assets	678	728
United States [Member] | Common Stock [Member]
Pension Postretirement And Other Retirement Plans [Line Items]
Fair value of plan assets	4,198	4,439
United States [Member] | Equities: Mutual Funds [Member]
Pension Postretirement And Other Retirement Plans [Line Items]
Fair value of plan assets	128,546	109,756
United States [Member] | Equities: Commingled Funds [Member]
Pension Postretirement And Other Retirement Plans [Line Items]
Fair value of plan assets	706	695
United States [Member] | Total Assets In The Fair Value Hierarchy [Member]
Pension Postretirement And Other Retirement Plans [Line Items]
Fair value of plan assets	209,554	191,651
Non-U.S. Pension Plans [Member]
Pension Postretirement And Other Retirement Plans [Line Items]
Total fair value of plan assets	33,898	32,979	$ 36,314
Non-U.S. Pension Plans [Member] | Cash And Cash Equivalents [Member]
Pension Postretirement And Other Retirement Plans [Line Items]
Total fair value of plan assets	10	89
Non-U.S. Pension Plans [Member] | Guaranteed Deposits [Member]
Pension Postretirement And Other Retirement Plans [Line Items]
Total fair value of plan assets	30,903	28,094
Non-U.S. Pension Plans [Member] | Fixed Income Mutual Funds [Member]
Pension Postretirement And Other Retirement Plans [Line Items]
Total fair value of plan assets	2,352	1,070
Non-U.S. Pension Plans [Member] | Equities: Mutual Funds [Member]
Pension Postretirement And Other Retirement Plans [Line Items]
Total fair value of plan assets	544	451
Non-U.S. Pension Plans [Member] | Fixed Income: Other [Member]
Pension Postretirement And Other Retirement Plans [Line Items]
Total fair value of plan assets	89	3,194
Non-U.S. Pension Plans [Member] | Other Assets [Member]
Pension Postretirement And Other Retirement Plans [Line Items]
Total fair value of plan assets		81
Level 1 [Member] | United States [Member]
Pension Postretirement And Other Retirement Plans [Line Items]
Total fair value of plan assets	206,307	188,505
Level 1 [Member] | United States [Member] | Fixed Income Mutual Funds [Member]
Pension Postretirement And Other Retirement Plans [Line Items]
Fair value of plan assets	73,563	74,310
Level 1 [Member] | United States [Member] | Common Stock [Member]
Pension Postretirement And Other Retirement Plans [Line Items]
Fair value of plan assets	4,198	4,439
Level 1 [Member] | United States [Member] | Equities: Mutual Funds [Member]
Pension Postretirement And Other Retirement Plans [Line Items]
Fair value of plan assets	128,546	109,756
Level 1 [Member] | United States [Member] | Total Assets In The Fair Value Hierarchy [Member]
Pension Postretirement And Other Retirement Plans [Line Items]
Fair value of plan assets	206,307	188,505
Level 1 [Member] | Non-U.S. Pension Plans [Member]
Pension Postretirement And Other Retirement Plans [Line Items]
Total fair value of plan assets	2,995	2,702
Level 1 [Member] | Non-U.S. Pension Plans [Member] | Cash And Cash Equivalents [Member]
Pension Postretirement And Other Retirement Plans [Line Items]
Total fair value of plan assets	10
Level 1 [Member] | Non-U.S. Pension Plans [Member] | Guaranteed Deposits [Member]
Pension Postretirement And Other Retirement Plans [Line Items]
Total fair value of plan assets		32
Level 1 [Member] | Non-U.S. Pension Plans [Member] | Fixed Income Mutual Funds [Member]
Pension Postretirement And Other Retirement Plans [Line Items]
Total fair value of plan assets	2,352	1,070
Level 1 [Member] | Non-U.S. Pension Plans [Member] | Equities: Mutual Funds [Member]
Pension Postretirement And Other Retirement Plans [Line Items]
Total fair value of plan assets	544	451
Level 1 [Member] | Non-U.S. Pension Plans [Member] | Fixed Income: Other [Member]
Pension Postretirement And Other Retirement Plans [Line Items]
Total fair value of plan assets	89	1,068
Level 1 [Member] | Non-U.S. Pension Plans [Member] | Other Assets [Member]
Pension Postretirement And Other Retirement Plans [Line Items]
Total fair value of plan assets		81
Level 2 [Member] | United States [Member]
Pension Postretirement And Other Retirement Plans [Line Items]
Total fair value of plan assets	3,003	2,920
Level 2 [Member] | United States [Member] | Guaranteed Deposits [Member]
Pension Postretirement And Other Retirement Plans [Line Items]
Fair value of plan assets	1,863	1,723
Level 2 [Member] | United States [Member] | Commingled Funds [Member]
Pension Postretirement And Other Retirement Plans [Line Items]
Fair value of plan assets	434	502
Level 2 [Member] | United States [Member] | Equities: Commingled Funds [Member]
Pension Postretirement And Other Retirement Plans [Line Items]
Fair value of plan assets	706	695
Level 2 [Member] | United States [Member] | Total Assets In The Fair Value Hierarchy [Member]
Pension Postretirement And Other Retirement Plans [Line Items]
Fair value of plan assets	3,003	2,920
Level 2 [Member] | Non-U.S. Pension Plans [Member]
Pension Postretirement And Other Retirement Plans [Line Items]
Total fair value of plan assets	748	2,959
Level 2 [Member] | Non-U.S. Pension Plans [Member] | Cash And Cash Equivalents [Member]
Pension Postretirement And Other Retirement Plans [Line Items]
Total fair value of plan assets		89
Level 2 [Member] | Non-U.S. Pension Plans [Member] | Guaranteed Deposits [Member]
Pension Postretirement And Other Retirement Plans [Line Items]
Total fair value of plan assets	748	744
Level 2 [Member] | Non-U.S. Pension Plans [Member] | Fixed Income: Other [Member]
Pension Postretirement And Other Retirement Plans [Line Items]
Total fair value of plan assets		2,126
Level 3 [Member] | United States [Member]
Pension Postretirement And Other Retirement Plans [Line Items]
Total fair value of plan assets	244	226
Level 3 [Member] | United States [Member] | Commingled Funds [Member]
Pension Postretirement And Other Retirement Plans [Line Items]
Fair value of plan assets	244	226
Level 3 [Member] | United States [Member] | Total Assets In The Fair Value Hierarchy [Member]
Pension Postretirement And Other Retirement Plans [Line Items]
Fair value of plan assets	244	226
Level 3 [Member] | Non-U.S. Pension Plans [Member]
Pension Postretirement And Other Retirement Plans [Line Items]
Total fair value of plan assets	30,155	27,318
Level 3 [Member] | Non-U.S. Pension Plans [Member] | Guaranteed Deposits [Member]
Pension Postretirement And Other Retirement Plans [Line Items]
Total fair value of plan assets	$ 30,155	$ 27,318

Retirement Benefits (Schedule o

Retirement Benefits (Schedule of Rollforward of Level 3 Assets) (Details) - Pension Plan [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning Balance	$ 27,544	$ 30,396
Sales	(473)	(487)
Gains (losses) included in earnings	3,903	(1,003)
Exchange rate effect	(575)	(1,362)
Ending Balance	30,399	27,544
Guaranteed Deposits [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning Balance	27,318	30,127
Sales	(473)	(487)
Gains (losses) included in earnings	3,885	(960)
Exchange rate effect	(575)	(1,362)
Ending Balance	30,155	27,318
Commingled Funds [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning Balance	226	269
Sales
Gains (losses) included in earnings	18	(43)
Exchange rate effect
Ending Balance	$ 244	$ 226

Retirement Benefits (Future Pen

Retirement Benefits (Future Pension Benefit Payments) (Details) - Pension Plan [Member] $ in Thousands	Dec. 31, 2019USD ($)
United States [Member]
Pension Postretirement And Other Retirement Plans [Line Items]
2020	$ 20,340
2021	20,580
2022	20,952
2023	20,450
2024	20,336
2025-2029	96,857
Non-U.S. Pension Plans [Member]
Pension Postretirement And Other Retirement Plans [Line Items]
2020	3,487
2021	3,275
2022	3,655
2023	4,017
2024	3,371
2025-2029	$ 22,516

Retirement Benefits (Postretire

Retirement Benefits (Postretirement Health Care and Life Insurance Benefit Plans) (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Net periodic benefit cost:
Mark-to-market actuarial net loss (gain)	$ 13,300	$ (16,500)
Change in benefit obligation:
Mark-to-market actuarial net loss (gain)	13,300	(16,500)
Actuarial loss (gain)				$ 17,900
Amounts recognized in the balance sheet:
Accrued expenses and other current liabilities	(73,759)	(52,867)	$ (73,759)	(52,867)
Postretirement and pension liabilities	(174,021)	(166,681)	(174,021)	(166,681)
Postretirement Health Care And Life Insurance Benefit Plans [Member]
Net periodic benefit cost:
Interest cost			702	732
Service cost			2
Change in benefit obligation:
Benefit obligation at beginning of year			17,198	20,725
Service cost			2
Interest cost			702	732
Benefits paid			(1,833)	(1,679)
Actuarial loss (gain)			1,080	(2,580)
Benefit obligation at end of year	17,149	17,198	17,149	17,198	$ 20,725
Fair value of plan assets at beginning of year
Employer contributions			1,836	1,679
Benefits paid			(1,836)	(1,679)
Fair value of plan assets at end of year
Amounts recognized in the balance sheet:
Accrued expenses and other current liabilities	(1,945)	(1,966)	(1,945)	(1,966)
Postretirement and pension liabilities	(15,204)	(15,232)	(15,204)	(15,232)
Funded status	$ 17,149	$ 17,198	$ 17,149	$ 17,198
Weighted-average assumptions as of December 31:
Discount rate	3.25%	4.30%	3.25%	4.30%
Current trend rate for health care costs	6.10%	6.30%	6.10%	6.30%
Ultimate trend rate for health care costs	4.50%	4.50%	4.50%	4.50%
Year that ultimate trend rate is reached			2036	2036
Postretirement Health Care And Life Insurance Benefit Plans [Member] | United States [Member]
Net periodic benefit cost:
Interest cost			$ 702	$ 732	843
Service cost			2
Mark-to-market actuarial net loss (gain)			1,080	(2,580)	458
Total net periodic benefit cost (credit)			1,784	(1,848)	1,301
One-percentage-point change in the assumed health care cost trend rates
Effect on total of service and interest cost components, Percentage Point Increase			38
Effect on total of service and interest cost components, Percentage Point Decrease			(34)
Effect on postretirement benefit obligation, Percentage Point Increase			877
Effect on postretirement benefit obligation, Percentage Point Decrease			(773)
Change in benefit obligation:
Service cost			2
Interest cost			702	732	843
Mark-to-market actuarial net loss (gain)			1,080	(2,580)	458
Total net periodic benefit (income) cost			$ 1,784	$ (1,848)	$ 1,301
Weighted-average assumptions as of December 31:
Discount rate			4.30%	3.70%	4.20%
Current trend rate for health care costs			6.30%	6.40%	6.50%
Ultimate trend rate for health care costs			4.50%	4.50%	4.50%
Year that ultimate trend rate is reached			2036	2036	2036

Retirement Benefits (Future Pos

Retirement Benefits (Future Postretirement Health Care and Life Insurance Benefit Payments) (Details) - Postretirement Health Care And Life Insurance Benefit Plans [Member] $ in Thousands	Dec. 31, 2019USD ($)
Pension Postretirement And Other Retirement Plans [Line Items]
Before Medicare Subsidy 2020	$ 1,945
Before Medicare Subsidy 2021	1,846
Before Medicare Subsidy 2022	1,741
Before Medicare Subsidy 2023	1,635
Before Medicare Subsidy 2024	1,537
Before Medicare Subsidy 2025-2029	6,181
After Medicare Subsidy, 2020	1,737
After Medicare Subsidy, 2021	1,651
After Medicare Subsidy, 2022	1,559
After Medicare Subsidy, 2023	1,466
After Medicare Subsidy, 2024	1,382
After Medicare Subsidy, 2025-2029	$ 5,589

Stock-Based Compensation (Narra

Stock-Based Compensation (Narrative) (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares of common stock reserved under plan	4,500,000
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Term of stock option or unit granted	10 years
Stock option vesting period option	3 years
Percentage of stock options to become vested and exercisable	100.00%
Weighted-average grant-date fair value	$ 6.47	$ 8.91	$ 7.29
Recognized stock-based compensation expense	$ 1,801	$ 1,528	$ 1,560
Unearned compensation cost related to the unvested portion of all stock-based awards	$ 1,469	$ 606	$ 587
Performance Share Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Term of stock option or unit granted	3 years
Number of share based compensation units granted	344,224
Maximum payout percentage	200.00%
Weighted-average grant-date fair value	$ 17.61	$ 22.92	$ 14.89
Vesting period	3 years
Recognized stock-based compensation expense	$ 3,607	$ 4,152	$ 6,772
Unearned compensation cost related to the unvested portion of all stock-based awards	$ 2,730	$ 3,599	$ 3,726
Performance Share Units Associated With 2019 Grants [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance shares outstanding	200,000
Performance Share Units Associated With 2018 Grants [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance shares outstanding	100,000
Restricted Stock Units[Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of share based compensation units granted	200,000	100,000	200,000
Vesting period	3 years
Recognized stock-based compensation expense	$ 1,700	$ 2,200	$ 1,500
Unearned compensation cost related to the unvested portion of all stock-based awards	$ 2,800	$ 2,800	$ 2,400
Director's Deferred Compensation [Member] | Common Shares in Treasury [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock held in rabbi trust	100,000	100,000
Value of common stock held in rabbi trust	$ 1,600	$ 1,200

Stock-Based Compensation (Detai

Stock-Based Compensation (Details Of Weighted-Average Grant-Date Fair Values And Assumptions Used For Estimating Fair Values) (Details) - Stock Options [Member] - $ / shares	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average grant-date fair value	$ 6.47	$ 8.91	$ 7.29
Expected life, in years	5 years 7 months 6 days	5 years 4 months 24 days	6 years
Risk-free interest rate	2.50%	2.70%
Risk-free interest rate, minimum			1.90%
Risk-free interest rate, maximum			2.30%
Expected volatility	33.90%	39.70%
Expected volatility, minimum			48.00%
Expected volatility, maximum			51.50%
Expected dividend yield

Stock-Based Compensation (Summa

Stock-Based Compensation (Summary of Stock-Based Compensation Activity) (Details) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2019USD ($)$ / sharesshares
Stock Options [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of Options, Outstanding at Beginning	1,578,389
Number of Options, Granted	279,000
Number of Options, Exercised	(116,790)
Number of Options, Forfeited or expired	(11,600)
Number of Options, Outstanding at Ending	1,728,999
Number of Options, Exercisable, Ending Balance	1,296,030
Number of Options, Vested or expected to vest, Ending Balance	1,728,999
Weighted-Average Exercise Price, Outstanding at Beginning | $ / shares	$ 11.32
Weighted-Average Exercise Price, Granted | $ / shares	17.89
Weighted-Average Exercise Price, Exercised | $ / shares	9
Weighted-Average Exercise Price, Forfeited or expired | $ / shares	18.27
Weighted-Average Exercise Price, Outstanding at Ending | $ / shares	12.49
Weighted-Average Exercise Price, Exercisable, Ending Balance | $ / shares	14.57
Weighted-Average Exercise Price, Vested or expected to vest, Ending Balance | $ / shares	$ 12.49
Weighted-Average Remaining Contractual Term, Outstanding, Ending Balance	5 years 4 months 24 days
Weighted-Average Remaining Contractual Term, Exercisable, Ending Balance	4 years 3 months 18 days
Weighted-Average Remaining Contractual Term, Vested or expected to vest, Ending Balance	5 years 4 months 24 days
Aggregate Intrinsic Value, Outstanding, Ending Balance | $	$ 5,960
Aggregate Intrinsic Value, Exercisable, Ending Balance | $	5,923
Aggregate Intrinsic Value, Vested or expected to vest, Ending Balance | $	$ 5,960
Performance Share Units [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of Units, Outstanding at Beginning	526,300
Number of Units, Granted	344,224
Number of Units, Earned	(406,300)
Number of Units, Forfeited or expired	(12,224)
Number of Units, Outstanding at Ending	452,000
Number of Units, Vested or expected to vest, Ending Balance	452,000
Weighted-Average Remaining Contractual Term, Outstanding, Ending Balance	1 year
Weighted- Average Remaining Contractual Term, Vested or expected to vest, Ending Balance	1 year

Stock-Based Compensation (Infor

Stock-Based Compensation (Information Related to Stock Options Exercised) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Proceeds from the exercise of stock options	$ 1,052	$ 764	$ 4,526
Continuing Operations [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Proceeds from the exercise of stock options	1,052	727	4,283
Intrinsic value of stock options exercised	750	1,590	2,780
Income tax benefit related to stock options exercised	$ 158	$ 334	$ 980

Stock-Based Compensation (Sum_2

Stock-Based Compensation (Summary of Stock-Based Compensation Expense) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Stock Options [Member]
Schedule Of Share Based Compensation Arrangements [Line Items]
Compensation expense recorded in selling, general and administrative expenses	$ 1,801	$ 1,528	$ 1,560
Deferred income tax benefits related to compensation expense	378	321	328
Total fair value of stock options vested	1,387	1,390	1,370
Unrecognized compensation cost	$ 1,469	$ 606	$ 587
Expected weighted-average recognition period for unrecognized compensation, in years	2 years 2 months 12 days	2 years 8 months 12 days	2 years
Performance Share Units [Member]
Schedule Of Share Based Compensation Arrangements [Line Items]
Compensation expense recorded in selling, general and administrative expenses	$ 3,607	$ 4,152	$ 6,772
Deferred income tax benefits related to compensation expense	757	872	1,422
Unrecognized compensation cost	$ 2,730	$ 3,599	$ 3,726
Expected weighted-average recognition period for unrecognized compensation, in years	1 year 7 months 6 days	1 year 4 months 24 days	1 year 4 months 24 days

Restructuring And Cost Reduct_3

Restructuring And Cost Reduction Programs (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Jun. 30, 2019
Total restructuring charges	$ 11,000	$ 7,100	$ 7,000
Total expected restructuring charges	$ 7,576
Period expected for cash payments for employee benefits and other costs	12 months
2019 Restructuring Plan [Member]
Total expected restructuring charges				$ 7,600
Tile Coating Systems [Member]
Restructuring costs	$ 1,900	$ 6,200	$ 2,800

Restructuring And Cost Reduct_4

Restructuring And Cost Reduction Programs (Summary of Charges Associated with Restructuring Programs by Major Type of Charges) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Restructuring Cost And Reserve [Line Items]
Total expected restructuring charges	$ 7,576
Restructuring charges	10,955	$ 7,116	$ 6,957
Cumulative restructuring charges incurred	77,313
Global Optimization Program [Member]
Restructuring Cost And Reserve [Line Items]
Total expected restructuring charges	7,576
Restructuring charges	10,955	7,116	6,957
Cumulative restructuring charges incurred	77,313
Employee Severance [Member]
Restructuring Cost And Reserve [Line Items]
Total expected restructuring charges	7,500
Restructuring charges	7,163	3,560	3,701
Cumulative restructuring charges incurred	44,251
Employee Severance [Member] | Global Optimization Program [Member]
Restructuring Cost And Reserve [Line Items]
Total expected restructuring charges	7,500
Restructuring charges	7,163	3,560	3,701
Cumulative restructuring charges incurred	44,251
Other Costs [Member]
Restructuring Cost And Reserve [Line Items]
Total expected restructuring charges	76
Restructuring charges	3,792	3,556	3,256
Cumulative restructuring charges incurred	33,062
Other Costs [Member] | Global Optimization Program [Member]
Restructuring Cost And Reserve [Line Items]
Total expected restructuring charges	76
Restructuring charges	3,792	$ 3,556	$ 3,256
Cumulative restructuring charges incurred	$ 33,062

Restructuring And Cost Reduct_5

Restructuring And Cost Reduction Programs (Summary of Charges Associated with Restructuring Programs by Segments) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Restructuring Cost And Reserve [Line Items]
Total Expected Charges	$ 7,576
Restructuring charges incurred	10,955	$ 7,116	$ 6,957
Cumulative charges to date	77,313
Operating Segments [Member]
Restructuring Cost And Reserve [Line Items]
Total Expected Charges	269
Restructuring charges incurred	119	171	4,994
Cumulative charges to date	31,388
Performance Colors And Glass [Member] | Operating Segments [Member]
Restructuring Cost And Reserve [Line Items]
Total Expected Charges	169
Restructuring charges incurred	(5)	23	3,744
Cumulative charges to date	26,927
Color Solutions [Member] | Operating Segments [Member]
Restructuring Cost And Reserve [Line Items]
Total Expected Charges	100
Restructuring charges incurred	124	148	1,250
Cumulative charges to date	4,461
Corporate Restructuring Charges [Member]
Restructuring Cost And Reserve [Line Items]
Total Expected Charges	7,307
Restructuring charges incurred	10,836	$ 6,945	$ 1,963
Cumulative charges to date	$ 45,925

Restructuring And Cost Reduct_6

Restructuring And Cost Reduction Programs (Summary Of Accruals Related To Restructuring And Cost Reduction Programs) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Restructuring Cost and Reserve [Line Items]
Beginning balance	$ 1,843	$ 2,299	$ 1,698
Restructuring charges	10,955	7,116	6,957
Cash payments	(8,818)	(4,275)	(3,297)
Non-cash items	(1,741)	(3,297)	(3,059)
Ending balance	2,239	1,843	2,299
Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Beginning balance	1,011	1,309	209
Restructuring charges	7,163	3,560	3,701
Cash payments	(6,987)	(3,678)	(2,797)
Non-cash items	(440)	(180)
Non-cash items			196
Ending balance	747	1,011	1,309
Other Costs [Member]
Restructuring Cost and Reserve [Line Items]
Beginning balance	832	990	1,489
Restructuring charges	3,792	3,556	3,256
Cash payments	(1,831)	(597)	(500)
Non-cash items	(1,301)	(3,117)	(3,255)
Ending balance	$ 1,492	$ 832	$ 990

Leases (Narrative) (Details)

Leases (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2019
Leases [Abstract]
Initial Lease Term			12 months
Rent expense for all operating leases	$ 12.7	$ 10.3

Leases (Components of Lease Cos

Leases (Components of Lease Costs) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019USD ($)
Leases [Line Items]
Net lease cost	$ 14,658
Selling, General And Administrative Expenses [Member]
Leases [Line Items]
Operating lease cost	5,318	[1]
Short-term lease costs	900
Variable lease costs	400
Cost Of Sales [Member]
Leases [Line Items]
Operating lease cost	9,090	[2]
Amortization of right-of-use assets	233
Short-term lease costs	2,600
Variable lease costs	1,100
Interest Expense [Member]
Leases [Line Items]
Interest of lease liabilities	$ 17
[1]	Included in operating lease cost is $ 0.9 million of short-term lease costs and $ 0.4 million of variable lease costs for the year ended December 31, 2019.
[2]	Included in operating lease cost is $ 2.6 million of short-term lease costs and $ 1.1 million of variable lease costs for the year ended December 31, 2019.

Leases (Supplemental Balance Sh

Leases (Supplemental Balance Sheet Information Related to Leases) (Details) $ in Thousands	Dec. 31, 2019USD ($)
Assets
Operating Lease, Right-of-Use Asset	$ 21,684
Finance Lease, Right-of-Use Asset	859	[1]
Total leased assets	22,543
Liabilities
Current, Operating	7,259
Current, Finance	438
Noncurrent, Operating	15,326
Noncurrent, Finance	1,867
Total leased liabilities	24,890
Finance leases, net accumulated depreciation	$ 3,400
[1]	Finance leases are net of accumulated depreciation of $ 3.4 million for December 31, 2019.

Leases (Supplemental Balance _2

Leases (Supplemental Balance Sheet Information Related to Capital Lease Arrangements) (Details) $ in Thousands	Dec. 31, 2019USD ($)
Capital Leased Assets [Line Items]
Gross amounts capitalized	$ 4,229
Accumulated amortization	(3,370)
Net assets under capital leases	859
Buildings [Member]
Capital Leased Assets [Line Items]
Gross amounts capitalized	3,100
Accumulated amortization	(3,100)
Equipment [Member]
Capital Leased Assets [Line Items]
Gross amounts capitalized	1,129
Accumulated amortization	$ (270)

Leases (Supplemental Cash Flow

Leases (Supplemental Cash Flow Information Related to Leases) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019USD ($)
Leases [Abstract]
Operating cash flows from finance leases	$ 17
Operating cash flows from operating leases	9,757
Financing cash flows from finance leases	229
Leased assets obtained in exchange for new finance lease liabilities	755
Leased assets obtained in exchange for new operating lease liabilities	$ 30,411
Weighted-average remaining lease term, Operating leases	4 years 3 months 18 days
Weighted-average remaining lease term, Finance leases	6 years 2 months 12 days
Weighted-average discount rate, Operating leases	4.20%
Weighted-average discount rate, Finance leases	5.30%

Leases (Maturities of Lease Lia

Leases (Maturities of Lease Liabilities) (Details) $ in Thousands	Dec. 31, 2019USD ($)
Leases [Abstract]
Finance Leases, 2020	$ 531
Finance Leases, 2021	478
Finance Leases, 2022	469
Finance Leases, 2023	442
Finance Leases, 2024	348
Finance Leases, Thereafter	697
Finance Leases, Net minimum lease payments	2,965
Finance Leases, Less: interest	660
Finance Leases, Present value of lease liabilities	2,305
Operating Leases, 2020	8,201
Operating Leases, 2021	6,010
Operating Leases, 2022	3,824
Operating Leases, 2023	2,089
Operating Leases, 2024	1,515
Operating Leases, Thereafter	2,537
Operating Leases, Net minimum lease payments	24,176
Operating Leases, Less: interest	1,591
Operating Leases, Present value of lease liabilities	$ 22,585

Leases (Maturities of Lease L_2

Leases (Maturities of Lease Liabilities under ASC 840) (Details) $ in Thousands	Dec. 31, 2018USD ($)
Leases [Abstract]
2019, Capital Leases	$ 399
2020, Capital Leases	331
2021, Capital Leases	279
2022, Capital Leases	279
2023, Capital Leases	279
Thereafter, Capital Leases	976
Net minimum lease payments, Capital Leases	2,543
Less amount representing imputed interest and executory costs	712
Present value of net minimum lease payments	1,831
Less current portion	253
Long-term obligations at end of period	1,578
2019, Operating Leases	9,643
2020, Operating Leases	6,375
2021, Operating Leases	4,650
2022, Operating Leases	2,889
2023, Operating Leases	1,781
Thereafter, Operating Leases	2,368
Net minimum lease payments, Operating Leases	$ 27,706

Miscellaneous Expense (Income_3

Miscellaneous Expense (Income), Net (Narrative) (Details) - USD ($) $ in Thousands	Aug. 03, 2017	Jun. 30, 2019	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Jun. 29, 2018
Pension expense (income)			$ 14,845	$ 14,142	$ (7,474)
Gain on change of control				(2,586)	(127)
Newly available tax regime, resulting in the reduction of interest on these outstanding tax labilities and as a result recorded a gain					4,500
Charge related to interest on the liabilities			$ 200	$ 500	900
PT Ferro Materials Utama ("FMU") [Member]
Business acquisition, percentage of voting interests acquired				66.00%		66.00%
Gain on change of control		$ (2,600)		$ 2,600
Gardenia Quimica S.A. (“Gardenia”) [Member]
Gain on change of control	$ (2,600)				$ 2,600
PT Ferro Materials Utama ("FMU") [Member]
Total ownership				100.00%		100.00%

Miscellaneous Expense (Income_4

Miscellaneous Expense (Income), Net (Components Of Miscellaneous Expense (Income), Net) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Miscellaneous Expense (Income), Net [Abstract]
Pension expense (income)	$ 14,845	$ 14,142	$ (7,474)
Argentina export tax matter	217	507
Argentina export tax matter			(3,549)
Gain on change of control		(2,586)	(127)
Modification of debt		1,046
Dividends/royalty from affiliates, net	(529)	(720)	(993)
Loss (gain) on sale of assets	(1,412)	(514)	747
Contingent consideration payment (adjustment)	(2,723)	(1,637)	1,721
Bank fees	1,798	1,656	1,646
Other, net	(474)	180	596
Total Miscellaneous expense (income), net	$ 11,722	$ 12,074	$ (7,433)

Earnings Per Share (Narrative)

Earnings Per Share (Narrative) (Details) - shares shares in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Earnings Per Share [Abstract]
Anti-dilutive securities excluded from computation of earnings per share	2.1	1.7	1.6

Earnings Per Share (Calculation

Earnings Per Share (Calculations Of Basic And Diluted Earnings Per Share) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Basic earnings per share computation:
Income from continuing operations	$ 35,392	$ 56,920	$ 36,902
Less: Net income attributable to noncontrolling interests from continuing operations	1,087	851	704
Net income attributable to Ferro Corporation from continuing operations	34,305	56,069	36,198
Income (loss) from discontinued operations, net of income taxes	(27,977)	24,026	20,866
Less: Net income attributable to noncontrolling interests from discontinued operations	290	2	10
Net income (loss) attributable to Ferro Corporation from discontinued operations	(28,267)	24,024	20,856
Total	$ 6,038	$ 80,093	$ 57,054
Weighted-average common shares outstanding	82,083	83,940	83,713
Basic earnings per share from continuing operations attributable to Ferro Corporation common shareholders	$ 0.41	$ 0.67	$ 0.43
Diluted earnings per share computation:
Net income attributable to Ferro Corporation common shareholders	$ 34,305	$ 56,069	$ 36,198
Adjustment for income from discontinued operations	(28,267)	24,024	20,856
Total	$ 6,038	$ 80,093	$ 57,054
Weighted-average common shares outstanding	82,083	83,940	83,713
Assumed exercise of stock options	407	772	762
Assumed satisfaction of restricted stock unit conditions	369	301	351
Assumed satisfaction of performance stock unit conditions	32	72	330
Weighted-average diluted shares outstanding	82,891	85,085	85,156
Diluted earnings per share from continuing operations attributable to Ferro Corporation common shareholders	$ 0.41	$ 0.66	$ 0.43

Share Repurchase Program (Detai

Share Repurchase Program (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Oct. 31, 2018
Share Repurchase Program [Abstract]
Stock repurchase program, additional authorized amount	$ 100,000			$ 50,000
Purchase of treasury stock, shares	1,440,678	1,470,791	0
Treasury stock acquired, average cost per share	$ 17.35	$ 19.59
Purchase of treasury stock	$ 25,000	$ 28,807
Stock repurchase program, remaining authorized amount	$ 46,200

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Loss (Changes In Accumulated Other Comprehensive Loss by Component, Net of Tax) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balances	$ 376,631
Ending Balances	360,376	$ 376,631
Accumulated Other Comprehensive Income (Loss) [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balances	(105,361)	(75,468)	$ (106,643)
Other comprehensive income (loss) before reclassifications, before tax	3,538	(13,270)	28,200
Reclassification to earnings: Cash flow hedge loss, before tax	(10,162)	(17,159)	(527)
Reclassification to earnings: Postretirement benefit liabilities gain (loss), before tax	91	(55)	42
Current period other comprehensive income (loss), before tax	(6,533)	(30,484)	27,715
Tax effect	(2,518)	(591)	(3,460)
Current period other comprehensive income (loss), net of tax	(4,015)	(29,893)	31,175
Ending Balances	(109,376)	(105,361)	(75,468)
Postretirement Benefit Liability Adjustments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balances	1,126	1,165	1,141
Other comprehensive income (loss) before reclassifications, before tax
Reclassification to earnings: Cash flow hedge loss, before tax
Reclassification to earnings: Postretirement benefit liabilities gain (loss), before tax	91	(55)	42
Current period other comprehensive income (loss), before tax	91	(55)	42
Tax effect	11	(16)	18
Current period other comprehensive income (loss), net of tax	80	(39)	24
Ending Balances	1,206	1,126	1,165
Foreign Currency Items [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balances	(103,190)	(77,578)	(107,784)
Other comprehensive income (loss) before reclassifications, before tax	6,269	(24,658)	26,181
Reclassification to earnings: Cash flow hedge loss, before tax
Reclassification to earnings: Postretirement benefit liabilities gain (loss), before tax
Current period other comprehensive income (loss), before tax	6,269	(24,658)	26,181
Tax effect	654	954	(4,025)
Current period other comprehensive income (loss), net of tax	5,615	(25,612)	30,206
Ending Balances	(97,575)	(103,190)	(77,578)
Net Gain (Loss) On Cash Flow Hedges [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balances	(3,297)	945
Other comprehensive income (loss) before reclassifications, before tax	(2,731)	11,388	2,019
Reclassification to earnings: Cash flow hedge loss, before tax	(10,162)	(17,159)	(527)
Reclassification to earnings: Postretirement benefit liabilities gain (loss), before tax
Current period other comprehensive income (loss), before tax	(12,893)	(5,771)	1,492
Tax effect	(3,183)	(1,529)	547
Current period other comprehensive income (loss), net of tax	(9,710)	(4,242)	945
Ending Balances	$ (13,007)	$ (3,297)	$ 945

Reporting For Segments (Narrati

Reporting For Segments (Narrative) (Details)	12 Months Ended
	Dec. 31, 2019country
Reporting For Segments [Abstract]
Number of countries other than the U.S. and Germany representing greater than 10% of net sales	0

Reporting For Segments (Net Sal

Reporting For Segments (Net Sales To External Customers By Segment) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Segment Reporting Information [Line Items]
Net sales	$ 245,857	$ 246,291	$ 261,978	$ 264,240	$ 266,492	$ 267,739	$ 273,544	$ 274,448	$ 1,018,366	$ 1,082,223	$ 996,382
Performance Colors And Glass [Member]
Segment Reporting Information [Line Items]
Net sales									648,692	691,196	638,322
Color Solutions [Member]
Segment Reporting Information [Line Items]
Net sales									$ 369,674	$ 391,027	$ 358,060

Reporting For Segments (Segment

Reporting For Segments (Segment's Gross Profit And Reconciliations To Income Before Income Taxes) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total gross profit	$ 75,275	$ 76,186	$ 79,343	$ 78,012	$ 80,470	$ 79,732	$ 90,793	$ 88,740	$ 308,816	$ 339,735	$ 326,719
Selling, general and administrative expenses									212,485	219,947	217,290
Restructuring and impairment charges	$ 3,100	$ 2,100	$ 4,100	$ 1,700	$ 2,300	$ 1,500	$ 2,100	$ 1,200	10,955	7,116	8,523
Other expense, net									41,865	41,622	17,591
Income before income taxes									43,511	71,050	83,315
Operating Segments [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Other cost of sales									369	2,519	3,878
Total gross profit									308,816	339,735	326,719
Performance Colors And Glass [Member] | Operating Segments [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total gross profit									193,508	212,364	209,147
Color Solutions [Member] | Operating Segments [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total gross profit									$ 114,939	$ 124,852	$ 113,694

Reporting For Segments (Summary

Reporting For Segments (Summary of Segment's Expenditures for Long-Lived Assets) (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Segment Reporting Information [Line Items]
Total expenditures for long lived assets	[1]	$ 64,970	$ 80,619	$ 50,552
Performance Colors And Glass [Member] | Discontinued Operations [Member]
Segment Reporting Information [Line Items]
Total expenditures for long lived assets		10,100	5,300	4,700
Corporate Restructuring Charges [Member]
Segment Reporting Information [Line Items]
Total expenditures for long lived assets		2,069	5,715	1,088
Operating Segments [Member]
Segment Reporting Information [Line Items]
Total expenditures for long lived assets		62,901	74,904	49,464
Operating Segments [Member] | Performance Colors And Glass [Member]
Segment Reporting Information [Line Items]
Total expenditures for long lived assets		46,304	49,964	29,108
Operating Segments [Member] | Color Solutions [Member]
Segment Reporting Information [Line Items]
Total expenditures for long lived assets		$ 16,597	$ 24,940	$ 20,356
[1]	Includes capital expenditures for discontinued operation of $ 10.1 million, $ 5.3 million and $ 4.7 million in 2019, 2018 and 2017, respectively, integrated within Performance Colors and Glass.

Reporting For Segments (Summa_2

Reporting For Segments (Summary of Net Sales by Geographic Region) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Segment Reporting Information [Line Items]
Total net sales	$ 245,857	$ 246,291	$ 261,978	$ 264,240	$ 266,492	$ 267,739	$ 273,544	$ 274,448	$ 1,018,366	$ 1,082,223	$ 996,382
United States [Member]
Segment Reporting Information [Line Items]
Total net sales									359,267	379,912	356,483
Germany [Member]
Segment Reporting Information [Line Items]
Total net sales									149,270	148,706	122,808
Other International [Member]
Segment Reporting Information [Line Items]
Total net sales									$ 509,829	$ 553,605	$ 517,091

Reporting For Segments (Summa_3

Reporting For Segments (Summary of Long-Lived Assets by Geographic Region) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Revenues from External Customers and Long-Lived Assets [Line Items]
Total long-lived assets	$ 300,005	$ 275,539
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total long-lived assets	71,617	56,263
Mexico [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total long-lived assets	51,224	32,941
Germany [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total long-lived assets	34,996	35,744
Columbia [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total long-lived assets	32,475	32,587
Other International [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total long-lived assets	$ 109,693	$ 118,004

Unconsolidated Affiliates Acc_3

Unconsolidated Affiliates Accounted For Under the Equity Method (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Unconsolidated Affiliates Accounted For Under the Equity Method [Abstract]
Investment income from equity-method investments		$ 0.1	$ 0.3
Equity-method investments	$ 8	$ 8.2

Unconsolidated Affiliates Acc_4

Unconsolidated Affiliates Accounted For Under the Equity Method (Summarized Condensed Income Statement) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Unconsolidated Affiliates Accounted For Under the Equity Method [Abstract]
Net sales	$ 16,563	$ 18,950	$ 33,851
Gross profit	2,507	3,343	5,655
Income (loss) from continuing operations	(861)	746	(224)
Net income (loss)	$ (689)	$ 596	$ (220)

Unconsolidated Affiliates Acc_5

Unconsolidated Affiliates Accounted For Under the Equity Method (Summarized Balance Sheet) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Unconsolidated Affiliates Accounted For Under the Equity Method [Abstract]
Current assets	$ 13,623	$ 17,305
Non-current assets	4,214	3,356
Current liabilities	(2,994)	(3,832)
Non-current liabilities	$ (161)	$ (339)

Unconsolidated Affiliates Acc_6

Unconsolidated Affiliates Accounted For Under the Equity Method (Transactions with Equity-Method Investees) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Unconsolidated Affiliates Accounted For Under the Equity Method [Abstract]
Sales	$ 7,308	$ 4,898	$ 5,378
Purchases	316	15	2,006
Dividends and interest received	154	415	920
Commission and royalties received	363	$ 305	130
Commissions and royalties paid	$ 11		$ 57

Quarterly Data (Narrative) (Det

Quarterly Data (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Selected Quarterly Financial Data [Line Items]
Restructuring and impairment charges	$ 3,100	$ 2,100	$ 4,100	$ 1,700	$ 2,300	$ 1,500	$ 2,100	$ 1,200	$ 10,955	$ 7,116	$ 8,523
Mark-to-market net losses (gains)	(13,300)				$ 16,500
Tile Coatings [Member]
Selected Quarterly Financial Data [Line Items]
Restructuring and impairment charges	$ 33,500

Quarterly Data (Summary of Quar

Quarterly Data (Summary of Quarterly Financial Information) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Quarterly Data [Abstract]
Net sales	$ 245,857	$ 246,291	$ 261,978	$ 264,240	$ 266,492	$ 267,739	$ 273,544	$ 274,448	$ 1,018,366	$ 1,082,223	$ 996,382
Gross profit	75,275	76,186	79,343	78,012	80,470	79,732	90,793	88,740	308,816	339,735	326,719
Net income (loss)	(30,782)	13,210	11,109	13,878	11,344	16,143	29,861	23,598	7,415	80,946	57,768
Net Income (Loss) Attributable to Ferro Corporation	$ (31,257)	$ 12,820	$ 10,871	$ 13,604	$ 10,976	$ 16,058	$ 29,668	$ 23,391	$ 6,038	$ 80,093	$ 57,054
Earnings (Loss) Attributable to Ferro Corporation Common Shareholders Per Common Share, Basic	$ (0.38)	$ 0.16	$ 0.13	$ 0.16	$ 0.13	$ 0.19	$ 0.35	$ 0.28	$ 0.07	$ 0.95	$ 0.68
Earnings (Loss) Attributable to Ferro Corporation Common Shareholders Per Common Share, Diluted	$ (0.38)	$ 0.16	$ 0.13	$ 0.16	$ 0.13	$ 0.19	$ 0.35	$ 0.27	$ 0.07	$ 0.94	$ 0.67

Schedule II - Valuation And Q_2

Schedule II - Valuation And Qualifying Accounts And Reserves (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Valuation and Qualifying Accounts Disclosure [Line Items]
Valuation allowance release		$ 5,400	$ 1,700	$ 800
Allowance for Possible Losses on Collection of Accounts Receivable [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period	[1]	5,504	7,821	8,166
Additions Charged (Reductions Credited) to Costs and Expenses	[1]	1,086	681	44
Deductions	[1]	(4,487)	(2,642)	(1,253)
Adjustment for Differences in Exchange Rates	[1]	(165)	(356)	864
Balance at End of Period	[1]	1,938	5,504	7,821
Valuation Allowance on Net Deferred Tax Assets [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period	[1]	25,596	32,579	37,354
Additions Charged (Reductions Credited) to Costs and Expenses	[1]
Deductions	[1],[2]	(13,978)	(5,617)	(5,648)
Adjustment for Differences in Exchange Rates	[1]	(184)	(1,366)	873
Balance at End of Period	[1]	$ 11,434	$ 25,596	$ 32,579
[1]	Schedule II is presented on a total Ferro basis, inclusive of discontinued operations.
[2]	Included within this deduction is $ 5.4 million, $ 1.7 million and $ 0.8 million for the years ended December 31, 2019, 2018, and 2017 respectively, of valuation allowance release, resulting from the conclusion that the underlying deferred tax assets are more likely than not to be realized.