Ferro (FOE) 10-K 27 Feb 19 2018 FY Annual report Financial data

Document And Entity Information

Document And Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2018	Jan. 31, 2019	Jun. 30, 2018
Document And Entity Information [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2018
Document Fiscal Year Focus	2,018
Document Fiscal Period Focus	FY
Trading Symbol	foe
Entity Registrant Name	FERRO CORP
Entity Central Index Key	35,214
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	Yes
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		82,705,878
Entity Public Float			$ 1,728,453,000

Consolidated Statements Of Oper

Consolidated Statements Of Operations - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Consolidated Statements Of Operations [Abstract]
Net sales	$ 1,612,408	$ 1,396,742	$ 1,145,292
Cost of sales	1,156,475	980,521	788,914
Gross profit	455,933	416,221	356,378
Selling, general and administrative expenses	278,566	265,418	227,286
Restructuring and impairment charges	13,295	11,409	15,907
Other expense (income):
Interest expense	33,371	27,754	21,547
Interest earned	(674)	(901)	(630)
Foreign currency losses, net	8,187	6,554	12,906
Loss on extinguishment of debt	3,226	3,905
Miscellaneous expense (income), net	15,970	(8,436)	16,917
Income before income taxes	103,992	110,518	62,445
Income tax expense	23,046	52,750	17,868
Income from continuing operations	80,946	57,768	44,577
Loss from discontinued operations, net of income taxes			(64,464)
Net income (loss)	80,946	57,768	(19,887)
Less: Net income attributable to noncontrolling interests	853	714	930
Net income (loss) attributable to Ferro Corporation common shareholders	80,093	57,054	(20,817)
Amounts attributable to Ferro Corporation:
Income from continuing operations, net of income tax	80,093	57,054	43,647
Loss from discontinued operations, net of income taxes			(64,464)
Income (loss) attributable to Ferro Corporation	$ 80,093	$ 57,054	$ (20,817)
Weighted-average common shares outstanding	83,940	83,713	83,298
Incremental common shares attributable to performance shares, deferred stock units, restricted stock units, and stock options	1,145	1,443	1,612
Weighted-average diluted shares outstanding	85,085	85,156	84,910
Basic earnings (loss):
Continuing operations	$ 0.95	$ 0.68	$ 0.52
Discontinued operations			(0.77)
Total	0.95	0.68	(0.25)
Diluted earnings (loss):
Continuing operations	0.94	0.67	0.51
Discontinued operations			(0.76)
Total	$ 0.94	$ 0.67	$ (0.25)

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Consolidated Statements of Comprehensive (Loss) [Abstract]
Net income (loss)	$ 80,946	$ 57,768	$ (19,887)
Other comprehensive (loss) income, net of income tax:
Foreign currency translation (loss) income	(26,113)	30,558	(45,986)
Cash flow hedging instruments unrealized (loss) gain	(4,242)	945
Postretirement benefit liabilities (loss) gain	(39)	24	330
Other comprehensive (loss) income, net of income tax	(30,394)	31,527	(45,656)
Total comprehensive income (loss)	50,552	89,295	(65,543)
Less: Comprehensive income attributable to noncontrolling interests	352	1,066	599
Comprehensive income (loss) attributable to Ferro Corporation	$ 50,200	$ 88,229	$ (66,142)

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Current assets
Cash and cash equivalents	$ 104,301	$ 63,551
Accounts receivable, net	306,882	354,416
Inventories	356,998	324,180
Other receivables	91,143	67,137
Other current assets	23,960	16,448
Total current assets	883,284	825,732
Other assets
Property, plant and equipment, net	381,341	321,742
Goodwill	216,464	195,369
Intangible assets, net	184,953	187,616
Deferred income taxes	103,488	108,025
Other non-current assets	42,930	43,718
Total assets	1,812,460	1,682,202
Current liabilities
Loans payable and current portion of long-term debt	10,260	25,136
Accounts payable	256,573	211,711
Accrued payrolls	39,989	48,201
Accrued expenses and other current liabilities	77,995	70,151
Total current liabilities	384,817	355,199
Other liabilities
Long-term debt, less current portion	811,137	726,491
Postretirement and pension liabilities	173,046	166,680
Other non-current liabilities	57,611	77,152
Total liabilities	1,426,611	1,325,522
Equity
Common stock, par value $1 per share; 300.0 million shares authorized; 93.4 million shares issued; 83.0 million and 84.0 million shares outstanding at December 31, 2018, and December 31, 2017, respectively	93,436	93,436
Paid-in capital	298,123	302,158
Retained earnings	255,978	171,744
Accumulated other comprehensive loss	(105,361)	(75,468)
Common shares in treasury, at cost	(165,545)	(147,056)
Total Ferro Corporation shareholders' equity	376,631	344,814
Noncontrolling interests	9,218	11,866
Total equity	385,849	356,680
Total liabilities and equity	$ 1,812,460	$ 1,682,202

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - $ / shares	Dec. 31, 2018	Dec. 31, 2017
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	83,000,000	84,000,000

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 (Loss) Income [Member]	Non-controlling Interests [Member]	Total
Beginning Balances at Dec. 31, 2015	$ (166,020)	$ 93,436	$ 314,854	$ 135,507	$ (61,318)	$ 7,822	$ 324,281
Beginning Balances, shares at Dec. 31, 2015	9,431,000
Net income (loss)				(20,817)		930	(19,887)
Other comprehensive (loss)					(45,325)	(331)	(45,656)
Purchase of treasury stock	$ (11,429)						$ (11,429)
Purchase of treasury stock, shares	1,175,000						1,175,437
Stock-based compensation transactions	$ 16,513		(8,288)				$ 8,225
Stock-based compensation transactions, shares	(610,000)
Distributions to noncontrolling interests						(502)	(502)
Ending Balances at Dec. 31, 2016	$ (160,936)	93,436	306,566	114,690	(106,643)	7,919	255,032
Ending Balances, shares at Dec. 31, 2016	9,996,000
Net income (loss)				57,054		714	57,768
Other comprehensive (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 (loss)				80,093		853	80,946
Other comprehensive (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

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Cash flows from operating activities
Net income (loss)	$ 80,946	$ 57,768	$ (19,887)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Loss (gain) on sale of assets and businesses	164	(852)	(2,764)
Depreciation and amortization	53,974	50,085	46,805
Interest amortization	3,577	3,496	1,353
Restructuring and impairment charges	4,084	7,593	50,868
Loss on extinguishment of debt	3,226	3,905
Provision for allowance for doubtful accounts	681	44	1,383
Retirement Benefits	9,221	(6,417)	14,436
Deferred income taxes	(3,720)	23,490	(11,451)
Stock-based compensation	8,441	11,770	7,245
Changes in current assets and liabilities, net of effects of acquisitions:
Accounts receivable	19,885	(25,852)	(21,893)
Inventories	(33,922)	(46,962)	(10,271)
Other receivables and other current assets	(1,444)	(7,099)	(3,006)
Accounts payable	35,887	26,150	1,162
Accrued expenses and other current liabilities	164	(22,398)	11,626
Other operating activities	1,629	10,069	(2,976)
Net cash provided by operating activities	182,793	84,790	62,630
Cash flows from investing activities
Capital expenditures for property, plant and equipment and other long-lived assets	(80,619)	(50,552)	(24,945)
Proceeds from sale of assets			3,634
Proceeds from sale of equity method investment		2,268
Collections of financing receivables	7,020
Business acquisitions, net of cash acquired	(74,954)	(131,194)	(129,511)
Other investing activities	37	567
Net cash (used in) investing activities	(148,516)	(178,911)	(150,822)
Cash flows from financing activities
Net (repayments) borrowings under loans payable	(19,077)	(19,634)	4,596
Proceeds from revolving credit facility - 2014 Credit Facility		15,628	355,743
Principal payments on revolving credit facility - 2014 Credit Facility		(327,183)	(214,188)
Proceeds from term loan facility - Credit Facility		623,827
Principal payments on term loan facility - 2014 Credit Facility		(243,250)	(53,000)
Principal payments on term loan facility - Credit Facility	(304,060)	(4,872)
Principal payments on term loan facility - Amended Credit Facility	(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	240,035
Principal payments on revolving credit facility - Amended Credit Facility	(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)	(711)
Acquisition related contingent consideration payment	(9,464)	(1,315)
Proceeds from the exercise of stock options	764	4,526	1,140
Purchase of treasury stock	(28,807)		(11,429)
Other financing activities	(8,448)	(3,166)	(154)
Net cash provided by financing activities	9,367	108,363	81,997
Effect of exchange rate changes on cash and cash equivalents	(2,894)	3,727	(6,603)
Increase (decrease) in cash and cash equivalents	40,750	17,969	(12,798)
Cash and cash equivalents at beginning of period	63,551	45,582	58,380
Cash and cash equivalents at end of period	104,301	63,551	45,582
Cash paid during the period for:
Interest	33,910	26,850	17,486
Income taxes	$ 36,789	$ 25,662	$ 19,734

Our Business

Our Business	12 Months Ended
	Dec. 31, 2018
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 (1)  Performance Colors and Glass  Color Solutions (1) Tile Coating Systems and Porcelain Enamel are combined into one reportable segment, Performance Coatings, 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 sanitary. As discussed in Note 4, in the third quarter of 2016, we completed the disposition of the Europe-based Polymer Additives business and have classified the related operating results, net of income tax, as discontinued operations in the accompanying consolidated statements of operations for the year ended December 31, 2016. 

Significant Accounting Policies

Significant Accounting Policies	12 Months Ended
	Dec. 31, 2018
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 the Other non-current assets on our 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 $40.2 million for 2018, $36.4 million for 2017 and $27.3 million for 2016. 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 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 other comprehensive income or loss and reclassified from accumulated other comprehensive loss 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 other comprehensive income or loss. 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:      2018 2017 2016  (Dollars in thousands)  Allowance for doubtful accounts $ 5,504 $ 7,821 $ 8,166  Bad debt expense 681 44 1,383 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 to 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. Recently Adopted Accounting Pronouncement On April 1, 2018, we adopted Financial Accounting Standards Board (“FASB”) Accounting Standards Update (“ASU”) 2017-12, Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities. ASU 2017-12 provides guidance to better align an entity’s risk management activities and financial reporting for hedging relationships through changes to both the designation and measurement guidance for qualifying hedging relationships and the presentation of hedge results. The adoption of this ASU did not have an impact to the opening balance of Retained earnings. On April 1, 2018, we adopted FASB ASU 2018-03, Technical Corrections and Improvements to Financial Instruments - Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities. ASU 2018-03 provides targeted improvements to address certain aspects of recognition, measurement presentation, and disclosure of financial instruments. The adoption of ASU 2018-03 did not have a material impact on the Company’s consolidated financial statements. On January 1, 2018, we adopted FASB ASU 2017-09, Compensation – Stock Compensation: (Topic 718): Scope of Modification Accounting. ASU 2017-09 provides guidance about which changes to the terms or conditions of a share-based payment award require an entity to apply modification accounting in Topic 718. This new guidance would only impact our consolidated financial statements if, in the future, we modified the terms of any of our share-based awards. The adoption of ASU 2017-09 did not have a material impact on the Company’s consolidated financial statements. On January 1, 2018, we adopted FASB ASU 2017-07, Compensation – Retirement Benefits: (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Costs. ASU 2017-07 requires that an employer report the service cost component in the same line item as other compensation costs arising from services rendered during the period. The other components of net benefit costs are to be presented in the income statement separately from the service cost component and outside a subtotal of income from operations. This ASU also allows only the service cost component of net benefit costs to be eligible for capitalization. We adopted this ASU using the retrospective approach. This resulted in the reclassification of income of $6.8 million from Selling, general and administrative expenses to Other expense, (income) in our consolidated statement of operations for the year ended December 31, 2017, and a reclassification of loss of $14.4 million from Selling, general and administrative expenses and a loss of $5.2 million from Cost of Sales to Other expense, (income) in our consolidated statement of operations for the year ended December 31, 2016. The Company used a practical expedient where the amount disclosed in our Retirement Benefits footnote for the prior year comparative period was the basis for the estimation for applying the retrospective presentation requirements. Other than this reclassification, the adoption of ASU 2017-07 did not have an impact on the Company’s consolidated financial statements. On January 1, 2018, we adopted FASB ASU 2017-01, Business Combinations: (Topic 805): Clarifying the Definition of a Business. ASU 2017-01 is intended to clarify the definition of a business with the objective of adding guidance to assist entities in evaluating whether transactions should be accounted for as acquisitions (or dispositions) of assets or businesses. The adoption of ASU 2017-01 did not have a material impact on the Company’s consolidated financial statements. On January 1, 2018, we adopted FASB ASU 2016-16, Income Taxes: (Topic 740): Intra-Entity Transfers of Assets Other Than Inventory. ASU 2016-16 is intended to improve the accounting for the income tax consequences of intra-entity transfers of assets other than inventory and requires the recognition of the income tax consequences of an intra-entity transfer of an asset, other than inventory, when the transfer occurs. We adopted this ASU using the modified retrospective method. The impact of adopting this guidance on the Company’s consolidated financial statements resulted in an increase to Retained earnings of $4.1 million and Deferred income taxes of $4.7 million and a decrease to Other receivables of $0.6 million on January 1, 2018. On January 1, 2018, we adopted FASB ASU 2016-15, Statement of Cash Flow: (Topic 230): Classification of Certain Cash Receipts and Cash Payments. ASU 2016-15 is intended to address eight specific cash flow issues with the objective of reducing the existing diversity in practice. Adoption of ASU 2016-15 did not have a material effect on our consolidated financial statements.  On January 1, 2018, we adopted FASB ASU 2014-09, Revenue from Contracts with Customers: (Topic 606) . This ASU replaces nearly all existing U.S. GAAP guidance on revenue recognition. The standard prescribes a five-step model for recognizing revenue, the application of which require significant judgment. We have completed our assessment and review of specific contracts and have adopted this ASU using the modified retrospective method with no impact to the opening Retained earnings balance. New Accounting Standards Not Yet Adopted In August 2018, the FASB issued ASU 2018-14, Compensation-Retirement Benefits-Defined Benefit Plans-General (Subtopic 715-20): Disclosure Framework-Changes to the Disclosure Requirements for Defined Benefit Plans. ASU 2018-14 modifies disclosure requirements for employers that sponsor defined benefit pension or other postretirement plans. This pronouncement is effective for fiscal years beginning after December 15, 2020. The Company is in the process of assessing the impact that the adoption of this ASU will have on our consolidated financial statements. In August 2018, the FASB issued ASU 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework-Changes to the Disclosure Requirements for Fair Value Measurement. ASU 2018-13 modifies the disclosure requirements on fair value measurements. This pronouncement is effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. The Company has adopted this standard effective January 1, 2019, and will update the disclosures for the fair value measurements in accordance with the standard updates. In February 2018, the FASB issued ASU 2018-02, Income Statement – Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income. ASU 2018-02 allows a reclassification from Accumulated Other Comprehensive (Loss) Income to Retained Earnings for stranded tax effects resulting from the Tax Cuts and Jobs Act and requires certain disclosures about stranded tax effects. This pronouncement is effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. The Company has elected not to reclassify the stranded tax effects due to the Tax Cuts and Jobs Act within Accumulated Other Comprehensive Loss, as such reclassification is not deemed beneficial to users of the financial statements. In January 2017, the FASB issued ASU 2017-04, Intangibles – Goodwill and Other: (Topic 350): Simplifying the Test for Goodwill Impairment. ASU 2017-04 is intended to simplify the subsequent measurement of goodwill by eliminating Step 2 from the current goodwill impairment test. This pronouncement is effective for the annual or any interim goodwill impairment tests conducted in fiscal years beginning after December 15, 2019. The Company is in the process of assessing the impact that the adoption of this ASU will have on our consolidated financial statements.  In February 2016, the FASB issued ASU 2016-02, Leases: (Topic 842). 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. In July 2018, the FASB issued ASU 2018-11, Targeted Improvements. This ASU provides 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 . The amendments in ASU 2018-11 are effective for fiscal years beginning after December 15, 2018, and interim periods within those fiscal years.  The Company adopted this standard effective January 1, 2019, using this new transition method under ASU 2018-11. We will elect the package of practical expedients permitted under the transition guidance, which allows us to carryforward our historical lease classification, our assessment on whether a contract is or contains a lease, and our initial direct costs for any leases that exist prior to adoption of the new standard. We will also elect to combine lease and non-lease components and to keep leases with an initial term of 12 months or less off the balance sheet. The Company has substantially completed the process of assessing the impact the adoption of this ASU will have on our consolidated financial statements. We estimate the impact to be $28 million to $30 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, we do not expect the new standard to have a material impact on our remaining consolidated financial statements. No other new accounting pronouncements issued or with effective dates during fiscal 2018 had or are expected to have a material impact of the Company’s consolidated financial statement.

Revenue

Revenue	12 Months Ended
	Dec. 31, 2018
Revenue [Abstract]
Revenue	3. Revenue  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 Coatings $ 475,435 $ 49,050 $ 108,623 $ 100,818 $ 733,926  Performance Colors and Glass 235,238 157,963 71,124 23,130 487,455  Color Solutions 142,102 172,901 41,642 34,382 391,027  Total net sales $ 852,775 $ 379,914 $ 221,389 $ 158,330 $ 1,612,408   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 Coatings $ 346,199 $ 46,468 $ 94,722 $ 106,640 $ 594,029  Performance Colors and Glass 203,280 155,284 64,853 21,236 444,653  Color Solutions 134,122 154,730 36,343 32,865 358,060  Total net sales $ 683,601 $ 356,482 $ 195,918 $ 160,741 $ 1,396,742   Revenues disaggregated by geography and reportable segment for the year ended December 31, 2016, follow:     EMEA United States Asia Pacific Latin America Total  (Dollars in thousands)  Performance Coatings $ 289,780 $ 46,063 $ 89,573 $ 101,565 $ 526,981  Performance Colors and Glass 160,475 132,432 59,121 19,436 371,464  Color Solutions 64,800 121,692 30,770 29,585 246,847  Total net sales $ 515,055 $ 300,187 $ 179,464 $ 150,586 $ 1,145,292 

Discontinued Operations

Discontinued Operations	12 Months Ended
	Dec. 31, 2018
Discontinued Operations [Abstract]
Discontinued Operations	4. Discontinued Operations  During 2016, the Company completed the disposition of the Europe-based Polymer Additives business to Plahoma Two AG, an affiliate of the LIVIA Group. The Company made a capital contribution of €12 million (approximately $13.6 million) to its subsidiaries that owned the assets prior to the close of the sale. In 2016, an impairment charge of $50.9 million was recorded under ASC Topic 360 Property, Plant and Equipment. The charge was calculated as the difference of the executed transaction price and the carrying value of the assets. The impairment charge included $1.1 million associated with the reclassification of foreign currency translation loss from Accumulated other comprehensive loss. The Europe-based Polymer Additives operating results, net of income tax, are classified as discontinued operations in the accompanying consolidated statements of operations for the year ended December 31, 2016. The table below summarizes results for the Europe-based Polymer Additives assets, for the year ended December 31, 2016, which is 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 each business to consolidated net assets excluding debt.      2016   Net sales $ 18,481  Cost of sales 28,473  Gross loss (9,992)  Selling, general and administrative expenses 3,094  Restructuring and impairment charges 50,902  Interest expense 325  Miscellaneous (income), net (392)  Loss from discontinued operations before income taxes (63,921)  Income tax expense 543  Loss from discontinued operations, net of income taxes $ (64,464) 

Aquisitions

Aquisitions	12 Months Ended
	Dec. 31, 2018
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) . The information included herein has been prepared based on the preliminary allocation of the purchase price using estimates of 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. As of December 31, 2018, the purchase price allocation is subject to further adjustment until all information is fully evaluated by the Company. The Company preliminarily 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 sheet. UWiZ Technology Co., Ltd. On September 25, 2018, the Company acquired 100% of the equity interests of UWiZ Technology Co., Ltd. (“UWiZ”) for TWD823 .4 million (approximately $26.9 million) in cash . The information included herein has been prepared based on the preliminary allocation of the purchase price using estimates of 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. As of December 31, 2018, the purchase price allocation is subject to further adjustment until all information is fully evaluated by the Company. The Company preliminarily 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 sheet. 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 (approximately $14.0 million) in cash . The information included herein has been prepared based on the preliminary allocation of the purchase price using estimates of 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. As of December 31, 2018, the purchase price allocation is subject to further adjustment until all information is fully evaluated by the Company. The Company preliminarily 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 sheet. 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 . The information included herein has been prepared based on the preliminary allocation of the purchase price using estimates of 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. As of December 31, 2018, the purchase price allocation is subject to further adjustment until all information is fully evaluated by the Company. The Company preliminarily 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 sheet. 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% . 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. Endeka Group On November 1, 2017, the Company acquired 100% of the equity interests of Endeka Group (“Endeka”), a global producer of high-value coatings and key raw materials for the ceramic tile market, 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 acquired business contributed net sales of $111.5 million and $19.4 million for the year ended December 31, 201 8 and 2017, respectively, and net income attributable to Ferro Corporation of $14. 1 million for the year ended December 31, 2018 and net loss attributable to Ferro Corporation of $1.7 million for the year ended December 31, 2017.  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. Gardenia Quimica S.A. On August 3, 2017, the Company acquired a majority interest in Gardenia Quimica S.A. (“Gardenia”) for $3.0 million . 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. 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. 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 acquired business contributed net sales of $28.6 million and $18.2 million for the year ended December 31, 2018 and 2017, respectively, and net loss attributable to Ferro Corporation of $5. 5 million and $2.2 million for the year ended December 31, 2018 and 2017, respectively. The net loss attributable to Ferro Corporation was primarily driven by acquired intangible asset amortization costs of $3.9 million and $1.6 million for the year ended December 31, 201 8 and 2017, respectively , and by the amortization of inventory step up costs of $1.1 million for the year end ed December 31, 2017. Dip-Tech incurred research and development costs of $5.9 million and $2.6 million for the year ended December 31, 2018 and 2017, respectively. 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 sheet. 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 Performance Coatings 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 sheet. Cappelle Pigments NV On December 9, 2016, the Company acquired 100% of the equity interests of Belgium-based Cappelle Pigments NV (“Cappelle”), a leader in specialty, high-performance inorganic and organic pigments used in coatings, inks and plastics, for €49. 8 million (approximately $52.7 million), including the assumption of debt of €9.8 million (approximately $10.4 million) . The acquired business contributed net sales of $71.8 million, $71.8 million and $2.2 million for the year ended December 31, 2018, 2017, and 2016, respectively. The acquired business contributed net income attributable to Ferro Corporation of $6.4 million and $5.4 million for the year ended December 31, 2018 and 2017, respectively, and net loss attributable to Ferro Corporation of $1.8 million for the year ended December 31, 2016 . 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 $27. 7 million of net working capital, $25. 0 million of personal and real property, $3.8 million of goodwill and $3.8 million of a deferred tax liability on the consolidated balance sheet. Electro-Science Laboratories, Inc. On October 31, 2016, the Company acquired 100% of the equity interests of Electro-Science Laboratories, Inc. (“ESL”), a leader in electronic packaging materials for $78. 5 million. ESL is headquartered in King of Prussia, Pennsylvania. The acquisition of ESL enhances the Company’s position in the electronic packaging materials space with complementary products, and offers a platform for growth in our Performance Colors and Glass segment. ESL produces thick-film pastes and ceramics tape systems that enable important functionality in a wide variety of industrial and consumer applications. The acquired business contributed net sales of $83.0 million, $44.3 million, and $6.1 million for the year ended December 31, 2018, 2017 and 2016, respectively. The acquired business contributed net income attributable to Ferro Corporation of $18.2 million, $5.1 million and $0.5 million for the year ended December 31, 201 8, 2017, and 2016, respectively. The Company incurred acquisition costs of $0.3 million for the year ended December 31, 201 7 and $1.9 million for the year ended December 31, 2016, 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 $39.7 million of intangible assets, $19. 0 million of goodwill, $18.9 million of net working capital, $2.9 million of personal and real property and, $2.0 million of a deferred tax liability on the consolidated balance sheet. Delta Performance Products, LLC On August 1, 2016, the Company acquired certain assets of Delta Performance Products, LLC (“Delta”), for a cash purchase price of $4.4 million. 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 $3.2 million of amortizable intangible assets, $0.6 million of net working capital, $0.4 million of goodwill and, $0.2 million of a deferred tax asset on the consolidated balance sheet. Pinturas Benicarló, S.L. On June 1, 2016, the Company acquired 100% of the equity interests of privately held Pinturas Benicarló, S.L. (“Pinturas”) for €16. 5 million in cash (approximately $18. 4 million). 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 $8.8 million of amortizable intangible assets, $7. 7 million of net working capital, $3.9 million of goodwill, $2. 7 million of a deferred tax liability and, $0.7 million of personal and real property on the consolidated balance sheet. Ferer Dis Ticaret Ve Kimyasallar Anonim Sirketi A.S.  On January 5, 2016, the Company acquired 100% of the equity interests of privately held Istanbul-based Ferer Dis Ticaret Ve Kimyasallar Anonim Sirketi A.S. (“Ferer”) for $9.4 million in cash. 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 $4.5 million of goodwill, $3.3 million of amortizable intangible assets, $1.7 million of net working capital, $0.7 million of a deferred tax liability, and $0.6 million of personal and real property on the consolidated balance sheet.

Inventories

Inventories	12 Months Ended
	Dec. 31, 2018
Inventories [Abstract]
Inventories	6. Inventories  Inventory at December 31 consisted of the following:    2018 2017  (Dollars in thousands)  Raw materials $ 116,219 $ 112,300  Work in process 55,884 39,454  Finished goods 184,895 172,426  Total inventories $ 356,998 $ 324,180 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 $2.1 million for 2018, $1.2 million for 2017, and $0.8 million for 2016. We had on hand precious metals owned by participants in our precious metals consignment program of $55.2 million at December 31, 2018, and $37.7 million at December 31, 2017, measured at fair value based on market prices for identical assets.

Property, Plant And Equipment

Property, Plant And Equipment	12 Months Ended
	Dec. 31, 2018
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:    2018 2017   (Dollars in thousands)   Land $ 55,501 $ 48,566  Buildings 214,963 199,076  Machinery and equipment 553,855 548,864  Construction in progress 80,410 28,125  Total property, plant and equipment 904,729 824,631  Total accumulated depreciation (523,388) (502,889)  Property, plant and equipment, net $ 381,341 $ 321,742 Depreciation expense was $38.1 million for 2018, $36.9 million for 2017, and $37.9 million for 2016. Noncash investing activities for capital expenditures, consisting of new capital leases during the year and unpaid capital expenditure liabilities at year end, were $13.6 million for 2018, $8.8 million for 2017, and $5.0 million for 2016. As discussed in Note 4, the Company completed the disposition of the Europe-based Polymer Additives business in 2016. In 2016, an impairment charge of $50.9 million was recorded under ASC Topic 360 Property, Plant and Equipment. The charge was calculated as the difference of the executed transaction price and the carrying value of the assets and is included in Loss from discontinued operations, net of income taxes, in our consolidated statements of operations for the year ended December 31, 2016. The following table presents information about the Company’s impairment charges on assets that were required to be measured on a fair value basis for the year ended December 31, 2016. The table also indicates the level within the fair value hierarchy of the valuation techniques used by the Company to determine the fair value:     Fair Value Measurements Using Total  Description Level 1 Level 2 Level 3 Total (Losses)  (Dollars in thousands)  December 31, 2016 $ — $ — $ — $ — $ (50,902)   The inputs to the valuation techniques used to measure fair value are classified into the following categories: Level 1: Quoted market prices in active markets for identical assets or liabilities. Level 2: Observable market-based inputs or unobservable inputs that are corroborated by market data. Level 3: Unobservable inputs that are not corroborated by market data. During 2016, we recorded a $3.9 million gain on sale from the sale proceeds of a closed site in Australia which was recorded in Miscellaneous expense (income), net in our consolidated statements of operations for the year ended December 31, 2016.

Goodwill And Other Intangible A

Goodwill And Other Intangible Assets	12 Months Ended
	Dec. 31, 2018
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  Performance Color Colors and  Coatings Solutions Glass Total  (Dollars in thousands)  Goodwill, net at December 31, 2016 $ 28,090 40,421 79,785 148,296  Acquisitions 5,970 (2) 328 (4) 31,616 (1), (3) 37,914  Foreign currency adjustments 4,176 1,786 3,197 9,159  Goodwill, net at December 31, 2017 38,236 42,535 114,598 195,369  Acquisitions 8,171 (6) 8,857 (8) 8,530 (5), (7) 25,558  Foreign currency adjustments (2,055) (847) (1,561) (4,463)  Goodwill, net at December 31, 2018 $ 44,352 $ 50,545 $ 121,567 $ 216,464   (1) During 2017, the Company recorded a purchase price adjustment within the measurement period for goodwill related to the ESL acquisition. (2) During 2017, the Company recorded goodwill related to the SPC and Gardenia acquisitions. (3) During 2017, the Company recorded goodwill related to the Dip-Tech acquisition. (4) During 2017, the Company recorded a purchase price adjustment within the measurement period for goodwill related to the Cappelle acquisition. (5) During 2018, the Company recorded a purchase price adjustment within the measurement period for goodwill related to the Dip-Tech acquisition. (6) During 2018, the Company recorded goodwill related to the FMU acquisition and recorded goodwill related to the Quimicer acquisition. (7) During 2018, the Company recorded goodwill related to the MRA acquisition. (8) During 2018, the Company recorded goodwill related to the UWiZ and Diegel acquisitions.  Refer to Note 5 for additional details on acquisitions mentioned above.     December 31, December 31,  2018 2017  (Dollars in thousands)  Goodwill, gross $ 274,931 $ 253,836  Accumulated impairment losses (58,467) (58,467)  Goodwill, net $ 216,464 $ 195,369  The significant assumptions and ranges of assumptions we used in our impairment analyses of goodwill follow:      Significant Assumptions 2018 2017  Weighted-average cost of capital 13.0% - 14.75 % 11.0% - 13.5 %  Residual growth rate 3.0 % 3.0 % During the fourth quarter of 2018 and 2017, 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, 2018, and October 31, 2017, respectively. We performed step 1 of the annual impairment test as defined in ASC Topic 350, Intangibles - Goodwill and Other . During our 2018 and 2017 assessment, the result of the goodwill impairment test was that there were no indicators of impairment. During our 2016 assessment, an impairment indicator was identified within our Tile Coating Systems reporting unit, a component of our Performance Coatings segment. The impairment indicator was the current and forecasted performance of the reporting unit in total. We compared the carrying value against the fair value, and determined that the carrying value exceeded the fair value. As a result, an impairment loss of $13.2 million has been included in restructuring and impairment charges in the consolidated statement of operations for the year ended December 31, 2016. The Company is not aware of any events or circumstances that occurred between the annual assessment date and December 31, 2018, which would require further testing of goodwill for impairment.     Fair Value Measurements Using Total  Description Level 1 Level 2 Level 3 Total (Losses)  (Dollars in thousands)  December 31, 2016 $ — $ — $ — $ — $ (13,198)  A mortizable intangible assets at December 31 consisted of the following:    Estimated  Economic Life 2018 2017  (Dollars in thousands)  Gross amortizable intangible assets:  Patents 10 - 16 years $ 5,462 $ 5,279  Land rights 20 - 40 years 4,773 4,947  Technology/know-how and other 1 - 30 years 132,084 131,070  Customer relationships 10 - 20 years 100,368 93,500  Total gross amortizable intangible assets 242,687 234,796  Accumulated amortization:  Patents (5,440) (5,226)  Land rights (2,909) (2,883)  Technology/know-how and other (48,898) (45,214)  Customer relationships (17,306) (11,114)  Total accumulated amortization (74,553) (64,437)  Amortizable intangible assets, net $ 168,134 $ 170,359 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 $ 15.8 million for 2018, $13.1 million for 2017, and $8.9 million for 2016. Amortization expense for amortizable intangible assets is expected to be approximately $16.7 million for 2019, $15.5 million for 2020, $14.5 million for 2021, $14.3 million for 2022, and $14.1 million for 2023. Indefinite-lived intangible assets at December 31 consisted of the following:     2018 2017  (Dollars in thousands)  Indefinite-lived intangibles assets:  Trade names and trademarks $ 16,819 $ 17,257  

Debt And Other Financing

Debt And Other Financing	12 Months Ended
	Dec. 31, 2018
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:       2018 2017  (Dollars in thousands)  Loans payable $ 50 $ 16,360  Current portion of long-term debt 10,210 8,776  Loans payable and current portion of long-term debt $ 10,260 $ 25,136  Long-term debt at December 31 consisted of the following:     2018 2017  (Dollars in thousands)   Term loan facility, net of unamortized issuance costs, maturing 2024 (1) $ 809,022 $ 645,242  Revolving credit facility — 78,000  Capital lease obligations 3,963 4,913  Other notes 8,362 7,112  Total long-term debt 821,347 735,267  Current portion of long-term debt (10,210) (8,776)  Long-term debt, less current portion $ 811,137 $ 726,491   (1) The carrying value of the term loan facility, maturing 2024, is net of unamortized debt issuance costs of $4.8 million at December 31, 2018, and $7.5 million at December 31, 2017. The annual maturities of long-term debt for each of the five years after December 31, 2018, are as follows (in thousands):     2019 $ 10,575  2020 9,671  2021 9,393  2022 10,203  2023 9,131  Thereafter 778,077  Total maturities of long-term debt 827,050  Unamortized issuance costs on Term loan facility (4,828)  Imputed interest and executory costs on capitalized lease obligations (875)  Total long-term debt $ 821,347  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”), (c) provided new tranches of term loans (“Tranche B-2 Loans” and “Tranche B-3 Loans”) denominated in U.S. dollars and 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 2023 , a $355 million secured term loan facility with a maturity of February 2024 , a $235 million secured term loan facility with a maturity of February 2024 and a $230 million secured term loan facility with a maturity of February 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, 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. 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) 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, 2018, there were no borrowings under the 2018 Revolving Credit Facility. After reductions for outstanding letters of credit secured by these facilities, we had $495.3 million of additional borrowings available under the revolving credit facilities at December 31, 2018. 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, 2018, 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 years, a $357.5 million secured term loan facility with a term of seven years and a €250 million secured Euro term loan facility with a term of seven years. 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) 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) 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 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 years and a $300 million secured term loan facility with a term of seven years from the original issuance date (the “2014 Credit Facility”) 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, 2018, was immaterial. The program, whose maximum capacity is 100 million Euro, is scheduled to expire in December 2023 . Generally, at the transfer date, the Company received 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. At December 31, 2018 , the outstanding principal amount of receivables sold under this program was $71.3 million. The carrying amount of deferred purchase price was $23.0 million and is recorded in Other Receivables.    2018  (Dollars in thousands)  Trade accounts receivable sold to financial institutions $ 89,894  Cash proceeds from financial institutions 57,316  Trade accounts receivable collected to be remitted (1) 11,552 (1) Included in Accrued expense and other current liabilities 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 $ 41.4 million at December 31, 2018, and $64. 5 million at December 31, 2017. The unused portions of these lines provided additional liquidity of $ 30.3 million at December 31, 2018, and $39. 4 million at December 31, 2017.

Financial Instruments

Financial Instruments	12 Months Ended
	Dec. 31, 2018
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, 2018  Carrying Fair Value  Amount Total Level 1 Level 2 Level 3  (Dollars in thousands)  Cash and cash equivalents $ 104,301 $ 104,301 $ 104,301 $ — $ —  Loans payable (50) (50) — (50) —  Term loan facility - Amended Credit Facility (1) (809,022) (796,796) — (796,796) —  Other long-term notes payable (8,362) (5,258) — (5,258) —  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) —      December 31, 2017  Carrying Fair Value  Amount Total Level 1 Level 2 Level 3  (Dollars in thousands)  Cash and cash equivalents $ 63,551 $ 63,551 $ 63,551 $ — $ —  Loans payable (16,360) (16,360) — (16,360) —  Term loan facility - Credit Facility (1) (645,242) (646,979) — (646,979) —  Revolving credit facility - Credit Facility (78,000) (79,295) — (79,295) —  Other long-term notes payable (7,112) (3,973) — (3,973) —  Interest rate swaps 1,616 1,616 — 1,616 —  Interest rate swaps (124) (124) — (124) —  Foreign currency forward contracts, net (469) (469) — (469) —  (1) The carrying values of the term loan facilities are net of unamortized debt issuance costs of $4. 8 million and $7.5 million for the period ended December 31, 2018, and December 31, 2017, 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 in Accumulated other comprehensive loss (“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. This interest rate swap agreement 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 is $317. 6 million at December 31, 2018. 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, 2018, the Company expects it will reclassify net losses of approximately $0. 8 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 US 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 is $2 28.3 million at December 31, 2018, 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, 2018, the Company expects it will reclassify net gains of approximately $5. 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 (loss) gain recognized in AOCL and the amount of (loss) gain reclassified into earnings for the year ended December 31, 2018 and 2017, follow:    Amount of (Loss) Gain  Amount of (Loss) Gain Reclassified from Location of (Loss) Gain  Recognized in AOCL AOCL into Income Reclassified from  2018 2017 2018 2017 AOCL into Income  (Dollars in thousands)  Interest rate swaps $ (4,513) $ 1,492 $ (966) $ (527) Interest expense  Cross currency swaps 15,901 — 3,616 — Interest expense  $ 2,650 $ (527) Total Interest expense  Cross currency swaps 14,509 — Foreign currency losses, net  $ 14,509 $ — Total Foreign currency losses, net The total amounts of expense line items presented in the consolidated statement of operations in which the effects of cash flow hedges follow:    2018 2017  (Dollars in thousands)  Interest expense $ 33,371 $ 27,754  Foreign currency losses, net 8,187 6,554 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 other comprehensive income or loss. 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. The fair value of the net investment hedge is €31.0 million at December 31, 2017. 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 US dollars. The notional amount is €97.2 million at December 31, 2018, with a maturity date of February 14, 2024. These swaps are hedging risk associated with the net investment in EUR 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, 2018 and 2017, follow:    Amount of Gain Amount of Gain Recognized in  Amount of Gain (Loss) Reclassified from Income on Derivative (Amount  Recognized in AOCL AOCL into Income Excluded from Effectiveness Testing) Location of Gain  2018 2017 2018 2017 2018 2017 (Loss) in Earnings  (Dollars in thousands)  Cross currency swaps $ 7,243 $ — $ — $ — $ 2,261 $ — Interest expense  Net investment hedge — (10,972) — — — — Foreign currency losses, net  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 approximately zero in 2018, net losses of $2.9 million in 2017 and net losses of $2.7 million in 2016, 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 $387.2 million at December 31, 2018, and $ 238.5 million at December 31, 2017. The following table presents the effect on our consolidated statements of operations for the years ended December 31, 2018, 2017 and 2016, respectively, of foreign currency forward contracts:    Amount of (Loss)  Recognized in Earnings   2018 2017 2016 Location of (Loss) in Earnings   (Dollars in thousands)  Foreign currency forward contracts $ (12) $ (2,938) $ (2,714) 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. All derivatives are reported on a gross basis.     2018 2017 Balance Sheet Location  (Dollars in thousands)  Asset derivatives:  Interest rate swaps $ — $ 1,616 Other non-current assets  Cross currency swaps 9,606 — Other current assets  Cross currency swaps 7,498 — Other non-current assets  Foreign currency forward contracts 626 661 Other current assets  Liability derivatives:  Interest rate swaps (755) (124) Accrued expenses and other current liabilities  Interest rate swaps (4,489) — Other non-current liabilities  Foreign currency forward contracts $ (896) $ (1,130) Accrued expenses and other current liabilities

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2018
Income Taxes [Abstract]
Income Taxes	11. Income Taxes  Income tax expense is based on our earnings from continuing operations before income taxes as presented in the following table:        2018 2017 2016  (Dollars in thousands)  U.S. $ 2,233 $ 9,857 $ 7,416  Foreign 101,759 100,661 55,029  Total $ 103,992 $ 110,518 $ 62,445  Our income tax expense (benefit) from continuing operations consists of the following components:     2018 2017 2016  (Dollars in thousands)  Current:  U.S. federal $ 483 $ (82) $ 4,616  Foreign 26,156 29,289 24,675  State and local 127 53 28  Total current 26,766 29,260 29,319  Deferred:  U.S. federal 2,405 24,534 379  Foreign (5,603) (1,064) (11,830)  State and local (522) 20 —  Total deferred (3,720) 23,490 (11,451)  Total income tax expense (benefit) $ 23,046 $ 52,750 $ 17,868  In addition, income tax expense (benefit) that we allocated directly to Ferro Corporation shareholders’ equity is detailed in the following table:      2018 2017 2016  (Dollars in thousands)  Interest rate swaps $ (1,529) $ 547 $ —  Postretirement benefit liability adjustments (16) 18 30  Net investment hedge 954 (4,025) —  Stock options exercised — — (2,355)  Total income tax (benefit) expense allocated to Ferro Corporation shareholders' equity $ (591) $ (3,460) $ (2,325)  A reconciliation of the U.S. federal statutory income tax rate and our effective tax rate follows:      2018 2017 2016  U.S. federal statutory income tax rate 21.0 % 35.0 % 35.0 %  Foreign tax rate difference 7.6 (7.3) (8.8)  Uncertain tax positions, net of tax audit settlements 4.7 5.1 2.2  Non-deductible expenses 2.9 2.4 3.4  Global intangible low-taxed income, net 2.5 — —  Foreign currency 0.6 (0.6) (1.6)  State taxes 0.1 (0.1) (0.7)  Domestic production activities deduction — (0.6) (0.2)  Goodwill dispositions, impairments and amortization (0.3) (1.8) 8.3  Notional interest deduction (0.3) (0.5) (2.8)  Foreign derived intangible income deduction (1.1) — —  Other (3.5) (1.5) 4.8  Tax rate changes (2.1) 19.0 (0.7)  Adjustment of valuation allowances (4.5) (0.3) (7.4)  Other tax credits (5.4) (1.1) (2.9)  Effective tax rate 22.2 % 47.7 % 28.6 %  On December 22, 2017, U.S. federal tax legislation, commonly referred to as the Tax Cut and Jobs Act (the “Tax Act”), was signed into law, significantly changing the U.S. corporate income tax system. These changes include a federal statutory rate reduction from 35% to 21% effective January 1, 2018. Changes in tax rates and tax law are accounted for in the period of enactment. Accordingly, the Company’s U.S. net deferred tax assets were re-measured to reflect the reduction in the federal statutory rate, resulting in a $21.5 million increase in income tax expense for the year ended December 31, 2017. The Tax Act also changed the U.S. taxation of worldwide income. The Tax Act contains many provisions which continue to be clarified through new regulations. Consistent with the guidance of SEC Staff Accounting Bulletin No. 118, Income Tax Accounting Implications of the Tax Cuts and Jobs Act (“SAB 11 8”), we completed our analysis w ithin 2018 and our initial determination of no tax due on the one-time mandatory deemed repatriation tax on accumulated foreign subsidiaries’ previously untaxed foreign earnings and profits was unchanged from our position at December 31, 2017. The Tax Act also subjects a U.S. shareholder to tax on its global intangible low-taxed income. In accordance with FASB Staff Q&A Topic 740, No. 5 "Accounting for Global Intangible Low-Taxed Income," we have elected to account for the tax on global intangible low-taxed income as a current period expense . We have refundable income taxes of $13.5 million at December 31, 2018, and $6.9 million at December 31, 2017, classified as Other receivables on our consolidated balance sheets. We also have income taxes payable of $6.0 million at December 31, 2018, and $8.3 million at December 31, 2017, classified as Accrued expenses and other current liabilities on our consolidated balance sheets. The components of deferred tax assets and liabilities at December 31 were:     2018 2017  (Dollars in thousands)  Deferred tax assets:  Foreign operating loss carryforwards $ 42,551 $ 44,804  Pension and other benefit programs 39,174 36,720  Foreign tax credit carryforwards 17,356 20,054  Accrued liabilities 12,515 14,625  Other credit carryforwards 11,446 10,889  Other 8,605 5,823  State and local operating loss carryforwards 2,272 4,808  Inventories 2,732 2,679  Currency differences 2,566 7,376  Allowance for doubtful accounts 1,576 1,822  Total deferred tax assets 140,793 149,600  Deferred tax liabilities:  Property, plant and equipment and intangibles -- depreciation and amortization 29,648 38,785  Other 2,763 2,339  Unremitted earnings of foreign subsidiaries 1,575 1,163  Total deferred tax liabilities 33,986 42,287  Net deferred tax assets before valuation allowance 106,807 107,313  Valuation allowance (25,596) (32,579)  Net deferred tax assets $ 81,211 $ 74,734  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, 2018, we had $38.8 million of state operating loss carryforwards and $183.2 million of foreign operating loss carryforwards, some of which can be carried forward indefinitely and others expire in one to twenty years. At December 31, 2018, we had $33.0 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)  2019 $ 21,072 $ 6,003  2020-2024 33,969 8,140  2025-2029 16,411 9,025  2030-2034 13,112 4,906  2035-2039 5,093 3,953  2040-Indefinitely 132,341 1,004  Total $ 221,998 $ 33,031 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, 2018 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, 2018 , the Company has recorded a valuation allowance of $25.6 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 2017 to 2018 primarily related to the removal of a valuation allowance in jurisdictions where it was deemed the valuation allowance was no longer necessary and the utilization of assets with an off-setting valuation allowance. We classified net deferred income tax assets as of December 31 as detailed in the following table:     2018 2017  (Dollars in thousands)  Non-current assets $ 103,488 $ 108,025  Non-current liabilities (22,277) (33,291)  Net deferred tax assets $ 81,211 $ 74,734  Activity and balances of unrecognized tax benefits are summarized below:      2018 2017 2016  (Dollars in thousands)  Balance at beginning of year $ 28,470 $ 30,085 $ 34,541  Additions based on tax positions related to the current year 4,041 1,609 1,445  Additions for tax positions of prior years 24 2,057 170  Reductions for tax positions of prior years (1,710) (288) (2,827)  Reductions as a results of expiring statutes of limitations (420) (6,284) (2,718)  Foreign currency adjustments (786) 1,644 (526)  Settlements with taxing authorities (4,750) (353) —  Balance at end of year $ 24,869 $ 28,470 $ 30,085 The total amount of unrecognized tax benefits that, if recognized, would affect the effective rate was $9.2 million at December 31, 2018, $9.8 million at December 31, 2017, and $11.0 million at December 31, 2016. The Company recognizes accrued interest and penalties related to unrecognized tax benefits as part of income tax expense. The Company recognized $0.4 million of expense in 2018, $0.7 million of expense in 2017, and $0.1 million of expense in 2016 for interest, net of tax, and related penalties. The Company accrued $1.8 million at December 31, 2018, $3.8 million at December 31, 2017, and $3.1 million at December 31, 2016 for payment of interest, net of tax, and penalties. We anticipate that $1.6 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, 2018, 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 $175.7 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, 2018
Contingent Liabilities [Abstract]
Contingent Liabilities	12. Contingent Liabilities The Company had bank guarantees and standby letters of credit issued by financial institutions that totaled $6.7 million at December 31, 2018, and $7.7 million at December 31, 2017. 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 $8.5 million at December 31, 2018, and $6.7 million at December 31, 2017, for costs associated with the remediation of certain of our current or former properties that have been contaminated. The balance at December 31, 2018, and December 31, 2017, was 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. In December 2018, additional complaints were filed in the same court by 10 other New York municipal water authorities against the C ompany 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, 2018 and 2017, is $1.3 million and $3.3 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, 2018
Retirement Benefits [Abstract]
Retirement Benefits	13. Retirement Benefits Defined Benefit Pension Plans     U.S. Pension Plans Non-U.S. Plans  2018 2017 2016 2018 2017 2016  (Dollars in thousands)  Service cost $ 11 $ 11 $ 16 $ 1,714 $ 1,717 $ 1,372  Interest cost 11,308 14,594 15,552 2,551 2,468 3,319  Expected return on plan assets (15,982) (20,111) (19,735) (862) (896) (1,712)  Amortization of prior service cost — 7 11 39 42 37  Mark-to-market actuarial net losses (gains) 16,633 (5,432) 9,127 3,840 (1,459) 11,180  Curtailment and settlement effects losses — 2,581 — 372 39 688  Special termination benefits — — — 232 52 330  Net periodic benefit cost (credit) $ 11,970 $ (8,350) $ 4,971 $ 7,886 $ 1,963 $ 15,214  Weighted-average assumptions:  Discount rate 3.80 % 4.40 % 4.70 % 2.35 % 2.24 % 3.12 %  Rate of compensation increase N/A N/A N/A 3.18 % 3.14 % 3.16 %  Expected return on plan assets 7.70 % 8.20 % 8.20 % 2.55 % 2.54 % 3.41 %   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 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 $3.8 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 $1.5 million for non-U.S. plans was primarily driven by remeasurement of the respective liabilities at a higher discount rate. In 2016, the mark-to-market actuarial net loss on the U.S. pension plans of $9.1 million consisted of a charge of $5.7 million to remeasure the liability based on a lower discount rate compared with the prior year, and $3.4 million of loss from expected returns on plan assets exceeding actual returns. The mark-to-market actuarial net loss of $11.2 million for non-U.S. plans was primarily driven by remeasurement of the respective liabilities at lower discount rates.      U.S. Pension Plans Non-U.S. Pension Plans  2018 2017 2018 2017  (Dollars in thousands)  Change in benefit obligation  Benefit obligation at beginning of year $ 303,170 $ 345,202 $ 117,146 $ 103,490  Service cost 11 11 1,714 1,717  Interest cost 11,308 14,594 2,551 2,468  Settlements (25) (51,124) (1,330) (387)  Special termination benefits — — 232 52  Plan participants' contributions — — 21 25  Benefits paid (20,165) (23,469) (2,825) (2,826)  Net transfer in — — 518 416  Actuarial (gain) loss (14,414) 17,956 2,241 (1,381)  Exchange rate effect — — (4,994) 13,572  Benefit obligation at end of year $ 279,885 $ 303,170 $ 115,274 $ 117,146  Accumulated benefit obligation at end of year $ 279,885 $ 303,170 $ 105,137 $ 112,732  Change in plan assets:  Fair value of plan assets at beginning of year $ 239,260 $ 272,549 $ 38,270 $ 33,683  Actual return on plan assets (15,065) 40,919 (1,109) 933  Employer contributions 420 385 3,185 2,515  Plan participants' contributions — — 21 25  Benefits paid (20,165) (23,469) (2,825) (2,826)  Effect of settlements (25) (51,124) (1,330) (387)  Exchange rate effect — — (1,682) 4,327  Fair value of plan assets at end of year $ 204,425 $ 239,260 $ 34,530 $ 38,270  Amounts recognized in the balance sheet:  Accrued expenses and other current liabilities $ (404) $ (422) $ (4,174) $ (2,354)  Postretirement and pension liabilities (75,056) (63,488) (76,570) (76,522)  Funded status $ (75,460) $ (63,910) $ (80,744) $ (78,876)   During 2017, the Company settled a portion of its pension obligation in the U.S. for $51.1 million.      U.S. Pension Plans Non-U.S. Pension Plans  2018 2017 2018 2017  (Dollars in thousands)  Weighted-average assumptions as of December 31:  Discount rate 4.40 % 3.80 % 2.61 % 2.35 %  Rate of compensation increase N/A N/A 3.19 % 3.18 %  Pension plans with benefit obligations in excess of plan assets:  Benefit obligations $ 279,885 $ 303,170 $ 87,955 $ 87,990  Plan assets 204,425 239,260 7,212 9,114  Pension plans with accumulated benefit obligations in excess of plan assets:  Projected benefit obligations $ 279,885 $ 303,170 $ 85,262 $ 84,206  Accumulated benefit obligations 279,885 303,170 75,343 73,902  Plan assets 204,425 239,260 4,637 5,464  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  2018 2017 2018 2017  (Dollars in thousands)  Prior service (cost):  Balance at beginning of year $ — $ (7) $ (261) $ (265)  Amounts recognized as net periodic benefit costs — 7 39 42  Exchange rate effects — — 16 (38)  Balance at end of year $ — $ — $ (206) $ (261)  Estimated amounts to be amortized in 2019 $ — $ (39) 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, 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 1,077 — — 1,077  Other 2,607 2,126 — 4,733  Equities:  Mutual funds 455 — — 455  Other assets 82 — — 82  Total $ 4,253 $ 2,959 $ 27,318 $ 34,530  The fair values of our pension plan assets at December 31, 2017, by asset category are as follows:      Level 1 Level 2 Level 3 Total  (Dollars in thousands)  U.S. plans:  Fixed income:  Cash and cash equivalents $ 3 $ — $ — $ 3  Guaranteed deposits — 1,802 — 1,802  Mutual funds 74,875 — — 74,875  Commingled funds — 667 269 936  Equities:  U.S. common stocks 6,678 — — 6,678  Mutual funds 129,887 — — 129,887  Commingled funds — 999 — 999  Total assets in the fair value hierarchy $ 211,443 $ 3,468 $ 269 $ 215,180  Investments measured at net asset value — — — 24,080  Investments at fair value $ 211,443 $ 3,468 $ 269 $ 239,260  Non-U.S. plans  Fixed income:  Guaranteed deposits $ 42 $ 751 $ 30,127 $ 30,920  Mutual funds 1,122 — — 1,122  Other 3,293 2,332 — 5,625  Equities:  Mutual funds 517 — — 517  Other assets 86 — — 86  Total $ 5,060 $ 3,083 $ 30,127 $ 38,270 The Company’s U.S. pension plans held 0.3 million shares of the Company’s common stock with a market value of $4.4 million at December 31, 2018, and 0.3 million shares with a market value of $6.7 million at December 31, 2017. 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 losses included in earnings were $1.0 million in 2018 and unrealized gains included in earnings were $2.3 million in 2017. Transfers out of Level 3 during 2017 represent a correction to remove certain U.S. real estate assets measured at net investment value per share using a practical expedient from the fair value hierarchy.     Guaranteed Commingled  deposits Real estate funds Total  (Dollars in thousands)  Balance at December 31, 2016 $ 26,332 $ 22,257 $ 371 $ 48,960  Sales (465) — — (465)  Gains (losses) included in earnings 531 1,823 (102) 2,252  Transfers — (24,080) — (24,080)  Exchange rate effect 3,729 — — 3,729  Balance at December 31, 2017 $ 30,127 $ — $ 269 $ 30,396  Sales (487) — — (487)  (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  We expect to contribute approximately $2.8 million to our U.S. pension plans and $4.5 million to our non-U.S. pension plans in 2019. We estimate that future pension benefit payments, will be as follows:      U.S. Plans Non-U.S. Plans  (Dollars in thousands)  2019 $ 19,290 $ 7,825  2020 19,376 4,268  2021 19,577 4,404  2022 19,779 5,710  2023 19,708 4,360  2024-2028 96,668 25,969  Postretirement Health Care and Life Insurance Benefit Plans       2018 2017 2016  (Dollars in thousands)  Net periodic benefit cost:  Interest expense $ 732 $ 843 $ 944  Mark-to-market actuarial net (gain) loss (2,580) 458 (164)  Total net periodic benefit (credit) cost $ (1,848) $ 1,301 $ 780  Weighted-average assumptions:  Discount rate 3.70 % 4.20 % 4.50 %  Current trend rate for health care costs 6.40 % 6.50 % 6.60 %  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 $ 44 $ (38)  Effect on postretirement benefit obligation 894 (789)       2018 2017  (Dollars in thousands)  Change in benefit obligation:  Benefit obligation at beginning of year $ 20,725 $ 21,056  Interest cost 732 843  Benefits paid (1,679) (1,632)  Actuarial (gain) loss (2,580) 458  Benefit obligation at end of year $ 17,198 $ 20,725  Change in plan assets:  Fair value of plan assets at beginning of year $ — $ —  Employer contributions 1,679 1,632  Benefits paid (1,679) (1,632)  Fair value of plan assets at end of year $ — $ —  Amounts recognized in the balance sheet:  Accrued expenses and other current liabilities $ (1,966) $ (2,132)  Postretirement and pension liabilities (15,232) (18,593)  Funded status $ (17,198) $ (20,725)  Weighted-average assumptions as of December 31:  Discount rate 4.30 % 3.70 %  Current trend rate for health care costs 6.30 % 6.40 %  Ultimate trend rate for health care costs 4.50 % 4.50 %  Year that ultimate rend 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)  2019 $ 1,968 $ 1,758  2020 1,881 1,681  2021 1,796 1,608  2022 1,704 1,528  2023 1,615 1,450  2024-2028 6,689 6,038  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 years 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 $2.9 million, $5.7 million, and $4.2 million in 2018, 2017, and 2016, respectively.

Stock-Based Compensation

Stock-Based Compensation	12 Months Ended
	Dec. 31, 2018
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, subject to shareholder approval. 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, 2018. 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, 2018 , have a term of 10 years, vest evenly over three years 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:      2018 2017 2016  Weighted-average grant-date fair value $ 8.91 $ 7.29 $ 4.94  Expected life, in years 5.4 6.0 6.0  Risk-free interest rate 2.7 % 1.9% - 2.3 % 1.4% - 1.6 %  Expected volatility 39.7 % 48.0 % - 51.5 % 52.0% - 53.6 %  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, 2017 1,567,269 10.08  Granted 150,300 22.01  Exercised (102,880) 7.43  Forfeited or expired (1,000) 17.26  Outstanding at December 31, 2018 1,613,689 $ 11.36 5.50 $ 7,929  Exercisable at December 31, 2018 1,230,261 $ 9.87 4.64 $ 7,157  Vested or expected to vest at December 31, 2018 1,613,689 $ 11.36 5.50 $ 7,929  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:     2018 2017 2016  (Dollars in thousands)  Proceeds from the exercise of stock options $ 764 $ 4,526 $ 1,140  Intrinsic value of stock options exercised 1,612 2,898 1,496  Income tax benefit related to stock options exercised 338 1,014 524  Stock Options Expense Information A summary of amounts recorded and to be recorded for stock-based compensation related to stock options follows:     2018 2017 2016  (Dollars in thousands)  Compensation expense recorded in Selling, general and administrative expenses $ 1,560 $ 1,588 $ 1,388  Deferred income tax benefits related to compensation expense 328 333 486  Total fair value of stock options vested 1,418 1,388 1,757  Unrecognized compensation cost 644 621 513  Expected weighted-average recognition period for unrecognized compensation, in years 2.7 2.0 2.1  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 years. 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 2018, 2017 and 2016 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, 2018, we had 0.1 million and 0.2 million performance share units outstanding associated with our 2018 and 2017 grants, respectively. The weighted average grant date fair value of our performance share units was $22.92 for shares granted in 2018, $14.89 for shares granted in 2017 and $10.07 for shares granted in 2016. 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, 2017 621,490  Granted 244,062  Earned (321,382)  Forfeited or expired (5,970)  Outstanding at December 31, 2018 538,200 0.7  Vested or expected to vest at December 31, 2018 538,200 0.7  Performance Share Unit Expense Information A summary of amounts recorded and to be recorded for stock-based compensation related to performance share units follows:     2018 2017 2016  (Dollars in thousands)  Compensation expense recorded in Selling, general and administrative expenses $ 4,156 $ 6,881 $ 3,437  Deferred income tax benefits related to compensation expense 873 1,445 1,203  Unrecognized compensation cost 3,670 3,801 3,733  Expected weighted-average recognition period for unrecognized compensation, in years 1.4 1.4 2.0  Restricted Stock Units We granted 0.1 million, 0.2 million and 0.3 million restricted stock units in 2018, 2017, and 2016, 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 2018, 2017 and 2016 was $2.1 million, $2.5 million and $1.7 million, respectively. Total unrecognized compensation cost in 2018, 2017 and 2016 was $3.0 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 $1.2 million, at December 31, 2018, and 0.1 million shares, valued at $1.6 million, at December 31, 2017.

Restructuring And Cost Reductio

Restructuring And Cost Reduction Programs	12 Months Ended
	Dec. 31, 2018
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 leveraging our global scale, realigning and lowering our cost structure and optimizing capacity utilization. Total restructuring charges resulting from these activities were $13. 3 million in 2018, $9. 8 million in 2017, and $2. 7 million in 2016, which are reported in Restructuring and impairment charges in our consolidated statement of operations. Descriptions of the restructuring program follow: Global Cost Reduction Program In 2013, we initiated a Global Cost Reduction Program that was designed to address 3 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 2018, the restructuring charges primarily relate to costs associated with integration of our recent acquisitions and optimization programs. We have summarized the charges associated with this restructuring program by major type of charges below:     Employee Asset  Severance Other Costs Impairment Total  (Dollars in thousands)  Expected restructuring charges:  Global Cost Reduction Program $ 53,861 36,935 1,176 $ 91,972  Total expected restructuring charges $ 53,861 $ 36,935 $ 1,176 $ 91,972   Restructuring charges incurred:  Global Cost Reduction Program $ 1,353 1,356 — $ 2,709  Charges incurred in 2016 $ 1,353 $ 1,356 $ — $ 2,709  Global Cost Reduction Program 5,167 3,500 1,176 9,843  Charges incurred in 2017 $ 5,167 $ 3,500 $ 1,176 $ 9,843  Global Cost Reduction Program 5,794 7,501 — 13,295  Charges incurred in 2018 $ 5,794 $ 7,501 $ — $ 13,295  Cumulative restructuring charges incurred:  Global Cost Reduction Program 40,818 33,480 1,176 75,474  Cumulative restructuring charges incurred as of December 31, 2018 $ 40,818 $ 33,480 $ 1,176 $ 75,474  We have summarized the charges associated with the restructuring programs by segments below:     Total Cumulative  Expected Charges To  Charges 2018 2017 2016 Date  (Dollars in thousands)  Performance Coatings $ 15,343 $ 274 $ 2,948 $ 192 $ 7,326  Performance Colors and Glass 25,546 23 971 205 20,055  Color Solutions 7,327 148 1,250 630 4,337  Segment Total 48,216 445 5,169 1,027 31,718  Corporate Restructuring Charges 43,756 12,850 4,674 1,682 43,756  Total Restructuring Charges $ 91,972 $ 13,295 $ 9,843 $ 2,709 $ 75,474  We have summarized the activities and accruals related to our restructuring and cost reduction programs below:      Employee Asset  Severance Other Costs Impairment Total  (Dollars in thousands)  Balance at December 31, 2015 $ 693 $ 2,077 $ — $ 2,770  Restructuring charges 1,353 $ 1,356 $ — 2,709  Cash payments (1,634) (1,089) — (2,723)  Non-cash items (173) (855) — (1,028)  Balance at December 31, 2016 $ 239 $ 1,489 $ — $ 1,728  Restructuring charges $ 5,167 $ 3,500 $ 1,176 $ 9,843  Cash payments (3,316) (500) — (3,816)  Non-cash items 196 (3,255) (1,176) (4,235)  Balance at December 31, 2017 $ 2,286 $ 1,234 $ — $ 3,520  Restructuring charges $ 5,794 7,501 — $ 13,295  Cash payments (6,749) (2,462) — (9,211)  Non-cash items (180) (4,985) — (5,165)  Balance at December 31, 2018 $ 1,151 $ 1,288 $ — $ 2,439   We expect to make cash payments to settle the remaining liability for employee severance benefits and other costs over the next twelve months, except where legal or contractual obligations would require it to extend beyond that period.

Leases

Leases	12 Months Ended
	Dec. 31, 2018
Leases [Abstract]
Leases	16. Leases Rent expense for all operating leases was $15.0 million in 2018, $12.2 million in 2017, and $9.8 million in 2016. The Company has a number of capital lease arrangements primarily relating to buildings and equipment. Assets held under capital leases are included in property, plant and equipment, and at December 31 are as follows:      2018 2017  (Dollars in thousands)  Gross amounts capitalized  Buildings $ 4,705 $ 4,781  Equipment 3,516 3,710  8,221 8,491  Accumulated amortization  Buildings (3,238) (3,190)  Equipment (2,798) (2,420)  (6,036) (5,610)  Net assets under capital leases $ 2,185 $ 2,881  At December 31, 2018, future minimum lease payments under all non-cancelable leases are as follows:      Capital Leases Operating Leases  (Dollars in thousands)  2019 $ 1,048 $ 11,419  2020 755 7,314  2021 477 5,302  2022 1,287 3,301  2023 279 1,971  Thereafter 992 2,401  Net minimum lease payments $ 4,838 $ 31,708  Less amount representing imputed interest and executory costs 875  Present value of net minimum lease payments 3,963  Less current portion 679  Long-term obligations at December 31, 2018 $ 3,284

Miscellaneous Expense (Income),

Miscellaneous Expense (Income), Net	12 Months Ended
	Dec. 31, 2018
Miscellaneous Expense (Income), Net [Abstract]
Miscellaneous Expense (Income), Net	17. Miscellaneous Expense (Income), Net Components of Miscellaneous expense (income), net follow:     2018 2017 2016  (Dollars in thousands)  Pension expense (income) $ 16,281 $ (6,814) $ 19,577  Argentina export tax matter 507 (3,549) 1,128  Gain on change of control (2,586) (2,561) —  Modification of debt 1,046 — —  Dividends/royalty from affiliates, net (720) (993) (1,245)  Equity method investment (income) loss (55) 261 (260)  (Gain) loss on sale of assets (440) 722 (3,891)  Contingent consideration (adjustment) payment (1,971) 1,721 —  Bank fees 2,648 2,229 1,855  Other, net 1,260 548 (247)  Total Miscellaneous expense (income), net $ 15,970 $ (8,436) $ 16,917 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 $16.3 million in 2018, income of $6.8 million in 2017 and expense of $19.6 million in 2016 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. 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 $0.5 million charge in 2018, $0.9 million charge in 2017 and $1.1 million charge in 2016 related to interest on the liabilities. In 2016, we recorded a $3.9 million gain on sale from the proceeds of a closed site in Australia which was recorded for the year ended December 31, 2016.

Earnings Per Share

Earnings Per Share	12 Months Ended
	Dec. 31, 2018
Earnings Per Share [Abstract]
Earnings Per Share	18. Earnings per Share Details of the calculations of basic and diluted earnings per share follow:      2018 2017 2016  (Dollars in thousands, except per share amounts)  Basic earnings (loss) per share computation:  Net income (loss) attributable to Ferro Corporation common shareholders $ 80,093 $ 57,054 $ (20,817)  Adjustment for loss from discontinued operations — — 64,464  Total $ 80,093 $ 57,054 $ 43,647  Weighted-average common shares outstanding 83,940 83,713 83,298  Basic earnings per share from continuing operations attributable to Ferro Corporation common shareholders $ 0.95 $ 0.68 $ 0.52  Diluted earnings (loss) per share computation:  Net income (loss) attributable to Ferro Corporation common shareholders $ 80,093 $ 57,054 $ (20,817)  Adjustment for loss from discontinued operations — — 64,464  Total $ 80,093 $ 57,054 $ 43,647  Weighted-average common shares outstanding 83,940 83,713 83,298  Assumed exercise of stock options 772 762 549  Assumed satisfaction of deferred stock unit conditions — — 36  Assumed satisfaction of restricted stock unit conditions 301 351 544  Assumed satisfaction of performance stock unit conditions 72 330 483  Weighted-average diluted shares outstanding 85,085 85,156 84,910  Diluted earnings per share from continuing operations attributable to Ferro Corporation common shareholders $ 0.94 $ 0.67 $ 0.51 The number of anti-dilutive or unearned shares was 1. 7 million, 1. 6 million, and 1. 7 million for 2018, 2017, and 2016, 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, 2018
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 1,470, 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. The Company repurchased 1,175, 437 shares of common stock at an average price of $9. 72 per share for a total cost of $11.4 million during 2016. As of December 31, 2018, $71. 2 million of common stock could still be repurchased under the programs. 

Accumulated Other Comprehensive

Accumulated Other Comprehensive (Loss)	12 Months Ended
	Dec. 31, 2018
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 Net Gain  Benefit Liability Translation on Cash  Adjustments Adjustments Flow Hedges Total  (Dollars in thousands)  Balance at December 31, 2015 $ 811 $ (62,129) $ — $ (61,318)  Other comprehensive (loss) before reclassifications, before tax — (46,770) — (46,770)  Reclassification to earnings:  Postretirement benefit liabilities gain, before tax 360 — — 360  Foreign currency translation adjustment, before tax (1) — 1,115 — 1,115  Current period other comprehensive income (loss), before tax 360 (45,655) — (45,295)  Tax effect 30 — — 30  Current period other comprehensive income (loss), net of tax 330 (45,655) — (45,325)  Balance at December 31, 2016 1,141 (107,784) — (106,643)  Other comprehensive income 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, before tax 42 — — 42  Current period other comprehensive income, before tax 42 26,181 1,492 27,715  Tax effect 18 (4,025) 547 (3,460)  Current period other comprehensive income, net of tax 24 30,206 945 31,175  Balance at December 31, 2017 1,165 (77,578) 945 (75,468)  Other comprehensive (loss) income 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 (loss), before tax (55) — — (55)  Current period other comprehensive (loss), before tax (55) (24,658) (5,771) (30,484)  Tax effect (16) 954 (1,529) (591)  Current period other comprehensive (loss), net of tax (39) (25,612) (4,242) (29,893)  Balance at December 31, 2018 $ 1,126 $ (103,190) $ (3,297) $ (105,361) (1) Includes a release of accumulated foreign currency translation of $1.1 million related to the Company’s sale of the Europe-based Polymer Additives business (Note 4), which is included in Loss from discontinued operations, net of income taxes in our consolidated statements of operations for the year ended December 31, 2016.

Reporting For Segments

Reporting For Segments	12 Months Ended
	Dec. 31, 2018
Reporting For Segments [Abstract]
Reporting For Segments	21. Reporting for Segments The Company’s reportable segments are Performance Coatings, 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.      2018 2017 2016  (Dollars in thousands)  Performance Coatings $ 733,926 $ 594,029 $ 526,981  Performance Colors and Glass 487,455 444,653 371,464  Color Solutions 391,027 358,060 246,847  Total net sales $ 1,612,408 $ 1,396,742 $ 1,145,292  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:      2018 2017 2016  (Dollars in thousands)  Performance Coatings $ 165,708 $ 145,797 $ 139,454  Performance Colors and Glass 167,446 157,544 133,997  Color Solutions 124,852 113,694 84,466  Other cost of sales (2,073) (814) (1,539)  Total gross profit 455,933 416,221 356,378  Selling, general and administrative expenses 278,566 265,418 227,286  Restructuring and impairment charges 13,295 11,409 15,907  Other expense, net 60,080 28,876 50,740  Income before income taxes $ 103,992 $ 110,518 $ 62,445  Each segment’s capital expenditures for long-lived assets are detailed below:      2018 2017 2016  (Dollars in thousands)  Performance Coatings $ 41,106 $ 19,734 $ 9,139  Performance Colors and Glass 8,858 9,374 7,123  Color Solutions 24,940 20,356 4,867  Total segment expenditures for long-lived assets 74,904 49,464 21,129  Unallocated corporate expenditures for long-lived assets 5,715 1,088 2,896  Total expenditures for long lived assets (1) $ 80,619 $ 50,552 $ 24,025 _____________________ (1) Excludes capital expenditures of discontinued operations of $0.9 million in 2016.  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 Spain rep resent greater than 10% of our net sales. Net sales by geography are as follows:      2018 2017 2016  (Dollars in thousands)  United States $ 379,914 $ 356,482 $ 300,187  Spain 305,049 214,732 188,972  Other international 927,445 825,528 656,133  Total net sales $ 1,612,408 $ 1,396,742 $ 1,145,292  No ne of our operations in countries other than Spain, U.S . and Mexico 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 are as follows:      2018 2017  (Dollars in thousands)  Spain $ 78,094 $ 76,142  United States 56,263 44,956  Mexico 39,019 16,989  Other international 207,965 183,655  Total long-lived assets $ 381,341 $ 321,742

Unconsolidated Affiliates Accou

Unconsolidated Affiliates Accounted For Under the Equity Method	12 Months Ended
	Dec. 31, 2018
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 income of $0. 1 million in 2018, loss of $0.3 million in 2017, and income of $0. 3 million in 2016. The balance of our equity method investments, which is reported in Other non-current assets, was $8.2 million at December 31, 2018, and $7.6 million at December 31, 2017. 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:      2018 2017 2016  (Dollars in thousands)  Net sales $ 18,950 $ 33,851 $ 42,555  Gross profit 3,343 5,655 4,842  Income (loss) from continuing operations 746 (224) 694  Net income (loss) 596 (220) 236      2018 2017  (Dollars in thousands)  Current assets $ 17,305 $ 19,908  Non-current assets 3,356 10,834  Current liabilities (3,832) (13,207)  Non-current liabilities (339) (467)  We had the following transactions with our equity-method investees:      2018 2017 2016  (Dollars in thousands)  Sales $ 4,898 $ 5,378 $ 4,589  Purchases 15 2,006 758  Dividends and interest received 415 920 268  Commission and royalties received 305 130 1,003  Commissions and royalties paid — 57 26

Quarterly Data

Quarterly Data	12 Months Ended
	Dec. 31, 2018
Quarterly Data [Abstract]
Quarterly Data	23. Quarterly Data (Unaudited )     Net Income Earnings (Loss) Attributable to  (Loss) 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)  2017  Quarter 1 $ 320,555 $ 98,794 $ 22,121 $ 21,898 $ 0.26 $ 0.26  Quarter 2 348,632 108,342 21,229 21,025 0.25 0.25  Quarter 3 350,012 103,616 22,965 22,817 0.27 0.27  Quarter 4 377,543 105,469 (8,547) (8,686) (0.10) (0.10)  Total $ 1,396,742 $ 416,221 $ 57,768 $ 57,054 $ 0.68 $ 0.67  2018  Quarter 1 $ 405,532 $ 118,686 $ 23,598 $ 23,391 $ 0.28 $ 0.27  Quarter 2 416,239 126,645 29,861 29,668 0.35 0.35  Quarter 3 395,163 105,487 16,143 16,058 0.19 0.19  Quarter 4 395,474 105,115 11,344 10,976 0.13 0.13  Total $ 1,612,408 $ 455,933 $ 80,946 $ 80,093 $ 0.95 $ 0.94 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 2018 were $4.1 million in the first quarter, $3.8 million in the second quarter, $2.6 million in the third quarter, and $2. 9 million in the fourth quarter. Restructuring and impairment charges in 2017 were $3.0 million in the first quarter, $3.2 million in the second quarter, $1.5 million in the third quarter, and $3.7 million in the fourth quarter. Mark-to-market net losses on our postretirement benefit plans was $ 17.9 million in the fourth quarter of 2018 and net gains of $6. 4 million in the fourth quarter of 2017.

Schedule II - Valuation And Qua

Schedule II - Valuation And Qualifying Accounts And Reserves	12 Months Ended
	Dec. 31, 2018
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 Years Ended December 31, 2018, 2017 and 2016     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, 2018 $ 7,821 681 (2,642) (356) $ 5,504  Year ended December 31, 2017 $ 8,166 44 (1,253) 864 $ 7,821  Year ended December 31, 2016 $ 7,784 1,383 (820) (181) $ 8,166  Valuation Allowance on Net Deferred Tax Assets:  Year ended December 31, 2018 $ 32,579 — (5,617) 1 (1,366) $ 25,596  Year ended December 31, 2017 $ 37,354 — (5,648) 1 873 $ 32,579  Year ended December 31, 2016 $ 55,043 — (16,686) 1 (1,003) $ 37,354 (1) Included within this deduction is $1.7 million, $0.8 million and $6.8 million for the years ended December 31, 2018, 2017, and 2016 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, 2018
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 the Other non-current assets on our 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 $40.2 million for 2018, $36.4 million for 2017 and $27.3 million for 2016.
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 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 other comprehensive income or loss and reclassified from accumulated other comprehensive loss 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 other comprehensive income or loss. 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:      2018 2017 2016  (Dollars in thousands)  Allowance for doubtful accounts $ 5,504 $ 7,821 $ 8,166  Bad debt expense 681 44 1,383 
Inventories	   2018 2017 2016  (Dollars in thousands)  Allowance for doubtful accounts $ 5,504 $ 7,821 $ 8,166  Bad debt expense 681 44 1,383 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 to 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	  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	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.
Recently Adopted Accounting Pronouncements	Recently Adopted Accounting Pronouncement On April 1, 2018, we adopted Financial Accounting Standards Board (“FASB”) Accounting Standards Update (“ASU”) 2017-12, Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities. ASU 2017-12 provides guidance to better align an entity’s risk management activities and financial reporting for hedging relationships through changes to both the designation and measurement guidance for qualifying hedging relationships and the presentation of hedge results. The adoption of this ASU did not have an impact to the opening balance of Retained earnings. On April 1, 2018, we adopted FASB ASU 2018-03, Technical Corrections and Improvements to Financial Instruments - Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities. ASU 2018-03 provides targeted improvements to address certain aspects of recognition, measurement presentation, and disclosure of financial instruments. The adoption of ASU 2018-03 did not have a material impact on the Company’s consolidated financial statements. On January 1, 2018, we adopted FASB ASU 2017-09, Compensation – Stock Compensation: (Topic 718): Scope of Modification Accounting. ASU 2017-09 provides guidance about which changes to the terms or conditions of a share-based payment award require an entity to apply modification accounting in Topic 718. This new guidance would only impact our consolidated financial statements if, in the future, we modified the terms of any of our share-based awards. The adoption of ASU 2017-09 did not have a material impact on the Company’s consolidated financial statements. On January 1, 2018, we adopted FASB ASU 2017-07, Compensation – Retirement Benefits: (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Costs. ASU 2017-07 requires that an employer report the service cost component in the same line item as other compensation costs arising from services rendered during the period. The other components of net benefit costs are to be presented in the income statement separately from the service cost component and outside a subtotal of income from operations. This ASU also allows only the service cost component of net benefit costs to be eligible for capitalization. We adopted this ASU using the retrospective approach. This resulted in the reclassification of income of $6.8 million from Selling, general and administrative expenses to Other expense, (income) in our consolidated statement of operations for the year ended December 31, 2017, and a reclassification of loss of $14.4 million from Selling, general and administrative expenses and a loss of $5.2 million from Cost of Sales to Other expense, (income) in our consolidated statement of operations for the year ended December 31, 2016. The Company used a practical expedient where the amount disclosed in our Retirement Benefits footnote for the prior year comparative period was the basis for the estimation for applying the retrospective presentation requirements. Other than this reclassification, the adoption of ASU 2017-07 did not have an impact on the Company’s consolidated financial statements. On January 1, 2018, we adopted FASB ASU 2017-01, Business Combinations: (Topic 805): Clarifying the Definition of a Business. ASU 2017-01 is intended to clarify the definition of a business with the objective of adding guidance to assist entities in evaluating whether transactions should be accounted for as acquisitions (or dispositions) of assets or businesses. The adoption of ASU 2017-01 did not have a material impact on the Company’s consolidated financial statements. On January 1, 2018, we adopted FASB ASU 2016-16, Income Taxes: (Topic 740): Intra-Entity Transfers of Assets Other Than Inventory. ASU 2016-16 is intended to improve the accounting for the income tax consequences of intra-entity transfers of assets other than inventory and requires the recognition of the income tax consequences of an intra-entity transfer of an asset, other than inventory, when the transfer occurs. We adopted this ASU using the modified retrospective method. The impact of adopting this guidance on the Company’s consolidated financial statements resulted in an increase to Retained earnings of $4.1 million and Deferred income taxes of $4.7 million and a decrease to Other receivables of $0.6 million on January 1, 2018. On January 1, 2018, we adopted FASB ASU 2016-15, Statement of Cash Flow: (Topic 230): Classification of Certain Cash Receipts and Cash Payments. ASU 2016-15 is intended to address eight specific cash flow issues with the objective of reducing the existing diversity in practice. Adoption of ASU 2016-15 did not have a material effect on our consolidated financial statements.  On January 1, 2018, we adopted FASB ASU 2014-09, Revenue from Contracts with Customers: (Topic 606) . This ASU replaces nearly all existing U.S. GAAP guidance on revenue recognition. The standard prescribes a five-step model for recognizing revenue, the application of which require significant judgment. We have completed our assessment and review of specific contracts and have adopted this ASU using the modified retrospective method with no impact to the opening Retained earnings balance.
New Accounting Standards Not Yet Adopted	New Accounting Standards Not Yet Adopted In August 2018, the FASB issued ASU 2018-14, Compensation-Retirement Benefits-Defined Benefit Plans-General (Subtopic 715-20): Disclosure Framework-Changes to the Disclosure Requirements for Defined Benefit Plans. ASU 2018-14 modifies disclosure requirements for employers that sponsor defined benefit pension or other postretirement plans. This pronouncement is effective for fiscal years beginning after December 15, 2020. The Company is in the process of assessing the impact that the adoption of this ASU will have on our consolidated financial statements. In August 2018, the FASB issued ASU 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework-Changes to the Disclosure Requirements for Fair Value Measurement. ASU 2018-13 modifies the disclosure requirements on fair value measurements. This pronouncement is effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. The Company has adopted this standard effective January 1, 2019, and will update the disclosures for the fair value measurements in accordance with the standard updates. In February 2018, the FASB issued ASU 2018-02, Income Statement – Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income. ASU 2018-02 allows a reclassification from Accumulated Other Comprehensive (Loss) Income to Retained Earnings for stranded tax effects resulting from the Tax Cuts and Jobs Act and requires certain disclosures about stranded tax effects. This pronouncement is effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. The Company has elected not to reclassify the stranded tax effects due to the Tax Cuts and Jobs Act within Accumulated Other Comprehensive Loss, as such reclassification is not deemed beneficial to users of the financial statements. In January 2017, the FASB issued ASU 2017-04, Intangibles – Goodwill and Other: (Topic 350): Simplifying the Test for Goodwill Impairment. ASU 2017-04 is intended to simplify the subsequent measurement of goodwill by eliminating Step 2 from the current goodwill impairment test. This pronouncement is effective for the annual or any interim goodwill impairment tests conducted in fiscal years beginning after December 15, 2019. The Company is in the process of assessing the impact that the adoption of this ASU will have on our consolidated financial statements.  In February 2016, the FASB issued ASU 2016-02, Leases: (Topic 842). 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. In July 2018, the FASB issued ASU 2018-11, Targeted Improvements. This ASU provides 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 . The amendments in ASU 2018-11 are effective for fiscal years beginning after December 15, 2018, and interim periods within those fiscal years.  The Company adopted this standard effective January 1, 2019, using this new transition method under ASU 2018-11. We will elect the package of practical expedients permitted under the transition guidance, which allows us to carryforward our historical lease classification, our assessment on whether a contract is or contains a lease, and our initial direct costs for any leases that exist prior to adoption of the new standard. We will also elect to combine lease and non-lease components and to keep leases with an initial term of 12 months or less off the balance sheet. The Company has substantially completed the process of assessing the impact the adoption of this ASU will have on our consolidated financial statements. We estimate the impact to be $28 million to $30 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, we do not expect the new standard to have a material impact on our remaining consolidated financial statements. No other new accounting pronouncements issued or with effective dates during fiscal 2018 had or are expected to have a material impact of the Company’s consolidated financial statement.

Significant Accounting Polici_3

Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2018
Significant Accounting Policies [Abstract]
Detailed Information about Allowance for Doubtful Accounts	   2018 2017 2016  (Dollars in thousands)  Allowance for doubtful accounts $ 5,504 $ 7,821 $ 8,166  Bad debt expense 681 44 1,383 
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, 2018
Revenue [Abstract]
Revenues Disaggregated By Geography And Reportable Segment	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 Coatings $ 475,435 $ 49,050 $ 108,623 $ 100,818 $ 733,926  Performance Colors and Glass 235,238 157,963 71,124 23,130 487,455  Color Solutions 142,102 172,901 41,642 34,382 391,027  Total net sales $ 852,775 $ 379,914 $ 221,389 $ 158,330 $ 1,612,408   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 Coatings $ 346,199 $ 46,468 $ 94,722 $ 106,640 $ 594,029  Performance Colors and Glass 203,280 155,284 64,853 21,236 444,653  Color Solutions 134,122 154,730 36,343 32,865 358,060  Total net sales $ 683,601 $ 356,482 $ 195,918 $ 160,741 $ 1,396,742   Revenues disaggregated by geography and reportable segment for the year ended December 31, 2016, follow:     EMEA United States Asia Pacific Latin America Total  (Dollars in thousands)  Performance Coatings $ 289,780 $ 46,063 $ 89,573 $ 101,565 $ 526,981  Performance Colors and Glass 160,475 132,432 59,121 19,436 371,464  Color Solutions 64,800 121,692 30,770 29,585 246,847  Total net sales $ 515,055 $ 300,187 $ 179,464 $ 150,586 $ 1,145,292 

Discontinued Operations (Tables

Discontinued Operations (Tables)	12 Months Ended
	Dec. 31, 2018
Discontinued Operations [Abstract]
Summary Of Discontinued Operations	   2016   Net sales $ 18,481  Cost of sales 28,473  Gross loss (9,992)  Selling, general and administrative expenses 3,094  Restructuring and impairment charges 50,902  Interest expense 325  Miscellaneous (income), net (392)  Loss from discontinued operations before income taxes (63,921)  Income tax expense 543  Loss from discontinued operations, net of income taxes $ (64,464) 

Inventories (Tables)

Inventories (Tables)	12 Months Ended
	Dec. 31, 2018
Inventories [Abstract]
Inventories	   2018 2017  (Dollars in thousands)  Raw materials $ 116,219 $ 112,300  Work in process 55,884 39,454  Finished goods 184,895 172,426  Total inventories $ 356,998 $ 324,180 

Property, Plant And Equipment (

Property, Plant And Equipment (Tables)	12 Months Ended
	Dec. 31, 2018
Property, Plant And Equipment [Abstract]
Property, Plant and Equipment	   2018 2017   (Dollars in thousands)   Land $ 55,501 $ 48,566  Buildings 214,963 199,076  Machinery and equipment 553,855 548,864  Construction in progress 80,410 28,125  Total property, plant and equipment 904,729 824,631  Total accumulated depreciation (523,388) (502,889)  Property, plant and equipment, net $ 381,341 $ 321,742 
Summary Of Fair Value And Impairment Of Long Lived Assets	   Fair Value Measurements Using Total  Description Level 1 Level 2 Level 3 Total (Losses)  (Dollars in thousands)  December 31, 2016 $ — $ — $ — $ — $ (50,902)  

Goodwill And Other Intangible_2

Goodwill And Other Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2018
Goodwill And Other Intangible Assets [Abstract]
Details and Activity of Goodwill by Segment	    Performance  Performance Color Colors and  Coatings Solutions Glass Total  (Dollars in thousands)  Goodwill, net at December 31, 2016 $ 28,090 40,421 79,785 148,296  Acquisitions 5,970 (2) 328 (4) 31,616 (1), (3) 37,914  Foreign currency adjustments 4,176 1,786 3,197 9,159  Goodwill, net at December 31, 2017 38,236 42,535 114,598 195,369  Acquisitions 8,171 (6) 8,857 (8) 8,530 (5), (7) 25,558  Foreign currency adjustments (2,055) (847) (1,561) (4,463)  Goodwill, net at December 31, 2018 $ 44,352 $ 50,545 $ 121,567 $ 216,464   (1) During 2017, the Company recorded a purchase price adjustment within the measurement period for goodwill related to the ESL acquisition. (2) During 2017, the Company recorded goodwill related to the SPC and Gardenia acquisitions. (3) During 2017, the Company recorded goodwill related to the Dip-Tech acquisition. (4) During 2017, the Company recorded a purchase price adjustment within the measurement period for goodwill related to the Cappelle acquisition. (5) During 2018, the Company recorded a purchase price adjustment within the measurement period for goodwill related to the Dip-Tech acquisition. (6) During 2018, the Company recorded goodwill related to the FMU acquisition and recorded goodwill related to the Quimicer acquisition. (7) During 2018, the Company recorded goodwill related to the MRA acquisition. (8) During 2018, the Company recorded goodwill related to the UWiZ and Diegel acquisitions.  Refer to Note 5 for additional details on acquisitions mentioned above.
Schedule Of Impairment Of Goodwill	  December 31, December 31,  2018 2017  (Dollars in thousands)  Goodwill, gross $ 274,931 $ 253,836  Accumulated impairment losses (58,467) (58,467)  Goodwill, net $ 216,464 $ 195,369 
Significant Assumptions and Ranges of Assumptions Used in Impairment Analysis of Goodwill	   Significant Assumptions 2018 2017  Weighted-average cost of capital 13.0% - 14.75 % 11.0% - 13.5 %  Residual growth rate 3.0 % 3.0 % 
Summary Of Fair Value And Impairment Of Goodwill	  Fair Value Measurements Using Total  Description Level 1 Level 2 Level 3 Total (Losses)  (Dollars in thousands)  December 31, 2016 $ — $ — $ — $ — $ (13,198) 
Details of Amortizable Intangible Assets	  Estimated  Economic Life 2018 2017  (Dollars in thousands)  Gross amortizable intangible assets:  Patents 10 - 16 years $ 5,462 $ 5,279  Land rights 20 - 40 years 4,773 4,947  Technology/know-how and other 1 - 30 years 132,084 131,070  Customer relationships 10 - 20 years 100,368 93,500  Total gross amortizable intangible assets 242,687 234,796  Accumulated amortization:  Patents (5,440) (5,226)  Land rights (2,909) (2,883)  Technology/know-how and other (48,898) (45,214)  Customer relationships (17,306) (11,114)  Total accumulated amortization (74,553) (64,437)  Amortizable intangible assets, net $ 168,134 $ 170,359 
Schedule of Indefinite-Lived Intangible Assets	   2018 2017  (Dollars in thousands)  Indefinite-lived intangibles assets:  Trade names and trademarks $ 16,819 $ 17,257 

Debt And Other Financing (Table

Debt And Other Financing (Tables)	12 Months Ended
	Dec. 31, 2018
Debt And Other Financing [Abstract]
Loans Payable And Current Portion Of Long-Term Debt	    2018 2017  (Dollars in thousands)  Loans payable $ 50 $ 16,360  Current portion of long-term debt 10,210 8,776  Loans payable and current portion of long-term debt $ 10,260 $ 25,136 
Summary Of Long-Term Debt	    2018 2017  (Dollars in thousands)   Term loan facility, net of unamortized issuance costs, maturing 2024 (1) $ 809,022 $ 645,242  Revolving credit facility — 78,000  Capital lease obligations 3,963 4,913  Other notes 8,362 7,112  Total long-term debt 821,347 735,267  Current portion of long-term debt (10,210) (8,776)  Long-term debt, less current portion $ 811,137 $ 726,491   (1) The carrying value of the term loan facility, maturing 2024, is net of unamortized debt issuance costs of $4.8 million at December 31, 2018, and $7.5 million at December 31, 2017.
Annual Maturities Of Long-term Debt	  2019 $ 10,575  2020 9,671  2021 9,393  2022 10,203  2023 9,131  Thereafter 778,077  Total maturities of long-term debt 827,050  Unamortized issuance costs on Term loan facility (4,828)  Imputed interest and executory costs on capitalized lease obligations (875)  Total long-term debt $ 821,347 
(Schedule Of Trade Accounts Receivable In International Receivable Sales Programs	   2018  (Dollars in thousands)  Trade accounts receivable sold to financial institutions $ 89,894  Cash proceeds from financial institutions 57,316  Trade accounts receivable collected to be remitted (1) 11,552 (1) Included in Accrued expense and other current liabilities

Financial Instruments (Tables)

Financial Instruments (Tables)	12 Months Ended
	Dec. 31, 2018
Financial Instruments Assets (Liabilities) Measured At Fair Value	   December 31, 2018  Carrying Fair Value  Amount Total Level 1 Level 2 Level 3  (Dollars in thousands)  Cash and cash equivalents $ 104,301 $ 104,301 $ 104,301 $ — $ —  Loans payable (50) (50) — (50) —  Term loan facility - Amended Credit Facility (1) (809,022) (796,796) — (796,796) —  Other long-term notes payable (8,362) (5,258) — (5,258) —  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) —      December 31, 2017  Carrying Fair Value  Amount Total Level 1 Level 2 Level 3  (Dollars in thousands)  Cash and cash equivalents $ 63,551 $ 63,551 $ 63,551 $ — $ —  Loans payable (16,360) (16,360) — (16,360) —  Term loan facility - Credit Facility (1) (645,242) (646,979) — (646,979) —  Revolving credit facility - Credit Facility (78,000) (79,295) — (79,295) —  Other long-term notes payable (7,112) (3,973) — (3,973) —  Interest rate swaps 1,616 1,616 — 1,616 —  Interest rate swaps (124) (124) — (124) —  Foreign currency forward contracts, net (469) (469) — (469) —  (1) The carrying values of the term loan facilities are net of unamortized debt issuance costs of $4. 8 million and $7.5 million for the period ended December 31, 2018, and December 31, 2017, respectively. 
Schedule Of (Loss) Gain Recognized In AOCI And The Amount Of (Loss) Gain Reclassified Into Earnings	  Amount of (Loss) Gain  Amount of (Loss) Gain Reclassified from Location of (Loss) Gain  Recognized in AOCL AOCL into Income Reclassified from  2018 2017 2018 2017 AOCL into Income  (Dollars in thousands)  Interest rate swaps $ (4,513) $ 1,492 $ (966) $ (527) Interest expense  Cross currency swaps 15,901 — 3,616 — Interest expense  $ 2,650 $ (527) Total Interest expense  Cross currency swaps 14,509 — Foreign currency losses, net  $ 14,509 $ — Total Foreign currency losses, net 
Effect On Derivative Instruments On Consolidated Statements Of Operations	  Amount of (Loss)  Recognized in Earnings   2018 2017 2016 Location of (Loss) in Earnings   (Dollars in thousands)  Foreign currency forward contracts $ (12) $ (2,938) $ (2,714) 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 (Loss) Reclassified from Income on Derivative (Amount  Recognized in AOCL AOCL into Income Excluded from Effectiveness Testing) Location of Gain  2018 2017 2018 2017 2018 2017 (Loss) in Earnings  (Dollars in thousands)  Cross currency swaps $ 7,243 $ — $ — $ — $ 2,261 $ — Interest expense  Net investment hedge — (10,972) — — — — Foreign currency losses, net 
Fair Value Of Derivative Instruments On Consolidated Balance Sheets	    2018 2017 Balance Sheet Location  (Dollars in thousands)  Asset derivatives:  Interest rate swaps $ — $ 1,616 Other non-current assets  Cross currency swaps 9,606 — Other current assets  Cross currency swaps 7,498 — Other non-current assets  Foreign currency forward contracts 626 661 Other current assets  Liability derivatives:  Interest rate swaps (755) (124) Accrued expenses and other current liabilities  Interest rate swaps (4,489) — Other non-current liabilities  Foreign currency forward contracts $ (896) $ (1,130) Accrued expenses and other current liabilities 
Net Investment Hedge [Member]
Effect On Derivative Instruments On Consolidated Statements Of Operations	  2018 2017  (Dollars in thousands)  Interest expense $ 33,371 $ 27,754  Foreign currency losses, net 8,187 6,554 

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2018
Income Taxes [Abstract]
Earnings Before Income Taxe Expense	   2018 2017 2016  (Dollars in thousands)  U.S. $ 2,233 $ 9,857 $ 7,416  Foreign 101,759 100,661 55,029  Total $ 103,992 $ 110,518 $ 62,445 
Income Tax Expense From Continuing Operations	  2018 2017 2016  (Dollars in thousands)  Current:  U.S. federal $ 483 $ (82) $ 4,616  Foreign 26,156 29,289 24,675  State and local 127 53 28  Total current 26,766 29,260 29,319  Deferred:  U.S. federal 2,405 24,534 379  Foreign (5,603) (1,064) (11,830)  State and local (522) 20 —  Total deferred (3,720) 23,490 (11,451)  Total income tax expense (benefit) $ 23,046 $ 52,750 $ 17,868 
Income Tax Expense (Benefit) Allocated Directly to Ferro Corporation Shareholders' Equity	  2018 2017 2016  (Dollars in thousands)  Interest rate swaps $ (1,529) $ 547 $ —  Postretirement benefit liability adjustments (16) 18 30  Net investment hedge 954 (4,025) —  Stock options exercised — — (2,355)  Total income tax (benefit) expense allocated to Ferro Corporation shareholders' equity $ (591) $ (3,460) $ (2,325) 
Reconciliation of U.S. Federal Statutory Income Tax Rate and Effective Tax Rate	   2018 2017 2016  U.S. federal statutory income tax rate 21.0 % 35.0 % 35.0 %  Foreign tax rate difference 7.6 (7.3) (8.8)  Uncertain tax positions, net of tax audit settlements 4.7 5.1 2.2  Non-deductible expenses 2.9 2.4 3.4  Global intangible low-taxed income, net 2.5 — —  Foreign currency 0.6 (0.6) (1.6)  State taxes 0.1 (0.1) (0.7)  Domestic production activities deduction — (0.6) (0.2)  Goodwill dispositions, impairments and amortization (0.3) (1.8) 8.3  Notional interest deduction (0.3) (0.5) (2.8)  Foreign derived intangible income deduction (1.1) — —  Other (3.5) (1.5) 4.8  Tax rate changes (2.1) 19.0 (0.7)  Adjustment of valuation allowances (4.5) (0.3) (7.4)  Other tax credits (5.4) (1.1) (2.9)  Effective tax rate 22.2 % 47.7 % 28.6 % 
Components of Deferred Tax Assets and Liabilities	  2018 2017  (Dollars in thousands)  Deferred tax assets:  Foreign operating loss carryforwards $ 42,551 $ 44,804  Pension and other benefit programs 39,174 36,720  Foreign tax credit carryforwards 17,356 20,054  Accrued liabilities 12,515 14,625  Other credit carryforwards 11,446 10,889  Other 8,605 5,823  State and local operating loss carryforwards 2,272 4,808  Inventories 2,732 2,679  Currency differences 2,566 7,376  Allowance for doubtful accounts 1,576 1,822  Total deferred tax assets 140,793 149,600  Deferred tax liabilities:  Property, plant and equipment and intangibles -- depreciation and amortization 29,648 38,785  Other 2,763 2,339  Unremitted earnings of foreign subsidiaries 1,575 1,163  Total deferred tax liabilities 33,986 42,287  Net deferred tax assets before valuation allowance 106,807 107,313  Valuation allowance (25,596) (32,579)  Net deferred tax assets $ 81,211 $ 74,734 
Expirations of Operating Loss Carryforwards and Tax Credit Carryforwards	   Operating Loss Tax Credit  Carryforwards Carryforwards  Expiring in: (Dollars in thousands)  2019 $ 21,072 $ 6,003  2020-2024 33,969 8,140  2025-2029 16,411 9,025  2030-2034 13,112 4,906  2035-2039 5,093 3,953  2040-Indefinitely 132,341 1,004  Total $ 221,998 $ 33,031 
Classification of Net Deferred Income Tax Assets	  2018 2017  (Dollars in thousands)  Non-current assets $ 103,488 $ 108,025  Non-current liabilities (22,277) (33,291)  Net deferred tax assets $ 81,211 $ 74,734 
Activity and Balances of Unrecognized Tax Benefits	   2018 2017 2016  (Dollars in thousands)  Balance at beginning of year $ 28,470 $ 30,085 $ 34,541  Additions based on tax positions related to the current year 4,041 1,609 1,445  Additions for tax positions of prior years 24 2,057 170  Reductions for tax positions of prior years (1,710) (288) (2,827)  Reductions as a results of expiring statutes of limitations (420) (6,284) (2,718)  Foreign currency adjustments (786) 1,644 (526)  Settlements with taxing authorities (4,750) (353) —  Balance at end of year $ 24,869 $ 28,470 $ 30,085 

Retirement Benefits (Tables)

Retirement Benefits (Tables)	12 Months Ended
	Dec. 31, 2018
Retirement Benefits [Abstract]
Net Periodic Benefit (Credit) Cost	   U.S. Pension Plans Non-U.S. Plans  2018 2017 2016 2018 2017 2016  (Dollars in thousands)  Service cost $ 11 $ 11 $ 16 $ 1,714 $ 1,717 $ 1,372  Interest cost 11,308 14,594 15,552 2,551 2,468 3,319  Expected return on plan assets (15,982) (20,111) (19,735) (862) (896) (1,712)  Amortization of prior service cost — 7 11 39 42 37  Mark-to-market actuarial net losses (gains) 16,633 (5,432) 9,127 3,840 (1,459) 11,180  Curtailment and settlement effects losses — 2,581 — 372 39 688  Special termination benefits — — — 232 52 330  Net periodic benefit cost (credit) $ 11,970 $ (8,350) $ 4,971 $ 7,886 $ 1,963 $ 15,214  Weighted-average assumptions:  Discount rate 3.80 % 4.40 % 4.70 % 2.35 % 2.24 % 3.12 %  Rate of compensation increase N/A N/A N/A 3.18 % 3.14 % 3.16 %  Expected return on plan assets 7.70 % 8.20 % 8.20 % 2.55 % 2.54 % 3.41 % 
Defined Benefit Pension Plans	   U.S. Pension Plans Non-U.S. Pension Plans  2018 2017 2018 2017  (Dollars in thousands)  Change in benefit obligation  Benefit obligation at beginning of year $ 303,170 $ 345,202 $ 117,146 $ 103,490  Service cost 11 11 1,714 1,717  Interest cost 11,308 14,594 2,551 2,468  Settlements (25) (51,124) (1,330) (387)  Special termination benefits — — 232 52  Plan participants' contributions — — 21 25  Benefits paid (20,165) (23,469) (2,825) (2,826)  Net transfer in — — 518 416  Actuarial (gain) loss (14,414) 17,956 2,241 (1,381)  Exchange rate effect — — (4,994) 13,572  Benefit obligation at end of year $ 279,885 $ 303,170 $ 115,274 $ 117,146  Accumulated benefit obligation at end of year $ 279,885 $ 303,170 $ 105,137 $ 112,732  Change in plan assets:  Fair value of plan assets at beginning of year $ 239,260 $ 272,549 $ 38,270 $ 33,683  Actual return on plan assets (15,065) 40,919 (1,109) 933  Employer contributions 420 385 3,185 2,515  Plan participants' contributions — — 21 25  Benefits paid (20,165) (23,469) (2,825) (2,826)  Effect of settlements (25) (51,124) (1,330) (387)  Exchange rate effect — — (1,682) 4,327  Fair value of plan assets at end of year $ 204,425 $ 239,260 $ 34,530 $ 38,270  Amounts recognized in the balance sheet:  Accrued expenses and other current liabilities $ (404) $ (422) $ (4,174) $ (2,354)  Postretirement and pension liabilities (75,056) (63,488) (76,570) (76,522)  Funded status $ (75,460) $ (63,910) $ (80,744) $ (78,876)   During 2017, the Company settled a portion of its pension obligation in the U.S. for $51.1 million.      U.S. Pension Plans Non-U.S. Pension Plans  2018 2017 2018 2017  (Dollars in thousands)  Weighted-average assumptions as of December 31:  Discount rate 4.40 % 3.80 % 2.61 % 2.35 %  Rate of compensation increase N/A N/A 3.19 % 3.18 %  Pension plans with benefit obligations in excess of plan assets:  Benefit obligations $ 279,885 $ 303,170 $ 87,955 $ 87,990  Plan assets 204,425 239,260 7,212 9,114  Pension plans with accumulated benefit obligations in excess of plan assets:  Projected benefit obligations $ 279,885 $ 303,170 $ 85,262 $ 84,206  Accumulated benefit obligations 279,885 303,170 75,343 73,902  Plan assets 204,425 239,260 4,637 5,464  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  2018 2017 2018 2017  (Dollars in thousands)  Prior service (cost):  Balance at beginning of year $ — $ (7) $ (261) $ (265)  Amounts recognized as net periodic benefit costs — 7 39 42  Exchange rate effects — — 16 (38)  Balance at end of year $ — $ — $ (206) $ (261)  Estimated amounts to be amortized in 2019 $ — $ (39) 
Fair Value of Pension Plan Assets	   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 1,077 — — 1,077  Other 2,607 2,126 — 4,733  Equities:  Mutual funds 455 — — 455  Other assets 82 — — 82  Total $ 4,253 $ 2,959 $ 27,318 $ 34,530  The fair values of our pension plan assets at December 31, 2017, by asset category are as follows:      Level 1 Level 2 Level 3 Total  (Dollars in thousands)  U.S. plans:  Fixed income:  Cash and cash equivalents $ 3 $ — $ — $ 3  Guaranteed deposits — 1,802 — 1,802  Mutual funds 74,875 — — 74,875  Commingled funds — 667 269 936  Equities:  U.S. common stocks 6,678 — — 6,678  Mutual funds 129,887 — — 129,887  Commingled funds — 999 — 999  Total assets in the fair value hierarchy $ 211,443 $ 3,468 $ 269 $ 215,180  Investments measured at net asset value — — — 24,080  Investments at fair value $ 211,443 $ 3,468 $ 269 $ 239,260  Non-U.S. plans  Fixed income:  Guaranteed deposits $ 42 $ 751 $ 30,127 $ 30,920  Mutual funds 1,122 — — 1,122  Other 3,293 2,332 — 5,625  Equities:  Mutual funds 517 — — 517  Other assets 86 — — 86  Total $ 5,060 $ 3,083 $ 30,127 $ 38,270 
Schedule of Rollforward of Level 3 Assets	  Guaranteed Commingled  deposits Real estate funds Total  (Dollars in thousands)  Balance at December 31, 2016 $ 26,332 $ 22,257 $ 371 $ 48,960  Sales (465) — — (465)  Gains (losses) included in earnings 531 1,823 (102) 2,252  Transfers — (24,080) — (24,080)  Exchange rate effect 3,729 — — 3,729  Balance at December 31, 2017 $ 30,127 $ — $ 269 $ 30,396  Sales (487) — — (487)  (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 
Future Pension Benefit Payments	   U.S. Plans Non-U.S. Plans  (Dollars in thousands)  2019 $ 19,290 $ 7,825  2020 19,376 4,268  2021 19,577 4,404  2022 19,779 5,710  2023 19,708 4,360  2024-2028 96,668 25,969 
Postretirement Health Care and Life Insurance Benefit Plans	   2018 2017 2016  (Dollars in thousands)  Net periodic benefit cost:  Interest expense $ 732 $ 843 $ 944  Mark-to-market actuarial net (gain) loss (2,580) 458 (164)  Total net periodic benefit (credit) cost $ (1,848) $ 1,301 $ 780  Weighted-average assumptions:  Discount rate 3.70 % 4.20 % 4.50 %  Current trend rate for health care costs 6.40 % 6.50 % 6.60 %  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 $ 44 $ (38)  Effect on postretirement benefit obligation 894 (789)       2018 2017  (Dollars in thousands)  Change in benefit obligation:  Benefit obligation at beginning of year $ 20,725 $ 21,056  Interest cost 732 843  Benefits paid (1,679) (1,632)  Actuarial (gain) loss (2,580) 458  Benefit obligation at end of year $ 17,198 $ 20,725  Change in plan assets:  Fair value of plan assets at beginning of year $ — $ —  Employer contributions 1,679 1,632  Benefits paid (1,679) (1,632)  Fair value of plan assets at end of year $ — $ —  Amounts recognized in the balance sheet:  Accrued expenses and other current liabilities $ (1,966) $ (2,132)  Postretirement and pension liabilities (15,232) (18,593)  Funded status $ (17,198) $ (20,725)  Weighted-average assumptions as of December 31:  Discount rate 4.30 % 3.70 %  Current trend rate for health care costs 6.30 % 6.40 %  Ultimate trend rate for health care costs 4.50 % 4.50 %  Year that ultimate rend rate is reached 2036 2036 
Future Postretirement Health Care and Life Insurance Benefit Payments	   Before Medicare After Medicare  Subsidy Subsidy  (Dollars in thousands)  2019 $ 1,968 $ 1,758  2020 1,881 1,681  2021 1,796 1,608  2022 1,704 1,528  2023 1,615 1,450  2024-2028 6,689 6,038 

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	12 Months Ended
	Dec. 31, 2018
Stock Options [Member]
Details Of Weighted-Average Grant-Date Fair Values And Assumptions Used For Estimating Fair Values	   2018 2017 2016  Weighted-average grant-date fair value $ 8.91 $ 7.29 $ 4.94  Expected life, in years 5.4 6.0 6.0  Risk-free interest rate 2.7 % 1.9% - 2.3 % 1.4% - 1.6 %  Expected volatility 39.7 % 48.0 % - 51.5 % 52.0% - 53.6 %  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, 2017 1,567,269 10.08  Granted 150,300 22.01  Exercised (102,880) 7.43  Forfeited or expired (1,000) 17.26  Outstanding at December 31, 2018 1,613,689 $ 11.36 5.50 $ 7,929  Exercisable at December 31, 2018 1,230,261 $ 9.87 4.64 $ 7,157  Vested or expected to vest at December 31, 2018 1,613,689 $ 11.36 5.50 $ 7,929 
Information Related to Stock Options Exercised	   2018 2017 2016  (Dollars in thousands)  Proceeds from the exercise of stock options $ 764 $ 4,526 $ 1,140  Intrinsic value of stock options exercised 1,612 2,898 1,496  Income tax benefit related to stock options exercised 338 1,014 524 
Summary of Stock-Based Compensation Expense	   2018 2017 2016  (Dollars in thousands)  Compensation expense recorded in Selling, general and administrative expenses $ 1,560 $ 1,588 $ 1,388  Deferred income tax benefits related to compensation expense 328 333 486  Total fair value of stock options vested 1,418 1,388 1,757  Unrecognized compensation cost 644 621 513  Expected weighted-average recognition period for unrecognized compensation, in years 2.7 2.0 2.1 
Performance Share Units [Member]
Summary of Stock-Based Compensation Activity	   Weighted-  Average  Remaining  Number of Contractual  Units Term   Outstanding at December 31, 2017 621,490  Granted 244,062  Earned (321,382)  Forfeited or expired (5,970)  Outstanding at December 31, 2018 538,200 0.7  Vested or expected to vest at December 31, 2018 538,200 0.7 
Summary of Stock-Based Compensation Expense	   2018 2017 2016  (Dollars in thousands)  Compensation expense recorded in Selling, general and administrative expenses $ 4,156 $ 6,881 $ 3,437  Deferred income tax benefits related to compensation expense 873 1,445 1,203  Unrecognized compensation cost 3,670 3,801 3,733  Expected weighted-average recognition period for unrecognized compensation, in years 1.4 1.4 2.0 

Restructuring And Cost Reduct_2

Restructuring And Cost Reduction Programs (Tables)	12 Months Ended
	Dec. 31, 2018
Restructuring And Cost Reduction Programs [Abstract]
Summary of Charges Associated with Restructuring Programs by Major Type of Charges	   Employee Asset  Severance Other Costs Impairment Total  (Dollars in thousands)  Expected restructuring charges:  Global Cost Reduction Program $ 53,861 36,935 1,176 $ 91,972  Total expected restructuring charges $ 53,861 $ 36,935 $ 1,176 $ 91,972   Restructuring charges incurred:  Global Cost Reduction Program $ 1,353 1,356 — $ 2,709  Charges incurred in 2016 $ 1,353 $ 1,356 $ — $ 2,709  Global Cost Reduction Program 5,167 3,500 1,176 9,843  Charges incurred in 2017 $ 5,167 $ 3,500 $ 1,176 $ 9,843  Global Cost Reduction Program 5,794 7,501 — 13,295  Charges incurred in 2018 $ 5,794 $ 7,501 $ — $ 13,295  Cumulative restructuring charges incurred:  Global Cost Reduction Program 40,818 33,480 1,176 75,474  Cumulative restructuring charges incurred as of December 31, 2018 $ 40,818 $ 33,480 $ 1,176 $ 75,474 
Summary of Charges Associated with Restructuring Programs by Segments	   Total Cumulative  Expected Charges To  Charges 2018 2017 2016 Date  (Dollars in thousands)  Performance Coatings $ 15,343 $ 274 $ 2,948 $ 192 $ 7,326  Performance Colors and Glass 25,546 23 971 205 20,055  Color Solutions 7,327 148 1,250 630 4,337  Segment Total 48,216 445 5,169 1,027 31,718  Corporate Restructuring Charges 43,756 12,850 4,674 1,682 43,756  Total Restructuring Charges $ 91,972 $ 13,295 $ 9,843 $ 2,709 $ 75,474 
Summary Of Accruals Related To Restructuring And Cost Reduction Programs	   Employee Asset  Severance Other Costs Impairment Total  (Dollars in thousands)  Balance at December 31, 2015 $ 693 $ 2,077 $ — $ 2,770  Restructuring charges 1,353 $ 1,356 $ — 2,709  Cash payments (1,634) (1,089) — (2,723)  Non-cash items (173) (855) — (1,028)  Balance at December 31, 2016 $ 239 $ 1,489 $ — $ 1,728  Restructuring charges $ 5,167 $ 3,500 $ 1,176 $ 9,843  Cash payments (3,316) (500) — (3,816)  Non-cash items 196 (3,255) (1,176) (4,235)  Balance at December 31, 2017 $ 2,286 $ 1,234 $ — $ 3,520  Restructuring charges $ 5,794 7,501 — $ 13,295  Cash payments (6,749) (2,462) — (9,211)  Non-cash items (180) (4,985) — (5,165)  Balance at December 31, 2018 $ 1,151 $ 1,288 $ — $ 2,439 

Leases (Tables)

Leases (Tables)	12 Months Ended
	Dec. 31, 2018
Leases [Abstract]
Assets Held under Capital Leases and Included in Property, Plant and Equipment	   2018 2017  (Dollars in thousands)  Gross amounts capitalized  Buildings $ 4,705 $ 4,781  Equipment 3,516 3,710  8,221 8,491  Accumulated amortization  Buildings (3,238) (3,190)  Equipment (2,798) (2,420)  (6,036) (5,610)  Net assets under capital leases $ 2,185 $ 2,881 
Future Minimum Lease Payments under All Non-Cancelable Leases	   Capital Leases Operating Leases  (Dollars in thousands)  2019 $ 1,048 $ 11,419  2020 755 7,314  2021 477 5,302  2022 1,287 3,301  2023 279 1,971  Thereafter 992 2,401  Net minimum lease payments $ 4,838 $ 31,708  Less amount representing imputed interest and executory costs 875  Present value of net minimum lease payments 3,963  Less current portion 679  Long-term obligations at December 31, 2018 $ 3,284 

Miscellaneous Expense (Income_2

Miscellaneous Expense (Income), Net (Tables)	12 Months Ended
	Dec. 31, 2018
Miscellaneous Expense (Income), Net [Abstract]
Components Of Miscellaneous Expense (Income), Net	   2018 2017 2016  (Dollars in thousands)  Pension expense (income) $ 16,281 $ (6,814) $ 19,577  Argentina export tax matter 507 (3,549) 1,128  Gain on change of control (2,586) (2,561) —  Modification of debt 1,046 — —  Dividends/royalty from affiliates, net (720) (993) (1,245)  Equity method investment (income) loss (55) 261 (260)  (Gain) loss on sale of assets (440) 722 (3,891)  Contingent consideration (adjustment) payment (1,971) 1,721 —  Bank fees 2,648 2,229 1,855  Other, net 1,260 548 (247)  Total Miscellaneous expense (income), net $ 15,970 $ (8,436) $ 16,917 

Earnings Per Share (Tables)

Earnings Per Share (Tables)	12 Months Ended
	Dec. 31, 2018
Earnings Per Share [Abstract]
Calculations Of Basic And Diluted Earnings Per Share	   2018 2017 2016  (Dollars in thousands, except per share amounts)  Basic earnings (loss) per share computation:  Net income (loss) attributable to Ferro Corporation common shareholders $ 80,093 $ 57,054 $ (20,817)  Adjustment for loss from discontinued operations — — 64,464  Total $ 80,093 $ 57,054 $ 43,647  Weighted-average common shares outstanding 83,940 83,713 83,298  Basic earnings per share from continuing operations attributable to Ferro Corporation common shareholders $ 0.95 $ 0.68 $ 0.52  Diluted earnings (loss) per share computation:  Net income (loss) attributable to Ferro Corporation common shareholders $ 80,093 $ 57,054 $ (20,817)  Adjustment for loss from discontinued operations — — 64,464  Total $ 80,093 $ 57,054 $ 43,647  Weighted-average common shares outstanding 83,940 83,713 83,298  Assumed exercise of stock options 772 762 549  Assumed satisfaction of deferred stock unit conditions — — 36  Assumed satisfaction of restricted stock unit conditions 301 351 544  Assumed satisfaction of performance stock unit conditions 72 330 483  Weighted-average diluted shares outstanding 85,085 85,156 84,910  Diluted earnings per share from continuing operations attributable to Ferro Corporation common shareholders $ 0.94 $ 0.67 $ 0.51 

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive (Loss) (Tables)	12 Months Ended
	Dec. 31, 2018
Accumulated Other Comprehensive (Loss) [Abstract]
Changes In Accumulated Other Comprehensive (Loss) By Component, Net Of Tax	   Postretirement Net Gain  Benefit Liability Translation on Cash  Adjustments Adjustments Flow Hedges Total  (Dollars in thousands)  Balance at December 31, 2015 $ 811 $ (62,129) $ — $ (61,318)  Other comprehensive (loss) before reclassifications, before tax — (46,770) — (46,770)  Reclassification to earnings:  Postretirement benefit liabilities gain, before tax 360 — — 360  Foreign currency translation adjustment, before tax (1) — 1,115 — 1,115  Current period other comprehensive income (loss), before tax 360 (45,655) — (45,295)  Tax effect 30 — — 30  Current period other comprehensive income (loss), net of tax 330 (45,655) — (45,325)  Balance at December 31, 2016 1,141 (107,784) — (106,643)  Other comprehensive income 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, before tax 42 — — 42  Current period other comprehensive income, before tax 42 26,181 1,492 27,715  Tax effect 18 (4,025) 547 (3,460)  Current period other comprehensive income, net of tax 24 30,206 945 31,175  Balance at December 31, 2017 1,165 (77,578) 945 (75,468)  Other comprehensive (loss) income 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 (loss), before tax (55) — — (55)  Current period other comprehensive (loss), before tax (55) (24,658) (5,771) (30,484)  Tax effect (16) 954 (1,529) (591)  Current period other comprehensive (loss), net of tax (39) (25,612) (4,242) (29,893)  Balance at December 31, 2018 $ 1,126 $ (103,190) $ (3,297) $ (105,361) (1) Includes a release of accumulated foreign currency translation of $1.1 million related to the Company’s sale of the Europe-based Polymer Additives business (Note 4), which is included in Loss from discontinued operations, net of income taxes in our consolidated statements of operations for the year ended December 31, 2016.

Reporting For Segments (Tables)

Reporting For Segments (Tables)	12 Months Ended
	Dec. 31, 2018
Reporting For Segments [Abstract]
Net Sales To External Customers By Segment	   2018 2017 2016  (Dollars in thousands)  Performance Coatings $ 733,926 $ 594,029 $ 526,981  Performance Colors and Glass 487,455 444,653 371,464  Color Solutions 391,027 358,060 246,847  Total net sales $ 1,612,408 $ 1,396,742 $ 1,145,292 
Segment's Gross Profit And Reconciliations To Income Before Income Taxes	   2018 2017 2016  (Dollars in thousands)  Performance Coatings $ 165,708 $ 145,797 $ 139,454  Performance Colors and Glass 167,446 157,544 133,997  Color Solutions 124,852 113,694 84,466  Other cost of sales (2,073) (814) (1,539)  Total gross profit 455,933 416,221 356,378  Selling, general and administrative expenses 278,566 265,418 227,286  Restructuring and impairment charges 13,295 11,409 15,907  Other expense, net 60,080 28,876 50,740  Income before income taxes $ 103,992 $ 110,518 $ 62,445 
Summary of Segment's Expenditures for Long-Lived Assets	    2018 2017 2016  (Dollars in thousands)  Performance Coatings $ 41,106 $ 19,734 $ 9,139  Performance Colors and Glass 8,858 9,374 7,123  Color Solutions 24,940 20,356 4,867  Total segment expenditures for long-lived assets 74,904 49,464 21,129  Unallocated corporate expenditures for long-lived assets 5,715 1,088 2,896  Total expenditures for long lived assets (1) $ 80,619 $ 50,552 $ 24,025 _____________________ (1) Excludes capital expenditures of discontinued operations of $0.9 million in 2016.
Summary of Net Sales by Geographic Region	  2018 2017 2016  (Dollars in thousands)  United States $ 379,914 $ 356,482 $ 300,187  Spain 305,049 214,732 188,972  Other international 927,445 825,528 656,133  Total net sales $ 1,612,408 $ 1,396,742 $ 1,145,292 
Summary of Long-Lived Assets by Geographic Region	   2018 2017  (Dollars in thousands)  Spain $ 78,094 $ 76,142  United States 56,263 44,956  Mexico 39,019 16,989  Other international 207,965 183,655  Total long-lived assets $ 381,341 $ 321,742 

Unconsolidated Affiliates Acc_2

Unconsolidated Affiliates Accounted For Under the Equity Method (Tables)	12 Months Ended
	Dec. 31, 2018
Unconsolidated Affiliates Accounted For Under the Equity Method [Abstract]
Summarized Condensed Income Statement	   2018 2017 2016  (Dollars in thousands)  Net sales $ 18,950 $ 33,851 $ 42,555  Gross profit 3,343 5,655 4,842  Income (loss) from continuing operations 746 (224) 694  Net income (loss) 596 (220) 236 
Summarized Balance Sheet	   2018 2017  (Dollars in thousands)  Current assets $ 17,305 $ 19,908  Non-current assets 3,356 10,834  Current liabilities (3,832) (13,207)  Non-current liabilities (339) (467) 
Transactions with Equity-Method Investees	   2018 2017 2016  (Dollars in thousands)  Sales $ 4,898 $ 5,378 $ 4,589  Purchases 15 2,006 758  Dividends and interest received 415 920 268  Commission and royalties received 305 130 1,003  Commissions and royalties paid — 57 26 

Quarterly Data (Tables)

Quarterly Data (Tables)	12 Months Ended
	Dec. 31, 2018
Quarterly Data [Abstract]
Summary of Quarterly Financial Information	   Net Income Earnings (Loss) Attributable to  (Loss) 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)  2017  Quarter 1 $ 320,555 $ 98,794 $ 22,121 $ 21,898 $ 0.26 $ 0.26  Quarter 2 348,632 108,342 21,229 21,025 0.25 0.25  Quarter 3 350,012 103,616 22,965 22,817 0.27 0.27  Quarter 4 377,543 105,469 (8,547) (8,686) (0.10) (0.10)  Total $ 1,396,742 $ 416,221 $ 57,768 $ 57,054 $ 0.68 $ 0.67  2018  Quarter 1 $ 405,532 $ 118,686 $ 23,598 $ 23,391 $ 0.28 $ 0.27  Quarter 2 416,239 126,645 29,861 29,668 0.35 0.35  Quarter 3 395,163 105,487 16,143 16,058 0.19 0.19  Quarter 4 395,474 105,115 11,344 10,976 0.13 0.13  Total $ 1,612,408 $ 455,933 $ 80,946 $ 80,093 $ 0.95 $ 0.94 

Our Business (Details)

Our Business (Details)	12 Months Ended
	Dec. 31, 2018segment
Significant Accounting Policies [Abstract]
Business units	4

Significant Accounting Polici_4

Significant Accounting Policies (Narrative) (Details) $ in Thousands	Jan. 01, 2018USD ($)	Dec. 31, 2018USD ($)entitycustomer	Dec. 31, 2017USD ($)	Dec. 31, 2016USD ($)	Jan. 01, 2019USD ($)
Significant Accounting Policies [Line Items]
Number of legal entities consolidated | entity		5
Expenditures for company-sponsored research and development activities		$ 40,200	$ 36,400	$ 27,300
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%
Retained earnings		$ 255,978	171,744
Deferred income taxes		$ 81,211	74,734
Selling, General And Administrative Expenses To Other Expense (Income) [Member]
Significant Accounting Policies [Line Items]
Reclassification of income (loss)			$ 6,800
Accounting Standards Update 2017-07 [Member] | Selling, General And Administrative Expenses To Other Expense (Income) [Member]
Significant Accounting Policies [Line Items]
Reclassification of income (loss)				(14,400)
Accounting Standards Update 2017-07 [Member] | Cost Of Sales To Other Expense (Income) [Member]
Significant Accounting Policies [Line Items]
Reclassification of income (loss)				$ (5,200)
Accounting Standards Update 2016-16 [Member]
Significant Accounting Policies [Line Items]
Retained earnings	$ 4,100
Deferred income taxes	4,700
Other receivables	$ (600)
Accounting Standards Update 2016-02 [Member] | Right-Of-Use Assets [Member] | Subsequent Event [Member]
Significant Accounting Policies [Line Items]
Impact of adoption of ASU on consolidated balance sheet					$ 28,000
Accounting Standards Update 2016-02 [Member] | Lease Liabilities [Member] | Subsequent Event [Member]
Significant Accounting Policies [Line Items]
Impact of adoption of ASU on consolidated balance sheet					$ 30,000
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, 2018	Dec. 31, 2017	Dec. 31, 2016
Significant Accounting Policies [Abstract]
Allowance for doubtful accounts	$ 5,504	$ 7,821	$ 8,166
Bad debt expense	$ 681	$ 44	$ 1,383

Significant Accounting Polici_6

Significant Accounting Policies (Estimated Lives of Prperty, Plant and Equipment) (Details)	12 Months Ended
	Dec. 31, 2018
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, 2018	Dec. 31, 2017	Dec. 31, 2016
Disaggregation of Revenue [Line Items]
Total net sales	$ 1,612,408	$ 1,396,742	$ 1,145,292
Performance Coatings [Member]
Disaggregation of Revenue [Line Items]
Total net sales	733,926	594,029	526,981
Performance Colors And Glass [Member]
Disaggregation of Revenue [Line Items]
Total net sales	487,455	444,653	371,464
Color Solutions [Member]
Disaggregation of Revenue [Line Items]
Total net sales	391,027	358,060	246,847
EMEA [Member]
Disaggregation of Revenue [Line Items]
Total net sales	852,775	683,601	515,055
EMEA [Member] | Performance Coatings [Member]
Disaggregation of Revenue [Line Items]
Total net sales	475,435	346,199	289,780
EMEA [Member] | Performance Colors And Glass [Member]
Disaggregation of Revenue [Line Items]
Total net sales	235,238	203,280	160,475
EMEA [Member] | Color Solutions [Member]
Disaggregation of Revenue [Line Items]
Total net sales	142,102	134,122	64,800
United States [Member]
Disaggregation of Revenue [Line Items]
Total net sales	379,914	356,482	300,187
United States [Member] | Performance Coatings [Member]
Disaggregation of Revenue [Line Items]
Total net sales	49,050	46,468	46,063
United States [Member] | Performance Colors And Glass [Member]
Disaggregation of Revenue [Line Items]
Total net sales	157,963	155,284	132,432
United States [Member] | Color Solutions [Member]
Disaggregation of Revenue [Line Items]
Total net sales	172,901	154,730	121,692
Asia Pacific [Member]
Disaggregation of Revenue [Line Items]
Total net sales	221,389	195,918	179,464
Asia Pacific [Member] | Performance Coatings [Member]
Disaggregation of Revenue [Line Items]
Total net sales	108,623	94,722	89,573
Asia Pacific [Member] | Performance Colors And Glass [Member]
Disaggregation of Revenue [Line Items]
Total net sales	71,124	64,853	59,121
Asia Pacific [Member] | Color Solutions [Member]
Disaggregation of Revenue [Line Items]
Total net sales	41,642	36,343	30,770
Latin America [Member]
Disaggregation of Revenue [Line Items]
Total net sales	158,330	160,741	150,586
Latin America [Member] | Performance Coatings [Member]
Disaggregation of Revenue [Line Items]
Total net sales	100,818	106,640	101,565
Latin America [Member] | Performance Colors And Glass [Member]
Disaggregation of Revenue [Line Items]
Total net sales	23,130	21,236	19,436
Latin America [Member] | Color Solutions [Member]
Disaggregation of Revenue [Line Items]
Total net sales	$ 34,382	$ 32,865	$ 29,585

Discontinued Operations (Narrat

Discontinued Operations (Narrative) (Details) $ in Thousands, € in Millions	12 Months Ended
	Dec. 31, 2018USD ($)	Dec. 31, 2017USD ($)	Dec. 31, 2016EUR (€)	Dec. 31, 2016USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Capital contribution to subsidiaries	$ 80,619	$ 50,552		$ 24,945
Polymer Additives [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Capital contribution to subsidiaries			€ 12	13,600
Impairment charges				50,900
Polymer Additives [Member] | Translation Adjustments [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Impairment charges				$ 1,100

Discontinued Operations (Summar

Discontinued Operations (Summary Of Discontinued Operations) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2016USD ($)
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Loss from discontinued operations, net of income taxes	$ (64,464)
Discontinued Operations [Member] | Polymer Additives and Specialty Plastics [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Net sales	18,481
Cost of sales	28,473
Gross loss	(9,992)
Selling, general and administrative expenses	3,094
Restructuring and impairment charges	50,902
Interest expense	325
Miscellaneous (income), net	(392)
Loss from discontinued operations before income taxes	(63,921)
Income tax expense	543
Loss from discontinued operations, net of income taxes	$ (64,464)

Aquisitions (Narrative) (Detail

Aquisitions (Narrative) (Details) $ in Thousands, € in Millions, $ in Millions	Oct. 01, 2018EUR (€)	Oct. 01, 2018USD ($)	Sep. 25, 2018TWD ($)	Sep. 25, 2018USD ($)	Aug. 31, 2018EUR (€)	Aug. 31, 2018USD ($)	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 ($)	Dec. 09, 2016EUR (€)	Dec. 09, 2016USD ($)	Oct. 31, 2016USD ($)	Aug. 01, 2016USD ($)	Jun. 01, 2016EUR (€)	Jun. 01, 2016USD ($)	Jan. 05, 2016USD ($)	Dec. 31, 2018USD ($)	Dec. 31, 2017USD ($)	Dec. 31, 2016USD ($)	Oct. 01, 2018USD ($)	Nov. 01, 2017USD ($)	Apr. 24, 2017USD ($)	Dec. 09, 2016USD ($)
Business Acquisition [Line Items]
Equity method investment, realized gain (loss) on disposal																							$ 2,586	$ 2,561
Acquired intangible asset amortization costs																							15,800	13,100	$ 8,900
Research and development costs																							40,200	36,400	27,300
Goodwill																							216,464	195,369	148,296
Goodwill impairment charge																									13,198
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
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			$ 823.4	$ 26,900
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%
Equity method investment, realized gain (loss) on disposal																							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
Acquired business contributed net sales																							111,500	19,400
Acquired business contributed net income (loss)																							14,100	(1,700)
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
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
Acquired business contributed net sales																							28,600	18,200
Acquired business contributed net income (loss)																							(5,500)	(2,200)
Acquisition costs																							100	3,200
Amortizable intangible assets																							41,200
Amortization of inventory step up costs																								1,100
Acquired intangible asset amortization costs																							3,900	1,600
Research and development costs																							5,900	2,600
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
Electro-Science Laboratories (“ESL”) [Member]
Business Acquisition [Line Items]
Business acquisition, percentage of voting interests acquired																		100.00%
Business acquisition																		$ 78,500
Acquired business contributed net sales																							83,000	44,300	6,100
Acquired business contributed net income (loss)																							18,200	5,100	500
Acquisition costs																								300	1,900
Amortizable intangible assets																		39,700
Goodwill																		19,000
Personal and real property																		2,900
Deferred tax liabilities																		2,000
Net working capital																		$ 18,900
Cappelle Pigments NV (“Cappelle”) [Member]
Business Acquisition [Line Items]
Business acquisition, percentage of voting interests acquired																100.00%													100.00%
Business acquisition																€ 49.8	$ 52,700
Acquired business contributed net sales																							71,800	71,800	2,200
Acquired business contributed net income (loss)																							$ 6,400	$ 5,400	$ (1,800)
Goodwill																													$ 3,800
Personal and real property																													25,000
Deferred tax liabilities																													3,800
Debt																€ 9.8													10,400
Net working capital																													$ 27,700
Delta Performance Products, LLC [Member]
Business Acquisition [Line Items]
Business acquisition																			$ 4,400
Amortizable intangible assets																			3,200
Goodwill																			400
Deferred tax assets																			200
Net working capital																			$ 600
Pinturas Benicarló, S.L. (“Pinturas”) [Member]
Business Acquisition [Line Items]
Business acquisition, percentage of voting interests acquired																					100.00%
Business acquisition																				€ 16.5	$ 18,400
Amortizable intangible assets																					8,800
Goodwill																					3,900
Personal and real property																					700
Deferred tax liabilities																					2,700
Net working capital																					$ 7,700
Ferer Dis Ticaret Ve Kimyasallar Anonim Sirketi A.S. (“Ferer”) [Member]
Business Acquisition [Line Items]
Business acquisition, percentage of voting interests acquired																						100.00%
Cash payments to acquire business																						$ 9,400
Amortizable intangible assets																						3,300
Goodwill																						4,500
Personal and real property																						600
Deferred tax liabilities																						700
Net working capital																						$ 1,700
PT Ferro Materials Utama ("FMU") [Member]
Business Acquisition [Line Items]
Total ownership								100.00%

Inventories (Narrative) (Detail

Inventories (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Inventories [Abstract]
Terms of precious metals consignment agreements, maximum	1 year
Fees under precious metals consignment agreements	$ 2.1	$ 1.2	$ 0.8
Fair value of precious metals on hand under consignment agreements	$ 55.2	$ 37.7

Inventories (Inventories) (Deta

Inventories (Inventories) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Inventories [Abstract]
Raw materials	$ 116,219	$ 112,300
Work in process	55,884	39,454
Finished goods	184,895	172,426
Total inventories	$ 356,998	$ 324,180

Property, Plant And Equipment_2

Property, Plant And Equipment (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Property, Plant and Equipment [Line Items]
Depreciation expense	$ 38,100	$ 36,900	$ 37,900
Unpaid capital expenditure liabilities	$ 13,600	$ 8,800	5,000
Impairments of assets held for use			50,902
Europe-based Polymer Additives [Member]
Property, Plant and Equipment [Line Items]
Assets held for sale, impairment charge			50,900
AUSTRALIA
Property, Plant and Equipment [Line Items]
Gain (loss) on assets sold			$ 3,900

Property, Plant And Equipment_3

Property, Plant And Equipment (Property, Plant And Equipment) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Property Plant And Equipment [Line Items]
Total property, plant and equipment	$ 904,729	$ 824,631
Total accumulated depreciation	(523,388)	(502,889)
Property, plant and equipment, net	381,341	321,742
Land [Member]
Property Plant And Equipment [Line Items]
Total property, plant and equipment	55,501	48,566
Building [Member]
Property Plant And Equipment [Line Items]
Total property, plant and equipment	214,963	199,076
Machinery and Equipment [Member]
Property Plant And Equipment [Line Items]
Total property, plant and equipment	553,855	548,864
Construction in Progress [Member]
Property Plant And Equipment [Line Items]
Total property, plant and equipment	$ 80,410	$ 28,125

Property, Plant And Equipment_4

Property, Plant And Equipment (Summary Of Fair Value And Impairment Of Long Lived Assets) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2016USD ($)
Property, Plant And Equipment [Abstract]
Total losses on assets held for use	$ (50,902)

Goodwill And Other Intangible_3

Goodwill And Other Intangible Assets (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Goodwill And Other Intangible Assets [Abstract]
Goodwill impairment charge			$ 13,198
Amortization expense related to amortizable intangible assets	$ 15,800	$ 13,100	$ 8,900
Expected aggregate amortization expense 2019	16,700
Expected aggregate amortization expense 2020	15,500
Expected aggregate amortization expense 2021	14,500
Expected aggregate amortization expense 2022	14,300
Expected aggregate amortization expense 2023	$ 14,100

Goodwill And Other Intangible_4

Goodwill And Other Intangible Assets (Details and Activity of Goodwill by Segment) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Acquired Finite-Lived Intangible Assets [Line Items]
Goodwill net, beginning balance	$ 195,369	$ 148,296
Acquisitions	25,558	37,914
Foreign currency adjustment	(4,463)	9,159
Goodwill net, ending balance	216,464	195,369
Performance Coatings [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Goodwill net, beginning balance	38,236	28,090
Acquisitions	8,171	5,970
Foreign currency adjustment	(2,055)	4,176
Goodwill net, ending balance	44,352	38,236
Color Solutions [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Goodwill net, beginning balance	42,535	40,421
Acquisitions	8,857	328
Foreign currency adjustment	(847)	1,786
Goodwill net, ending balance	50,545	42,535
Performance Colors And Glass [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Goodwill net, beginning balance	114,598	79,785
Acquisitions	8,530	31,616
Foreign currency adjustment	(1,561)	3,197
Goodwill net, ending balance	$ 121,567	$ 114,598

Goodwill And Other Intangible_5

Goodwill And Other Intangible Assets (Schedule Of Impairment Of Goodwill) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Goodwill And Other Intangible Assets [Abstract]
Goodwill, gross	$ 274,931	$ 253,836
Accumulated impairment loss	(58,467)	(58,467)
Goodwill, net	$ 216,464	$ 195,369	$ 148,296

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, 2018	Dec. 31, 2017
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	13.00%	11.00%
Maximum [Member]
Schedule Of Impaired Intangible Assets And Goodwill [Line Items]
Weighted-average cost of capital	14.75%	13.50%

Goodwill And Other Intangible_7

Goodwill And Other Intangible Assets (Summary of Fair Value and Impairment of Goodwill) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2016USD ($)
Goodwill And Other Intangible Assets [Abstract]
Impairments	$ (13,198)

Goodwill And Other Intangible_8

Goodwill And Other Intangible Assets (Details of Amortizable Intangible Assets) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Amortization Of Intangible Assets [Line Items]
Total gross amortizable intangible assets	$ 242,687	$ 234,796
Total accumulated amortization	(74,553)	(64,437)
Amortizable intangible assets, net	168,134	170,359
Patents [Member]
Amortization Of Intangible Assets [Line Items]
Total gross amortizable intangible assets	5,462	5,279
Total accumulated amortization	(5,440)	(5,226)
Land Rights [Member]
Amortization Of Intangible Assets [Line Items]
Total gross amortizable intangible assets	4,773	4,947
Total accumulated amortization	(2,909)	(2,883)
Technology/Know-how And Other [Member]
Amortization Of Intangible Assets [Line Items]
Total gross amortizable intangible assets	132,084	131,070
Total accumulated amortization	(48,898)	(45,214)
Customer Relationships [Member]
Amortization Of Intangible Assets [Line Items]
Total gross amortizable intangible assets	100,368	93,500
Total accumulated amortization	$ (17,306)	$ (11,114)
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_9

Goodwill And Other Intangible Assets (Schedule of Indefinite-Lived Intangible Assets) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Trade Names and Trademarks [Member]
Indefinite-lived Intangible Assets [Line Items]
Indefinite-lived intangible assets	$ 16,819	$ 17,257

Debt And Other Financing (Narra

Debt And Other Financing (Narrative) (Details)

Aug. 29, 2016USD ($)

Jan. 25, 2016USD ($)

Dec. 31, 2018USD ($)

Dec. 31, 2017USD ($)

Dec. 31, 2018EUR (€)

Dec. 31, 2018USD ($)

Apr. 25, 2018USD ($)

Dec. 31, 2017EUR (€)

Dec. 31, 2017USD ($)

Jun. 30, 2017EUR (€)

Jun. 30, 2017USD ($)

Feb. 14, 2017EUR (€)

Feb. 14, 2017USD ($)

Debt Instrument [Line Items]

Loss on extinguishment of debt

$ (3,226,000)

$ (3,905,000)

Long-term debt

$ 821,347,000

$ 735,267,000

Other Financing Arrangements [Member]

Debt Instrument [Line Items]

Maximum available in form of cash or letters of credit

41,400,000

64,500,000

Additional borrowings available

30,300,000

39,400,000

International Receivable Sales Programs [Member]

Debt Instrument [Line Items]

Debt amount issued | €

€ 100,000,000

Maturity date

Dec. 1, 2023

Outstanding principal amount

71,300,000

Pecentage of cash receivable of sold receivable

65.00%

Other receivables

$ 23,000,000

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]

Long-term debt

$ 78,000,000

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] | 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] | 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%

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

Additional borrowings available

$ 495,300,000

Maturity date

Feb. 1, 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. 1, 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. 1, 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. 1, 2024

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

Debt Instrument [Line Items]

Debt facility amount

$ 352,300,000

Debt stated interest rate

5.05%

5.05%

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%

5.19%

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

Debt Instrument [Line Items]

Debt facility amount

$ 233,200,000

Debt stated interest rate

5.05%

5.05%

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%

3.43%

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

Debt Instrument [Line Items]

Debt facility amount

$ 228,300,000

Debt stated interest rate

5.05%

5.05%

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%

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

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

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

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%

Debt And Other Financing (Loans

Debt And Other Financing (Loans Payable And Current Portion of Long-Term Debt) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Short-term Debt [Line Items]
Loans payable and current portion of long-term debt	$ 10,260	$ 25,136
Loans Payable [Member]
Short-term Debt [Line Items]
Loans payable and current portion of long-term debt	50	16,360
Current Portion Of Long-term Debt [Member]
Short-term Debt [Line Items]
Loans payable and current portion of long-term debt	$ 10,210	$ 8,776

Debt And Other Financing (Summa

Debt And Other Financing (Summary Of Long-Term Debt) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Total long-term debt	$ 821,347	$ 735,267
Current portion of long-term debt	(10,210)	(8,776)
Long-term debt, less current portion	811,137	726,491
Unamortized debt issuance costs	4,828
Term Loan Facility, Net Of Unamortized Issuance Costs, Maturing 2024 [Member]
Debt Instrument [Line Items]
Total long-term debt	809,022	645,242
Unamortized debt issuance costs	4,800	7,500
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Total long-term debt		78,000
Capital Lease Obligations [Member]
Debt Instrument [Line Items]
Total long-term debt	3,963	4,913
Other notes [Member]
Debt Instrument [Line Items]
Total long-term debt	$ 8,362	$ 7,112

Debt And Other Financing (Annua

Debt And Other Financing (Annual Maturities Of Long-term Debt) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Debt And Other Financing [Abstract]
2,019	$ 10,575
2,020	9,671
2,021	9,393
2,022	10,203
2,023	9,131
Thereafter	778,077
Total maturities of long-term debt	827,050
Unamortized debt issuance costs on Term loan facility	(4,828)
Imputed interest and executory costs on capitalized lease obligations	(875)
Total long-term debt	$ 821,347	$ 735,267

Debt And Other Financing (Sched

Debt And Other Financing (Schedule Of Trade Accounts Receivable In International Receivable Sales Programs) (Details) $ in Thousands	Dec. 31, 2018USD ($)
Debt And Other Financing [Abstract]
Trade accounts receivable sold to financial institutions	$ 89,894
Cash proceeds from financial institutions	57,316
Trade accounts receivable collected to be remitted	$ 11,552

Financial Instruments (Narrativ

Financial Instruments (Narrative) (Details)	12 Months Ended
	Dec. 31, 2018USD ($)	Dec. 31, 2017USD ($)	Dec. 31, 2016USD ($)	Dec. 31, 2018EUR (€)	Dec. 31, 2018USD ($)	Dec. 31, 2017EUR (€)	Dec. 31, 2017USD ($)	Jun. 30, 2017EUR (€)	Jun. 30, 2017USD ($)
Gain (loss) from the change in fair value of financial instruments	$ 0	$ (2,900,000)	$ 2,700,000
Notional amount					$ 387,200,000		$ 238,500,000
Net Investment Hedge [Member]
Notional amount | €						€ 31,000,000
Interest Rate Swap [Member] | Cash Flow Hedging [Member]
Notional amount					317,600,000
Gain to be reclassified during next 12 months, net					800,000
Interest Rate Swap [Member] | Net Investment Hedge [Member]
Notional amount | €				€ 97,200,000
Cross Currency Swaps [Member] | Cash Flow Hedging [Member]
Notional amount					228,300,000
Gain to be reclassified during next 12 months, net					$ 5,900,000
Secured Term Loan [Member] | Interest Rate Swap [Member]
Debt amount issued									$ 150,000,000
Secured Euro Term Loan [Member] | Interest Rate Swap [Member]
Debt amount issued | €								€ 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, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Financial Instruments And Fair Value Measurements [Line Items]
Cash and cash equivalents, Carrying Amount	$ 104,301	$ 63,551	$ 45,582	$ 58,380
Loans payable, Carrying Amount	(50)	(16,360)
Long-term debt, Carrying Amount	(821,347)	(735,267)
Foreign currency forward contracts, net, Carrying amount	(270)	(469)
Cash and cash equivalents, Fair Value	104,301	63,551
Loans payable, Fair Value	(50)	(16,360)
Foreign currency forward contracts, net, Fair Value	(270)	(469)
Unamortized debt issuance costs	4,828
Cross Currency Swaps [Member]
Financial Instruments And Fair Value Measurements [Line Items]
Cross currency swaps, Carrying Amount	17,104
Cross currency swaps, Fair Value	17,104
Interest Rate Swap [Member]
Financial Instruments And Fair Value Measurements [Line Items]
Interest rate swaps-assets, Carrying Amount		1,616
Interest rate swaps-liabilities, Carrying Amount	(5,244)	(124)
Interest rate swaps-assets, Fair Value		1,616
Interest rate swaps-liabilities, Fair Value	(5,244)	(124)
Revolving Credit Facility [Member]
Financial Instruments And Fair Value Measurements [Line Items]
Long-term debt, Carrying Amount		(78,000)
Long-term debt, Fair Value		(79,295)
Term Loan Facility - Amended Credit Facility [Member]
Financial Instruments And Fair Value Measurements [Line Items]
Long-term debt, Carrying Amount	(809,022)	(645,242)
Long-term debt, Fair Value	(796,796)	(646,979)
Unamortized debt issuance costs	4,800	7,500
Other Long-term Notes Payable [Member]
Financial Instruments And Fair Value Measurements [Line Items]
Long-term debt, Carrying Amount	(8,362)	(7,112)
Long-term debt, Fair Value	(5,258)	(3,973)
Level 1 [Member]
Financial Instruments And Fair Value Measurements [Line Items]
Cash and cash equivalents, Fair Value	104,301	63,551
Loans payable, Fair Value
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
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)	(16,360)
Foreign currency forward contracts, net, Fair Value	(270)	(469)
Level 2 [Member] | Cross Currency Swaps [Member]
Financial Instruments And Fair Value Measurements [Line Items]
Cross currency swaps, Fair Value	17,104
Level 2 [Member] | Interest Rate Swap [Member]
Financial Instruments And Fair Value Measurements [Line Items]
Interest rate swaps-assets, Fair Value		1,616
Interest rate swaps-liabilities, Fair Value	(5,244)	(124)
Level 2 [Member] | Revolving Credit Facility [Member]
Financial Instruments And Fair Value Measurements [Line Items]
Long-term debt, Fair Value		(79,295)
Level 2 [Member] | Term Loan Facility - Amended Credit Facility [Member]
Financial Instruments And Fair Value Measurements [Line Items]
Long-term debt, Fair Value	(796,796)	(646,979)
Level 2 [Member] | Other Long-term Notes Payable [Member]
Financial Instruments And Fair Value Measurements [Line Items]
Long-term debt, Fair Value	(5,258)	$ (3,973)
Level 3 [Member]
Financial Instruments And Fair Value Measurements [Line Items]
Cash and cash equivalents, Fair Value
Loans payable, 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
Level 3 [Member] | Other Long-term Notes Payable [Member]
Financial Instruments And Fair Value Measurements [Line Items]
Long-term debt, Fair Value

Financial Instruments (Schedule

Financial Instruments (Schedule Of (Loss) Gain Recognized In AOCI And The Amount Of (Loss) Gain Reclassified Into Earnings) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Cash Flow Hedging [Member] | Interest Expense [Member]
Amount of (Loss) Gain Reclassified from AOCL into Income	$ 2,650	$ (527)
Cash Flow Hedging [Member] | Foreign Currency Gains (Losses), Net [Member]
Amount of (Loss) Gain Reclassified from AOCL into Income	14,509
Interest Rate Swap [Member] | Cash Flow Hedging [Member] | Interest Expense [Member]
Amount of (Loss) Gain Recognized in AOCL	(4,513)	1,492
Amount of (Loss) Gain Reclassified from AOCL into Income	(966)	$ (527)
Cross Currency Swaps [Member] | Interest Expense [Member]
Amount of (Loss) Gain Recognized in AOCL	7,243
Cross Currency Swaps [Member] | Cash Flow Hedging [Member] | Interest Expense [Member]
Amount of (Loss) Gain Recognized in AOCL	15,901
Amount of (Loss) Gain Reclassified from AOCL into Income	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	$ 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, 2018	Dec. 31, 2017	Dec. 31, 2016
Interest Expense [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain Recognized in Earnings	$ 33,371	$ 27,754
Foreign Currency Gains (Losses), Net [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain Recognized in Earnings	8,187	6,554
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	$ (12)	$ (2,938)	$ (2,714)

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) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Net Investment Hedge [Member] | Foreign Currency Gains (Losses), Net [Member]
Amount of (Loss) Gain Recognized in AOCL		$ (10,972)
Cross Currency Swaps [Member] | Interest Expense [Member]
Amount of (Loss) Gain Recognized in AOCL	$ 7,243
Amount of Gain Recognized in Income of Derivative (Amount Excluded from Effectiveness Testing)	$ 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, 2018	Dec. 31, 2017
Other Current Assets [Member] | Cross Currency Swaps [Member]
Derivatives, Fair Value [Line Items]
Asset derivatives	$ 9,606
Other Current Assets [Member] | Foreign Currency Forward Contracts [Member]
Derivatives, Fair Value [Line Items]
Asset derivatives	626	$ 661
Other Non-Current Assets [Member] | Interest Rate Swap [Member]
Derivatives, Fair Value [Line Items]
Asset derivatives		1,616
Other Non-Current Assets [Member] | Cross Currency Swaps [Member]
Derivatives, Fair Value [Line Items]
Asset derivatives	7,498
Accrued Expenses And Other Current Liabilities [Member] | Interest Rate Swap [Member]
Derivatives, Fair Value [Line Items]
Liability derivatives	(755)	(124)
Accrued Expenses And Other Current Liabilities [Member] | Foreign Currency Forward Contracts [Member]
Derivatives, Fair Value [Line Items]
Liability derivatives	(896)	$ (1,130)
Other Noncurrent Liabilities [Member] | Interest Rate Swap [Member]
Derivatives, Fair Value [Line Items]
Liability derivatives	$ (4,489)

Income Taxes (Narrative) (Detai

Income Taxes (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Taxes [Abstract]
Refundable income taxes	$ 13,500	$ 6,900
Income taxes payable	$ 6,000	$ 8,300
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	21.00%	35.00%	35.00%
U.S. deferred tax reduction		$ 21,500
State operating loss carryforwards	$ 38,800
Foreign operating loss carryforwards	183,200
Tax credit carryforwards	33,031
Deferred tax asset valuation allowance	25,596	32,579
Unrecognized tax benefits that would impact effective tax rate	9,200	9,800	$ 11,000
Expense (benefit) for interest, net of tax, and penalties related to unrecognized tax benefits	400	700	100
Accrued amount for payment of interest, net of tax, and penalties related to unrecognized tax benefits	1,800	3,800	$ 3,100
Anticipated reversal within next 12 months of liabilities for unrecognized tax benefits	1,600
Deferred income taxes provided on undistributed earnings of foreign subsidiaries	1,575	$ 1,163
Undistributed earnings of foreign subsidiaries not indefinitely reinvested	11,200
Undistributed earning of foreign subsidiaries indefinitely reinvested	$ 175,700

Income Taxes (Earnings Before I

Income Taxes (Earnings Before Income Taxe Expense) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Taxes [Abstract]
U.S.	$ 2,233	$ 9,857	$ 7,416
Foreign	101,759	100,661	55,029
Income before income taxes	$ 103,992	$ 110,518	$ 62,445

Income Taxes (Income Tax Expens

Income Taxes (Income Tax Expense From Continuing Operations) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Current:
U.S. federal	$ 483	$ (82)	$ 4,616
Foreign	26,156	29,289	24,675
State and local	127	53	28
Total current	26,766	29,260	29,319
Deferred:
U.S. federal	2,405	24,534	379
Foreign	(5,603)	(1,064)	(11,830)
State and local	(522)	20
Total deferred	(3,720)	23,490	(11,451)
Total income tax expense (benefit)	$ 23,046	$ 52,750	$ 17,868

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, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Taxes [Abstract]
Interest rate swaps	$ (1,529)	$ 547
Postretirement benefit liability adjustments	(16)	18	$ 30
Net investment hedge	954	(4,025)
Stock options exercised			(2,355)
Total income tax (benefit) expense allocated to Ferro Corporation shareholders' equity	$ (591)	$ (3,460)	$ (2,325)

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, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Taxes [Abstract]
U.S. federal statutory income tax rate	21.00%	35.00%	35.00%
Foreign tax rate difference	7.60%	(7.30%)	(8.80%)
Uncertain tax positions, net of tax audit settlements	4.70%	5.10%	2.20%
Non-deductible expenses	2.90%	2.40%	3.40%
Global intangible low-taxed income, net	2.50%
Foreign currency	0.60%	(0.60%)	(1.60%)
State taxes	0.10%	(0.10%)	(0.70%)
Domestic production activities deduction		(0.60%)	(0.20%)
Goodwill dispositions, impairments and amortization	(0.30%)	(1.80%)	8.30%
Notional interest deduction	(0.30%)	(0.50%)	(2.80%)
Foreign derived intangible income deduction	(1.10%)
Other	(3.50%)	(1.50%)	4.80%
Tax rate changes	(2.10%)	19.00%	(0.70%)
Adjustment of valuation allowances	(4.50%)	(0.30%)	(7.40%)
Other tax credits	(5.40%)	(1.10%)	(2.90%)
Effective tax rate	22.20%	47.70%	28.60%

Income Taxes (Components of Def

Income Taxes (Components of Deferred Tax Assets and Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Deferred tax assets:
Foreign operating loss carryforwards	$ 42,551	$ 44,804
Pension and other benefit programs	39,174	36,720
Foreign tax credit carryforwards	17,356	20,054
Accrued liabilities	12,515	14,625
Other credit carryforwards	11,446	10,889
Other	8,605	5,823
State and local operating loss carryforwards	2,272	4,808
Inventories	2,732	2,679
Currency differences	2,566	7,376
Allowance for doubtful accounts	1,576	1,822
Total deferred tax assets	140,793	149,600
Deferred tax liabilities:
Property, plant and equipment and intangibles -- depreciation and amortization	29,648	38,785
Other	2,763	2,339
Unremitted earnings of foreign subsidiaries	1,575	1,163
Total deferred tax liabilities	33,986	42,287
Net deferred tax assets before valuation allowance	106,807	107,313
Valuation allowance	(25,596)	(32,579)
Net deferred tax assets	$ 81,211	$ 74,734

Income Taxes (Expirations of Op

Income Taxes (Expirations of Operating Loss Carryforwards and Tax Credit Carryforwards) (Details) $ in Thousands	Dec. 31, 2018USD ($)
Income Tax And Carryforwards [Line Items]
Operating Loss Carryforwards	$ 221,998
Tax Credit Carryforwards	33,031
Expiring In 2019 [Member]
Income Tax And Carryforwards [Line Items]
Operating Loss Carryforwards	21,072
Tax Credit Carryforwards	6,003
Expiring In 2020-2024 [Member]
Income Tax And Carryforwards [Line Items]
Operating Loss Carryforwards	33,969
Tax Credit Carryforwards	8,140
Expiring In 2025-2029 [Member]
Income Tax And Carryforwards [Line Items]
Operating Loss Carryforwards	16,411
Tax Credit Carryforwards	9,025
Expiring In 2030-2034 [Member]
Income Tax And Carryforwards [Line Items]
Operating Loss Carryforwards	13,112
Tax Credit Carryforwards	4,906
Expiring In 2035-2039 [Member]
Income Tax And Carryforwards [Line Items]
Operating Loss Carryforwards	5,093
Tax Credit Carryforwards	3,953
Expiring In 2040-Indefinitely [Member]
Income Tax And Carryforwards [Line Items]
Operating Loss Carryforwards	132,341
Tax Credit Carryforwards	$ 1,004

Income Taxes (Classification of

Income Taxes (Classification of Net Deferred Income Tax Assets) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Income Taxes [Abstract]
Non-current assets	$ 103,488	$ 108,025
Non-current liabilities	(22,277)	(33,291)
Net deferred tax assets	$ 81,211	$ 74,734

Income Taxes (Activity and Bala

Income Taxes (Activity and Balances of Unrecognized Tax Benefits) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Taxes [Abstract]
Balance at beginning of year	$ 28,470	$ 30,085	$ 34,541
Additions based on tax positions related to the current year	4,041	1,609	1,445
Additions for tax positions of prior years	24	2,057	170
Reductions for tax positions of prior years	(1,710)	(288)	(2,827)
Reductions as a result of expiring statutes of limitations	(420)	(6,284)	(2,718)
Foreign currency adjustments	(786)	1,644	(526)
Settlements with taxing authorities	(4,750)	(353)
Balance at end of year	$ 24,869	$ 28,470	$ 30,085

Contingent Liabilities (Narrati

Contingent Liabilities (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	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	$ 7.7	$ 6.7
Undiscounted remediation liability associated with environmentally contaminated non-operating facility	6.7	8.5
ARGENTINA | Argentina Supreme Court [Member]
Commitments And Contingent Liabilities [Line Items]
Contingent tax liability	3.3	$ 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, 2018USD ($)itemshares	Dec. 31, 2017USD ($)shares	Dec. 31, 2018USD ($)itemshares	Dec. 31, 2017USD ($)shares	Dec. 31, 2016USD ($)
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)	$ 17,900	$ (6,400)
Shares of company common stock | shares	83,000,000	84,000,000	83,000,000	84,000,000
Unrealized (losses) gains			$ (1,000)	$ 2,300
Defined contribution plan vesting period			5 years
Defined contribution retirement plans expense			$ 2,900	5,700	$ 4,200
United States [Member]
Pension Postretirement And Other Retirement Plans [Line Items]
Gains (losses) from returns on plan assets			$ 31,000	$ 20,800	(3,400)
Shares of company common stock | shares	300,000	300,000	300,000	300,000
Market value of shares held of company common stock	$ 4,400	$ 6,700	$ 4,400	$ 6,700
Expected contribution to pension plans	2,800		2,800
Non-U.S. Pension Plans [Member]
Pension Postretirement And Other Retirement Plans [Line Items]
Expected contribution to pension plans	$ 4,500		$ 4,500
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)			$ 16,633	(5,432)	9,127
Actuarial (gain) loss			(14,414)	17,956
Settlements			25	51,124
Pension Plan [Member] | Non-U.S. Pension Plans [Member]
Pension Postretirement And Other Retirement Plans [Line Items]
Mark-to-market actuarial net losses (gains)			3,840	(1,459)	11,180
Actuarial (gain) loss			2,241	(1,381)
Settlements			1,330	387
Postretirement Health Care And Life Insurance Benefit Plans [Member]
Pension Postretirement And Other Retirement Plans [Line Items]
Actuarial (gain) loss			(2,580)	458
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)			$ (2,580)	$ 458	$ (164)

Retirement Benefits (Defined Be

Retirement Benefits (Defined Benefit Pension Plans) (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Net periodic benefit cost:
Mark-to-market actuarial net losses (gains)	$ 17,900	$ (6,400)
Amounts recognized in the balance sheet:
Accrued expenses and other current liabilities	(77,995)	(70,151)	$ (77,995)	$ (70,151)
Postretirement and pension liabilities	(173,046)	(166,680)	(173,046)	(166,680)
United States [Member] | Pension Plan [Member]
Net periodic benefit cost:
Service cost			11	11	$ 16
Interest cost			11,308	14,594	15,552
Expected return on plan assets			(15,982)	(20,111)	(19,735)
Amortization of prior service cost				7	11
Mark-to-market actuarial net losses (gains)			16,633	(5,432)	9,127
Curtailment and settlement effects losses				2,581
Total net periodic benefit cost (credit)			11,970	(8,350)	4,971
Change in benefit obligation:
Benefit obligation at beginning of year			303,170	345,202
Service cost			11	11	16
Interest cost			11,308	14,594	15,552
Settlements			(25)	(51,124)
Benefits paid			(20,165)	(23,469)
Actuarial (gain) loss			(14,414)	17,956
Benefit obligation at end of year	279,885	303,170	279,885	303,170	345,202
Accumulated benefit obligation at end of year	279,885	303,170	279,885	303,170
Fair value of plan assets at beginning of year			239,260	272,549
Actual return on plan assets			(15,065)	40,919
Employer contributions			420	385
Benefits paid			(20,165)	(23,469)
Effect of settlements			(25)	(51,124)
Fair value of plan assets at end of year	204,425	239,260	204,425	239,260	$ 272,549
Amounts recognized in the balance sheet:
Accrued expenses and other current liabilities	(404)	(422)	(404)	(422)
Postretirement and pension liabilities	(75,056)	(63,488)	(75,056)	(63,488)
Funded status	$ (75,460)	$ (63,910)	$ (75,460)	$ (63,910)
Weighted-average assumptions as of December 31:
Discount rate			3.80%	4.40%	4.70%
Discount rate	4.40%	3.80%	4.40%	3.80%
Expected return on plan assets			7.70%	8.20%	8.20%
Pension plans with benefit obligations in excess of plan assets:
Benefit obligations	$ 279,885	$ 303,170	$ 279,885	$ 303,170
Plan assets	204,425	239,260	204,425	239,260
Pension plans with accumulated benefit obligations in excess of plan assets:
Projected benefit obligations	279,885	303,170	279,885	303,170
Accumulated benefit obligations	279,885	303,170	279,885	303,170
Plan assets	204,425	239,260	204,425	239,260
Prior service (cost):
Balance at beginning of year				(7)
Amounts recognized as net periodic benefit costs				7
Exchange rate effects
Balance at end of year					$ (7)
Estimated amounts to be amortized in 2019
Non-U.S. Pension Plans [Member] | Pension Plan [Member]
Net periodic benefit cost:
Service cost			1,714	1,717	1,372
Interest cost			2,551	2,468	3,319
Expected return on plan assets			(862)	(896)	(1,712)
Amortization of prior service cost			39	42	37
Mark-to-market actuarial net losses (gains)			3,840	(1,459)	11,180
Curtailment and settlement effects losses			372	39	688
Special termination benefits			232	52	330
Total net periodic benefit cost (credit)			7,886	1,963	15,214
Change in benefit obligation:
Benefit obligation at beginning of year			117,146	103,490
Service cost			1,714	1,717	1,372
Interest cost			2,551	2,468	3,319
Settlements			(1,330)	(387)
Special termination benefits			232	52
Plan participants' contributions			21	25
Benefits paid			(2,825)	(2,826)
Net transfer in			518	416
Actuarial (gain) loss			2,241	(1,381)
Exchange rate effect			(4,994)	13,572
Benefit obligation at end of year	115,274	117,146	115,274	117,146	103,490
Accumulated benefit obligation at end of year	105,137	112,732	105,137	112,732
Fair value of plan assets at beginning of year			38,270	33,683
Actual return on plan assets			(1,109)	933
Employer contributions			3,185	2,515
Plan participants' contributions			21	25
Benefits paid			(2,825)	(2,826)
Effect of settlements			(1,330)	(387)
Exchange rate effect			(1,682)	4,327
Fair value of plan assets at end of year	34,530	38,270	34,530	38,270	$ 33,683
Amounts recognized in the balance sheet:
Accrued expenses and other current liabilities	(4,174)	(2,354)	(4,174)	(2,354)
Postretirement and pension liabilities	(76,570)	(76,522)	(76,570)	(76,522)
Funded status	$ (80,744)	$ (78,876)	$ (80,744)	$ (78,876)
Weighted-average assumptions as of December 31:
Discount rate			2.35%	2.24%	3.12%
Discount rate	2.61%	2.35%	2.61%	2.35%
Rate of compensation increase			3.18%	3.14%	3.16%
Rate of compensation increase	3.19%	3.18%	3.19%	3.18%
Expected return on plan assets			2.55%	2.54%	3.41%
Pension plans with benefit obligations in excess of plan assets:
Benefit obligations	$ 87,955	$ 87,990	$ 87,955	$ 87,990
Plan assets	7,212	9,114	7,212	9,114
Pension plans with accumulated benefit obligations in excess of plan assets:
Projected benefit obligations	85,262	84,206	85,262	84,206
Accumulated benefit obligations	75,343	73,902	75,343	73,902
Plan assets	4,637	5,464	4,637	5,464
Prior service (cost):
Balance at beginning of year			(261)	(265)
Amounts recognized as net periodic benefit costs			39	42
Exchange rate effects			16	(38)
Balance at end of year	(206)	$ (261)	(206)	$ (261)	$ (265)
Estimated amounts to be amortized in 2019	$ (39)		$ (39)

Retirement Benefits (Fair Value

Retirement Benefits (Fair Value of Pension Plan Assets) (Details) - Pension Plan [Member] - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
United States [Member]
Pension Postretirement And Other Retirement Plans [Line Items]
Total fair value of plan assets	$ 204,425	$ 239,260	$ 272,549
United States [Member] | Investments Measured At Net Asset Value [Member]
Pension Postretirement And Other Retirement Plans [Line Items]
Total fair value of plan assets	12,774	24,080
United States [Member] | Cash And Cash Equivalents [Member]
Pension Postretirement And Other Retirement Plans [Line Items]
Fair value of plan assets		3
United States [Member] | Guaranteed Deposits [Member]
Pension Postretirement And Other Retirement Plans [Line Items]
Fair value of plan assets	1,723	1,802
United States [Member] | Fixed Income Mutual Funds [Member]
Pension Postretirement And Other Retirement Plans [Line Items]
Fair value of plan assets	74,310	74,875
United States [Member] | Commingled Funds [Member]
Pension Postretirement And Other Retirement Plans [Line Items]
Fair value of plan assets	728	936
United States [Member] | Common Stock [Member]
Pension Postretirement And Other Retirement Plans [Line Items]
Fair value of plan assets	4,439	6,678
United States [Member] | Equities: Mutual Funds [Member]
Pension Postretirement And Other Retirement Plans [Line Items]
Fair value of plan assets	109,756	129,887
United States [Member] | Equities: Commingled Funds [Member]
Pension Postretirement And Other Retirement Plans [Line Items]
Fair value of plan assets	695	999
United States [Member] | Total Assets In The Fair Value Hierarchy [Member]
Pension Postretirement And Other Retirement Plans [Line Items]
Fair value of plan assets	191,651	215,180
Non-U.S. Pension Plans [Member]
Pension Postretirement And Other Retirement Plans [Line Items]
Total fair value of plan assets	34,530	38,270	$ 33,683
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
Non-U.S. Pension Plans [Member] | Guaranteed Deposits [Member]
Pension Postretirement And Other Retirement Plans [Line Items]
Total fair value of plan assets	28,094	30,920
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	1,077	1,122
Non-U.S. Pension Plans [Member] | Equities: Mutual Funds [Member]
Pension Postretirement And Other Retirement Plans [Line Items]
Total fair value of plan assets	455	517
Non-U.S. Pension Plans [Member] | Fixed Income: Other [Member]
Pension Postretirement And Other Retirement Plans [Line Items]
Total fair value of plan assets	4,733	5,625
Non-U.S. Pension Plans [Member] | Other Assets [Member]
Pension Postretirement And Other Retirement Plans [Line Items]
Total fair value of plan assets	82	86
Level 1 [Member] | United States [Member]
Pension Postretirement And Other Retirement Plans [Line Items]
Total fair value of plan assets	188,505	211,443
Level 1 [Member] | United States [Member] | Cash And Cash Equivalents [Member]
Pension Postretirement And Other Retirement Plans [Line Items]
Fair value of plan assets		3
Level 1 [Member] | United States [Member] | Fixed Income Mutual Funds [Member]
Pension Postretirement And Other Retirement Plans [Line Items]
Fair value of plan assets	74,310	74,875
Level 1 [Member] | United States [Member] | Common Stock [Member]
Pension Postretirement And Other Retirement Plans [Line Items]
Fair value of plan assets	4,439	6,678
Level 1 [Member] | United States [Member] | Equities: Mutual Funds [Member]
Pension Postretirement And Other Retirement Plans [Line Items]
Fair value of plan assets	109,756	129,887
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	188,505	211,443
Level 1 [Member] | Non-U.S. Pension Plans [Member]
Pension Postretirement And Other Retirement Plans [Line Items]
Total fair value of plan assets	4,253	5,060
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	42
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	1,077	1,122
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	455	517
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	2,607	3,293
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	82	86
Level 2 [Member] | United States [Member]
Pension Postretirement And Other Retirement Plans [Line Items]
Total fair value of plan assets	2,920	3,468
Level 2 [Member] | United States [Member] | Guaranteed Deposits [Member]
Pension Postretirement And Other Retirement Plans [Line Items]
Fair value of plan assets	1,723	1,802
Level 2 [Member] | United States [Member] | Commingled Funds [Member]
Pension Postretirement And Other Retirement Plans [Line Items]
Fair value of plan assets	502	667
Level 2 [Member] | United States [Member] | Equities: Commingled Funds [Member]
Pension Postretirement And Other Retirement Plans [Line Items]
Fair value of plan assets	695	999
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	2,920	3,468
Level 2 [Member] | Non-U.S. Pension Plans [Member]
Pension Postretirement And Other Retirement Plans [Line Items]
Total fair value of plan assets	2,959	3,083
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	744	751
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	2,332
Level 3 [Member] | United States [Member]
Pension Postretirement And Other Retirement Plans [Line Items]
Total fair value of plan assets	226	269
Level 3 [Member] | United States [Member] | Commingled Funds [Member]
Pension Postretirement And Other Retirement Plans [Line Items]
Fair value of plan assets	226	269
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	226	269
Level 3 [Member] | Non-U.S. Pension Plans [Member]
Pension Postretirement And Other Retirement Plans [Line Items]
Total fair value of plan assets	27,318	30,127
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	$ 27,318	$ 30,127

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, 2018	Dec. 31, 2017
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning Balance	$ 30,396	$ 48,960
Sales	(487)	(465)
Gains (losses) included in earnings	(1,003)	2,252
Transfers		(24,080)
Exchange rate effect	(1,362)	3,729
Ending Balance	27,544	30,396
Guaranteed Deposits [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning Balance	30,127	26,332
Sales	(487)	(465)
Gains (losses) included in earnings	(960)	531
Transfers
Exchange rate effect	(1,362)	3,729
Ending Balance	27,318	30,127
Real Estate [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning Balance		22,257
Sales
Gains (losses) included in earnings		1,823
Transfers		(24,080)
Exchange rate effect
Ending Balance
Commingled Funds [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning Balance	269	371
Sales
Gains (losses) included in earnings	(43)	(102)
Transfers
Exchange rate effect
Ending Balance	$ 226	$ 269

Retirement Benefits (Future Pen

Retirement Benefits (Future Pension Benefit Payments) (Details) - Pension Plan [Member] $ in Thousands	Dec. 31, 2018USD ($)
United States [Member]
Pension Postretirement And Other Retirement Plans [Line Items]
2,019	$ 19,290
2,020	19,376
2,021	19,577
2,022	19,779
2,023	19,708
2024-2028	96,668
Non-U.S. Pension Plans [Member]
Pension Postretirement And Other Retirement Plans [Line Items]
2,019	7,825
2,020	4,268
2,021	4,404
2,022	5,710
2,023	4,360
2024-2028	$ 25,969

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, 2018	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Net periodic benefit cost:
Mark-to-market actuarial net losses (gains)	$ 17,900	$ (6,400)
Change in benefit obligation:
Mark-to-market actuarial net losses (gains)	17,900	(6,400)
Amounts recognized in the balance sheet:
Accrued expenses and other current liabilities	(77,995)	(70,151)	$ (77,995)	$ (70,151)
Postretirement and pension liabilities	(173,046)	(166,680)	(173,046)	(166,680)
Postretirement Health Care And Life Insurance Benefit Plans [Member]
Net periodic benefit cost:
Interest cost			732	843
Change in benefit obligation:
Benefit obligation at beginning of year			20,725	21,056
Interest cost			732	843
Benefits paid			(1,679)	(1,632)
Actuarial (gain) loss			2,580	(458)
Benefit obligation at end of year	17,198	20,725	17,198	20,725	$ 21,056
Fair value of plan assets at beginning of year
Employer contributions			1,679	1,632
Benefits paid			(1,679)	(1,632)
Fair value of plan assets at end of year
Amounts recognized in the balance sheet:
Accrued expenses and other current liabilities	(1,966)	(2,132)	(1,966)	(2,132)
Postretirement and pension liabilities	(15,232)	(18,593)	(15,232)	(18,593)
Funded status	$ (17,198)	$ (20,725)	$ (17,198)	$ (20,725)
Weighted-average assumptions as of December 31:
Discount rate	4.30%	3.70%	4.30%	3.70%
Current trend rate for health care costs	6.30%	6.40%	6.30%	6.40%
Ultimate trend rate for health care costs	4.50%	4.50%	4.50%	4.50%
Year that ultimate trend rate is reached			2,036	2,036
Postretirement Health Care And Life Insurance Benefit Plans [Member] | United States [Member]
Net periodic benefit cost:
Interest cost			$ 732	$ 843	944
Mark-to-market actuarial net losses (gains)			(2,580)	458	(164)
Total net periodic benefit cost (credit)			(1,848)	1,301	780
One-percentage-point change in the assumed health care cost trend rates
Effect on total of service and interest cost components, Percentage Point Increase			44
Effect on total of service and interest cost components, Percentage Point Decrease			(38)
Effect on postretirement benefit obligation, Percentage Point Increase			894
Effect on postretirement benefit obligation, Percentage Point Decrease			(789)
Change in benefit obligation:
Interest cost			732	843	944
Mark-to-market actuarial net losses (gains)			(2,580)	458	(164)
Total net periodic benefit (income) cost			$ (1,848)	$ 1,301	$ 780
Weighted-average assumptions as of December 31:
Discount rate			3.70%	4.20%	4.50%
Current trend rate for health care costs			6.40%	6.50%	6.60%
Ultimate trend rate for health care costs			4.50%	4.50%	4.50%
Year that ultimate trend rate is reached			2,036	2,036	2,036

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, 2018USD ($)
Pension Postretirement And Other Retirement Plans [Line Items]
Before Medicare Subsidy 2019	$ 1,968
Before Medicare Subsidy 2020	1,881
Before Medicare Subsidy 2021	1,796
Before Medicare Subsidy 2022	1,704
Before Medicare Subsidy 2023	1,615
Before Medicare Subsidy 2024-2028	6,689
After Medicare Subsidy, 2019	1,758
After Medicare Subsidy, 2020	1,681
After Medicare Subsidy, 2021	1,608
After Medicare Subsidy, 2022	1,528
After Medicare Subsidy, 2023	1,450
After Medicare Subsidy, 2024-2028	$ 6,038

Stock-Based Compensation (Narra

Stock-Based Compensation (Narrative) (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
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	$ 8.91	$ 7.29	$ 4.94
Recognized stock-based compensation expense	$ 1,560	$ 1,588	$ 1,388
Unearned compensation cost related to the unvested portion of all stock-based awards	$ 644	$ 621	$ 513
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	244,062
Maximum payout percentage	200.00%
Weighted-average grant-date fair value	$ 22.92	$ 14.89	$ 10.07
Recognized stock-based compensation expense	$ 4,156	$ 6,881	$ 3,437
Unearned compensation cost related to the unvested portion of all stock-based awards	$ 3,670	$ 3,801	$ 3,733
Performance Share Units Associated With 2018 Grants [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance shares outstanding	100,000
Performance Share Units Associated With 2017 Grants [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance shares outstanding	200,000
Restricted Stock Units[Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of share based compensation units granted	100,000	200,000	300,000
Restricted stock unit vesting period	3 years
Recognized stock-based compensation expense	$ 2,100	$ 2,500	$ 1,700
Unearned compensation cost related to the unvested portion of all stock-based awards	$ 3,000	$ 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	$ 1,200	$ 1,600

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, 2018	Dec. 31, 2017	Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average grant-date fair value	$ 8.91	$ 7.29	$ 4.94
Expected life, in years	5 years 4 months 24 days	6 years	6 years
Risk-free interest rate	2.70%
Risk-free interest rate, minimum		1.90%	1.40%
Risk-free interest rate, maximum		2.30%	1.60%
Expected volatility, minimum		48.00%	52.00%
Expected volatility, maximum		51.50%	53.60%
Expected volatility	39.70%
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, 2018USD ($)$ / sharesshares
Stock Options [Member]
Schedule Of Performance Share Units Activity [Line Items]
Number of Options, Outstanding at Beginning	1,567,269
Number of Options, Granted	150,300
Number of Options, Exercised	(102,880)
Number of Options, Forfeited or expired	(1,000)
Number of Options, Outstanding at Ending	1,613,689
Number of Options, Exercisable, Ending Balance	1,230,261
Number of Options, Vested or expected to vest, Ending Balance	1,613,689
Weighted-Average Exercise Price, Outstanding at Beginning | $ / shares	$ 10.08
Weighted-Average Exercise Price, Granted | $ / shares	22.01
Weighted-Average Exercise Price, Exercised | $ / shares	7.43
Weighted-Average Exercise Price, Forfeited or expired | $ / shares	17.26
Weighted-Average Exercise Price, Outstanding at Ending | $ / shares	11.36
Weighted-Average Exercise Price, Exercisable, Ending Balance | $ / shares	9.87
Weighted-Average Exercise Price, Vested or expected to vest, Ending Balance | $ / shares	$ 11.36
Weighted-Average Remaining Contractual Term, Outstanding, Ending Balance	5 years 6 months
Weighted-Average Remaining Contractual Term, Exercisable, Ending Balance	4 years 7 months 21 days
Weighted-Average Remaining Contractual Term, Vested or expected to vest, Ending Balance	5 years 6 months
Aggregate Intrinsic Value, Outstanding, Ending Balance | $	$ 7,929
Aggregate Intrinsic Value, Exercisable, Ending Balance | $	7,157
Aggregate Intrinsic Value, Vested or expected to vest, Ending Balance | $	$ 7,929
Performance Share Units [Member]
Schedule Of Performance Share Units Activity [Line Items]
Number of Units, Outstanding at Beginning	621,490
Number of Units, Granted	244,062
Number of Units, Earned	(321,382)
Number of Units, Forfeited or expired	(5,970)
Number of Units, Outstanding at Ending	538,200
Number of Units, Vested or expected to vest, Ending Balance	538,200
Weighted-Average Remaining Contractual Term, Outstanding, Ending Balance	8 months 12 days
Weighted- Average Remaining Contractual Term, Vested or expected to vest, Ending Balance	8 months 12 days

Stock-Based Compensation (Infor

Stock-Based Compensation (Information Related to Stock Options Exercised) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Stock-Based Compensation [Abstract]
Proceeds from the exercise of stock options	$ 764	$ 4,526	$ 1,140
Intrinsic value of stock options exercised	1,612	2,898	1,496
Income tax benefit related to stock options exercised	$ 338	$ 1,014	$ 524

Stock-Based Compensation (Sum_2

Stock-Based Compensation (Summary of Stock-Based Compensation Expense) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Stock Options [Member]
Schedule Of Share Based Compensation Arrangements [Line Items]
Compensation expense recorded in selling, general and administrative expenses	$ 1,560	$ 1,588	$ 1,388
Deferred income tax benefits related to compensation expense	328	333	486
Total fair value of stock options vested	1,418	1,388	1,757
Unrecognized compensation cost	$ 644	$ 621	$ 513
Expected weighted-average recognition period for unrecognized compensation, in years	2 years 8 months 12 days	2 years	2 years 1 month 6 days
Performance Share Units [Member]
Schedule Of Share Based Compensation Arrangements [Line Items]
Compensation expense recorded in selling, general and administrative expenses	$ 4,156	$ 6,881	$ 3,437
Deferred income tax benefits related to compensation expense	873	1,445	1,203
Unrecognized compensation cost	$ 3,670	$ 3,801	$ 3,733
Expected weighted-average recognition period for unrecognized compensation, in years	1 year 4 months 24 days	1 year 4 months 24 days	2 years

Restructuring And Cost Reduct_3

Restructuring And Cost Reduction Programs (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Restructuring And Cost Reduction Programs [Abstract]
Restructuring charges	$ 13,295	$ 9,843	$ 2,709

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, 2018	Dec. 31, 2017	Dec. 31, 2016
Restructuring Cost And Reserve [Line Items]
Total expected restructuring charges	$ 91,972
Restructuring charges	13,295	$ 9,843	$ 2,709
Cumulative restructuring charges incurred	75,474
Global Cost Reduction Program [Member]
Restructuring Cost And Reserve [Line Items]
Total expected restructuring charges	91,972
Restructuring charges	13,295	9,843	2,709
Cumulative restructuring charges incurred	75,474
Employee Severance [Member]
Restructuring Cost And Reserve [Line Items]
Total expected restructuring charges	53,861
Restructuring charges	5,794	5,167	1,353
Cumulative restructuring charges incurred	40,818
Employee Severance [Member] | Global Cost Reduction Program [Member]
Restructuring Cost And Reserve [Line Items]
Total expected restructuring charges	53,861
Restructuring charges	5,794	5,167	1,353
Cumulative restructuring charges incurred	40,818
Other Costs [Member]
Restructuring Cost And Reserve [Line Items]
Total expected restructuring charges	36,935
Restructuring charges	7,501	3,500	1,356
Cumulative restructuring charges incurred	33,480
Other Costs [Member] | Global Cost Reduction Program [Member]
Restructuring Cost And Reserve [Line Items]
Total expected restructuring charges	36,935
Restructuring charges	7,501	3,500	1,356
Cumulative restructuring charges incurred	33,480
Asset Impairment [Member]
Restructuring Cost And Reserve [Line Items]
Total expected restructuring charges	1,176
Restructuring charges		1,176
Cumulative restructuring charges incurred	1,176
Asset Impairment [Member] | Global Cost Reduction Program [Member]
Restructuring Cost And Reserve [Line Items]
Total expected restructuring charges	1,176
Restructuring charges		$ 1,176
Cumulative restructuring charges incurred	$ 1,176

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, 2018	Dec. 31, 2017	Dec. 31, 2016
Restructuring Cost And Reserve [Line Items]
Total Expected Charges	$ 91,972
Restructuring charges incurred	13,295	$ 9,843	$ 2,709
Cumulative charges to date	75,474
Performance Coatings [Member]
Restructuring Cost And Reserve [Line Items]
Total Expected Charges	15,343
Restructuring charges incurred	274	2,948	192
Cumulative charges to date	7,326
Performance Colors And Glass [Member]
Restructuring Cost And Reserve [Line Items]
Total Expected Charges	25,546
Restructuring charges incurred	23	971	205
Cumulative charges to date	20,055
Color Solutions [Member]
Restructuring Cost And Reserve [Line Items]
Total Expected Charges	7,327
Restructuring charges incurred	148	1,250	630
Cumulative charges to date	4,337
Segment Total [Member]
Restructuring Cost And Reserve [Line Items]
Total Expected Charges	48,216
Restructuring charges incurred	445	5,169	1,027
Cumulative charges to date	31,718
Corporate Restructuring Charges [Member]
Restructuring Cost And Reserve [Line Items]
Total Expected Charges	43,756
Restructuring charges incurred	12,850	$ 4,674	$ 1,682
Cumulative charges to date	$ 43,756

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, 2018	Dec. 31, 2017	Dec. 31, 2016
Restructuring Cost and Reserve [Line Items]
Beginning balance	$ 3,520	$ 1,728	$ 2,770
Restructuring charges	13,295	9,843	2,709
Cash payments	(9,211)	(3,816)	(2,723)
Non-cash items	(5,165)	(4,235)	(1,028)
Ending balance	2,439	3,520	1,728
Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Beginning balance	2,286	239	693
Restructuring charges	5,794	5,167	1,353
Cash payments	(6,749)	(3,316)	(1,634)
Non-cash items	(180)		(173)
Non-cash items		196
Ending balance	1,151	2,286	239
Other Costs [Member]
Restructuring Cost and Reserve [Line Items]
Beginning balance	1,234	1,489	2,077
Restructuring charges	7,501	3,500	1,356
Cash payments	(2,462)	(500)	(1,089)
Non-cash items	(4,985)	(3,255)	(855)
Ending balance	1,288	1,234	1,489
Asset Impairment [Member]
Restructuring Cost and Reserve [Line Items]
Beginning balance
Restructuring charges		1,176
Cash payments
Non-cash items		(1,176)
Ending balance

Leases (Narrative) (Details)

Leases (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Leases [Abstract]
Rent expense for all operating leases	$ 15	$ 12.2	$ 9.8

Leases (Assets Held under Capit

Leases (Assets Held under Capital Leases and Included in Property, Plant and Equipment) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Capital Leased Assets [Line Items]
Gross amounts capitalized	$ 8,221	$ 8,491
Accumulated amortization	(6,036)	(5,610)
Net assets under capital leases	2,185	2,881
Buildings [Member]
Capital Leased Assets [Line Items]
Gross amounts capitalized	4,705	4,781
Accumulated amortization	(3,238)	(3,190)
Equipment [Member]
Capital Leased Assets [Line Items]
Gross amounts capitalized	3,516	3,710
Accumulated amortization	$ (2,798)	$ (2,420)

Leases (Future Minimum Lease Pa

Leases (Future Minimum Lease Payments under All Non-Cancelable Leases) (Details) $ in Thousands	Dec. 31, 2018USD ($)
Leases [Abstract]
2019, Capital Leases	$ 1,048
2020, Capital Leases	755
2021, Capital Leases	477
2022, Capital Leases	1,287
2023, Capital Leases	279
Thereafter, Capital Leases	992
Net minimum lease payments, Capital Leases	4,838
Less amount representing imputed interest and executory costs	875
Present value of net minimum lease payments	3,963
Less current portion	679
Long-term obligations at end of period	3,284
2019, Operating Leases	11,419
2020, Operating Leases	7,314
2021, Operating Leases	5,302
2022, Operating Leases	3,301
2023, Operating Leases	1,971
Thereafter, Operating Leases	2,401
Net minimum lease payments, Operating Leases	$ 31,708

Miscellaneous Expense (Income_3

Miscellaneous Expense (Income), Net (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Jun. 29, 2018
Pension expense (income)	$ 16,281	$ (6,814)	$ 19,577
Gain on change of control	(2,586)	(2,561)
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	500	900	1,100
(Gain) loss on sale of assets from closed site	(440)	$ 722	$ (3,891)
PT Ferro Materials Utama ("FMU") [Member]
Business acquisition, percentage of voting interests acquired				66.00%
Gain on change of control	$ (2,600)
PT Ferro Materials Utama ("FMU") [Member]
Total ownership				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, 2018	Dec. 31, 2017	Dec. 31, 2016
Miscellaneous Expense (Income), Net [Abstract]
Pension expense (income)	$ 16,281	$ (6,814)	$ 19,577
Argentina export tax matter	507	(3,549)	1,128
Gain on change of control	(2,586)	(2,561)
Modification of debt	1,046
Dividends/royalty from affiliates, net	(720)	(993)	(1,245)
Equity method investment (income) loss	(55)	261	(260)
(Gain) loss on sale of assets	(440)	722	(3,891)
Contingent consideration (adjustment) payment	(1,971)	1,721
Bank fees	2,648	2,229	1,855
Other, net	1,260	548	(247)
Total Miscellaneous expense (income), net	$ 15,970	$ (8,436)	$ 16,917

Earnings Per Share (Narrative)

Earnings Per Share (Narrative) (Details) - shares shares in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Earnings Per Share [Abstract]
Anti-dilutive securities excluded from computation of earnings per share	1.7	1.6	1.7

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, 2018	Dec. 31, 2017	Dec. 31, 2016
Basic earnings (loss) per share computation:
Net income (loss) attributable to Ferro Corporation common shareholders	$ 80,093	$ 57,054	$ (20,817)
Adjustment for loss from discontinued operations			64,464
Total	$ 80,093	$ 57,054	$ 43,647
Weighted-average common shares outstanding	83,940	83,713	83,298
Basic earnings per share from continuing operations attributable to Ferro Corporation common shareholders	$ 0.95	$ 0.68	$ 0.52
Diluted earnings (loss) per share computation:
Net income (loss) attributable to Ferro Corporation common shareholders	$ 80,093	$ 57,054	$ (20,817)
Adjustment for loss from discontinued operations			64,464
Total	$ 80,093	$ 57,054	$ 43,647
Weighted-average common shares outstanding	83,940	83,713	83,298
Assumed exercise of stock options	772	762	549
Assumed satisfaction of deferred stock unit conditions			36
Assumed satisfaction of restricted stock unit conditions	301	351	544
Assumed satisfaction of performance stock unit conditions	72	330	483
Weighted-average diluted shares outstanding	85,085	85,156	84,910
Diluted earnings per share from continuing operations attributable to Ferro Corporation common shareholders	$ 0.94	$ 0.67	$ 0.51

Share Repurchase Program (Detai

Share Repurchase Program (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Oct. 31, 2018
Share Repurchase Program [Abstract]
Stock repurchase program, additional authorized amount	$ 100,000			$ 50,000
Purchase of treasury stock, shares	1,470,791	0	1,175,437
Treasury stock acquired, average cost per share	$ 19.59		$ 9.72
Purchase of treasury stock	$ 28,807		$ 11,429
Stock repurchase program, remaining authorized amount	$ 71,200

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, 2018	Dec. 31, 2017	Dec. 31, 2016
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balances	$ 344,814
Ending Balances	376,631	$ 344,814
Accumulated Other Comprehensive (Loss) Income [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balances	(75,468)	(106,643)	$ (61,318)
Other comprehensive income (loss) before reclassifications, before tax	(13,270)	28,200	(46,770)
Reclassification to earnings: Cash flow hedge loss, before tax	(17,159)	(527)
Reclassification to earnings: Postretirement benefit liabilities (loss) gain, before tax	(55)	42	360
Reclassification to earnings: Foreign currency translation adjustment, before tax			1,115
Current period other comprehensive income (loss), before tax	(30,484)	27,715	(45,295)
Tax effect	(591)	(3,460)	30
Current period other comprehensive income (loss), net of tax	(29,893)	31,175	(45,325)
Ending Balances	(105,361)	(75,468)	(106,643)
Postretirement Benefit Liability Adjustments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balances	1,165	1,141	811
Other comprehensive income (loss) before reclassifications, before tax
Reclassification to earnings: Cash flow hedge loss, before tax
Reclassification to earnings: Postretirement benefit liabilities (loss) gain, before tax	(55)	42	360
Reclassification to earnings: Foreign currency translation adjustment, before tax
Current period other comprehensive income (loss), before tax	(55)	42	360
Tax effect	(16)	18	30
Current period other comprehensive income (loss), net of tax	(39)	24	330
Ending Balances	1,126	1,165	1,141
Translation Adjustments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balances	(77,578)	(107,784)	(62,129)
Other comprehensive income (loss) before reclassifications, before tax	(24,658)	26,181	(46,770)
Reclassification to earnings: Cash flow hedge loss, before tax
Reclassification to earnings: Postretirement benefit liabilities (loss) gain, before tax
Reclassification to earnings: Foreign currency translation adjustment, before tax			1,115
Current period other comprehensive income (loss), before tax	(24,658)	26,181	(45,655)
Tax effect	954	(4,025)
Current period other comprehensive income (loss), net of tax	(25,612)	30,206	(45,655)
Ending Balances	(103,190)	(77,578)	(107,784)
Net Gain On Cash Flow Hedges [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balances	945
Other comprehensive income (loss) before reclassifications, before tax	11,388	2,019
Reclassification to earnings: Cash flow hedge loss, before tax	(17,159)	(527)
Reclassification to earnings: Postretirement benefit liabilities (loss) gain, before tax
Reclassification to earnings: Foreign currency translation adjustment, before tax
Current period other comprehensive income (loss), before tax	(5,771)	1,492
Tax effect	(1,529)	547
Current period other comprehensive income (loss), net of tax	(4,242)	945
Ending Balances	$ (3,297)	$ 945
Discontinued Operations Disposed Of By Sale [Member] | Europe-based Polymer Additives [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Assets held for sale, impairment charge			$ 1,100

Reporting For Segments (Narrati

Reporting For Segments (Narrative) (Details)	12 Months Ended
	Dec. 31, 2018country
Reporting For Segments [Abstract]
Number of countries other than the U.S. and Spain representing greater than 10% of net sales	0
Number of countries other than the U.S. and Spain representing greater than 10% of long-lived assets	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, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Segment Reporting Information [Line Items]
Net sales	$ 395,474	$ 395,163	$ 416,239	$ 405,532	$ 377,543	$ 350,012	$ 348,632	$ 320,555	$ 1,612,408	$ 1,396,742	$ 1,145,292
Performance Coatings [Member]
Segment Reporting Information [Line Items]
Net sales									733,926	594,029	526,981
Performance Colors And Glass [Member]
Segment Reporting Information [Line Items]
Net sales									487,455	444,653	371,464
Color Solutions [Member]
Segment Reporting Information [Line Items]
Net sales									$ 391,027	$ 358,060	$ 246,847

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, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total gross profit	$ 105,115	$ 105,487	$ 126,645	$ 118,686	$ 105,469	$ 103,616	$ 108,342	$ 98,794	$ 455,933	$ 416,221	$ 356,378
Selling, general and administrative expenses									278,566	265,418	227,286
Restructuring and impairment charges	$ 2,900	$ 2,600	$ 3,800	$ 4,100	$ 3,700	$ 1,500	$ 3,200	$ 3,000	13,295	11,409	15,907
Other expense, net									60,080	28,876	50,740
Income before income taxes									103,992	110,518	62,445
Operating Segments [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Other cost of sales									(2,073)	(814)	(1,539)
Total gross profit									455,933	416,221	356,378
Performance Coatings [Member] | Operating Segments [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total gross profit									165,708	145,797	139,454
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									167,446	157,544	133,997
Color Solutions [Member] | Operating Segments [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total gross profit									$ 124,852	$ 113,694	$ 84,466

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, 2018	Dec. 31, 2017	Dec. 31, 2016
Segment Reporting Information [Line Items]
Total expenditures for long lived assets	$ 80,619	$ 50,552	$ 24,025
Discontinued Operations [Member]
Segment Reporting Information [Line Items]
Total expenditures for long lived assets			900
Corporate [Member]
Segment Reporting Information [Line Items]
Total expenditures for long lived assets	5,715	1,088	2,896
Operating Segments [Member]
Segment Reporting Information [Line Items]
Total expenditures for long lived assets	74,904	49,464	21,129
Operating Segments [Member] | Performance Coatings [Member]
Segment Reporting Information [Line Items]
Total expenditures for long lived assets	41,106	19,734	9,139
Operating Segments [Member] | Performance Colors And Glass [Member]
Segment Reporting Information [Line Items]
Total expenditures for long lived assets	8,858	9,374	7,123
Operating Segments [Member] | Color Solutions [Member]
Segment Reporting Information [Line Items]
Total expenditures for long lived assets	$ 24,940	$ 20,356	$ 4,867

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, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Segment Reporting Information [Line Items]
Total net sales	$ 395,474	$ 395,163	$ 416,239	$ 405,532	$ 377,543	$ 350,012	$ 348,632	$ 320,555	$ 1,612,408	$ 1,396,742	$ 1,145,292
United States [Member]
Segment Reporting Information [Line Items]
Total net sales									379,914	356,482	300,187
Spain [Member]
Segment Reporting Information [Line Items]
Total net sales									305,049	214,732	188,972
Other International [Member]
Segment Reporting Information [Line Items]
Total net sales									$ 927,445	$ 825,528	$ 656,133

Reporting For Segments (Summa_3

Reporting For Segments (Summary of Long-Lived Assets by Geographic Region) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Revenues from External Customers and Long-Lived Assets [Line Items]
Total long-lived assets	$ 381,341	$ 321,742
Spain [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total long-lived assets	78,094	76,142
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total long-lived assets	56,263	44,956
Mexico [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total long-lived assets	39,019	16,989
Other International [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total long-lived assets	$ 207,965	$ 183,655

Unconsolidated Affiliates Acc_3

Unconsolidated Affiliates Accounted For Under the Equity Method (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Unconsolidated Affiliates Accounted For Under the Equity Method [Abstract]
Investment income from equity-method investments	$ 55	$ (261)	$ 260
Equity-method investments	$ 8,200	$ 7,600

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, 2018	Dec. 31, 2017	Dec. 31, 2016
Unconsolidated Affiliates Accounted For Under the Equity Method [Abstract]
Net sales	$ 18,950	$ 33,851	$ 42,555
Gross profit	3,343	5,655	4,842
Income (loss) from continuing operations	746	(224)	694
Net income (loss)	$ 596	$ (220)	$ 236

Unconsolidated Affiliates Acc_5

Unconsolidated Affiliates Accounted For Under the Equity Method (Summarized Balance Sheet) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Unconsolidated Affiliates Accounted For Under the Equity Method [Abstract]
Current assets	$ 17,305	$ 19,908
Non-current assets	3,356	10,834
Current liabilities	(3,832)	(13,207)
Non-current liabilities	$ (339)	$ (467)

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, 2018	Dec. 31, 2017	Dec. 31, 2016
Unconsolidated Affiliates Accounted For Under the Equity Method [Abstract]
Sales	$ 4,898	$ 5,378	$ 4,589
Purchases	15	2,006	758
Dividends and interest received	415	920	268
Commission and royalties received	$ 305	130	1,003
Commissions and royalties paid		$ 57	$ 26

Quarterly Data (Narrative) (Det

Quarterly Data (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Quarterly Data [Abstract]
Restructuring and impairment charges	$ 2,900	$ 2,600	$ 3,800	$ 4,100	$ 3,700	$ 1,500	$ 3,200	$ 3,000	$ 13,295	$ 11,409	$ 15,907
Mark-to-market net losses (gains)	$ (17,900)				$ 6,400

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, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Quarterly Data [Abstract]
Net sales	$ 395,474	$ 395,163	$ 416,239	$ 405,532	$ 377,543	$ 350,012	$ 348,632	$ 320,555	$ 1,612,408	$ 1,396,742	$ 1,145,292
Gross profit	105,115	105,487	126,645	118,686	105,469	103,616	108,342	98,794	455,933	416,221	356,378
Net income (loss)	11,344	16,143	29,861	23,598	(8,547)	22,965	21,229	22,121	80,946	57,768	(19,887)
Net Income (Loss) Attributable to Ferro Corporation	$ 10,976	$ 16,058	$ 29,668	$ 23,391	$ (8,686)	$ 22,817	$ 21,025	$ 21,898	$ 80,093	$ 57,054	$ (20,817)
Earnings (Loss) Attributable to Ferro Corporation Common Shareholders Per Common Share, Basic	$ 0.13	$ 0.19	$ 0.35	$ 0.28	$ (0.10)	$ 0.27	$ 0.25	$ 0.26	$ 0.95	$ 0.68	$ (0.25)
Earnings (Loss) Attributable to Ferro Corporation Common Shareholders Per Common Share, Diluted	$ 0.13	$ 0.19	$ 0.35	$ 0.27	$ (0.10)	$ 0.27	$ 0.25	$ 0.26	$ 0.94	$ 0.67	$ (0.25)

Schedule II - Valuation And Q_2

Schedule II - Valuation And Qualifying Accounts And Reserves (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Valuation and Qualifying Accounts Disclosure [Line Items]
Valuation allowance release	$ 1,700	$ 800	$ 6,800
Allowance for Possible Losses on Collection of Accounts Receivable [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period	7,821	8,166	7,784
Additions Charged (Reductions Credited) to Costs and Expenses	681	44	1,383
Deductions	(2,642)	(1,253)	(820)
Adjustment for Differences in Exchange Rates	(356)	864	(181)
Balance at End of Period	5,504	7,821	8,166
Valuation Allowance on Net Deferred Tax Assets [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period	32,579	37,354	55,043
Deductions	(5,617)	(5,648)	(16,686)
Adjustment for Differences in Exchange Rates	(1,366)	873	(1,003)
Balance at End of Period	$ 25,596	$ 32,579	$ 37,354