Ampco-Pittsburgh (AP) 10-K 16 Mar 17 2016 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Mar. 10, 2017	Jun. 30, 2016
Document And Entity Information [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2016
Document Fiscal Year Focus	2,016
Document Fiscal Period Focus	FY
Trading Symbol	AP
Entity Registrant Name	AMPCO PITTSBURGH CORP
Entity Central Index Key	6,176
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	No
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		12,270,621
Entity Public Float			$ 141

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 38,579	$ 95,122
Receivables, less allowance for doubtful accounts of $2,228 in 2016 and $983 in 2015	72,233	44,877
Inventories	83,579	59,734
Insurance receivable - asbestos	13,000	17,000
Other current assets	14,073	2,949
Total current assets	221,464	219,682
Property, plant and equipment, net	214,408	146,913
Insurance receivable - asbestos	102,945	108,423
Deferred income tax assets	4,824	20,569
Investments in joint ventures	2,019	3,097
Intangible assets - net	11,601	1,193
Other noncurrent assets	8,628	6,279
Total assets	565,889	506,156
Current liabilities:
Accounts payable	37,104	13,959
Accrued payrolls and employee benefits	20,166	9,183
Debt - current portion	26,825	13,311
Asbestos liability - current portion	18,000	21,000
Other current liabilities	42,197	23,880
Total current liabilities	144,292	81,333
Employee benefit obligations	91,947	63,702
Asbestos liability	153,181	148,849
Deferred income tax liabilities	591	0
Long-term debt	25,389	0
Other noncurrent liabilities	655	849
Total liabilities	416,055	294,733
Commitments and contingent liabilities (Note 10)
Shareholders' equity:
Common stock - par value $1; authorized 20,000 shares; issued and outstanding 12,271 shares in 2016 and 10,440 shares in 2015	12,271	10,440
Additional paid-in capital	151,089	128,840
Retained earnings	45,443	129,742
Accumulated other comprehensive loss	(60,885)	(57,599)
Total Ampco-Pittsburgh shareholders' equity	147,918	211,423
Noncontrolling interest	1,916	0
Total shareholders' equity	149,834	211,423
Total liabilities and shareholders' equity	$ 565,889	$ 506,156

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Statement of Financial Position [Abstract]
Receivables, allowance for doubtful accounts	$ 2,228	$ 983
Common stock, par value	$ 1	$ 1
Common stock, shares authorized	20,000,000	20,000,000
Common stock, shares issued	12,271,000	10,440,000
Common stock, shares outstanding	12,271,000	10,440,000

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Statement [Abstract]
Net sales	$ 331,866	$ 238,480	$ 272,858
Operating costs and expenses:
Costs of products sold (excluding depreciation and amortization)	276,496	196,091	218,597
Selling and administrative	58,175	39,510	37,380
Depreciation and amortization	20,463	11,787	11,818
Charge (credit) for asbestos litigation	4,565	(14,333)	4,487
Charges for impairment	26,676	0	0
Loss on disposition of assets	21	378	496
Total operating expenses	386,396	233,433	272,778
(Loss) income from operations	(54,530)	5,047	80
Other income (expense):
Investment-related income	481	174	171
Interest expense	(2,397)	(226)	(236)
Other - net	(1,074)	(475)	(907)
Total other income (expense)	(2,990)	(527)	(972)
(Loss) income before income taxes and equity gains (losses) in Chinese joint venture	(57,520)	4,520	(892)
Income tax (provision) benefit	(22,712)	(2,633)	766
Equity income (losses) in Chinese joint venture, including gain on sale (Note 3)	423	(514)	(1,061)
Net (loss) income	(79,809)	1,373	(1,187)
Less: Net income attributable to noncontrolling interest	11	0	0
Net (loss) income attributable to Ampco-Pittsburgh	$ (79,820)	$ 1,373	$ (1,187)
Net (loss) income per common share attributable to Ampco-Pittsburgh:
Basic	$ (6.68)	$ 0.13	$ (0.11)
Diluted	$ (6.68)	$ 0.13	$ (0.11)
Weighted average number of common shares outstanding:
Basic	11,951,000	10,435,000	10,405,000
Diluted	11,951,181	10,447,066	10,404,744

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Statement of Comprehensive Income [Abstract]
Net (loss) income	$ (79,809)	$ 1,373	$ (1,187)
Adjustments for changes in:
Foreign exchange translation	(14,580)	(3,967)	(4,703)
Unrecognized employee benefit costs (including effects of foreign currency translation)	9,397	10,713	(21,392)
Unrealized holding gains (losses) on marketable securities	405	(239)	88
Fair value of cash flow hedges	398	(475)	(323)
Reclassification adjustments for items included in net (loss) income:
Amortization of unrecognized employee benefit costs	1,910	4,740	3,458
Realized gains from sale of marketable securities	(1,038)	(53)	(111)
Realized losses from settlement of cash flow hedges	108	435	95
Other comprehensive (loss) income	(3,400)	11,154	(22,888)
Comprehensive (loss) income	(83,209)	12,527	(24,075)
Less: Comprehensive loss attributable to noncontrolling interest	(103)	0	0
Comprehensive (loss) income attributable to Ampco-Pittsburgh	$ (83,106)	$ 12,527	$ (24,075)

Consolidated Statements of Shar

Consolidated Statements of Shareholders' Equity - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Loss [Member]	Noncontrolling Interest [Member]
Beginning Balance at Dec. 31, 2013	$ 234,995	$ 10,373	$ 125,852	$ 144,635	$ (45,865)	$ 0
Stock-based compensation	835		835
Comprehensive (loss) income:
Net (loss) income	(1,187)			(1,187)
Other comprehensive (loss) income	(22,888)				(22,888)
Comprehensive (loss) income	(24,075)
Issuance of common stock including excess tax benefits of $60,$0,$0 for 2014, 2015 and 2016	892	53	839
Cash dividends ($0.72, $0.72 and $0.36 per share for 2014, 2015 and 2016)	(7,499)			(7,499)
Ending Balance at Dec. 31, 2014	205,148	10,426	127,526	135,949	(68,753)	0
Stock-based compensation	1,103		1,103
Comprehensive (loss) income:
Net (loss) income	1,373			1,373
Other comprehensive (loss) income	11,154				11,154
Comprehensive (loss) income	12,527
Issuance of common stock including excess tax benefits of $60,$0,$0 for 2014, 2015 and 2016	225	14	211
Cash dividends ($0.72, $0.72 and $0.36 per share for 2014, 2015 and 2016)	(7,580)			(7,580)
Ending Balance at Dec. 31, 2015	211,423	10,440	128,840	129,742	(57,599)	0
Noncontrolling interest associated with Åkers acquisition (Note 2)	2,019					2,019
Stock-based compensation	1,482		1,482
Comprehensive (loss) income:
Net (loss) income	(79,809)			(79,820)		11
Other comprehensive (loss) income	(3,400)				(3,286)	(114)
Comprehensive (loss) income	(83,209)					(103)
Issuance of common stock including excess tax benefits of $60,$0,$0 for 2014, 2015 and 2016	22,598	1,831	20,767
Cash dividends ($0.72, $0.72 and $0.36 per share for 2014, 2015 and 2016)	(4,479)			(4,479)
Ending Balance at Dec. 31, 2016	$ 147,918	$ 12,271	$ 151,089	$ 45,443	$ (60,885)	$ 1,916

Consolidated Statements of Sha7

Consolidated Statements of Shareholders' Equity (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Issuance of common stock tax benefits	$ 0	$ 0	$ 60
Cash dividends	$ 0.36	$ 0.72	$ 0.72
Common Stock [Member]
Issuance of common stock tax benefits	$ 0	$ 0	$ 60
Additional Paid-in Capital [Member]
Issuance of common stock tax benefits	$ 0	$ 0	$ 60
Retained Earnings [Member]
Cash dividends	$ 0.36	$ 0.72	$ 0.72

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Cash flows from operating activities:
Net (loss) income	$ (79,809)	$ 1,373	$ (1,187)
Adjustments to reconcile net (loss) income to net cash flows from operating activities:
Depreciation and amortization	20,463	11,787	11,818
Charges for impairment	26,676	0	0
Charge (credit) for asbestos litigation	5,631	0	4,487
Deferred income tax provision, including valuation allowance	23,407	(2,302)	(4,556)
Difference between pension and other post retirement expense and contributions	(1,948)	4,972	5,248
Stock-based compensation	2,332	1,328	1,102
Equity (income) losses in Chinese joint venture, including gain on sale (Note 3)	(423)	514	1,061
Provisions for bad debts and inventories	2,348	862	2,343
Provision for warranties net of settlements	(1,015)	(159)	(36)
Excess tax benefits from the exercise of stock options	0	0	(60)
Loss on disposition of assets	21	378	496
Gain on sale of long-term marketable securities	(1,404)	0	0
Other - net	(279)	577	51
Changes in assets/liabilities:
Receivables	5,697	9,391	(6,863)
Inventories	8,308	(4,527)	7,125
Other assets, including insurance receivable - asbestos	20,466	15,300	18,161
Accounts payable	(8,819)	(3,003)	1,588
Accrued payrolls and employee benefits	1,051	452	(938)
Other liabilities, including asbestos liability	(28,337)	(16,438)	(19,865)
Net cash flows (used in) provided by operating activities	(5,634)	20,505	19,975
Cash flows from investing activities:
Purchases of property, plant and equipment	(10,566)	(9,407)	(13,309)
Purchase of Åkers AB, net of cash acquired (Note 2)	(27,031)	0	0
Purchase of ASW Steel Inc., net of cash acquired (Note 2)	(3,265)	0	0
Purchase of Alloys Unlimited & Processing, Inc.	0	(5,000)	0
Purchases of long-term marketable securities	(4,662)	(631)	(843)
Proceeds from the sale of long-term marketable securities	4,646	728	748
Other	0	11	185
Net cash flows used in investing activities	(40,878)	(14,299)	(13,219)
Cash flows from financing activities:
Dividends paid	(5,206)	(7,512)	(7,489)
Debt issuance costs (Note 8)	(1,247)	0	0
Repayment of debt	(962)	0	0
Proceeds from credit facility	9,756	0	0
Payments on credit facility	(11,217)	0	0
Proceeds from the issuance of common stock	0	0	581
Excess tax benefits from the exercise of stock options	0	0	60
Net cash flows used in financing activities	(8,876)	(7,512)	(6,848)
Effect of exchange rate changes on cash and cash equivalents	(1,155)	(670)	(720)
Net decrease in cash and cash equivalents	(56,543)	(1,976)	(812)
Cash and cash equivalents at beginning of year	95,122	97,098	97,910
Cash and cash equivalents at end of year	38,579	95,122	97,098
Supplemental disclosures of cash flow information:
Income tax payments	4,404	3,247	3,418
Interest payments	957	225	237
Non-cash investing activities:
Purchases of property, plant and equipment in accounts payable	996	329	387
Non-cash financing activities:
Issuance of common stock to acquire net assets of Åkers (Note 2)	22,137	0	0
Issuance of debt to acquire net assets of Åkers (Note 2)	$ 22,619	$ 0	$ 0

Description of Business

Description of Business	12 Months Ended
	Dec. 31, 2016
Accounting Policies [Abstract]
Description of Business	Description of Business Ampco-Pittsburgh Corporation and its subsidiaries (the “Corporation”) manufacture and sell highly engineered, high performance specialty metal products and customized equipment utilized by industry throughout the world. It operates in two business segments, the Forged and Cast Engineered Products segment and the Air and Liquid Processing segment. The Forged and Cast Engineered Products In addition, Union Electric Steel produces ingot and open-die forged products (“other forging products”) which are used in the oil and gas industry and the aluminum and plastic extrusion industries. In July 2015, UES acquired the assets of Alloys Unlimited & Processing, Inc. (“AUP”) and, in November 2016, the stock of ASW Steel Inc. (“ASW”). AUP is a supplier of specialty tool, alloy, and carbon steel round bar located in Ohio. ASW is a specialty steel producer based in Ontario, Canada. Both acquisitions support the Corporation’s diversification efforts in the open-die forging market. The segment primarily competes with European, Asian and North and South American companies in both domestic and foreign markets and distributes a significant portion of its products through sales offices located throughout the world. The consolidated financial statements of the Corporation include the financial position and results of operations of the acquired companies from their respective dates of acquisition. The Air and Liquid Processing

Summary of Significant Accounti

Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2016
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	NOTE 1 – SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES: The Corporation’s accounting policies conform to accounting principles generally accepted in the United States of America. The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities as of the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Significant items subject to estimates and assumptions include assessing the carrying value of long-lived assets, determining the fair value of assets acquired and liabilities assumed in a business combination (including intangibles and goodwill and the recoverability thereof), valuing the assets and obligations related to employee benefit plans, accounting for loss contingencies associated with claims and lawsuits, and accounting for income taxes. Actual results could differ from those estimates. A summary of the significant accounting policies followed by the Corporation is presented below. Certain amounts for the preceding periods have been reclassified for comparative purposes. Consolidation The accompanying consolidated financial statements include the assets, liabilities, revenues and expenses of all majority owned subsidiaries and joint ventures over which the Corporation exercises control and, when applicable, entities for which the Corporation has a controlling financial interest or is the primary beneficiary. Investments in joint ventures where the Corporation owns 20% to 50% of the voting stock and has the ability to exercise significant influence over the operating and financial policies of the joint venture are accounted for using the equity method of accounting. Investments in joint ventures whereby the Corporation does not have the ability to exercise significant influence over the operating and financial policies of the joint venture are accounted for using the cost method of accounting. Investments in joint ventures are reviewed for impairment whenever events or circumstances indicate the carrying amount of the investment may not be recoverable. If the estimated fair value of the investment is less than the carrying amount and such decline is determined to be “other than temporary,” then the investment may not be fully recoverable potentially resulting in a write-down of the investment value. Intercompany accounts and transactions are eliminated. Cash and Cash Equivalents Securities with purchased original maturities of three months or less are considered to be cash equivalents. The Corporation maintains cash and cash equivalents at various financial institutions which may exceed federally insured amounts. Inventories Inventories are valued at the lower of cost or market. Cost includes the cost of raw materials, direct labor and overhead for those items manufactured but not yet sold or for which title has not yet transferred. Fixed production overhead is allocated to inventories based on normal capacity of the production facilities. In periods of abnormally high production, the amount of fixed overhead allocated to each unit of production is decreased so that inventories are not measured above cost. The amount of fixed overhead allocated to inventories is not increased as a consequence of abnormally low production or idle plant. Costs for abnormal amounts of spoilage, handling costs and freight costs are charged to expense when incurred. Cost of domestic raw materials, work-in-process and finished goods inventories is primarily determined by the last-in, first-out (LIFO) method. Cost of domestic supplies and foreign inventories is determined primarily by the first-in, first-out (FIFO) method. Property, Plant and Equipment Property, plant and equipment purchased new is recorded at cost with depreciation computed using the straight-line method over the following estimated useful lives: land improvements – 15 to 20 years, buildings – 25 to 50 years and machinery and equipment – 3 to 25 years. Property, plant and equipment acquired as part of a business combination is recorded at its estimated fair value with depreciation computed using the straight-line method over the estimated remaining useful lives based in part on third party valuations. Expenditures that extend economic useful lives are capitalized. Routine maintenance is charged to expense. Gains or losses are recognized on retirements or disposals. Property, plant and equipment are reviewed for impairment at least annually, or whenever events or changes in circumstances indicate the carrying amount of the asset may not be recoverable. If the undiscounted cash flows generated from the use and eventual disposition of the assets are less than their carrying value, then the asset value may not be fully recoverable potentially resulting in a write-down of the asset value. Estimates of future cash flows are based on expected market conditions over the remaining useful life of the primary asset(s). In addition, the remaining depreciation period for the impaired asset would be reassessed and, if necessary, revised. Proceeds from government grants are recorded as a reduction in the purchase price of the underlying assets and amortized against depreciation over the lives of the related assets. Intangible Assets Intangible assets primarily consist of developed technology, customer relationships and trade name. Intangible assets with definite lives are amortized using the straight-line method over their estimated useful life, which is determined by identifying the period over which most of the cash flows are expected to be generated. Additionally, intangible assets, both definite and indefinite lived, are reviewed for impairment at least annually, as of October 1, or whenever events or changes in circumstances indicate the carrying amount of the asset may not be recoverable. If the undiscounted cash flows attributable to the assets are less than their carrying value, then the asset value may not be fully recoverable potentially resulting in a write-down of the asset value. Also, if the estimate of an intangible asset’s remaining useful life changes, the remaining carrying value of the intangible asset will be amortized prospectively over the revised remaining useful life. Goodwill Goodwill represents the consideration paid in a business combination in excess of the values assigned to the net assets of the acquired entity. Goodwill is not amortized but is tested for impairment at the reporting unit level annually, as of October 1, or whenever events or changes in circumstances indicate the carrying amount may not be recoverable. Goodwill is evaluated for impairment either qualitatively or quantitatively using a two-step approach. Under step one, the fair value of the reporting unit is determined using both a market and income approach. If the fair value of the reporting unit is less than the carrying value of the reporting unit, then goodwill may be impaired causing the second step of the analysis to be completed. Under step two, the fair value of the reporting is allocated to the assets and liabilities of the reporting unit. The unallocated fair value (“implied goodwill”), if any, is compared to the recorded value of goodwill. If the implied goodwill exceeds the recorded value of goodwill, then goodwill is deemed not to be impaired. If the implied goodwill is less than the recorded value of goodwill, then goodwill is deemed to be impaired by the amount that goodwill exceeds implied goodwill. Estimating the fair value of a reporting unit requires the use of significant unobservable inputs, representative of a Level 3 fair value measurement, including market growth and market share, sales volumes and prices, costs to produce, discount rate and estimated capital needs. Management considers historical experience and all available information at the time the fair value of the reporting unit is estimated. Assumptions used to estimate future cash flows are subject to a high degree of judgment and complexity. Debt Issuance Costs Debt issuance costs are amortized as interest expense over the scheduled maturity period of the debt. The costs related to our line-of-credit arrangement are amortized over the term of the arrangement, regardless of whether there are any outstanding borrowings. Unamortized debt issuance costs are either recognized as a direct deduction from the carrying amount of the related debt or, if related to a line-of-credit facility, as an other noncurrent asset. Product Warranty Provisions for product warranties are recognized at the time the underlying sale is recorded. The provision is based on historical experience as a percentage of sales adjusted for potential claims when a liability is probable and for known claims. Employee Benefit Plans Funded Status If the fair value of the plan assets exceeds the projected benefit obligation, the over-funded projected benefit obligation is recognized as an asset (prepaid pensions) on the consolidated balance sheet. Conversely, if the projected benefit obligation exceeds the fair value of the plan assets, the under-funded projected benefit obligation is recognized as a liability (employee benefit obligations) on the consolidated balance sheet. Gains and losses arising from the difference between actuarial assumptions and actual experience and unamortized prior service costs are recorded as a separate component of accumulated other comprehensive loss. Net Periodic Pension and Other Postretirement Costs Net periodic pension and other postretirement costs includes service cost, interest cost, expected rate of return on the market-related value of plan assets, amortization of prior service costs and recognized actuarial gains or losses. When actuarial gains or losses exceed 10% of the greater of the projected benefit obligation or the market-related value of plan assets, they are amortized to net periodic pension and other postretirement costs over the average remaining service period of employees expected to receive benefits under the plan. When the actuarial gains or losses are less than 10% of the greater of the projected benefit obligation or the market-related value of plan assets, they are included in net periodic pension and other postretirement costs indirectly as a result of lower/higher interest costs arising from a decrease/increase in the projected benefit obligation. The market-related value of plan assets is determined using a five-year moving average which recognizes 20% of unrealized gains and losses each year. Other Comprehensive Income (Loss) Other comprehensive income (loss) includes changes in assets and liabilities from non-owner sources including foreign currency translation adjustments, unamortized prior service costs and unrecognized actuarial gains and losses associated with employee benefit plans, unrealized holding gains and losses on securities designated as available for sale, and changes in the fair value of derivatives designated and effective as cash flow hedges. Certain components of other comprehensive income (loss) are presented net of income tax. Foreign currency translation adjustments exclude the effect of income tax since earnings of non-U.S. subsidiaries are deemed to be reinvested for an indefinite period of time. Reclassification adjustments are amounts which are realized during the year and, accordingly, are deducted from other comprehensive income (loss) in the period in which they are included in net income (loss) or when a transaction no longer qualifies as a cash flow hedge. Foreign currency translation adjustments are included in net income (loss) upon sale or upon complete or substantially complete liquidation of an investment in a foreign entity. With respect to employee benefit plans, unamortized prior service costs are included in net income (loss) either immediately upon curtailment of the employee benefit plan or over the average remaining service period of employees expected to receive benefits and unrecognized actuarial gains and losses are included in net income (loss) indirectly as a result of lower/higher interest costs arising from a decrease/increase in the projected benefit obligation. Unrealized holding gains and losses on securities are included in net income (loss) when the underlying security is sold. Changes in the fair value of derivatives are included in net income (loss) when the projected sale occurs or, if a foreign currency purchase contract, over the estimated useful life of the underlying asset. Foreign Currency Translation Assets and liabilities of the Corporation’s foreign operations are translated at year-end exchange rates and the statements of operations are translated at the average exchange rates for the year. Gains or losses resulting from translating foreign currency financial statements are accumulated as a separate component of accumulated other comprehensive loss until the entity is sold or substantially liquidated. Revenue Recognition Revenue from sales is recognized when persuasive evidence of an arrangement exists, delivery has occurred, the sales price is fixed or determinable, and collectability is reasonably assured. Persuasive evidence of an arrangement identifies the final understanding between the parties as to the specific nature and terms of the agreed-upon transaction that creates enforceable obligations. It can be in the form of an executed purchase order from the customer, sales agreement issued by the Corporation or a similar arrangement deemed to be normal and customary business practice for that particular customer or class of customer (collectively, a sales agreement). Delivery and performance is considered to have occurred when the customer has taken title and assumed the risks and rewards of ownership of the product. Typically, this occurs when the product is shipped to the customer (i.e., FOB shipping point), delivered to the customer (i.e., FOB destination), or, for foreign sales, in accordance with trading guidelines known as Incoterms. Incoterms are standard trade definitions used in international contracts and are developed, maintained and promoted by the ICC Commission on Commercial Law and Practice. The sales price required to be paid by the customer is fixed or determinable from the sales agreement. It is not subject to refund or adjustment except for a variable-index surcharge provision which increases or decreases, as applicable, the selling price of a rolling mill roll for corresponding changes in the published index cost of certain raw materials. The variable-index surcharge is recognized as revenue when the corresponding revenue for the inventory is recognized. Likelihood of collectability is assessed prior to acceptance of an order. There are no customer-acceptance provisions other than customer inspection and testing prior to shipment. Post-shipment obligations are insignificant. Amounts billed to the customer for shipping and handling are recorded within net sales and the related costs are recorded within costs of products sold (excluding depreciation and amortization). Amounts billed for taxes assessed by various government authorities (e.g., sales tax, value-added tax, etc.) are excluded from the determination of net income (loss) and instead are recorded as a liability until remitted to the government authority. Stock-Based Compensation Stock-based compensation, such as stock options, restricted stock units and performance shares, is recognized over the vesting period based upon the fair value of the award at the date of grant. For stock options, the fair value is determined by the BlackScholes option pricing model and is expensed over the vesting period of three years. For restricted stock units, the fair value is equal to the closing price of the Corporation’s common stock on the New York Stock Exchange (“NYSE”) on the date of grant and is expensed over the vesting period of three years. For performance share awards that vest subject to a performance condition, the fair value is equal to the closing price of the Corporation’s stock on the NYSE on the date of grant. For performance share awards that vest subject to a market condition, fair value is determined using a Monte Carlo simulation model. The fair value of performance share awards is expensed over the performance period when it is probable that the performance condition will be achieved. Derivative Instruments Derivative instruments which include forward exchange (for foreign currency sales and purchases) and futures contracts are recorded on the consolidated balance sheet as either an asset or a liability measured at their fair value. The accounting for changes in the fair value of a derivative depends on the use of the derivative. To the extent that a derivative is designated and effective as a cash flow hedge of an exposure to future changes in value, the change in the fair value of the derivative is deferred in accumulated other comprehensive loss. Any portion considered to be ineffective, including that arising from the unlikelihood of an anticipated transaction to occur, is reported as a component of earnings (other income/expense) immediately. Upon occurrence of the anticipated sale, the foreign currency sales contract designated and effective as a cash flow hedge is de-designated as a fair value hedge and the change in fair value previously deferred in accumulated other comprehensive loss is reclassified to earnings (net sales) with subsequent changes in fair value recorded as a component of earnings (other income/expense). Upon occurrence of the anticipated purchase, the foreign currency purchase contract is settled and the change in fair value deferred in accumulated other comprehensive loss is reclassified to earnings (depreciation and amortization expense) over the life of the underlying assets. Upon settlement of a futures contract, the change in fair value deferred in accumulated other comprehensive loss is reclassified to earnings (costs of products sold, excluding depreciation and amortization) when the corresponding inventory is sold and revenue is recognized. To the extent that a derivative is designated and effective as a hedge of an exposure to changes in fair value, the change in the derivative’s fair value will be offset in the statement of operations by the change in the fair value of the item being hedged and is recorded as a component of earnings (other income/expense). Cash flows associated with the derivative instruments are recorded as a component of operating activities on the consolidated statement of cash flows. The Corporation does not enter into derivative transactions for speculative purposes and, therefore, holds no derivative instruments for trading purposes. Fair Value Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants as of the measurement date. A hierarchy of inputs is used to determine fair value measurements with three levels. Level 1 inputs are quoted prices in active markets for identical assets or liabilities and are considered the most reliable evidence of fair value. Level 2 inputs are observable prices that are not quoted on active exchanges. Level 3 inputs are unobservable inputs used for measuring the fair value of assets or liabilities. Legal Costs Legal costs expected to be incurred in connection with loss contingencies are accrued when such costs are probable and estimable. Income Taxes Income taxes are recognized during the year in which transactions enter into the determination of financial statement income. Deferred income tax assets and liabilities are recognized for the future tax consequences of temporary differences between the book carrying amount and the tax basis of assets and liabilities including net operating loss carryforwards. Unremitted earnings of the Corporation’s non-U.S. subsidiaries and affiliates are deemed to be permanently reinvested and, accordingly, no deferred income tax liability is recorded. A valuation allowance is provided against a deferred income tax asset when it is “more likely than not” the asset will not be realized. Similarly, if a determination is made that it is “more likely than not” the deferred income tax asset will be realized, the related valuation allowance would be reduced and a benefit to earnings would be recorded. Penalties and interest are recognized as a component of the income tax provision. Tax benefits are recognized in the financial statements for tax positions taken or expected to be taken in a tax return when it is “more likely than not” that the tax authorities will sustain the tax position solely on the basis of the position’s technical merits. Consideration is given primarily to legislation and statutes, legislative intent, regulations, rulings and case law as well as their applicability to the facts and circumstances of the tax position when assessing the sustainability of the tax position. In the event a tax position no longer meets the “more likely than not” criteria, the tax benefit is reversed by recognizing a liability and recording a charge to earnings. Conversely, if a tax position subsequently meets the “more likely than not” criteria, a tax benefit would be recognized by reducing the liability and recording a credit to earnings. Earnings Per Common Share Basic earnings per common share is computed by dividing net income (loss) by the weighted average number of common shares outstanding for the period. The computation of diluted earnings per common share is similar to basic earnings per common share except that the denominator is increased to include the dilutive effect of the net additional common shares that would have been outstanding assuming exercise of outstanding stock awards, calculated using the treasury stock method. The computation of diluted earnings per share would not assume the exercise of an outstanding stock award if the effect on earnings per common share would be antidilutive. Similarly, the computation of diluted earnings per share would not assume the exercise of outstanding stock awards if the Corporation incurred a net loss since the effect on earnings per common share would be antidilutive. The weighted average number of common shares outstanding assuming exercise of dilutive stock awards was 11,951,181 for 2016, 10,447,066 for 2015 and 10,404,744 for 2014. Weighted-average outstanding stock awards excluded from the diluted earnings per common share calculation, since the effect would have been antidilutive, were 1,163,396 for 2016, 1,138,287 for 2015 and 1,242,545 for 2014. Recently Implemented Accounting Pronouncements In September 2015, the Financial Accounting Standards Board (“FASB”) issued ASU 2015-16, Simplifying the Accounting for Measurement-Period Adjustments In April 2015, the FASB issued ASU 2015-03, Simplifying the Presentation of Debt Issuance Costs Presentation and Subsequent Measurement of Debt Issuance Costs Associated with Line-of-Credit Arrangements Recently Issued Accounting Pronouncements In August 2016, the FASB issued ASU 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments In May 2016, April 2016, March 2016 and May 2014, the FASB issued ASUs 2016-12, 2016-10, 2016-08 and 2014-09, respectively, Revenue from Contracts with Customers In March 2016, the FASB issued ASU 2016-09, Improvements to Employee Share-Based Payment Accounting In February 2016, the FASB issued ASU 2016-02, Leases In July 2015, the FASB issued ASU 2015-11, Simplifying the Measurement of Inventory

Acquisition

Acquisition	12 Months Ended
	Dec. 31, 2016
Business Combinations [Abstract]
Acquisition	NOTE 2 – ACQUISITIONS: Acquisition of Åkers On March 3, 2016, the Corporation acquired 100% of the voting equity interest of Åkers from Altor Fund II GP Limited. The purchase price, after the post-closing purchase price adjustment made in accordance with the purchase agreement of $3,100, approximated $74,155 and was comprised of $29,399 in cash, $22,619 in the form of three-year promissory notes (Note 8), and 1,776,604 shares of common stock of the Corporation which, based on the closing price of the Corporation’s common stock as of the date of closing, had a fair value of $22,137. The acquisition adds roll production facilities in Sweden, the United States, Slovenia, and China; a number of sales offices; and a service capability in the United States. It enables cast roll production in the United States, forged roll production in Europe, and a low-cost product alternative for customers. Operating results of the acquired entities are included in the Forged and Cast Engineered Products segment from the date of acquisition. For the ten months ended December 31, 2016, net sales for Åkers approximated $121,079 and loss before income taxes, including the effects of purchase accounting, approximated $10,130. The Corporation’s financial position as of March 31, 2016, included the acquired assets and assumed liabilities of Åkers at their provisional fair value estimates. Since the initial disclosure, adjustments have been made to the provisional fair value estimates as follows: • Recorded the post-closing purchase price adjustment which reduced the outstanding principal balance of the three-year promissory notes by $3,100; • Finalized the valuations of property, plant and equipment which increased the fair value of property, plant and equipment by $3,700; • Completed a separate valuation of the Chinese joint venture company which reduced the value of the noncontrolling interest by $9,600; • Finalized valuations of intangible assets, resolved pre-acquisition contingencies and recalculated deferred income taxes which, collectively, approximated $7,400. None of these adjustments had a material impact on the Corporation’s consolidated statement of operations for 2016. The resulting fair value of assets acquired and liabilities assumed as of the date of acquisition is as follows: Current assets (excluding inventories) $ 41,703 Inventories 30,332 Property, plant and equipment 71,871 Intangible assets 11,784 Other noncurrent assets 8,068 Current liabilities (71,690 ) Noncurrent liabilities (43,153 ) Net assets acquired 48,915 Noncontrolling interest (2,019 ) Goodwill 27,259 Base purchase price $ 74,155 The fair values for property, plant and equipment, intangible assets and noncontrolling interest were based, in part, on third party valuations which have been finalized as of December 31, 2016. The fair value of obligations assumed in connection with the employee benefit plans were actuarially determined. Intangible assets consist of $4,429 for developed technology, $4,736 for customer relationships, and $2,619 for trade name. The economic life of the acquired intangible assets is estimated to be 5 years for developed technology, 20 years for customer relationships, and indefinite for the trade name. Included in current liabilities is a loan payable to the noncontrolling shareholder of the Chinese joint venture company which, with accrued interest, approximated $7,468 as of the date of acquisition (see Note 8). Goodwill is not amortized but is tested for impairment at the reporting unit level annually, as of October 1, or whenever events or changes in circumstances indicate the carrying amount may not be recoverable. Based on the first step of the two-step quantitative goodwill impairment test performed as of October 1, 2016, the Corporation determined that the carrying value of the Forged and Cast Engineered Products reporting unit was greater than its estimated fair value, and the second step of the two-step quantitative goodwill impairment test was performed to determine the amount of the impairment charge. For purposes of determining the goodwill impairment, the Corporation estimated the fair value of each reporting unit using both market and income approaches, which includes the use of significant unobservable inputs, representative of a Level 3 fair value measurement, such as market growth and market share, sales volumes and prices, costs to produce, discount rate and estimated capital needs. The market approach consists of the guideline public company method which is a valuation technique where the fair value is calculated based on market prices obtained from a detailed market analysis of publicly traded companies that provide a reasonable basis of comparison for each reporting unit. The income approach is a valuation technique where the fair value is calculated based on forecasted future cash flows within the projection period discounted to the present value with appropriate risk adjusted discount rates, which represent the weighted-average cost of capital for each reporting unit. As a result of the second step evaluation, the Corporation determined that the goodwill reported in the Forged and Cast Engineered Products reporting unit was fully impaired, primarily due to depressed market conditions and limitations inherent in its current market capitalization, and, accordingly, recorded a goodwill impairment charge of $26,261 for the year ended December 31, 2016. The goodwill impairment charge represents a full impairment and differs from the amount recognized as of the acquisition date due to changes in foreign currency exchange rates used to translate goodwill from the entities’ local currency to the U.S. dollar. Acquisition of ASW On November 1, 2016, the Corporation acquired 100% of the voting equity interest of ASW from CK Pearl Fund, Ltd., CK Pearl Fund L.P. and White Oak Strategic Master Fund, L.P. The purchase price of $13,116 consisted of $3,500 in cash and $9,616 in the assumption of outstanding indebtedness. The estimated fair value of assets acquired and liabilities assumed as of the date of the acquisition is summarized below. Current assets (excluding inventories) $ 6,525 Inventories 6,956 Property, plant and equipment 10,310 Current liabilities (10,675 ) Outstanding indebtedness (9,616 ) Base purchase price $ 3,500 The estimated fair values primarily for property, plant and equipment and pre-acquisition contingencies are provisional amounts based, in part, on third party valuations and are expected to be finalized by June 30, 2017. For the two months ended December 31, 2016, net sales for ASW approximated $7,523 and loss before income taxes approximated $1,781. Acquisition-Related Transaction Costs Acquisition-related transaction costs of $3,056 and $3,383 for the year ended December 31, 2016 and 2015, respectively, were incurred relating principally to the purchase of Åkers and ASW and are included in selling and administrative costs. Pro Forma Financial Information for the Åkers and ASW Acquisitions (unaudited) The following financial information presents the combination of the results of operations of Ampco, Åkers and ASW as though the acquisition date for both of the business combinations had occurred as of January 1, 2015. Pro forma adjustments have been made to (1) include the net incremental depreciation and amortization expense associated with recording property, plant and equipment and definite-lived intangible assets at fair value and (2) remove debt-related expenses associated with previous debt facilities not assumed by the Corporation. The following pro forma financial information is presented for informational purposes only and is not necessarily indicative of the results of operations that would have been achieved had the acquisition occurred at the beginning of 2015: Year Ended December 31, 2016 2015 Net sales $ 393,243 $ 440,265 Loss before income taxes (includes noncontrolling interest) $ (63,498 ) $ (11,945 ) Net loss attributable to Ampco-Pittsburgh $ (85,778 ) $ (24,740 ) Net loss per common share (basic) attributable to Ampco-Pittsburgh $ (6.94 ) $ (2.03 ) Other Acquisition On July 29, 2015, the Corporation acquired the assets of AUP. The purchase price of $5 million was funded by available cash. The pro forma impact on Corporation’s net sales and loss before income taxes was not significant to its consolidated results for 2015.

Investments in Joint Ventures

Investments in Joint Ventures	12 Months Ended
	Dec. 31, 2016
Equity Method Investments and Joint Ventures [Abstract]
Investments in Joint Ventures	NOTE 3 – INVESTMENTS IN JOINT VENTURES: As of December 31, 2016, the Corporation has interests in three joint ventures: • Shanxi Åkers TISCO Roll Co., Ltd. (“ATR”) – a cast roll joint venture in China for which the Corporation accounts using the consolidated method of accounting. ATR principally manufactures and sells cast rolling mill rolls for the hot strip mill, steckel mill and medium plate mill. • Union Electric Steel MG Roll Co., Ltd (“UES-MG”) – a forged roll joint venture in China for which the Corporation accounts using the equity method of accounting. UES-MG principally manufactures and sells forged backup rolling mill rolls of a size and weight currently that UES is not currently able to produce. • Jiangsu Gongchang Roll Co., Ltd (“Gongchang”) – a cast roll joint venture in China for which the Corporation accounts using the cost method of accounting. Gongchang principally manufactures and sells cast rolling mill rolls for hot and cold strip mills, medium/heavy section mills and plate mills. ATR In 2007, Åkers AB entered into an agreement with Taiyuan Iron & Steel Co., Ltd. (“TISCO”) to form ATR, with Åkers AB owning 59.88% and TISCO owning 40.12%. Since Åkers AB is the majority shareholder and has voting rights proportional to its ownership interest, Åkers AB is considered the primary beneficiary and, accordingly, accounts for its investment in ATR on the consolidated method of accounting. UES-MG In 2007, a subsidiary of UES entered into an agreement with Maanshan Iron & Steel Company Limited (Maanshan) to form UES-MG, with UES owning 49% and Maanshan owning 51%. Both companies contributed cash for their respective interests (which equated to $14,700 for UES). In November 2016, in connection with an equity restructuring of UES-MG, UES transferred 16% of its equity interest in UES-MG to Gongchang for $2,400, payable in installments over the next three years. UES has not guaranteed any of the obligations of the joint venture; accordingly, its maximum exposure of loss is limited to its remaining investment. Since UES is a minority shareholder and allocation of earnings and voting rights is proportional to ownership interests, UES is not considered the primary beneficiary and, accordingly, accounts for its interest in the joint venture under the equity method of accounting. Prior to the restructuring, the overall financial strength of the joint venture was weak with a significant reliance on the majority shareholder or entities controlled by the majority shareholder to provide financing and working capital. In addition, a significant portion of its sales to date has been to the majority shareholder or entities controlled by the majority shareholder and the majority of its raw materials purchases has been from the majority shareholder or entities controlled by the majority shareholder. The Corporation will continue to monitor the carrying value of the investment to determine if an impairment charge is necessary. The carrying amount of the investment at December 31, 2016 was less than $700. The Corporation recognizes its share of earnings and losses of UES-MG in its consolidated statements of operations. As a result of the transfer of a portion of its equity interest in the joint venture, the Corporation recognized its share of earnings (49%) from October 1, 2015 through the date of transfer, November 2016, which approximated $111. Losses of the joint venture for the twelve-month period ended September 30, 2015 and 2014 approximated $(1,050) and $(2,165), respectively, Assets, liabilities and shareholders’ equity of the joint venture as of November 30, 2016, and September 30, 2015 are summarized below. The difference between the carrying amount of the investment and the value of the underlying equity in the net assets of the joint venture relates primarily to an impairment charge recognized in 2013 and elimination of intercompany profit on the sale of technology from UES to the joint venture in earlier years which will be recognized when realized outside of the controlled group. 2016 2015 Assets: Current assets (includes receivables from related parties of $187 and $935, respectively) $ 7,856 $ 8,332 Noncurrent assets 16,080 28,993 $ 23,936 $ 37,325 Liabilities and Shareholders’ Equity: Current liabilities (includes liabilities to related parties of $3,651 and $17,230, respectively) $ 4,551 $ 17,455 Noncurrent liabilities (includes liabilities to related parties of $813 and $0, respectively) 813 0 Shareholders’ equity 18,572 19,870 $ 23,936 $ 37,325 Gongchang The Corporation has a 24% interest in Gongchang which is recorded at cost, or $1,340. The Corporation does not participate in the management or daily operation of Gongchang, has not guaranteed any of its obligations and has no ongoing responsibilities to it. Dividends may be declared by the Board of Directors of the joint venture after allocation of after-tax profits to various “funds” equal to the minimum amount required under Chinese law. Approximately $395 of dividends were declared and received in 2016. No dividends were declared or received in 2015 or 2014.

Inventories

Inventories	12 Months Ended
	Dec. 31, 2016
Inventory Disclosure [Abstract]
Inventories	NOTE 4 – INVENTORIES: 2016 2015 Raw materials $ 23,964 $ 18,314 Work-in-progress 29,198 21,583 Finished goods 20,046 9,897 Supplies 10,371 9,940 $ 83,579 $ 59,734 At December 31, 2016 and 2015, approximately 45% and 60%, respectively, of the inventories were valued using the LIFO method. The LIFO reserve approximated $(15,139) and $(24,647) at December 31, 2016 and 2015, respectively. During each of the years, inventory quantities decreased for various locations resulting in a liquidation of LIFO layers which were at lower costs. The effect of the liquidations was to decrease costs of products sold (excluding depreciation and amortization) by approximately $936, $216 and $2,196 for 2016, 2015 and 2014, respectively, which reduced net loss by approximately $936 or $0.08 per common share for 2016, increased net income by approximately $141 or $0.01 per common share for 2015, and reduced net loss by approximately $1,427 or $0.14 per common share for 2014.

Property, Plant and Equipment

Property, Plant and Equipment	12 Months Ended
	Dec. 31, 2016
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment	NOTE 5 – PROPERTY, PLANT AND EQUIPMENT: 2016 2015 Land and land improvements $ 11,747 $ 5,223 Buildings 66,017 44,570 Machinery and equipment 323,684 266,358 Construction-in-process 2,595 3,566 Other 7,495 7,774 411,538 327,491 Accumulated depreciation and amortization (197,130 ) (180,578 ) $ 214,408 $ 146,913 The majority of the assets of the Corporation, except real property including the land and building of UES-UK, is pledged as collateral for the Corporation’s Revolving Credit and Security Agreement (see Note 8). Land and buildings of UES-UK, equal to approximately $2,556 (£2,072) at December 31, 2016, are held as collateral by the trustees of the UES-UK defined benefit pension plan (see Note 9). The gross value of assets under capital lease and the related accumulated amortization as of December 31, 2016, approximated $3,610 and $691, respectively.

Intangible Assets

Intangible Assets	12 Months Ended
	Dec. 31, 2016
Goodwill and Intangible Assets Disclosure [Abstract]
Intangible Assets	NOTE 6 – INTANGIBLE ASSETS: 2016 2015 Customer relationships $ 6,244 $ 1,245 Developed technology 4,248 0 Trade name 2,537 0 13,029 1,245 Accumulated amortization (1,428 ) (52 ) $ 11,601 $ 1,193 The following summarizes changes in intangible assets for the year ended December 31: 2016 2015 Balance at the beginning of the year $ 1,193 $ 0 Changes in intangible assets 11,784 1,245 Amortization of intangible assets (1,106 ) (52 ) Other, primarily impact from changes in foreign currency exchange rates (270 ) 0 Balance at the end of the year $ 11,601 $ 1,193 Changes during the year primarily represent intangible assets identified as part of the Åkers acquisition. Intangible assets include an indefinite-lived trade name of $2,537 as of December 31, 2016, that is not subject to amortization. The estimated future amortization expense of identifiable intangible assets is $1,150 for 2017, $1,150 for 2018, $1,150 for 2019, $1,150 for 2020, $485 for 2021 and $3,979 thereafter.

Other Current Liabilities

Other Current Liabilities	12 Months Ended
	Dec. 31, 2016
Other Liabilities Disclosure [Abstract]
Other Current Liabilities	NOTE 7 – OTHER CURRENT LIABILITIES: 2016 2015 Customer-related liabilities $ 21,564 $ 12,195 Accrued interest payable 2,274 3 Income taxes payable 0 3,256 Accrued sales commissions 1,693 1,506 Other 16,666 6,920 $ 42,197 $ 23,880 Customer-related liabilities include liabilities for product warranty claims and deposits received on future orders. The following summarizes changes in the liability for product warranty claims for the year ended December 31: 2016 2015 2014 Balance at the beginning of the year $ 6,358 $ 6,672 $ 6,899 Acquisitions – opening balance sheet liability for warranty claims 7,130 0 0 Satisfaction of warranty claims (4,297 ) (2,452 ) (2,335 ) Provision for warranty claims 3,282 2,293 2,300 Other, primarily impact from changes in foreign currency exchange rates (952 ) (155 ) (192 ) Balance at the end of the year $ 11,521 $ 6,358 $ 6,672

Borrowing Arrangements

Borrowing Arrangements	12 Months Ended
	Dec. 31, 2016
Debt Disclosure [Abstract]
Borrowing Arrangements	NOTE 8 – BORROWING ARRANGEMENTS: In May 2016, the Corporation entered into a five-year Revolving Credit and Security Agreement (the “Agreement”) with a syndicate of banks. The Agreement provides for a senior secured asset-based revolving credit facility that replaces the Corporation’s existing line of credit and letter of credit facilities. The Agreement provides for initial borrowings not to exceed $100,000 with an option to increase the credit facility by an additional $50,000 at the request of the Corporation and with the approval of the banks. In October, 2016, the Corporation amended the Agreement to provide additional intercompany lending capacity to its Excluded Subsidiaries and expand available currencies for its letters of credits. As amended to date, the Agreement includes sublimits for letters of credit, not to exceed $40,000, European borrowings not to exceed $15,000, and Canadian borrowings not to exceed $15,000. See Note 22. Availability under the Agreement is based on eligible accounts receivable, inventory and fixed assets. Amounts outstanding under the credit facility bear interest at the Corporation’s option at either (1) LIBOR plus an applicable margin ranging between 1.25% to 1.75% based on the quarterly average excess availability or (2) the Base Rate plus an applicable margin ranging between 0.25% to 0.75% based on the quarterly average excess availability. Additionally, the Corporation is required to pay a commitment fee ranging between 0.25% and 0.375% based on the daily unused portion of the credit facility. As of December 31, 2016, the Corporation had utilized a portion of the credit facility for letters of credit (Note 10) and had remaining availability of approximately $54,000. The Agreement is collateralized by a first priority perfected security interest in substantially all of the assets of the Corporation and its subsidiaries (other than real property). Additionally, the Agreement contains customary affirmative and negative covenants and limitations including but not limited to investments in Excluded Subsidiaries, payment of dividends, incurrence of additional indebtedness, upstreaming distributions from subsidiaries, and acquisitions and divestures. The Corporation must also maintain a certain level of excess availability. If excess availability falls below the established threshold, or in an event of default, the Corporation will be required to maintain a minimum fixed charge coverage ratio of not less than 1.00 to 1.00. The Corporation was in compliance with the applicable bank covenants as of December 31, 2016. Outstanding borrowings of the Corporation as of December 31, 2016 and 2015 consisted of the following: 2016 2015 Industrial Revenue Bonds $ 13,311 $ 13,311 Promissory notes (and interest) 23,844 0 Minority shareholder loan 4,990 0 Credit facility 7,146 0 Term loan 762 0 Capital leases 2,161 0 52,214 13,311 Current portion (26,825 ) (13,311 ) $ 25,389 $ 0 Future principal payments, assuming demand loans are called in 2017 and the Industrial Revenue Bonds are not able to be remarketed, are $26,825 for 2017, $585 for 2018, $24,257 for 2019, $337 for 2020 and $210 for 2021. The Corporation also had short-term lines of credit of approximately $750 (£250 in the United Kingdom and €400 in Belgium). No amounts were outstanding under these lines of credit as of December 31, 2016 and 2015. Deferred financing fees of approximately $1,250 have been incurred for the Agreement and are being amortized over the life of the Agreement. Industrial Revenue Bonds As of December 31, 2016, the Corporation had the following Industrial Revenue Bonds (IRBs) outstanding: (1) $4,120 tax-exempt IRB maturing in 2020, interest at a floating rate which averaged 0.50% during the current year; (2) $7,116 taxable IRB maturing in 2027, interest at a floating rate which averaged 0.65% during the current year; and (3) $2,075 tax-exempt IRB maturing in 2029, interest at a floating rate which averaged 0.59% during the current year. The IRBs are secured by letters of credit of equivalent amounts and are remarketed periodically at which time interest rates are reset. If the IRBs are not able to be remarketed, although considered remote by the Corporation and its bankers, the bondholders can seek reimbursement from the letters of credit which serve as collateral for the bonds. Promissory Notes In connection with the acquisition of Åkers, the Corporation issued three-year promissory notes amounting to $22,619. The notes bear interest at 6.5%, compounding annually, with principal and interest payable at maturity on March 3, 2019. As of December 31, 2016, accrued interest approximated $1,225 which is included in long-term debt on the consolidated balance sheet. Minority Shareholder Loan ATR has a $4,990 (RMB 34,655) loan outstanding with its minority shareholder. The loan originally matured in 2008 but has been renewed continually for one-year periods. Interest does not compound and has accrued on the outstanding balance, since inception, at the three-to-five-year loan interest rate set by the People’s Bank of China in effect at the time of renewal. The interest rate for 2016 approximated 4.90% and accrued interest as of December 31, 2016 approximated $2,265 (RMB 15,730), which is recorded in other current liabilities on the consolidated balance sheet. Credit Facility and Term Loan ASW has a credit facility which provides for borrowings of up to $20,000, based on eligible accounts receivable and inventory, payable on demand. Amounts outstanding under the credit facility bear interest at 4% plus the higher of LIBOR or 1% and a collateral fee of 1.20%. ASW is also required to pay a commitment fee of approximately 0.5% based on the daily unused portion of the credit facility. The effective interest rate for the two months ended December 31, 2016 approximated 5.11%. As of December 31, 2016, ASW had borrowed $7,146, the maximum available under the facility. Additionally, at December 31, 2016, ASW had $762 outstanding under a $5,000 fixed-rate term facility which bears interest at 7.25% plus the higher of LIBOR or 1%. The effective interest rate for the two months ended December 31, 2016 approximated 9.16%. The credit facility and term loan mature in June 2017. In the event of an early termination, the Corporation will incur a fee equal to 2% of the credit facility or $400. The agreements contain customary affirmative and negative covenants and is collateralized by a first priority perfected security interest in substantially all of the assets of ASW. As of December 31, 2016, ASW was in compliance with the terms of the agreements and its amendments. See Note 22. Capital Leases The Corporation leases equipment under various noncancelable lease agreements ending 2018 to 2021. Effective interest rates range between 1.20% and 5.30%.

Pension and Other Postretiremen

Pension and Other Postretirement Benefits	12 Months Ended
	Dec. 31, 2016
Compensation and Retirement Disclosure [Abstract]
Pension and Other Postretirement Benefits	NOTE 9 – PENSION AND OTHER POSTRETIREMENT BENEFITS: U.S. Pension Benefits Historically, the Corporation had one qualified domestic defined benefit pension plan (“legacy plan”). As part of the Åkers acquisition, the Corporation assumed the obligations for two additional U.S. plans (“Åkers plans”). Collectively, the plans cover substantially all of its U.S. employees. Effective June 1, 2016, the Åkers salary plan was amended to freeze benefit accruals and participation in the plan and replace benefit accruals with employer non-elective contributions equaling 3% of compensation. The plan change resulted in remeasurement of the liability, reducing the liability by approximately $1,181 as of December 31, 2016, and a curtailment gain of $887 for the year ended December 31, 2016. Additionally, effective July 1, 2015, the legacy plan was amended to freeze benefit accruals and participation in the plan for non-union hourly and salaried participants and, effective January 1, 2016, for employees of the Union Electric Steel Carnegie Steelworkers Location. Benefits under the legacy plan were replaced with employer contributions of a 3% non-elective base contribution and a matching contribution of up to 4% to the defined contribution plan. The plan changes resulted in a remeasurement of the plan liability, reducing the liability by approximately $10,306 as of December 31, 2015, and curtailment losses of $1,303 for the year ended December 31, 2015. Additionally, the legacy plan was amended in both of the years to permit lump sum distributions to deferred vested participants and deferred beneficiaries who were not previously offered a lump sum. Employer contributions to the defined contribution plans totaled $2,466 and $882 for 2016 and 2015, respectively, and are expected to approximate $2,810 in 2017. The U.S. defined benefit pension plans are covered by the Employee Retirement Income Security Act of 1974 (“ERISA”); accordingly, the Corporation’s policy is to fund at least the minimum actuarially computed annual contribution required under ERISA. No minimum contributions were required for any of the three years for the legacy plan or, since the date of acquisition, for the Åkers plans. Additionally, no minimum contributions are required for any of the plans in 2017. Estimated benefit payments for subsequent years are $13,206 for 2017, $13,535 for 2018, $13,944 for 2019, $14,195 for 2020, $14,485 for 2021 and $73,814 for 2022 – 2026. The fair value of the plan assets as of December 31, 2016 and 2015 approximated $188,722 and $139,376, respectively, in comparison to accumulated benefit obligations of $235,299 and $173,243 for the same periods. The Corporation also maintains nonqualified defined benefit pension plans for selected executives in addition to the benefits provided under the Corporation’s qualified defined benefit pension plan. The objectives of the nonqualified plans are to provide supplemental retirement benefits or restore benefits lost due to limitations set by the Internal Revenue Service. The assets of the nonqualified plans are held in a grantor tax trust known as a “Rabbi” trust and are subject to claims of the Corporation’s creditors, but otherwise must be used only for purposes of providing benefits under the plans. No contributions were made to the trust in 2014 – 2016 and none are expected in 2017. The fair market value of the trust at December 31, 2016 and 2015, which is included in other noncurrent assets, was $3,863 and $3,663, respectively. Changes in the fair market value of the trust are recorded as a component of other comprehensive income (loss). The plan is treated as a non-funded pension plan for financial reporting purposes. Accumulated benefit obligations approximated $6,639 and $5,676 at December 31, 2016 and 2015, respectively. Estimated benefit payments for subsequent years, which would represent employer contributions, are approximately $417 for 2017, $438 for 2018, $452 for 2019, $463 for 2020, $482 for 2020 and $2,548 for 2022-2026. Employees at one location participate in a multi-employer plan, I.A.M. National Pension Fund, I.A.M. National Pension Fund • More than 1,650 employer locations contribute to the plan • Approximately 100,000 active employees participate in the plan • Assets of approximately $11.6 billion and a funded status of approximately 101%. Less than 100 of the Corporation’s employees participate in the plan and contributions are based on a rate per hour. The Corporation’s contributions to the plan equaled $237, $236 and $233 in 2016, 2015 and 2014, respectively, and represent less than five percent of total contributions to the plan by all contributing employers. Contributions are expected to approximate $259 in 2017. Foreign Pension Benefits Employees of UES-UK participate in a defined benefit pension plan that was curtailed effective December 31, 2004 and replaced with a defined contribution pension plan. The UES-UK plans are non-U.S. plans and therefore are not covered by ERISA. Instead, the Trustees and UES-UK have agreed to a recovery plan that estimates the amount of employer contributions at £1,123 annually through October 2021, based on U.K. regulations, necessary to eliminate the funding deficit of the plan with such estimates subject to change based on the future investment performance of the plan’s assets. The U.S. dollar equivalent of employer contributions to the defined benefit pension plan approximated $1,522, $1,715 and $1,849 in 2016, 2015 and 2014, respectively. The fair value of the plan’s assets as of December 31, 2016 and 2015 approximated $48,055 (£38,955) and $49,628 (£33,528), respectively, in comparison to accumulated benefit obligations of $61,277 (£49,673) and $63,750 (£43,069) for the same periods. Estimated benefit payments for subsequent years for the UES-UK plan are $1,249 for 2017, $1,752 for 2018, $2,042 for 2019, $1,906 for 2020, $1,883 for 2021 and $11,679 for 2022-2026. Contributions to the defined contribution pension plan approximated $252, $382 and $407 in 2016, 2015 and 2014, respectively, and are expected to approximate $276 in 2017. As part of the Åkers acquisition, the Corporation assumed the obligations of two foreign defined benefit pension plans. The plans are unfunded and not significant (projected benefit obligations approximate $5,633 at December 31, 2016). Estimated benefit payments for subsequent years, for both plans combined, are $189 for 2017, $224 for 2018, $274 for 2019, $274 for 2020, $306 for 2021 and $1,333 for 2022-2026. Other Postretirement Benefits The Corporation has historically provided postretirement health care benefits principally to the bargaining groups of one subsidiary (“legacy OPEB plan”). The legacy OPEB plan covers participants and their spouses and/or dependents who retire under the existing pension plan on other than a deferred vested basis and at the time of retirement have also rendered 15 or more years of continuous service irrespective of age. During 2015, the plan was amended to provide monthly reimbursement for a 5-year period, which reduced the plan liability by approximately $4,437. Retiree life insurance continues to be provided to substantially all retirees. The Corporation also provides health care and life insurance benefits to former employees of certain discontinued operations. This obligation had been estimated and provided for at the time of disposal. As part of the Åkers acquisition, the Corporation assumed the obligations for two additional postretirement benefit plans (“Åkers OPEB plans”). The Åkers OPEB plans cover retiree medical and life insurance benefits. In August 2016, the Corporation modified the Åkers OPEB plans effective January 1, 2017 whereby retiree health benefits for certain groups of pre-Medicare eligible employees will be replaced with a monthly stipend. The plan changes resulted in a reduction in prior service costs decreasing plan liabilities by approximately $4,762, which will be amortized against other postretirement benefit costs over the expected remaining service periods of approximately 7.5 and 12 years, versus recognized immediately. The Corporation’s postretirement health care and life insurance plans are not funded or subject to any minimum regulatory funding requirements. Estimated benefit payments for subsequent years, which would represent employer contributions, for the legacy and Åkers OPEB plans are approximately $1,289 for 2017, $1,331 for 2018, $1,358 for 2019, $1,455 for 2020, $1,279 for 2021 and $5,825 for 2022-2026. Reconciliations The following provides a reconciliation of projected benefit obligations (“PBO”), plan assets, the funded status of the plans and the amounts recognized in the consolidated balance sheets for the Corporation’s defined benefit plans calculated using a measurement date as of the end of the respective years. U.S. Pension Benefits (a) Foreign Pension Other Postretirement 2016 2015 2016 2015 2016 2015 Change in projected benefit obligations: PBO at January 1 $ 181,803 $ 205,399 $ 63,750 $ 70,523 $ 8,117 $ 13,739 Åkers acquisition – PBO at March 3 68,081 0 5,393 0 17,467 0 Service cost 1,714 2,743 314 0 504 384 Interest cost 9,977 7,990 2,250 2,394 722 474 Plan amendments 0 447 0 0 (4,762 ) (4,437 ) Plan settlements (b) (2,739 ) (5,494 ) 0 0 0 0 Plan curtailments (1,181 ) (10,306 ) 0 0 0 0 Foreign currency exchange rate changes 0 0 (11,477 ) (3,413 ) 0 0 Actuarial (gain) loss (160 ) (9,880 ) 8,869 (4,005 ) (1,598 ) (1,433 ) Participant contributions 0 0 0 0 80 79 Benefits paid from plan assets (12,679 ) (8,772 ) (2,189 ) (1,749 ) 0 0 Benefits paid by the Corporation (376 ) (324 ) 0 0 (1,471 ) (689 ) PBO at December 31 $ 244,440 $ 181,803 $ 66,910 $ 63,750 $ 19,059 $ 8,117 Change in plan assets: Fair value of plan assets at January 1 $ 139,376 $ 157,048 $ 49,628 $ 50,533 $ 0 $ 0 Åkers acquisition – fair value of plan assets at March 3 50,108 0 0 0 0 0 Actual return on plan assets 14,656 (3,406 ) 7,859 1,701 0 0 Foreign currency exchange rate changes 0 0 (8,930 ) (2,572 ) 0 0 Corporate contributions 376 324 1,687 1,715 1,391 610 Participant contributions 0 0 0 0 80 79 Plan settlements (b) (2,739 ) (5,494 ) 0 0 0 0 Gross benefits paid (13,055 ) (9,096 ) (2,189 ) (1,749 ) (1,471 ) (689 ) Fair value of plan assets at December 31 $ 188,722 $ 139,376 $ 48,055 $ 49,628 $ 0 $ 0 Funded status of the plans: Fair value of plan assets $ 188,722 $ 139,376 $ 48,055 $ 49,628 $ 0 $ 0 Less benefit obligations 244,440 181,803 66,910 63,750 19,059 8,117 Funded status at December 31 $ (55,718 ) $ (42,427 ) $ (18,855 ) $ (14,122 ) $ (19,059 ) $ (8,117 ) (a) Includes the nonqualified defined benefit pension plan. (b) Represents lump sum payments. U.S. Pension Foreign Pension Other Postretirement 2016 2015 2016 2015 2016 2015 Recognized in the balance sheets: Employee benefit obligations: Accrued payrolls and employee benefits (a) $ (409 ) $ (352 ) $ 0 $ 0 $ (1,276 ) $ (612 ) Employee benefit obligations (b) (55,309 ) (42,075 ) (18,855 ) (14,122 ) (17,783 ) (7,505 ) $ (55,718 ) $ (42,427 ) $ (18,855 ) $ (14,122 ) $ (19,059 ) $ (8,117 ) Accumulated other comprehensive loss: (c) Net actuarial loss $ 48,153 $ 53,163 $ 25,547 $ 27,594 $ 936 $ 2,570 Prior service cost 209 237 0 0 (15,581 ) (12,097 ) $ 48,362 $ 53,400 $ 25,547 $ 27,594 $ (14,645 ) $ (9,527 ) (a) Recorded as a current liability in the consolidated balance sheet. (b) Recorded as a noncurrent liability in the consolidated balance sheet. (c) Amounts are pre-tax. Amounts included in accumulated other comprehensive loss as of December 31, 2016 expected to be recognized in net periodic pension and other postretirement costs in 2017 include: U.S. Pension Foreign Pension Other Postretirement Net actuarial loss $ 1,212 $ 790 $ 67 Prior service cost (credit) 52 0 (1,620) $ 1,264 $ 790 $ (1,553) Investment Policies and Strategies The investment policies and strategies are determined and monitored by the Board of Directors for the U.S. pension plans and by the Trustees (as appointed by UES-UK and the employees of UES-UK) for the UES-UK pension plan, each of whom employ their own investment managers to manage the plan’s assets in accordance with the policy guidelines. The foreign pension plans of Åkers are unfunded. Pension assets are invested with the objective of maximizing long-term returns while minimizing material losses to meet future benefit obligations as they become due. Investments in equity securities are primarily in common stocks of publicly-traded U.S. and international companies across a broad spectrum of industry sectors. Investments in fixed-income securities are principally A-rated or better bonds with maturities of less than ten years, preferred stocks and convertible bonds. The Corporation believes there are no significant concentrations of risk associated with the Plans’ assets. Attempts to minimize risk include allowing temporary changes to the allocation mix in response to market conditions, diversifying investments among asset categories (e.g., equity securities, fixed-income securities, alternative investments, cash and cash equivalents) and within these asset categories (e.g., economic sector, industry, geographic distribution, size) and consulting with independent financial and legal counsels to assure that the investments and their expected returns and risks are consistent with the goals of the Board of Directors or Trustees. With respect to the U.S. pension plans, the following investments are prohibited unless otherwise approved by the Board of Directors: stock of the Corporation, futures and options except for hedging purposes, unregistered or restricted stock, warrants, margin trading, short-selling, real estate excluding public or real estate partnerships, and commodities including art, jewelry and gold. The foreign pension plan invests in specific funds. Any investments other than those specifically identified would be considered prohibited. The following summarizes target asset allocations (within +/-5% considered acceptable) and major asset categories. Certain investments are classified differently for target asset allocation purposes and external reporting purposes. In addition, for the legacy plan, the Corporation changed investment managers in December 2016; accordingly, there is temporarily a higher amount in cash and cash equivalents. U.S. Pension Benefits Foreign Pension Benefits Target Percentage of Plan Target Percentage of Plan Dec. 31, 2016 2016 2015 Dec. 31, 2016 2016 2015 Equity Securities 65 % 47 % 58 % 44 % 48 % 46 % Fixed-Income Securities 15 % 21 % 19 % 35 % 34 % 33 % Alternative Investments 15 % 8 % 13 % 21 % 18 % 21 % Other (primarily cash and cash equivalents) 5 % 24 % 10 % 0 % 0 % 0 % Fair Value Measurement of Plan Assets Equity securities and mutual funds are actively traded on exchanges and price quotes for these investments are readily available. Similarly, corporate debt and preferred securities consist of fixed-income securities of U.S. and U.K. corporations and price quotes for these investments are readily available. Common collective trust and commingled funds are not traded publicly, but the underlying assets (such as stocks and bonds) held in these funds are traded on active markets and the prices for the underlying assets are readily observable. For securities not actively traded, the fair value may be based on third-party appraisals, discounted cash flow analysis, benchmark yields and inputs that are currently observable in markets for similar securities. Investment Strategies The significant investment strategies of the various funds are summarized below. Fund Investment Strategy Primary Investment Objective Temporary Investment Funds Invests primarily in a diversified portfolio of investment grade money market instruments. Achieve a market level of current income while maintaining stability of principal and liquidity. Various Equity Funds Each fund maintains a diversified holding in common stock of applicable companies (e.g., common stock of small capitalization companies if a small-cap fund, common stock of medium capitalization companies if a mid-cap fund, common stock of foreign corporations if an international fund, etc.). Outperform the fund’s related index. Various Fixed Income Funds Invests primarily in a diversified portfolio of fixed-income securities of varying maturities or in commingled funds which invest in a diversified portfolio of fixed-income securities of varying maturities. For the U.S. Plans – to outperform either the Barclays Capital U.S. Aggregate Index or US Corporate High Yield Index, as applicable, over a prescribed period. For the Foreign Plans – to outperform the applicable FTSE index over a prescribed period. Alternative Investments – Managed Funds Invests in equities and equity-like asset classes and strategies (such as public equities, venture capital, private equity, real estate, natural resources and hedged strategies) and fixed-income securities. Generate a minimum annual inflation adjusted return of 5% and outperform a traditional 70/30 equities/bond portfolio. Alternative Investments – Hedge and Absolute Return Funds Invests in a diversified portfolio of alternative investment styles and strategies. Generate long-term capital appreciation while maintaining a low correlation with the traditional global financial markets. Categories of Plan Assets Asset categories based on the nature and risks of the U.S. Pension Benefit Plans’ assets as of December 31, 2016 are summarized below. Quoted Prices in Significant Other (Level 2) Significant (Level 3) Total Equity Securities: U.S. Bank & financial services $ 631 $ 0 $ 0 $ 631 Capital goods 75 0 0 75 Chemicals 20 0 0 20 Commercial services 16 0 0 16 Electronics 67 0 0 67 Health care 201 0 0 201 Mutual funds 72,571 0 0 72,571 Oil & gas 87 0 0 87 Retail 101 0 0 101 Technology 188 0 0 188 Transportation 18 0 0 18 Wholesale distribution 16 0 0 16 Other (represents 8 business sectors) 211 0 0 211 International Chemicals 7 0 0 7 Technology 6 0 0 6 Total Equity Securities 74,215 0 0 74,215 Fixed Income Securities: Mutual funds 36,601 0 0 36,601 Total Fixed Income Securities 36,601 0 0 36,601 Alternative Investments: Managed funds (a) 0 0 33,830 33,830 Total Alternative Investments 0 0 33,830 33,830 Other: Money market mutual funds 27,902 0 0 27,902 Commingled funds 0 154 0 154 Other (b) 16,020 0 0 16,020 Total Other 43,922 154 0 44,076 $ 154,738 $ 154 $ 33,830 $ 188,722 (a) Includes approximately 45.9% in equity and equity-like asset securities, 44.5% in alternative investments (real assets, commodities and resources, absolute return funds) and 7.4% in fixed income securities and 2.2% in other, primarily cash and cash equivalents. (b) Includes accrued receivables and pending broker settlements. Asset categories based on the nature and risks of the U.S. Pension Benefit Plan’s assets as of December 31, 2015 are summarized below. Quoted Prices in Significant Other Significant (Level 3) Total Equity Securities: U.S. Capital goods $ 1,531 $ 0 $ 0 $ 1,531 Chemicals 1,811 0 0 1,811 Commercial property 906 0 0 906 Commercial services 925 0 0 925 Common collective trust funds 0 31,291 0 31,291 Electronics 785 0 0 785 Food processing 2,856 0 0 2,856 Health care 1,815 0 0 1,815 Limited partnerships – public equity 4,173 0 0 4,173 Manufacturing 1,536 0 0 1,536 Oil & gas 1,499 0 0 1,499 Retail 706 0 0 706 Technology 1,674 0 0 1,674 Transportation 484 0 0 484 Wholesale distribution 789 0 0 789 Other (represents 13 business sectors) 5,695 0 0 5,695 International Bank & financial services 1,525 0 0 1,525 Common collective trust funds 0 3,078 0 3,078 Engineering & construction 729 0 0 729 Oil & gas 807 0 0 807 Real estate 937 0 0 937 Technology 265 0 0 265 Other (represents 9 business sectors) 2,391 0 0 2,391 Total Equity Securities 33,839 34,369 0 68,208 Fixed-Income Securities: Commingled funds 0 14,697 0 14,697 Preferred (represents 5 business sectors) 6,689 0 0 6,689 Other (represents 4 business sectors) 0 1,280 0 1,280 Total Fixed-Income Securities 6,689 15,977 0 22,666 Alternative Investments: Managed funds (a) 0 0 32,210 32,210 Hedge and absolute return funds 0 0 4,967 4,967 Total Alternative Investments 0 0 37,177 37,177 Other: Mutual funds 1,836 0 0 1,836 Commingled funds 0 1,005 0 1,005 Other (b) 8,484 0 0 8,484 Total Other 10,320 1,005 0 11,325 $ 50,848 $ 51,351 $ 37,177 $ 139,376 (a) Includes approximately 38% in equity and equity-like asset securities, 43% in alternative investments (real assets, commodities and resources, absolute return funds) and 19% in fixed income securities and cash and cash equivalents. (b) Includes accrued receivables and pending broker settlements. Asset categories based on the nature and risks of the Foreign Pension Benefit Plan’s assets as of December 31, 2016 are summarized below. Quoted Prices in Significant Other Significant Total Equity Securities: Commingled Funds (U.K.) $ 0 $ 3,716 $ 0 $ 3,716 Commingled Funds (International) 0 19,146 0 19,146 Total Equity Securities 0 22,862 0 22,862 Fixed-Income Securities: Commingled Funds (U.K.) 0 16,426 0 16,426 Alternative Investments: Hedge and Absolute Return Funds 0 0 8,593 8,593 Cash and cash equivalents 174 0 0 174 $ 174 $ 39,288 $ 8,593 $ 48,055 Asset categories based on the nature and risks of the Foreign Pension Benefit Plan’s assets as of December 31, 2015 are summarized below. Quoted Prices in Significant Other Significant Total Equity Securities: Commingled Funds (U.K.) $ 0 $ 3,697 $ 0 $ 3,697 Commingled Funds (International) 0 18,930 0 18,930 Total Equity Securities 0 22,627 0 22,627 Fixed-Income Securities: Commingled Funds (U.K.) 0 16,298 0 16,298 Alternative Investments: Hedge and Absolute Return Funds 0 0 10,571 10,571 Cash and cash equivalents 132 0 0 132 $ 132 $ 38,925 $ 10,571 $ 49,628 The table below sets forth a summary of changes in the fair value of the Level 3 plan assets for U.S. and foreign pension plans for the year ended December 31, 2016. Alternative Investments U.S. Pension Foreign Pension Fair value as of January 1, 2016 $ 4,967 $ 32,210 $ 10,571 Contributions 0 0 0 Withdrawals (4,967 ) 0 0 Realized gains (losses) 0 1,857 0 Change in net unrealized (losses) gains 0 (237 ) (280 ) Other, primarily impact from changes in foreign currency exchange rates 0 0 (1,698 ) Fair value as of December 31, 2016 $ 0 $ 33,830 $ 8,593 The table below sets forth a summary of changes in the fair value of the Level 3 plan assets for U.S. and foreign pension plans for the year ended December 31, 2015. Alternative Investments U.S. Pension Foreign Pension Fair value as of January 1, 2015 $ 8,592 $ 33,602 $ 10,799 Contributions 5,900 0 0 Withdrawals (9,843 ) (2,424) 0 Realized gains (losses) 2,334 (19) 0 Change in net unrealized (losses) gains (2,016 ) 1,051 320 Other, primarily impact from changes in foreign currency exchange rates 0 0 (548 ) Fair value as of December 31, 2015 $ 4,967 $ 32,210 $ 10,571 Net Periodic Pension and Other Postretirement Benefit Costs The actual return on the fair value of plan assets is included in determining the funded status of the plans. In determining net periodic pension costs, the expected long-term rate of return on the market-related value of plan assets is used. Differences between the actual return on plan assets and the expected long-term rate of return on plan assets are classified as part of unrecognized actuarial gains or losses and are recorded as a component of accumulated other comprehensive loss on the consolidated balance sheet. When these gains or losses exceed 10% of the greater of the projected benefit obligation or the market-related value of plan assets, they are amortized to net periodic pension and other postretirement costs over the average remaining service period of employees expected to receive benefits under the plans. When the gains or losses are less than 10% of the greater of the projected benefit obligation or the market-related value of plan assets, they are included in net periodic pension and other postretirement costs indirectly as a result of lower/higher interest costs arising from a decrease/increase in the projected benefit obligation. Net periodic pension and other postretirement benefit costs include the following components for the year ended December 31: U.S. Pension Foreign Pension Other Postretirement 2016 2015 2014 2016 2015 2014 2016 2015 2014 Service cost $ 1,714 $ 2,743 $ 3,683 $ 314 $ 0 $ 0 $ 504 $ 384 $ 505 Interest cost 9,977 7,990 8,762 2,250 2,394 2,695 722 474 688 Expected return on plan assets (13,424 ) (10,996 ) (10,747 ) (2,461 ) (2,681 ) (3,157 ) 0 0 0 Amortization of: Prior service cost (credit) 44 371 854 0 0 0 (1,277 ) (672 ) (441 ) Actuarial loss 3,324 5,440 4,183 670 845 599 36 26 104 Curtailment (gain) loss (887 ) 1,303 0 0 0 0 0 0 0 $ 748 $ 6,851 $ 6,735 $ 773 $ 558 $ 137 $ (15 ) $ 212 $ 856 Assumptions Assumptions are reviewed on an annual basis. The expected long-term rate of return on plan assets is an estimate of average rates of earnings expected to be earned on funds invested or to be invested to provide for the benefits included in the projected benefit obligation. Since these benefits will be paid over many years, the expected long-term rate of return is reflective of current investment returns and investment returns over a longer period. Consideration is also given to target and actual asset allocations, inflation and real risk-free return. The discount rates used in determining future pension obligations and other postretirement benefits for each of the plans are based on rates of return on high-quality fixed-income investments currently available and expected to be available during the period to maturity of the pension and other postretirement benefits. High-quality fixed-income investments are defined as those investments which have received one of the two highest ratings given by a recognized rating agency with maturities of 10+ years. The discount rates and weighted-average wage increases used to determine the benefit obligations as of December 31, 2016 and 2015 are summarized below. U.S. Pension Foreign Pension Other Postretirement 2016 2015 2016 2015 2016 2015 Discount rate 4.02-4.25 % 4.40 % 2.50-2.65 % 3.65 % 3.90-4.13 % 4.20 % Wage increases 3.00 % 3.00 % n/a n/a n/a n/a In addition, the assumed health care cost trend rate at December 31, 2016 for other postretirement benefits is 6% for 2017 gradually decreasing to 4.75% in 2020. In selecting rates for current and long-term health care assumptions, the Corporation considers known health care cost increases, the design of the benefit programs, the demographics of its active and retiree populations and expectations of inflation rates in the future. A one percentage point increase or decrease in the assumed health care cost trend rate would result in an inconsequential change to the postretirement benefit obligation at December 31, 2016 and the annual benefit expense for 2016. The following assumptions were used to determine net periodic pension and other postretirement benefit costs for the year ended December 31: U.S. Pension Foreign Pension Other Postretirement 2016 2015 2014 2016 2015 2014 2016 2015 2014 Discount rate 4.20-4.40 % 4.00-4.10 % 5.00% 3.00-3.65 % 3.50 % 4.50 % 3.80-4.20 % 4.00 % 5.00 % Expected long-term rate of return 6.90-7.75 % 8.00 % 8.00% 5.40 % 5.40 % 6.50 % n/a n/a n/a Wages increases 3.00 % 4.00 % 4.00% n/a n/a n/a n/a n/a n/a

Commitments and Contingent Liab

Commitments and Contingent Liabilities	12 Months Ended
	Dec. 31, 2016
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingent Liabilities	NOTE 10 – COMMITMENTS AND CONTINGENT LIABILITIES: Outstanding standby and commercial letters of credit as of December 31, 2016 approximated $22,305, of which approximately half serves as collateral for the IRB debt. In addition, in connection with the acquisition of Åkers, the Corporation issued two surety bonds to PRI Pensionsgaranti, guaranteeing certain obligations of Åkers Sweden AB and Åkers AB under a credit insurance policy relating to pension commitments. The total amount covered by the surety bonds is approximately $4,000 (SEK 33,900). Approximately 38% of the Corporation’s employees are covered by collective bargaining agreements that have expiration dates ranging from September 2017 to February 2020. Collective bargaining agreements expiring in 2017 (representing approximately 28% of covered employees) will be negotiated with the intent to secure mutually beneficial, long-term arrangements. See Note 13 regarding derivative instruments, Note 19 regarding litigation and Note 20 for environmental matters.

Stock-Based Compensation

Stock-Based Compensation	12 Months Ended
	Dec. 31, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock-Based Compensation	NOTE 11 – STOCK-BASED COMPENSATION: In May 2011, the shareholders of the Corporation approved the adoption of the Ampco-Pittsburgh Corporation 2011 Omnibus Incentive Plan (the “Predecessor Plan”), which authorized the issuance of up to 1,000,000 shares of the Corporation’s common stock for grants of equity-based compensation. In May 2016, the shareholders of the Corporation approved the adoption of the Ampco-Pittsburgh Corporation 2016 Omnibus Incentive Plan (the “Incentive Plan”), which authorizes the issuance of up to 1,100,000 shares of the Corporation’s common stock for awards under the Incentive Plan. The Incentive Plan replaces the Predecessor Plan and no new awards will be granted under the Predecessor Plan. Any awards outstanding under the Predecessor Plan will remain subject to and be paid under the Predecessor Plan, and any shares subject to outstanding awards under the Predecessor Plan that subsequently expire, terminate, or are surrendered or forfeited for any reason without issuance of shares (equal to 2,500 shares at December 31, 2016) will automatically become available for issuance under the Incentive Plan. Awards under the Incentive Plan may include incentive non-qualified stock options, stock appreciation rights, restricted shares and restricted stock units, performance awards, other stock-based awards or short-term cash incentive awards. If any award is canceled, terminates, expires or lapses for any reason prior to the issuance of shares, or if shares are issued under the Incentive Plan and thereafter are forfeited to the Corporation, the shares subject to such awards and the forfeited shares will not count against the aggregate number of shares available under the Incentive Plan. Shares tendered or withheld to pay the option exercise price or tax withholding will continue to count against the aggregate number of shares of common stock available for grant under the Incentive Plan. Any shares repurchased by the Corporation with cash proceeds from the exercise of options will not be added back to the pool of shares available for grant under the Incentive Plan. The Incentive Plan may be administered by the Board of Directors or the Compensation Committee of the Board of Directors. The Compensation Committee has the authority to determine, within the limits of the express provisions of the Incentive Plan, the individuals to whom the awards will be granted and the nature, amount and terms of such awards. The Incentive Plan also provides for equity-based awards during any one year to non-employee members of the Board of Directors, based on the grant date fair value, not to exceed $200. The limit does not apply to shares received by a non-employee director at his or her election in lieu of all or a portion of the director’s retainer for board service. The number of shares of common stock issued to non-employee directors was 32,090 in 2016 under the Incentive Plan and 14,310 shares in 2015 and 12,500 shares in 2014 under the Predecessor Plan. In 2016 and 2015, the Compensation Committee granted time-vesting restricted stock units (RSUs) and performance-vesting restricted stock units (PSUs) to select individuals. Each RSU represents the right to receive one share of common stock of the Corporation at a future date after the RSU has become earned and vested, subject to the terms and conditions of the RSU award agreement. The RSUs vest over a three-year period. The PSUs can be earned depending upon the achievement of a performance or market condition and a time-vesting condition as follows: (1) achievement of a targeted basic earnings per share during the performance period beginning in the year of grant and continuing for two subsequent years, (2) achievement of a three-year cumulative relative total shareholder return as ranked against other companies included in the Corporation’s peer group and (3) remaining continuously employed with the Corporation through the end of the year following three years from the date of grant. Earlier vesting of the stock units is permitted under certain conditions, such as upon a change of control of the Corporation. The grant date fair value for the RSUs equals the closing price of the Corporation’s common stock on the NYSE on the date of grant. The grant date fair value for PSUs subject to a market condition is determined using a Monte Carlo simulation model and the grant date fair value for PSUs that vest subject to a performance condition is equal to the closing price of the Corporation’s stock on the NYSE on the date of grant. The determination of the fair value of these awards takes into consideration the likelihood of achievement of the market or performance condition and is adjusted for subsequent changes in the estimated or actual outcome of the condition. Unrecognized compensation expense associated with the RSUs and PSUs equaled $2,897 at December 31, 2016 and is expected to be recognized over a weighted average period of approximately 2 years. A summary of outstanding and exercisable incentive options (RSUs and PSUs) as of December 31, 2016, and activity for the year ended December 31, 2016 is as follows: Number of Weighted Weighted Outstanding at January 1, 2016 90,836 $ 15.72 26,263 $ 15.89 Granted 94,644 18.70 21,164 26.54 Converted (29,635 ) 15.72 0 N/A Forfeited/cancelled 0 N/A (8,079 ) 15.89 Outstanding at December 31, 2016 155,845 $ 17.53 39,348 $ 21.62 In 2014, the Compensation Committee granted 176,000 non-qualified stock options under the Predecessor Plan which have a ten-year life and vest over a three-year period. The exercise price is $20, equal to the closing price of the Corporation’s common stock on the NYSE on the date of grant. The fair value of the option as of the date of grant was $7.40, calculated using the Black-Scholes option-pricing model using the following assumptions: expected life of 6 years; risk-free interest rate of 1.98%, expected annual dividend yield of 3.6%, expected forfeiture rate of 8% and expected volatility of 53.02%. Resulting stock compensation expense approximated $1,199. Unrecognized compensation expense equaled $120 at December 31, 2016 and is expected to be recognized in 2017. A summary of outstanding and exercisable stock options as of December 31, 2016, and activity for the year ended December 31, 2016 is as follows: Number of Weighted Remaining Intrinsic Value Outstanding at January 1, 2016 1,013,336 $ 24.03 5.2 $ 0 Granted 0 N/A Exercised 0 N/A Forfeited (7,500 ) 19.37 Outstanding at December 31, 2016 1,005,836 $ 24.07 4.2 $ 0 Exercisable at December 31, 2016 957,113 $ 24.28 4.0 $ 0 Vested or expected to vest at December 31, 2016 1,005,836 $ 24.07 4.2 $ 0 Stock-based compensation expense for all awards, including expense for shares to be issued to non-employee directors, approximated $2,332, $1,328 and $1,102 for 2016, 2015 and 2014, respectively. The related income tax benefit recognized in the consolidated statements of operations was $465 and $386 for 2015 and 2014, respectively. There was no income tax benefit for 2016 due to the Corporation having a valuation allowance recorded against its deferred income tax assets for the jurisdiction where the expense is recognized. See Note 15.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Loss	12 Months Ended
	Dec. 31, 2016
Equity [Abstract]
Accumulated Other Comprehensive Loss	NOTE 12 – ACCUMULATED OTHER COMPREHENSIVE LOSS: Net change and ending balances for the various components of other comprehensive income (loss) and for accumulated other comprehensive loss as of and for the year ended December 31, 2014, 2015 and 2016 are summarized below. Foreign Currency Translation Adjustments Unrecognized Components of Employee Benefit Plans Unrealized on Securities Derivatives Accumulated Balance at January 1, 2014 $ 277 $ (47,462 ) $ 1,007 $ 313 $ (45,865 ) Net Change (4,703 ) (17,934 ) (23 ) (228 ) (22,888 ) Balance at December 31, 2014 (4,426 ) (65,396 ) 984 85 (68,753 ) Net Change (3,967 ) 15,453 (292 ) (40 ) 11,154 Balance at December 31, 2015 (8,393 ) (49,943 ) 692 45 (57,599 ) Net Change (14,580 ) 11,307 (633 ) 506 (3,400 ) Balance at December 31, 2016 $ (22,973 ) $ (38,636 ) $ 59 $ 551 $ (60,999 ) The following summarizes the line items affected on the consolidated statements of operations for components reclassified from accumulated other comprehensive loss for each of the years ended December 31. Amounts in parentheses represent credits to net income (loss). 2016 2015 2014 Amortization of unrecognized employee benefit costs: Costs of products sold (excluding depreciation and amortization) $ 2,463 $ 3,604 $ 3,601 Selling and administrative (719 ) 3,354 1,524 Other expense 166 355 174 Total before income tax 1,910 7,313 5,299 Income tax provision 0 (2,573 ) (1,841 ) Net of income tax $ 1,910 $ 4,740 $ 3,458 Realized gains on sale of marketable securities: Selling and administrative $ (1,404 ) $ (82 ) $ (171 ) Income tax provision 366 29 60 Net of income tax $ (1,038 ) $ (53 ) $ (111 ) Realized gains/losses from settlement of cash flow hedges: Net sales (foreign currency sales contracts) $ (6 ) $ (17 ) $ 33 Depreciation and amortization (foreign currency purchase contracts) (27 ) (27 ) (27 ) Costs of products sold (excluding depreciation and amortization) (futures contracts – copper and aluminum) 220 751 146 Total before income tax 187 707 152 Income tax provision (79 ) (272 ) (57 ) Net of income tax $ 108 $ 435 $ 95 The income tax expense (benefit) associated with the various components of other comprehensive income (loss) for each of the years ended December 31 is summarized below. For 2016, there was no income tax benefit for certain items due to the Corporation having a valuation allowance recorded against its deferred income tax assets for the jurisdiction where the expense is recognized. See Note 15. Foreign currency translation adjustments exclude the effect of income taxes since earnings of non-U.S. subsidiaries are deemed to be reinvested for an indefinite period of time. 2016 2015 2014 Income tax expense (benefit) associated with changes in: Unrecognized employee benefit costs $ 0 $ (4,731) $ 10,265 Unrealized holding losses/gains on marketable securities 0 134 (47 ) Fair value of cash flow hedges 0 294 206 Income tax expense (benefit) associated with reclassification adjustments: Amortization of unrecognized employee benefit costs 0 (2,573 ) (1,841 ) Realized gains from sale of marketable securities 366 29 60 Realized losses from settlement of cash flow hedges (79 ) (272 ) (57 )

Derivative Instruments

Derivative Instruments	12 Months Ended
	Dec. 31, 2016
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Instruments	NOTE 13 – DERIVATIVE INSTRUMENTS: Certain operations of the Corporation are subject to risk from exchange rate fluctuations in connection with sales in foreign currencies. To minimize this risk, foreign currency sales contracts are entered into which are designated as cash flow or fair value hedges. As of December 31, 2016, approximately $18,727 of anticipated foreign-denominated sales has been hedged which are covered by fair value contracts settling at various dates through April 2018. The fair value of assets held as collateral for the fair value contracts as of December 31, 2016 approximated $600. Additionally, certain divisions of the Air and Liquid Processing segment are subject to risk from increases in the price of commodities (copper and aluminum) used in the production of inventory. To minimize this risk, futures contracts are entered into which are designated as cash flow hedges. At December 31, 2016, approximately 48% or $2,200 of anticipated copper purchases over the next year and 56% or $400 of anticipated aluminum purchases over the next six months are hedged. The Corporation previously entered into foreign currency purchase contracts to manage the volatility associated with euro-denominated progress payments to be made for certain machinery and equipment. As of December 31, 2010, all contracts had been settled and the underlying fixed assets were placed in service. No portion of the existing cash flow or fair value hedges is considered to be ineffective, including any ineffectiveness arising from the unlikelihood of an anticipated transaction to occur. Additionally, no amounts have been excluded from assessing the effectiveness of a hedge. At December 31, 2016, the Corporation has purchase commitments covering 24% or $1,298 of anticipated natural gas usage for 2017 for one of its subsidiaries. The commitments qualify as normal purchases and, accordingly, are not reflected on the consolidated balance sheet. Purchases of natural gas under previously existing commitments approximated $1,936, $2,452 and $2,190 for 2016, 2015 and 2014, respectively. The Corporation does not enter into derivative transactions for speculative purposes and, therefore, holds no derivative instruments for trading purposes. The following summarizes location and fair value of the foreign currency sales contracts recorded on the consolidated balance sheets as of December 31: Location 2016 2015 Cash flow hedge contracts Other current assets $ 0 $ 10 Fair value hedge contracts Other current assets 214 113 Other noncurrent assets 2 0 Other current liabilities 940 258 Other noncurrent liabilities 35 49 Fair value hedged item Receivables 121 27 Other current assets 808 255 Other noncurrent assets 45 39 Other current liabilities 233 116 Other noncurrent liabilities 5 0 The change in the fair value of the cash flow contracts is recorded as a component of accumulated other comprehensive loss. Amounts recognized as and reclassified from accumulated other comprehensive loss are recorded as a component of other comprehensive income (loss) and are summarized below. Amounts are after-tax, where applicable. Certain amounts recognized as comprehensive income (loss) for 2016 have no tax effect due to the Corporation recording a valuation allowance against its deferred income tax assets in the related jurisdictions. See Note 15. For the Year Ended December 31, 2016 Comprehensive Income (Loss) Beginning of Plus Recognized as Comprehensive Less Gain (Loss) Reclassified from Accumulated Other Comprehensive Loss Comprehensive Income (Loss) End of Foreign currency sales contracts – cash flow hedges $ 4 $ 0 $ 4 $ 0 Foreign currency purchase contracts 241 0 25 216 Future contracts – copper and aluminum (200 ) 398 (137 ) 335 $ 45 $ 398 $ (108 ) $ 551 For the Year Ended December 31, 2015 Foreign currency sales contracts – cash flow hedges $ 0 $ 14 $ 10 $ 4 Foreign currency purchase contracts 258 0 17 241 Future contracts – copper and aluminum (173 ) (489 ) (462 ) (200 ) $ 85 $ (475 ) $ (435 ) $ 45 For the Year Ended December 31, 2014 Foreign currency sales contracts – cash flow hedges $ 0 $ (21 ) $ (21 ) $ 0 Foreign currency purchase contracts 275 0 17 258 Future contracts – copper and aluminum 38 (302 ) (91 ) (173 ) $ 313 $ (323 ) $ (95 ) $ 85 The change in fair value reclassified or expected to be reclassified from accumulated other comprehensive loss to earnings is summarized below. All amounts are pre-tax. Location of Estimated to be Year Ended December 31, of Operations 12 Months 2016 2015 2014 Foreign currency sales contracts – cash flow hedges Net sales $ 0 $ 6 $ 17 $ (33 ) Foreign currency purchase contracts Depreciation and amortization 27 27 27 27 Futures contracts – copper and aluminum Costs of products sold (excluding depreciation and amortization) 398 (220 ) (751 ) (146 ) Losses on foreign exchange transactions included in other expense approximated $(1,161), $(324) and $(488) for 2016, 2015 and 2014, respectively.

Fair Value

Fair Value	12 Months Ended
	Dec. 31, 2016
Fair Value Disclosures [Abstract]
Fair Value	NOTE 14 – FAIR VALUE: The following summarizes financial assets and liabilities reported at fair value on a recurring basis in the accompanying consolidated balance sheets at December 31: 2016 Quoted Prices Identical Inputs (Level 1) Significant Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Total Investments Other noncurrent assets $ 3,863 $ 0 $ 0 $ 3,863 Foreign currency exchange contracts Other current assets 0 1,022 0 1,022 Other noncurrent assets 0 47 0 47 Other current liabilities 0 1,173 0 1,173 Other noncurrent liabilities 0 40 0 40 2015 Investments Other noncurrent assets $ 3,663 $ 0 $ 0 $ 3,663 Foreign currency exchange contracts Other current assets 0 378 0 378 Other noncurrent assets 0 39 0 39 Other current liabilities 0 374 0 374 Other noncurrent liabilities 0 49 0 49 The investments held as other noncurrent assets represent assets held in the “Rabbi” trust for the purpose of providing benefits under the non-qualified defined benefit pension plan. The fair value of the investments is based on quoted prices of the investments in active markets. The fair value of foreign currency exchange contracts is determined based on the fair value of similar contracts with similar terms and remaining maturities. The fair value of futures contracts is based on market quotations. The fair value of the variable-rate debt approximates its carrying value. Additionally, the fair value of trade receivables and trade payables approximates their carrying value.

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Income Taxes	NOTE 15 – INCOME TAXES: (Loss) income before income taxes and equity gains (losses) in Chinese joint venture is comprised of the following: 2016 2015 2014 Domestic $ (26,326 ) $ 6,000 $ (1,182 ) Foreign (31,194 ) (1,480 ) 290 $ (57,520 ) $ 4,520 $ (892 ) At December 31, 2016, the Corporation has federal net operating loss carryforwards of $1,865, which begin to expire in 2036, state net operating loss carryforwards of $26,757 which begin to expire in 2018, foreign net operating loss carryforwards of $78,548 which begin to expire in 2026 and capital loss carryforwards of $745 which do not expire. The income tax provision (benefit) consisted of the following: 2016 2015 2014 Current: Federal $ (1,574 ) $ 4,577 $ 3,458 State 465 378 210 Foreign 414 (20 ) 122 (695 ) 4,935 3,790 Deferred Federal (2,688 ) (2,203 ) (4,678 ) State (1,838 ) 197 54 Foreign (2,472 ) (296 ) 101 Increase (reversal) of valuation allowance 30,405 0 (33 ) 23,407 (2,302 ) (4,556 ) $ 22,712 $ 2,633 $ (766 ) In 2016, the income tax provision was affected by recognition of a valuation allowance against all U.S. and certain foreign entities as it was considered more-likely-than-not that the net deferred income tax assets would not be realized. The Corporation assessed available positive and negative evidence to estimate whether sufficient future taxable income would be generated to permit use of the existing deferred income tax assets. During 2016, the Corporation has incurred three years of cumulative losses, inclusive of the acquired Åkers businesses as if the businesses were held during the entire three-year period. Such objective evidence limits the ability to consider other subjective evidence, such as projections for future growth and profitability. On the basis of this evaluation, the Corporation established an increase in the valuation allowance to recognize the estimated portion of deferred income tax assets that is more likely than not to not be realized. The difference between statutory U.S. federal income tax and the Corporation’s effective income tax was as follows: 2016 2015 (1) 2014 (1) Computed at statutory rate $ (19,984 ) $ 1,402 $ (683 ) Tax differential on non-U.S. earnings 1,790 106 128 State income taxes (1,535 ) 226 (227 ) Manufacturers deduction (I.R.C. Section 199) 204 (433 ) (359 ) Meals and entertainment 143 136 224 Tax credits 0 (243 ) (12 ) Goodwill impairment 9,191 0 0 Increase (reversal) of valuation allowance 30,405 0 (33 ) Change in tax rates 1,913 224 301 Change in uncertain tax positions 114 91 (80 ) Acquisition-related costs 571 981 0 Other – net (100 ) 143 (25 ) $ 22,712 $ 2,633 $ (766 ) (1) Certain reclassifications have been made to the prior year columns to conform to the current year presentation. Deferred income tax assets and liabilities as of December 31, 2016 and 2015 are summarized below. Unremitted earnings of the Corporation’s non-U.S. subsidiaries and affiliates are deemed to be permanently reinvested and, accordingly, no deferred income tax liability has been recorded. It is not practical to estimate the income tax effect that might be incurred if cumulative prior year earnings not previously taxed in the United States were remitted to the United States. 2016 2015 Assets: Employment – related liabilities $ 18,659 $ 9,644 Pension liability – foreign 2,241 2,822 Pension liability – domestic 16,133 12,934 Liabilities related to discontinued operations 241 704 Capital loss carryforwards 282 223 Asbestos-related liability 21,024 16,356 Net operating loss – domestic 653 0 Net operating loss – state 2,123 1,445 Net operating loss – foreign 19,106 0 Inventory related 2,157 4,292 Impairment charge associated with investment in UES-MG 2,184 2,298 Investment tax credits – foreign 791 0 Other 6,660 3,311 Gross deferred income tax assets 92,254 54,029 Valuation allowance (1) (45,449 ) (2,481 ) 46,805 51,548 Liabilities: Depreciation (37,584 ) (29,223 ) Mark-to-market adjustment – derivatives (187 ) (40 ) Intangible assets – definite life (2,067 ) 0 Intangible assets – indefinite life (731 ) 0 Other (2,003 ) (1,716 ) Gross deferred income tax liabilities (42,572 ) (30,979 ) Net deferred income tax assets $ 4,233 $ 20,569 (1) Certain deferred income tax assets acquired in the ASW acquisition had valuation allowances recorded in the opening balance sheet. Accordingly, the valuation allowance indicated in the deferred income tax table differs from the valuation allowance recognized in the income tax provision for 2016. The following summarizes changes in unrecognized tax benefits for the year ended December 31: 2016 2015 2014 Balance at the beginning of the year $ 315 $ 52 $ 270 Gross increases for tax positions taken in the current year 0 0 0 Gross increases for tax positions taken in prior years 0 283 2 Gross decreases in tax positions due to lapse in statute of limitations (79 ) (20 ) (61 ) Gross decreases for tax positions taken in prior years 0 0 (17 ) Gross decreases for tax settlements with taxing authorities 0 0 (142 ) Balance at the end of the year $ 236 $ 315 $ 52 If the unrecognized tax benefits were recognized, $49 would reduce the Corporation’s effective income tax rate. The amount of penalties and interest recognized in the consolidated balance sheets as of December 31, 2016 and 2015 and in the consolidated statements of operations for 2016, 2015 and 2014 is insignificant. Unrecognized tax benefits of $134 are to expire due to the lapse in the statute of limitations within the next 12 months. The Corporation is subject to taxation in the United States, various states and foreign jurisdictions, and remains subject to examination by tax authorities for tax years 2013-2016. The combined Indiana income tax returns for 2010-2013 are under examination by the Indiana Department of Revenue which started during the first quarter of 2015. The examination is still ongoing as of December 31, 2016. In March 2017, the Corporation was notified by the Internal Revenue Service that the 2014 federal return of one of the Åkers’ entities was selected for examination. The examination has not yet begun.

Operating Leases

Operating Leases	12 Months Ended
	Dec. 31, 2016
Leases [Abstract]
Operating Leases	NOTE 16 – OPERATING LEASES: The Corporation leases certain factory and office space and certain equipment. Operating lease expense was $1,148 in 2016, $1,043 in 2015 and $995 in 2014. Operating lease payments for subsequent years are $719 for 2017, $578 for 2018, $522 for 2019, $414 for 2020, $395 for 2021 and $804 thereafter.

Research and Development Costs

Research and Development Costs	12 Months Ended
	Dec. 31, 2016
Research and Development [Abstract]
Research and Development Costs	NOTE 17 – RESEARCH AND DEVELOPMENT COSTS: Expenditures relating to the development of new products, identification of products or process alternatives and modifications and improvements to existing products and processes are expensed as incurred. These expenses approximated $2,716 for 2016, $1,137 for 2015 and $1,328 for 2014.

Related Parties

Related Parties	12 Months Ended
	Dec. 31, 2016
Related Party Transactions [Abstract]
Related Parties	NOTE 18 – RELATED PARTIES: In the ordinary course of business, the Corporation purchased industrial supplies from a subsidiary of The Louis Berkman Company (“LB Co”). Certain directors of the Corporation are either officers, directors and/or shareholders of LB Co. Purchases from LB Co approximated $955 in 2016, $1,270 in 2015 and $1,358 in 2014. In addition, LB Co paid the Corporation approximately $72 in 2015 and $100 in 2014 for certain administrative services. The net amount payable to LB Co approximated $93 at December 31, 2015. No amounts were due or payable for 2016. The Corporation does not intend to purchase industrial supplies from LB Co in 2017. ATR has a $4,990 (RMB 34,655) loan outstanding with its minority shareholder. The loan originally matured in 2008 but has been renewed continually for one year periods. Interest does not compound and has accrued on the outstanding balance, since inception, at the three-to-five-year loan interest rate set by the People’s Bank of China in effect at the time of renewal. The interest rate for 2016 approximated 4.90% and accrued interest as of December 31, 2016 approximated $2,265 (RMB 15,730), which is recorded in other current liabilities on the consolidated balance sheet. Purchases from ATR’s minority shareholder approximated $140 (RMB 931) in 2016. Excluding the loan and interest outstanding, the amount payable to ATR’s minority shareholder at December 31, 2016 for purchases made in the ordinary course of business approximated $206 (RMB 1,429).

Litigation

Litigation	12 Months Ended
	Dec. 31, 2016
Text Block [Abstract]
Litigation	NOTE 19 – LITIGATION: The Corporation and its subsidiaries are involved in various claims and lawsuits incidental to their businesses and are also subject to asbestos litigation as described below. In addition, in February 2017, the Corporation, its indirect subsidiary Åkers National Roll Corporation, as well as the Åkers National Roll Company Health & Welfare Benefits Plan were named as defendants in a class action complaint filed in the United States District Court for the Western District of Pennsylvania, where the plaintiffs (currently retired former employees of Åkers National Roll Company, as well as United Steel, Paper and Forestry, Rubber, Manufacturing, Energy, Allied Industrial, and Service Workers International Union, AFL-CIO) alleged that the defendants breached collective bargaining agreements and violated the benefit plan by modifying medical benefits of the plaintiffs and similarly situated retirees. The complaint seeks class certification. The Corporation believes the lawsuit is without merit and intend to vigorously defend it. While no assurance can be given as to the ultimate outcome of this matter, the Corporation believes that the final resolution of this action will not have a material adverse effect on our results of operations, financial position, liquidity or capital resources. Asbestos Litigation Claims have been asserted alleging personal injury from exposure to asbestos-containing components historically used in some products of predecessors of Air & Liquid Systems Corporation (“Asbestos Liability”). Those subsidiaries, and in some cases the Corporation, are defendants (among a number of defendants, often in excess of 50) in cases filed in various state and federal courts. Asbestos Claims The following table reflects approximate information about the claims for Asbestos Liability against the subsidiaries and the Corporation for the two years ended December 31, 2016 and 2015: 2016 2015 Total claims pending at the beginning of the period 6,212 8,457 New claims served 1,452 1,424 Claims dismissed (782 ) (3,339 ) Claims settled (264 ) (330 ) Total claims pending at the end of the period (1) 6,618 6,212 Gross settlement and defense costs (in 000’s) $ 17,960 $ 19,199 Average gross settlement and defense costs per claim resolved (in 000’s) $ 17.17 $ 5.23 (1) Included as “open claims” are approximately 444 and 430 claims in 2016 and 2015, respectively, classified in various jurisdictions as “inactive” or transferred to a state or federal judicial panel on multi-district litigation, commonly referred to as the MDL. A substantial majority of the settlement and defense costs reflected in the above table was reported and paid by insurers. Because claims are often filed and can be settled or dismissed in large groups, the amount and timing of settlements, as well as the number of open claims, can fluctuate significantly from period to period. Asbestos Insurance The Corporation and its Air & Liquid Systems Corporation (“Air & Liquid”) subsidiary are parties to a series of settlement agreements (“Settlement Agreements”) with insurers that have coverage obligations for Asbestos Liability (the “Settling Insurers”). Under the Settlement Agreements, the Settling Insurers accept financial responsibility, subject to the terms and conditions of the respective agreements, including overall coverage limits, for pending and future claims for Asbestos Liability. The Settlement Agreements encompass the substantial majority of insurance policies that provide coverage for claims for Asbestos Liability. The Settlement Agreements include acknowledgements that Howden North America, Inc. (“Howden”) is entitled to coverage under policies covering Asbestos Liability for claims arising out of the historical products manufactured or distributed by Buffalo Forge, a former subsidiary of the Corporation (the “Products”). The Settlement Agreements do not provide for any prioritization on access to the applicable policies or any sublimits of liability as to Howden or the Corporation and Air & Liquid, and, accordingly, Howden may access the coverage afforded by the Settling Insurers for any covered claim arising out of a Product. In general, access by Howden to the coverage afforded by the Settling Insurers for the Products will erode coverage under the Settlement Agreements available to the Corporation and Air & Liquid for Asbestos Liability. On February 24, 2011, the Corporation and Air & Liquid filed a lawsuit in the United States District Court for the Western District of Pennsylvania against thirteen domestic insurance companies, certain underwriters at Lloyd’s, London and certain London market insurance companies, and Howden. The lawsuit sought a declaratory judgment regarding the respective rights and obligations of the parties under excess insurance policies that were issued to the Corporation from 1981 through 1984 as respects claims against the Corporation and Air & Liquid for Asbestos Liability and as respects asbestos bodily-injury claims against Howden arising from the Products. By September 2013, the Corporation and Air & Liquid had reached Settlement Agreements with all but two of the defendant insurers in the coverage action. Those Settlement Agreements specify the terms and conditions upon which the insurer parties are to contribute to defense and indemnity costs for claims for Asbestos Liability. One of the Settlement Agreements entered into by the Corporation and Air & Liquid also provided for the dismissal of claims, without prejudice, regarding two upper-level excess policies issued by one of the insurers. The Court entered Orders dismissing all claims in the action filed against each other by the Corporation and Air & Liquid, on the one hand, and by the settling insurers, on the other. Howden also reached an agreement with eight domestic insurers addressing asbestos-related bodily injury claims arising from the Products, and claims as to those insurers and Howden were also dismissed. Various counterclaims, cross claims and third party claims had been filed in the litigation and remained pending as of September 27, 2013 although only two domestic insurers and Howden remained in the litigation as to the Corporation and Air & Liquid at that time. On September 27, 2013, the Court issued a memorandum opinion and order granting in part and denying in part cross motions for summary judgment filed by the Corporation and Air & Liquid, Howden, and the insurer parties still in the litigation. On February 26, 2015, the Court issued final judgment. One insurer filed a notice of appeal from the judgment to the U.S. Court of Appeals to the Third Circuit; as a result, several other insurers, Howden, the Corporation, and Air & Liquid filed notices of appeal. On November 2, 2016, the Corporation and Air & Liquid reached a settlement with one of the two insurer defendants that remained in the litigation as to them. Thereafter, the U.S. Court of Appeals issued an order of dismissal of the case on November 23, 2016 by agreement of all parties. Asbestos Valuations In 2006, the Corporation retained Hamilton, Rabinovitz & Associates, Inc. (“HR&A”), a nationally recognized expert in the valuation of asbestos liabilities, to assist the Corporation in estimating the potential liability for pending and unasserted future claims for Asbestos Liability. Based on this analysis, the Corporation recorded a reserve for Asbestos Liability claims pending or projected to be asserted through 2013 as of December 31, 2006. HR&A’s analysis has been periodically updated since that time. Most recently, the HR&A analysis was updated in 2016, and additional reserves were established by the Corporation as of December 31, 2016 for Asbestos Liability claims pending or projected to be asserted through 2026. The methodology used by HR&A in its projection in 2016 of the operating subsidiaries’ liability for pending and unasserted potential future claims for Asbestos Liability, which is substantially the same as the methodology employed by HR&A in prior estimates, relied upon and included the following factors: • HR&A’s interpretation of a widely accepted forecast of the population likely to have been exposed to asbestos; • epidemiological studies estimating the number of people likely to develop asbestos-related diseases; • HR&A’s analysis of the number of people likely to file an asbestos-related injury claim against the subsidiaries and the Corporation based on such epidemiological data and relevant claims history from January 1, 2014 to September 9, 2016; • an analysis of pending cases, by type of injury claimed and jurisdiction where the claim is filed; • an analysis of claims resolution history from January 1, 2014 to September 9, 2016 to determine the average settlement value of claims, by type of injury claimed and jurisdiction of filing; and • an adjustment for inflation in the future average settlement value of claims, at an annual inflation rate based on the Congressional Budget Office’s ten year forecast of inflation. Using this information, HR&A estimated in 2016 the number of future claims for Asbestos Liability that would be filed through the year 2026, as well as the settlement or indemnity costs that would be incurred to resolve both pending and future unasserted claims through 2026. This methodology has been accepted by numerous courts. In conjunction with developing the aggregate liability estimate referenced above, the Corporation also developed an estimate of probable insurance recoveries for its Asbestos Liabilities. In developing the estimate, the Corporation considered HR&A’s projection for settlement or indemnity costs for Asbestos Liability and management’s projection of associated defense costs (based on the current defense to indemnity cost ratio), as well as a number of additional factors. These additional factors included the Settlement Agreements then in effect, policy exclusions, policy limits, policy provisions regarding coverage for defense costs, attachment points, prior impairment of policies and gaps in the coverage, policy exhaustions, insolvencies among certain of the insurance carriers, and the nature of the underlying claims for Asbestos Liability asserted against the subsidiaries and the Corporation as reflected in the Corporation’s asbestos claims database, as well as estimated erosion of insurance limits on account of claims against Howden arising out of the Products. In addition to consulting with the Corporation’s outside legal counsel on these insurance matters, the Corporation consulted with a nationally-recognized insurance consulting firm it retained to assist the Corporation with certain policy allocation matters that also are among the several factors considered by the Corporation when analyzing potential recoveries from relevant historical insurance for Asbestos Liabilities. Based upon all of the factors considered by the Corporation, and taking into account the Corporation’s analysis of publicly available information regarding the credit-worthiness of various insurers, the Corporation estimated the probable insurance recoveries for Asbestos Liability and defense costs through 2026. Although the Corporation believes that the assumptions employed in the insurance valuation were reasonable and previously consulted with its outside legal counsel and insurance consultant regarding those assumptions, there are other assumptions that could have been employed that would have resulted in materially lower insurance recovery projections. Based on the analyses described above, the Corporation’s reserve at December 31, 2016 for the total costs, including defense costs, for Asbestos Liability claims pending or projected to be asserted through 2026 was $171,181 of which approximately 70% was attributable to settlement costs for unasserted claims projected to be filed through 2026 and future defense costs. While it is reasonably possible that the Corporation will incur additional charges for Asbestos Liability and defense costs in excess of the amounts currently reserved, the Corporation believes that there is too much uncertainty to provide for reasonable estimation of the number of future claims, the nature of such claims and the cost to resolve them beyond 2026. Accordingly, no reserve has been recorded for any costs that may be incurred after 2026. The Corporation’s receivable at December 31, 2016 for insurance recoveries attributable to the claims for which the Corporation’s Asbestos Liability reserve has been established, including the portion of incurred defense costs covered by the Settlement Agreements in effect through December 31, 2016, and the probable payments and reimbursements relating to the estimated indemnity and defense costs for pending and unasserted future Asbestos Liability claims, was $115,945. The following table summarizes activity relating to insurance recoveries for each of the years ended December 31, 2016 and 2015. 2016 2015 Insurance receivable – asbestos, beginning of the year $ 125,423 $ 140,651 Settlement and defense costs paid by insurance carriers (1) (23,138 ) (15,228 ) Changes in estimated coverage 13,660 0 Insurance receivable – asbestos, end of the year $ 115,945 $ 125,423 (1) Settlement and defense costs paid by insurance carriers for 2016, includes a lump sum cash settlement with an insurance carrier of $9,808. The insurance receivable recorded by the Corporation does not assume any recovery from insolvent carriers and a substantial majority of the insurance recoveries deemed probable was from insurance companies rated A – (excellent) or better by A.M. Best Corporation. There can be no assurance, however, that there will not be further insolvencies among the relevant insurance carriers, or that the assumed percentage recoveries for certain carriers will prove correct. The difference between insurance recoveries and projected costs is not due to exhaustion of all insurance coverage for Asbestos Liability. The Corporation and the subsidiaries have substantial additional insurance coverage which the Corporation expects to be available for Asbestos Liability claims and defense costs that the subsidiaries and it may incur after 2026. However, this insurance coverage also can be expected to have gaps creating significant shortfalls of insurance recoveries against claims expense, which could be material in future years. The amounts recorded by the Corporation for Asbestos Liabilities and insurance receivables rely on assumptions that are based on currently known facts and strategy. The Corporation’s actual expenses or insurance recoveries could be significantly higher or lower than those recorded if assumptions used in the Corporation’s or HR&A’s calculations vary significantly from actual results. Key variables in these assumptions are identified above and include the number and type of new claims to be filed each year, the average cost of disposing of each such new claim, average annual defense costs, compliance by relevant parties with the terms of the Settlement Agreements, the resolution of remaining coverage issues with insurance carriers, and the solvency risk with respect to the relevant insurance carriers. Other factors that may affect the Corporation’s Asbestos Liability and ability to recover under its insurance policies include uncertainties surrounding the litigation process from jurisdiction to jurisdiction and from case to case, reforms that may be made by state and federal courts, and the passage of state or federal tort reform legislation. The Corporation intends to evaluate its estimated Asbestos Liability and related insurance receivables as well as the underlying assumptions on a regular basis to determine whether any adjustments to the estimates are required. Due to the uncertainties surrounding asbestos litigation and insurance, these regular reviews may result in the Corporation incurring future charges; however, the Corporation is currently unable to estimate such future charges. Adjustments, if any, to the Corporation’s estimate of its recorded Asbestos Liability and/or insurance receivables could be material to operating results for the periods in which the adjustments to the liability or receivable are recorded, and to the Corporation’s liquidity and consolidated financial position.

Environmental Matters

Environmental Matters	12 Months Ended
	Dec. 31, 2016
Environmental Remediation Obligations [Abstract]
Environmental Matters	NOTE 20 – ENVIRONMENTAL MATTERS: The Corporation is currently performing certain remedial actions in connection with the sale of real estate previously owned and periodically incurs costs to maintain, compliance with environmental laws and regulations. Environmental exposures are difficult to assess and estimate for numerous reasons, including lack of reliable data, the multiplicity of possible solutions, the years of remedial and monitoring activity required, and identification of new sites. In the opinion of management, the potential liability for all environmental compliance measures of approximately $2,457 at December 31, 2016 is considered adequate based on information known to date.

Business Segments

Business Segments	12 Months Ended
	Dec. 31, 2016
Segment Reporting [Abstract]
Business Segments	NOTE 21 – BUSINESS SEGMENTS: The Corporation organizes its business into two operating segments—Forged and Cast Engineered Products and Air and Liquid Processing. Summarized financial information concerning the Corporation’s reportable segments is shown in the following tables. Corporate assets included under Identifiable Assets represent primarily cash and cash equivalents and other items not allocated to reportable segments. Long-lived assets exclude deferred income tax assets. Corporate costs are comprised of operating costs of the corporate office and other costs not allocated to the segments. The segment information for the Forged and Cast Engineered Products for 2016 includes information for Åkers and ASW as of December 31, 2016 and from the date of acquisition. Effective May 1, 2015, the Corporation completed an internal reorganization of its “back office” functions which resulted in certain employees of the segments becoming employees of the Corporation and associated costs (approximately $2,400 and $1,600 for the years ended December 31, 2016 and 2015, respectively) being recorded as “other expense, including corporate costs” in the following table. The accounting policies are the same as those described in Note 1. Net Sales (Loss) Income Before Income Taxes and Equity Losses in Chinese Joint Venture 2016 2015 2014 2016 2015 2014 Forged and Cast Engineered Products (1) $ 247,652 $ 152,267 $ 179,388 $ (42,878 ) $ (3,444 ) $ 4,380 Air and Liquid Processing (1) 84,214 86,213 93,470 5,123 23,166 4,222 Total Reportable Segments 331,866 238,480 272,858 (37,755 ) 19,722 8,602 Corporate costs, including other income (expense) (19,765 ) (15,202 ) (9,494 ) $ 331,866 $ 238,480 $ 272,858 $ (57,520 ) $ 4,520 $ (892 ) Capital Expenditures Depreciation and Identifiable Assets (2) 2016 2015 2014 2016 2015 2014 2016 2015 2014 Forged and Cast Engineered Products $ 9,440 $ 8,608 $ 12,884 $ 19,166 $ 10,468 $ 10,303 $ 348,331 $ 228,718 $ 260,384 Air and Liquid Processing 385 494 356 1,183 1,262 1,444 173,017 183,024 197,518 Corporate 741 305 69 114 57 71 44,541 94,414 78,507 $ 10,566 $ 9,407 $ 13,309 $ 20,463 $ 11,787 $ 11,818 $ 565,889 $ 506,156 $ 536,409 Net Sales (3) Long-Lived Assets (4) (Loss) Income Before Income Geographic Areas: 2016 2015 2014 2016 2015 2014 2016 2015 2014 United States $ 159,531 $ 126,417 $ 143,493 $ 206,460 $ 236,707 $ 252,739 $ (25,906 ) $ 5,855 $ (1,471 ) Foreign 172,335 112,063 129,365 133,141 29,198 31,359 (31,614 ) (1,335 ) 579 $ 331,866 $ 238,480 $ 272,858 $ 339,601 $ 265,905 $ 284,098 $ (57,520 ) $ 4,520 $ (892 ) Net Sales by Product Line (5) 2016 2015 2014 Forged and cast engineered products $ 247,652 $ 152,267 $ 179,388 Heat exchange coils 28,139 32,745 39,109 Centrifugal pumps 36,359 33,120 32,983 Air handling systems 19,716 20,348 21,378 $ 331,866 $ 238,480 $ 272,858 (1) Income (loss) before income taxes and equity losses in Chinese Joint Venture for the Forged and Cast Engineered Products segment includes a pre-tax charge of $26,676 principally for the write off of goodwill associated with the Forged and Cast Engineered Products reporting unit deemed to be impaired. Income (loss) before income taxes and equity losses in Chinese Joint Venture for the Air and Liquid Processing segment for 2016 includes pre-tax charge of $4,565 for estimated costs of asbestos-related litigation through 2026 net of estimated insurance recoveries and a settlement with an insurance carrier for an amount greater than originally estimated, 2015 includes pre-tax asbestos-related proceeds of $14,333 received from two insurance carriers in rehabilitation, and 2014 includes a pre-tax charge of $4,487 for estimated costs of asbestos-related litigation through 2024 net of estimated insurance recoveries. (2) Identifiable assets for the Forged and Cast Engineered Products segment include investments in joint ventures of $2,019, $3,097 and $3,914 at December 31, 2016, 2015 and 2014, respectively. The change in the identifiable assets of the Air and Liquid Processing segment relates primarily to the movement in asbestos-related insurance receivables, the balances of which equaled $115,945, $125,423 and $140,651 at December 31, 2016, 2015 and 2014, respectively. (3) Net sales are attributed to countries based on location of the customer. Sales to individual countries were less than 10% of consolidated net sales each of the years. (4) Foreign long-lived assets represent primarily investments in joint ventures of $2,019, $3,097 and $3,914 at December 31, 2016, 2015 and 2014, respectively, and assets of the U.K. and Åkers operations. Long-lived assets of the U.S. include noncurrent asbestos-related insurance receivables of $102,945, $108,423 and $123,651 for 2016, 2015 and 2014, respectively. (5) For the Forged and Cast Engineered Products segment, two customers accounted for 24%, 33% and 29% of its net sales for 2016, 2015 and 2014, respectively. For the Air and Liquid Processing segment, one customer accounted for 10% of its net sales for 2016 and no customers exceeded 10% of net sales for 2015 or 2014. One customer accounted for 11% of the Corporation’s consolidated sales in 2016.

Subsequent Events

Subsequent Events	12 Months Ended
	Dec. 31, 2016
Subsequent Events [Abstract]
Subsequent Events	NOTE 22 – SUBSEQUENT EVENTS: On March 2, 2017, the Corporation amended its Revolving Credit and Security Agreement to add ASW and Åkers AB as borrowers, to reduce the European sublimit from $25,000 to $15,000 and add a Canadian sublimit of $15,000. In addition, the Corporation paid $7,596 to retire the outstanding balances of the ASW credit facility and term loan, including interest, fees and early termination costs.

Quarterly Information - Unaudit

Quarterly Information - Unaudited	12 Months Ended
	Dec. 31, 2016
Quarterly Financial Information Disclosure [Abstract]
Quarterly Information - Unaudited	QUARTERLY INFORMATION – UNAUDITED The quarterly information includes the results of operations of Åkers from March 3, 2016 and ASW from November 1, 2016, their respective dates of acquisition. Accordingly, the quarterly information for the second, third and fourth quarters of 2016 is not fully comparable to earlier quarters. (in thousands, except per share amounts) First Quarter Second Quarter Third Quarter Fourth Quarter 2016 Net sales $ 63,578 $ 93,301 $ 82,861 $ 92,126 Gross profit (a) 12,473 15,849 15,594 11,454 Net (loss) income attributable to Ampco-Pittsburgh (b) (2,890 ) (6,486 ) (27,382 ) (43,062 ) Net (loss) income per common share attributable to Ampco-Pittsburgh: Basic (b) (0.26 ) (0.53 ) (2.23 ) (3.51 ) Diluted (b) (0.26 ) (0.53 ) (2.23 ) (3.51 ) Comprehensive (loss) income attributable to Ampco-Pittsburgh (c) (1,501 ) (10,739 ) (22,894 ) (47,972 ) 2015 Net sales $ 65,087 $ 59,973 $ 58,094 $ 55,326 Gross profit (a) 13,043 11,776 9,439 8,131 Net income (loss) attributable to Ampco-Pittsburgh (d) 72 (520 ) (1,511 ) 3,332 Net income (loss) per common share attributable to Ampco-Pittsburgh: Basic (d) 0.01 (0.05 ) (0.14 ) 0.32 Diluted (d) 0.01 (0.05 ) (0.14 ) 0.32 Comprehensive income (loss) attributable to Ampco-Pittsburgh (e) 3,692 2,789 (2,250 ) 8,296 (a) Gross profit excludes depreciation and amortization. (b) The second, third and fourth quarters of 2016 include valuation allowances of $1,419, $26,903 and $2,083, respectively, to recognize existing net deferred income tax assets to their estimated net realizable value. Fourth quarter of 2016 also includes an after-tax charge of $4,565 or $0.38 per common share for estimated costs of asbestos-related litigation through 2026 net of estimated insurance recoveries and a settlement with an insurance carrier for an amount greater than originally estimated, and an after-tax charge of $26,676 or $2.23 per common share primarily for the write off of goodwill in the Forged and Cast Engineered Products reporting unit deemed to be impaired. (c) Third quarter of 2016 includes an adjustment to recognize the effect of a plan amendment to one of its other postretirement benefit plans of $4,762. No income tax benefit was recognized due to the Corporation having a valuation allowance recorded against the deferred income tax assets for the jurisdiction affected by the plan amendment. (d) Fourth quarter of 2015 includes an after-tax credit of $9,316 or $0.89 per common share for the net benefit of proceeds received from two insurance carriers in rehabilitation. (e) First quarter of 2015 includes a net-of-tax adjustment to recognize the effect of a plan amendment to the other postretirement benefit plan of $4,163. Fourth quarter of 2015 includes a net-of-tax adjustment to reflect the funded status of the various pension and other postretirement benefit plans of $5,231.

Valuation and Qualifying Accoun

Valuation and Qualifying Accounts	12 Months Ended
	Dec. 31, 2016
Valuation and Qualifying Accounts [Abstract]
Valuation and Qualifying Accounts	SCHEDULE II Valuation and Qualifying Accounts For the Years Ended December 31, 2016, 2015 and 2014 (in thousands) Additions Description Balance at Charged to Charged to Deductions Other (4) Balance at Period Year ended December 31, 2016 Allowance for doubtful accounts $ 983 $ 1,598 $ 0 $ (353 ) $ 0 $ 2,228 Valuation allowance against gross deferred income tax assets $ 2,481 $ 0 $ 30,405 (2) $ 0 $ 12,563 $ 45,449 Year ended December 31, 2015 Allowance for doubtful accounts $ 1,374 $ 408 $ (762 ) (1) $ (25 ) $ (12 ) $ 983 Valuation allowance against gross deferred income tax assets $ 3,254 $ 0 $ (715 ) (2) $ 0 $ (58 ) $ 2,481 Year ended December 31, 2014 Allowance for doubtful accounts $ 551 $ 1,381 $ 0 $ (531 ) $ (27 ) $ 1,374 Valuation allowance against gross deferred income tax assets $ 2,639 $ 0 $ 721 (2) $ (33 ) (3) $ (73 ) $ 3,254 (1) Represents collection of receivables previously provided for in the allowance for doubtful accounts. (2) Represents valuation allowances established for deferred income tax assets since it is more likely than not that the assets will not be realized. (3) Reduction in valuation allowances reflects primarily changes in the amount of deferred income tax assets expected to be realized, resulting in credit to the income tax provision in the consolidated statements of operations. (4) Represents primarily valuation allowances recorded at the date of the opening balance sheet for ASW for the year ended 2016 and impact from changes in foreign currency exchange rates and income tax rates for the years ended 2015 and 2014.

Summary of Significant Accoun34

Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2016
Accounting Policies [Abstract]
Consolidation	Consolidation The accompanying consolidated financial statements include the assets, liabilities, revenues and expenses of all majority owned subsidiaries and joint ventures over which the Corporation exercises control and, when applicable, entities for which the Corporation has a controlling financial interest or is the primary beneficiary. Investments in joint ventures where the Corporation owns 20% to 50% of the voting stock and has the ability to exercise significant influence over the operating and financial policies of the joint venture are accounted for using the equity method of accounting. Investments in joint ventures whereby the Corporation does not have the ability to exercise significant influence over the operating and financial policies of the joint venture are accounted for using the cost method of accounting. Investments in joint ventures are reviewed for impairment whenever events or circumstances indicate the carrying amount of the investment may not be recoverable. If the estimated fair value of the investment is less than the carrying amount and such decline is determined to be “other than temporary,” then the investment may not be fully recoverable potentially resulting in a write-down of the investment value. Intercompany accounts and transactions are eliminated.
Cash and Cash Equivalents	Cash and Cash Equivalents Securities with purchased original maturities of three months or less are considered to be cash equivalents. The Corporation maintains cash and cash equivalents at various financial institutions which may exceed federally insured amounts.
Inventories	Inventories Inventories are valued at the lower of cost or market. Cost includes the cost of raw materials, direct labor and overhead for those items manufactured but not yet sold or for which title has not yet transferred. Fixed production overhead is allocated to inventories based on normal capacity of the production facilities. In periods of abnormally high production, the amount of fixed overhead allocated to each unit of production is decreased so that inventories are not measured above cost. The amount of fixed overhead allocated to inventories is not increased as a consequence of abnormally low production or idle plant. Costs for abnormal amounts of spoilage, handling costs and freight costs are charged to expense when incurred. Cost of domestic raw materials, work-in-process and finished goods inventories is primarily determined by the last-in, first-out (LIFO) method. Cost of domestic supplies and foreign inventories is determined primarily by the first-in, first-out (FIFO) method.
Property, Plant and Equipment	Property, Plant and Equipment Property, plant and equipment purchased new is recorded at cost with depreciation computed using the straight-line method over the following estimated useful lives: land improvements – 15 to 20 years, buildings – 25 to 50 years and machinery and equipment – 3 to 25 years. Property, plant and equipment acquired as part of a business combination is recorded at its estimated fair value with depreciation computed using the straight-line method over the estimated remaining useful lives based in part on third party valuations. Expenditures that extend economic useful lives are capitalized. Routine maintenance is charged to expense. Gains or losses are recognized on retirements or disposals. Property, plant and equipment are reviewed for impairment at least annually, or whenever events or changes in circumstances indicate the carrying amount of the asset may not be recoverable. If the undiscounted cash flows generated from the use and eventual disposition of the assets are less than their carrying value, then the asset value may not be fully recoverable potentially resulting in a write-down of the asset value. Estimates of future cash flows are based on expected market conditions over the remaining useful life of the primary asset(s). In addition, the remaining depreciation period for the impaired asset would be reassessed and, if necessary, revised. Proceeds from government grants are recorded as a reduction in the purchase price of the underlying assets and amortized against depreciation over the lives of the related assets.
Intangible Assets	Intangible Assets Intangible assets primarily consist of developed technology, customer relationships and trade name. Intangible assets with definite lives are amortized using the straight-line method over their estimated useful life, which is determined by identifying the period over which most of the cash flows are expected to be generated. Additionally, intangible assets, both definite and indefinite lived, are reviewed for impairment at least annually, as of October 1, or whenever events or changes in circumstances indicate the carrying amount of the asset may not be recoverable. If the undiscounted cash flows attributable to the assets are less than their carrying value, then the asset value may not be fully recoverable potentially resulting in a write-down of the asset value. Also, if the estimate of an intangible asset’s remaining useful life changes, the remaining carrying value of the intangible asset will be amortized prospectively over the revised remaining useful life.
Goodwill	Goodwill Goodwill represents the consideration paid in a business combination in excess of the values assigned to the net assets of the acquired entity. Goodwill is not amortized but is tested for impairment at the reporting unit level annually, as of October 1, or whenever events or changes in circumstances indicate the carrying amount may not be recoverable. Goodwill is evaluated for impairment either qualitatively or quantitatively using a two-step approach. Under step one, the fair value of the reporting unit is determined using both a market and income approach. If the fair value of the reporting unit is less than the carrying value of the reporting unit, then goodwill may be impaired causing the second step of the analysis to be completed. Under step two, the fair value of the reporting is allocated to the assets and liabilities of the reporting unit. The unallocated fair value (“implied goodwill”), if any, is compared to the recorded value of goodwill. If the implied goodwill exceeds the recorded value of goodwill, then goodwill is deemed not to be impaired. If the implied goodwill is less than the recorded value of goodwill, then goodwill is deemed to be impaired by the amount that goodwill exceeds implied goodwill. Estimating the fair value of a reporting unit requires the use of significant unobservable inputs, representative of a Level 3 fair value measurement, including market growth and market share, sales volumes and prices, costs to produce, discount rate and estimated capital needs. Management considers historical experience and all available information at the time the fair value of the reporting unit is estimated. Assumptions used to estimate future cash flows are subject to a high degree of judgment and complexity.
Debt Issuance Costs	Debt Issuance Costs Debt issuance costs are amortized as interest expense over the scheduled maturity period of the debt. The costs related to our line-of-credit arrangement are amortized over the term of the arrangement, regardless of whether there are any outstanding borrowings. Unamortized debt issuance costs are either recognized as a direct deduction from the carrying amount of the related debt or, if related to a line-of-credit facility, as an other noncurrent asset.
Product Warranty	Product Warranty Provisions for product warranties are recognized at the time the underlying sale is recorded. The provision is based on historical experience as a percentage of sales adjusted for potential claims when a liability is probable and for known claims.
Employee Benefit Plans	Employee Benefit Plans Funded Status If the fair value of the plan assets exceeds the projected benefit obligation, the over-funded projected benefit obligation is recognized as an asset (prepaid pensions) on the consolidated balance sheet. Conversely, if the projected benefit obligation exceeds the fair value of the plan assets, the under-funded projected benefit obligation is recognized as a liability (employee benefit obligations) on the consolidated balance sheet. Gains and losses arising from the difference between actuarial assumptions and actual experience and unamortized prior service costs are recorded as a separate component of accumulated other comprehensive loss. Net Periodic Pension and Other Postretirement Costs Net periodic pension and other postretirement costs includes service cost, interest cost, expected rate of return on the market-related value of plan assets, amortization of prior service costs and recognized actuarial gains or losses. When actuarial gains or losses exceed 10% of the greater of the projected benefit obligation or the market-related value of plan assets, they are amortized to net periodic pension and other postretirement costs over the average remaining service period of employees expected to receive benefits under the plan. When the actuarial gains or losses are less than 10% of the greater of the projected benefit obligation or the market-related value of plan assets, they are included in net periodic pension and other postretirement costs indirectly as a result of lower/higher interest costs arising from a decrease/increase in the projected benefit obligation. The market-related value of plan assets is determined using a five-year moving average which recognizes 20% of unrealized gains and losses each year.
Other Comprehensive Income (Loss)	Other Comprehensive Income (Loss) Other comprehensive income (loss) includes changes in assets and liabilities from non-owner sources including foreign currency translation adjustments, unamortized prior service costs and unrecognized actuarial gains and losses associated with employee benefit plans, unrealized holding gains and losses on securities designated as available for sale, and changes in the fair value of derivatives designated and effective as cash flow hedges. Certain components of other comprehensive income (loss) are presented net of income tax. Foreign currency translation adjustments exclude the effect of income tax since earnings of non-U.S. subsidiaries are deemed to be reinvested for an indefinite period of time. Reclassification adjustments are amounts which are realized during the year and, accordingly, are deducted from other comprehensive income (loss) in the period in which they are included in net income (loss) or when a transaction no longer qualifies as a cash flow hedge. Foreign currency translation adjustments are included in net income (loss) upon sale or upon complete or substantially complete liquidation of an investment in a foreign entity. With respect to employee benefit plans, unamortized prior service costs are included in net income (loss) either immediately upon curtailment of the employee benefit plan or over the average remaining service period of employees expected to receive benefits and unrecognized actuarial gains and losses are included in net income (loss) indirectly as a result of lower/higher interest costs arising from a decrease/increase in the projected benefit obligation. Unrealized holding gains and losses on securities are included in net income (loss) when the underlying security is sold. Changes in the fair value of derivatives are included in net income (loss) when the projected sale occurs or, if a foreign currency purchase contract, over the estimated useful life of the underlying asset.
Foreign Currency Translation	Foreign Currency Translation Assets and liabilities of the Corporation’s foreign operations are translated at year-end exchange rates and the statements of operations are translated at the average exchange rates for the year. Gains or losses resulting from translating foreign currency financial statements are accumulated as a separate component of accumulated other comprehensive loss until the entity is sold or substantially liquidated.
Revenue Recognition	Revenue Recognition Revenue from sales is recognized when persuasive evidence of an arrangement exists, delivery has occurred, the sales price is fixed or determinable, and collectability is reasonably assured. Persuasive evidence of an arrangement identifies the final understanding between the parties as to the specific nature and terms of the agreed-upon transaction that creates enforceable obligations. It can be in the form of an executed purchase order from the customer, sales agreement issued by the Corporation or a similar arrangement deemed to be normal and customary business practice for that particular customer or class of customer (collectively, a sales agreement). Delivery and performance is considered to have occurred when the customer has taken title and assumed the risks and rewards of ownership of the product. Typically, this occurs when the product is shipped to the customer (i.e., FOB shipping point), delivered to the customer (i.e., FOB destination), or, for foreign sales, in accordance with trading guidelines known as Incoterms. Incoterms are standard trade definitions used in international contracts and are developed, maintained and promoted by the ICC Commission on Commercial Law and Practice. The sales price required to be paid by the customer is fixed or determinable from the sales agreement. It is not subject to refund or adjustment except for a variable-index surcharge provision which increases or decreases, as applicable, the selling price of a rolling mill roll for corresponding changes in the published index cost of certain raw materials. The variable-index surcharge is recognized as revenue when the corresponding revenue for the inventory is recognized. Likelihood of collectability is assessed prior to acceptance of an order. There are no customer-acceptance provisions other than customer inspection and testing prior to shipment. Post-shipment obligations are insignificant. Amounts billed to the customer for shipping and handling are recorded within net sales and the related costs are recorded within costs of products sold (excluding depreciation and amortization). Amounts billed for taxes assessed by various government authorities (e.g., sales tax, value-added tax, etc.) are excluded from the determination of net income (loss) and instead are recorded as a liability until remitted to the government authority.
Stock-Based Compensation	Stock-Based Compensation Stock-based compensation, such as stock options, restricted stock units and performance shares, is recognized over the vesting period based upon the fair value of the award at the date of grant. For stock options, the fair value is determined by the BlackScholes option pricing model and is expensed over the vesting period of three years. For restricted stock units, the fair value is equal to the closing price of the Corporation’s common stock on the New York Stock Exchange (“NYSE”) on the date of grant and is expensed over the vesting period of three years. For performance share awards that vest subject to a performance condition, the fair value is equal to the closing price of the Corporation’s stock on the NYSE on the date of grant. For performance share awards that vest subject to a market condition, fair value is determined using a Monte Carlo simulation model. The fair value of performance share awards is expensed over the performance period when it is probable that the performance condition will be achieved.
Derivative Instruments	Derivative Instruments Derivative instruments which include forward exchange (for foreign currency sales and purchases) and futures contracts are recorded on the consolidated balance sheet as either an asset or a liability measured at their fair value. The accounting for changes in the fair value of a derivative depends on the use of the derivative. To the extent that a derivative is designated and effective as a cash flow hedge of an exposure to future changes in value, the change in the fair value of the derivative is deferred in accumulated other comprehensive loss. Any portion considered to be ineffective, including that arising from the unlikelihood of an anticipated transaction to occur, is reported as a component of earnings (other income/expense) immediately. Upon occurrence of the anticipated sale, the foreign currency sales contract designated and effective as a cash flow hedge is de-designated as a fair value hedge and the change in fair value previously deferred in accumulated other comprehensive loss is reclassified to earnings (net sales) with subsequent changes in fair value recorded as a component of earnings (other income/expense). Upon occurrence of the anticipated purchase, the foreign currency purchase contract is settled and the change in fair value deferred in accumulated other comprehensive loss is reclassified to earnings (depreciation and amortization expense) over the life of the underlying assets. Upon settlement of a futures contract, the change in fair value deferred in accumulated other comprehensive loss is reclassified to earnings (costs of products sold, excluding depreciation and amortization) when the corresponding inventory is sold and revenue is recognized. To the extent that a derivative is designated and effective as a hedge of an exposure to changes in fair value, the change in the derivative’s fair value will be offset in the statement of operations by the change in the fair value of the item being hedged and is recorded as a component of earnings (other income/expense). Cash flows associated with the derivative instruments are recorded as a component of operating activities on the consolidated statement of cash flows. The Corporation does not enter into derivative transactions for speculative purposes and, therefore, holds no derivative instruments for trading purposes.
Fair Value	Fair Value Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants as of the measurement date. A hierarchy of inputs is used to determine fair value measurements with three levels. Level 1 inputs are quoted prices in active markets for identical assets or liabilities and are considered the most reliable evidence of fair value. Level 2 inputs are observable prices that are not quoted on active exchanges. Level 3 inputs are unobservable inputs used for measuring the fair value of assets or liabilities.
Legal Costs	Legal Costs Legal costs expected to be incurred in connection with loss contingencies are accrued when such costs are probable and estimable.
Income Taxes	Income Taxes Income taxes are recognized during the year in which transactions enter into the determination of financial statement income. Deferred income tax assets and liabilities are recognized for the future tax consequences of temporary differences between the book carrying amount and the tax basis of assets and liabilities including net operating loss carryforwards. Unremitted earnings of the Corporation’s non-U.S. subsidiaries and affiliates are deemed to be permanently reinvested and, accordingly, no deferred income tax liability is recorded. A valuation allowance is provided against a deferred income tax asset when it is “more likely than not” the asset will not be realized. Similarly, if a determination is made that it is “more likely than not” the deferred income tax asset will be realized, the related valuation allowance would be reduced and a benefit to earnings would be recorded. Penalties and interest are recognized as a component of the income tax provision. Tax benefits are recognized in the financial statements for tax positions taken or expected to be taken in a tax return when it is “more likely than not” that the tax authorities will sustain the tax position solely on the basis of the position’s technical merits. Consideration is given primarily to legislation and statutes, legislative intent, regulations, rulings and case law as well as their applicability to the facts and circumstances of the tax position when assessing the sustainability of the tax position. In the event a tax position no longer meets the “more likely than not” criteria, the tax benefit is reversed by recognizing a liability and recording a charge to earnings. Conversely, if a tax position subsequently meets the “more likely than not” criteria, a tax benefit would be recognized by reducing the liability and recording a credit to earnings.
Earnings Per Common Share	Earnings Per Common Share Basic earnings per common share is computed by dividing net income (loss) by the weighted average number of common shares outstanding for the period. The computation of diluted earnings per common share is similar to basic earnings per common share except that the denominator is increased to include the dilutive effect of the net additional common shares that would have been outstanding assuming exercise of outstanding stock awards, calculated using the treasury stock method. The computation of diluted earnings per share would not assume the exercise of an outstanding stock award if the effect on earnings per common share would be antidilutive. Similarly, the computation of diluted earnings per share would not assume the exercise of outstanding stock awards if the Corporation incurred a net loss since the effect on earnings per common share would be antidilutive. The weighted average number of common shares outstanding assuming exercise of dilutive stock awards was 11,951,181 for 2016, 10,447,066 for 2015 and 10,404,744 for 2014. Weighted-average outstanding stock awards excluded from the diluted earnings per common share calculation, since the effect would have been antidilutive, were 1,163,396 for 2016, 1,138,287 for 2015 and 1,242,545 for 2014.
Recently Implemented Accounting Pronouncements	Recently Implemented Accounting Pronouncements In September 2015, the Financial Accounting Standards Board (“FASB”) issued ASU 2015-16, Simplifying the Accounting for Measurement-Period Adjustments In April 2015, the FASB issued ASU 2015-03, Simplifying the Presentation of Debt Issuance Costs Presentation and Subsequent Measurement of Debt Issuance Costs Associated with Line-of-Credit Arrangements
Recently Issued Accounting Pronouncements	Recently Issued Accounting Pronouncements In August 2016, the FASB issued ASU 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments In May 2016, April 2016, March 2016 and May 2014, the FASB issued ASUs 2016-12, 2016-10, 2016-08 and 2014-09, respectively, Revenue from Contracts with Customers In March 2016, the FASB issued ASU 2016-09, Improvements to Employee Share-Based Payment Accounting In February 2016, the FASB issued ASU 2016-02, Leases In July 2015, the FASB issued ASU 2015-11, Simplifying the Measurement of Inventory

Acquisition (Tables)

Acquisition (Tables)	12 Months Ended
	Dec. 31, 2016
Summary of Fair Value of Assets Acquired and Liabilities Assumed	The resulting fair value of assets acquired and liabilities assumed as of the date of acquisition is as follows: Current assets (excluding inventories) $ 41,703 Inventories 30,332 Property, plant and equipment 71,871 Intangible assets 11,784 Other noncurrent assets 8,068 Current liabilities (71,690 ) Noncurrent liabilities (43,153 ) Net assets acquired 48,915 Noncontrolling interest (2,019 ) Goodwill 27,259 Base purchase price $ 74,155
Summary of Pro Forma Financial Information	The following pro forma financial information is presented for informational purposes only and is not necessarily indicative of the results of operations that would have been achieved had the acquisition occurred at the beginning of 2015: Year Ended December 31, 2016 2015 Net sales $ 393,243 $ 440,265 Loss before income taxes (includes noncontrolling interest) $ (63,498 ) $ (11,945 ) Net loss attributable to Ampco-Pittsburgh $ (85,778 ) $ (24,740 ) Net loss per common share (basic) attributable to Ampco-Pittsburgh $ (6.94 ) $ (2.03 )
ASW Steel Inc [Member]
Summary of Fair Value of Assets Acquired and Liabilities Assumed	The estimated fair value of assets acquired and liabilities assumed as of the date of the acquisition is summarized below. Current assets (excluding inventories) $ 6,525 Inventories 6,956 Property, plant and equipment 10,310 Current liabilities (10,675 ) Outstanding indebtedness (9,616 ) Base purchase price $ 3,500

Investments in Joint Ventures (

Investments in Joint Ventures (Tables)	12 Months Ended
	Dec. 31, 2016
Equity Method Investments and Joint Ventures [Abstract]
Assets, Liabilities and Shareholders' Equity of Joint Venture	2016 2015 Assets: Current assets (includes receivables from related parties of $187 and $935, respectively) $ 7,856 $ 8,332 Noncurrent assets 16,080 28,993 $ 23,936 $ 37,325 Liabilities and Shareholders’ Equity: Current liabilities (includes liabilities to related parties of $3,651 and $17,230, respectively) $ 4,551 $ 17,455 Noncurrent liabilities (includes liabilities to related parties of $813 and $0, respectively) 813 0 Shareholders’ equity 18,572 19,870 $ 23,936 $ 37,325

Inventories (Tables)

Inventories (Tables)	12 Months Ended
	Dec. 31, 2016
Inventory Disclosure [Abstract]
Schedule of Inventories	2016 2015 Raw materials $ 23,964 $ 18,314 Work-in-progress 29,198 21,583 Finished goods 20,046 9,897 Supplies 10,371 9,940 $ 83,579 $ 59,734

Property, Plant and Equipment (

Property, Plant and Equipment (Tables)	12 Months Ended
	Dec. 31, 2016
Property, Plant and Equipment [Abstract]
Schedule of Property, Plant and Equipment	2016 2015 Land and land improvements $ 11,747 $ 5,223 Buildings 66,017 44,570 Machinery and equipment 323,684 266,358 Construction-in-process 2,595 3,566 Other 7,495 7,774 411,538 327,491 Accumulated depreciation and amortization (197,130 ) (180,578 ) $ 214,408 $ 146,913

Intangible Assets (Tables)

Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2016
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Intangible Assets	2016 2015 Customer relationships $ 6,244 $ 1,245 Developed technology 4,248 0 Trade name 2,537 0 13,029 1,245 Accumulated amortization (1,428 ) (52 ) $ 11,601 $ 1,193
Summary of Changes in Intangible Assets	The following summarizes changes in intangible assets for the year ended December 31: 2016 2015 Balance at the beginning of the year $ 1,193 $ 0 Changes in intangible assets 11,784 1,245 Amortization of intangible assets (1,106 ) (52 ) Other, primarily impact from changes in foreign currency exchange rates (270 ) 0 Balance at the end of the year $ 11,601 $ 1,193

Other Current Liabilities (Tabl

Other Current Liabilities (Tables)	12 Months Ended
	Dec. 31, 2016
Other Liabilities Disclosure [Abstract]
Schedule of Other Current Liabilities	2016 2015 Customer-related liabilities $ 21,564 $ 12,195 Accrued interest payable 2,274 3 Income taxes payable 0 3,256 Accrued sales commissions 1,693 1,506 Other 16,666 6,920 $ 42,197 $ 23,880
Schedule of Changes in Liability for Product Warranty Claims	The following summarizes changes in the liability for product warranty claims for the year ended December 31: 2016 2015 2014 Balance at the beginning of the year $ 6,358 $ 6,672 $ 6,899 Acquisitions – opening balance sheet liability for warranty claims 7,130 0 0 Satisfaction of warranty claims (4,297 ) (2,452 ) (2,335 ) Provision for warranty claims 3,282 2,293 2,300 Other, primarily impact from changes in foreign currency exchange rates (952 ) (155 ) (192 ) Balance at the end of the year $ 11,521 $ 6,358 $ 6,672

Borrowing Arrangements (Tables)

Borrowing Arrangements (Tables)	12 Months Ended
	Dec. 31, 2016
Debt Disclosure [Abstract]
Schedule of Outstanding Borrowings	Outstanding borrowings of the Corporation as of December 31, 2016 and 2015 consisted of the following: 2016 2015 Industrial Revenue Bonds $ 13,311 $ 13,311 Promissory notes (and interest) 23,844 0 Minority shareholder loan 4,990 0 Credit facility 7,146 0 Term loan 762 0 Capital leases 2,161 0 52,214 13,311 Current portion (26,825 ) (13,311 ) $ 25,389 $ 0

Pension and Other Postretirem42

Pension and Other Postretirement Benefits (Tables)	12 Months Ended
	Dec. 31, 2016
Compensation and Retirement Disclosure [Abstract]
Reconciliation of Projected Benefit Obligations (PBO), Plan Assets, the Funded Status of the Plans and the Amounts Recognized in the Consolidated Balance Sheets	The following provides a reconciliation of projected benefit obligations (“PBO”), plan assets, the funded status of the plans and the amounts recognized in the consolidated balance sheets for the Corporation’s defined benefit plans calculated using a measurement date as of the end of the respective years. U.S. Pension Benefits (a) Foreign Pension Other Postretirement 2016 2015 2016 2015 2016 2015 Change in projected benefit obligations: PBO at January 1 $ 181,803 $ 205,399 $ 63,750 $ 70,523 $ 8,117 $ 13,739 Åkers acquisition – PBO at March 3 68,081 0 5,393 0 17,467 0 Service cost 1,714 2,743 314 0 504 384 Interest cost 9,977 7,990 2,250 2,394 722 474 Plan amendments 0 447 0 0 (4,762 ) (4,437 ) Plan settlements (b) (2,739 ) (5,494 ) 0 0 0 0 Plan curtailments (1,181 ) (10,306 ) 0 0 0 0 Foreign currency exchange rate changes 0 0 (11,477 ) (3,413 ) 0 0 Actuarial (gain) loss (160 ) (9,880 ) 8,869 (4,005 ) (1,598 ) (1,433 ) Participant contributions 0 0 0 0 80 79 Benefits paid from plan assets (12,679 ) (8,772 ) (2,189 ) (1,749 ) 0 0 Benefits paid by the Corporation (376 ) (324 ) 0 0 (1,471 ) (689 ) PBO at December 31 $ 244,440 $ 181,803 $ 66,910 $ 63,750 $ 19,059 $ 8,117 Change in plan assets: Fair value of plan assets at January 1 $ 139,376 $ 157,048 $ 49,628 $ 50,533 $ 0 $ 0 Åkers acquisition – fair value of plan assets at March 3 50,108 0 0 0 0 0 Actual return on plan assets 14,656 (3,406 ) 7,859 1,701 0 0 Foreign currency exchange rate changes 0 0 (8,930 ) (2,572 ) 0 0 Corporate contributions 376 324 1,687 1,715 1,391 610 Participant contributions 0 0 0 0 80 79 Plan settlements (b) (2,739 ) (5,494 ) 0 0 0 0 Gross benefits paid (13,055 ) (9,096 ) (2,189 ) (1,749 ) (1,471 ) (689 ) Fair value of plan assets at December 31 $ 188,722 $ 139,376 $ 48,055 $ 49,628 $ 0 $ 0 Funded status of the plans: Fair value of plan assets $ 188,722 $ 139,376 $ 48,055 $ 49,628 $ 0 $ 0 Less benefit obligations 244,440 181,803 66,910 63,750 19,059 8,117 Funded status at December 31 $ (55,718 ) $ (42,427 ) $ (18,855 ) $ (14,122 ) $ (19,059 ) $ (8,117 ) (a) Includes the nonqualified defined benefit pension plan. (b) Represents lump sum payments. U.S. Pension Foreign Pension Other Postretirement 2016 2015 2016 2015 2016 2015 Recognized in the balance sheets: Employee benefit obligations: Accrued payrolls and employee benefits (a) $ (409 ) $ (352 ) $ 0 $ 0 $ (1,276 ) $ (612 ) Employee benefit obligations (b) (55,309 ) (42,075 ) (18,855 ) (14,122 ) (17,783 ) (7,505 ) $ (55,718 ) $ (42,427 ) $ (18,855 ) $ (14,122 ) $ (19,059 ) $ (8,117 ) Accumulated other comprehensive loss: (c) Net actuarial loss $ 48,153 $ 53,163 $ 25,547 $ 27,594 $ 936 $ 2,570 Prior service cost 209 237 0 0 (15,581 ) (12,097 ) $ 48,362 $ 53,400 $ 25,547 $ 27,594 $ (14,645 ) $ (9,527 ) (a) Recorded as a current liability in the consolidated balance sheet. (b) Recorded as a noncurrent liability in the consolidated balance sheet. (c) Amounts are pre-tax.
Amounts Included in Accumulated Other Comprehensive Loss to be Recognized over Next Year	Amounts included in accumulated other comprehensive loss as of December 31, 2016 expected to be recognized in net periodic pension and other postretirement costs in 2017 include: U.S. Pension Foreign Pension Other Postretirement Net actuarial loss $ 1,212 $ 790 $ 67 Prior service cost (credit) 52 0 (1,620) $ 1,264 $ 790 $ (1,553)
Summary of Target Asset Allocations and Major Asset Categories	The following summarizes target asset allocations (within +/-5% considered acceptable) and major asset categories. Certain investments are classified differently for target asset allocation purposes and external reporting purposes. In addition, for the legacy plan, the Corporation changed investment managers in December 2016; accordingly, there is temporarily a higher amount in cash and cash equivalents. U.S. Pension Benefits Foreign Pension Benefits Target Percentage of Plan Target Percentage of Plan Dec. 31, 2016 2016 2015 Dec. 31, 2016 2016 2015 Equity Securities 65 % 47 % 58 % 44 % 48 % 46 % Fixed-Income Securities 15 % 21 % 19 % 35 % 34 % 33 % Alternative Investments 15 % 8 % 13 % 21 % 18 % 21 % Other (primarily cash and cash equivalents) 5 % 24 % 10 % 0 % 0 % 0 %
Asset Categories Based on the Nature and Risks of the Plans Assets	Asset categories based on the nature and risks of the U.S. Pension Benefit Plans’ assets as of December 31, 2016 are summarized below. Quoted Prices in Significant Other (Level 2) Significant (Level 3) Total Equity Securities: U.S. Bank & financial services $ 631 $ 0 $ 0 $ 631 Capital goods 75 0 0 75 Chemicals 20 0 0 20 Commercial services 16 0 0 16 Electronics 67 0 0 67 Health care 201 0 0 201 Mutual funds 72,571 0 0 72,571 Oil & gas 87 0 0 87 Retail 101 0 0 101 Technology 188 0 0 188 Transportation 18 0 0 18 Wholesale distribution 16 0 0 16 Other (represents 8 business sectors) 211 0 0 211 International Chemicals 7 0 0 7 Technology 6 0 0 6 Total Equity Securities 74,215 0 0 74,215 Fixed Income Securities: Mutual funds 36,601 0 0 36,601 Total Fixed Income Securities 36,601 0 0 36,601 Alternative Investments: Managed funds (a) 0 0 33,830 33,830 Total Alternative Investments 0 0 33,830 33,830 Other: Money market mutual funds 27,902 0 0 27,902 Commingled funds 0 154 0 154 Other (b) 16,020 0 0 16,020 Total Other 43,922 154 0 44,076 $ 154,738 $ 154 $ 33,830 $ 188,722 (a) Includes approximately 45.9% in equity and equity-like asset securities, 44.5% in alternative investments (real assets, commodities and resources, absolute return funds) and 7.4% in fixed income securities and 2.2% in other, primarily cash and cash equivalents. (b) Includes accrued receivables and pending broker settlements. Asset categories based on the nature and risks of the U.S. Pension Benefit Plan’s assets as of December 31, 2015 are summarized below. Quoted Prices in Significant Other Significant (Level 3) Total Equity Securities: U.S. Capital goods $ 1,531 $ 0 $ 0 $ 1,531 Chemicals 1,811 0 0 1,811 Commercial property 906 0 0 906 Commercial services 925 0 0 925 Common collective trust funds 0 31,291 0 31,291 Electronics 785 0 0 785 Food processing 2,856 0 0 2,856 Health care 1,815 0 0 1,815 Limited partnerships – public equity 4,173 0 0 4,173 Manufacturing 1,536 0 0 1,536 Oil & gas 1,499 0 0 1,499 Retail 706 0 0 706 Technology 1,674 0 0 1,674 Transportation 484 0 0 484 Wholesale distribution 789 0 0 789 Other (represents 13 business sectors) 5,695 0 0 5,695 International Bank & financial services 1,525 0 0 1,525 Common collective trust funds 0 3,078 0 3,078 Engineering & construction 729 0 0 729 Oil & gas 807 0 0 807 Real estate 937 0 0 937 Technology 265 0 0 265 Other (represents 9 business sectors) 2,391 0 0 2,391 Total Equity Securities 33,839 34,369 0 68,208 Fixed-Income Securities: Commingled funds 0 14,697 0 14,697 Preferred (represents 5 business sectors) 6,689 0 0 6,689 Other (represents 4 business sectors) 0 1,280 0 1,280 Total Fixed-Income Securities 6,689 15,977 0 22,666 Alternative Investments: Managed funds (a) 0 0 32,210 32,210 Hedge and absolute return funds 0 0 4,967 4,967 Total Alternative Investments 0 0 37,177 37,177 Other: Mutual funds 1,836 0 0 1,836 Commingled funds 0 1,005 0 1,005 Other (b) 8,484 0 0 8,484 Total Other 10,320 1,005 0 11,325 $ 50,848 $ 51,351 $ 37,177 $ 139,376 (a) Includes approximately 38% in equity and equity-like asset securities, 43% in alternative investments (real assets, commodities and resources, absolute return funds) and 19% in fixed income securities and cash and cash equivalents. (b) Includes accrued receivables and pending broker settlements. Asset categories based on the nature and risks of the Foreign Pension Benefit Plan’s assets as of December 31, 2016 are summarized below. Quoted Prices in Significant Other Significant Total Equity Securities: Commingled Funds (U.K.) $ 0 $ 3,716 $ 0 $ 3,716 Commingled Funds (International) 0 19,146 0 19,146 Total Equity Securities 0 22,862 0 22,862 Fixed-Income Securities: Commingled Funds (U.K.) 0 16,426 0 16,426 Alternative Investments: Hedge and Absolute Return Funds 0 0 8,593 8,593 Cash and cash equivalents 174 0 0 174 $ 174 $ 39,288 $ 8,593 $ 48,055 Asset categories based on the nature and risks of the Foreign Pension Benefit Plan’s assets as of December 31, 2015 are summarized below. Quoted Prices in Significant Other Significant Total Equity Securities: Commingled Funds (U.K.) $ 0 $ 3,697 $ 0 $ 3,697 Commingled Funds (International) 0 18,930 0 18,930 Total Equity Securities 0 22,627 0 22,627 Fixed-Income Securities: Commingled Funds (U.K.) 0 16,298 0 16,298 Alternative Investments: Hedge and Absolute Return Funds 0 0 10,571 10,571 Cash and cash equivalents 132 0 0 132 $ 132 $ 38,925 $ 10,571 $ 49,628
Summary of Changes in the Fair Value of the Level 3 Plan Assets for U.S. and Foreign Pension Plans	The table below sets forth a summary of changes in the fair value of the Level 3 plan assets for U.S. and foreign pension plans for the year ended December 31, 2016. Alternative Investments U.S. Pension Foreign Pension Fair value as of January 1, 2016 $ 4,967 $ 32,210 $ 10,571 Contributions 0 0 0 Withdrawals (4,967 ) 0 0 Realized gains (losses) 0 1,857 0 Change in net unrealized (losses) gains 0 (237 ) (280 ) Other, primarily impact from changes in foreign currency exchange rates 0 0 (1,698 ) Fair value as of December 31, 2016 $ 0 $ 33,830 $ 8,593 The table below sets forth a summary of changes in the fair value of the Level 3 plan assets for U.S. and foreign pension plans for the year ended December 31, 2015. Alternative Investments U.S. Pension Foreign Pension Fair value as of January 1, 2015 $ 8,592 $ 33,602 $ 10,799 Contributions 5,900 0 0 Withdrawals (9,843 ) (2,424) 0 Realized gains (losses) 2,334 (19) 0 Change in net unrealized (losses) gains (2,016 ) 1,051 320 Other, primarily impact from changes in foreign currency exchange rates 0 0 (548 ) Fair value as of December 31, 2015 $ 4,967 $ 32,210 $ 10,571
Net Periodic Pension and Other Postretirement Benefit Costs	Net periodic pension and other postretirement benefit costs include the following components for the year ended December 31: U.S. Pension Foreign Pension Other Postretirement 2016 2015 2014 2016 2015 2014 2016 2015 2014 Service cost $ 1,714 $ 2,743 $ 3,683 $ 314 $ 0 $ 0 $ 504 $ 384 $ 505 Interest cost 9,977 7,990 8,762 2,250 2,394 2,695 722 474 688 Expected return on plan assets (13,424 ) (10,996 ) (10,747 ) (2,461 ) (2,681 ) (3,157 ) 0 0 0 Amortization of: Prior service cost (credit) 44 371 854 0 0 0 (1,277 ) (672 ) (441 ) Actuarial loss 3,324 5,440 4,183 670 845 599 36 26 104 Curtailment (gain) loss (887 ) 1,303 0 0 0 0 0 0 0 $ 748 $ 6,851 $ 6,735 $ 773 $ 558 $ 137 $ (15 ) $ 212 $ 856
Discount Rates and Weighted-Average Wage Increases Used to Determine the Benefit Obligations	The discount rates and weighted-average wage increases used to determine the benefit obligations as of December 31, 2016 and 2015 are summarized below. U.S. Pension Foreign Pension Other Postretirement 2016 2015 2016 2015 2016 2015 Discount rate 4.02-4.25 % 4.40 % 2.50-2.65 % 3.65 % 3.90-4.13 % 4.20 % Wage increases 3.00 % 3.00 % n/a n/a n/a n/a
Assumptions Regarding Net Periodic Pension and Other Postretirement Benefit Costs	The following assumptions were used to determine net periodic pension and other postretirement benefit costs for the year ended December 31: U.S. Pension Foreign Pension Other Postretirement 2016 2015 2014 2016 2015 2014 2016 2015 2014 Discount rate 4.20-4.40 % 4.00-4.10 % 5.00% 3.00-3.65 % 3.50 % 4.50 % 3.80-4.20 % 4.00 % 5.00 % Expected long-term rate of return 6.90-7.75 % 8.00 % 8.00% 5.40 % 5.40 % 6.50 % n/a n/a n/a Wages increases 3.00 % 4.00 % 4.00% n/a n/a n/a n/a n/a n/a

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	12 Months Ended
	Dec. 31, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Summary of Outstanding and Exercisable Incentive Options (RSUs and PSUs)	A summary of outstanding and exercisable incentive options (RSUs and PSUs) as of December 31, 2016, and activity for the year ended December 31, 2016 is as follows: Number of Weighted Weighted Outstanding at January 1, 2016 90,836 $ 15.72 26,263 $ 15.89 Granted 94,644 18.70 21,164 26.54 Converted (29,635 ) 15.72 0 N/A Forfeited/cancelled 0 N/A (8,079 ) 15.89 Outstanding at December 31, 2016 155,845 $ 17.53 39,348 $ 21.62
Summary of Outstanding and Exercisable Stock Options	A summary of outstanding and exercisable stock options as of December 31, 2016, and activity for the year ended December 31, 2016 is as follows: Number of Weighted Remaining Intrinsic Value Outstanding at January 1, 2016 1,013,336 $ 24.03 5.2 $ 0 Granted 0 N/A Exercised 0 N/A Forfeited (7,500 ) 19.37 Outstanding at December 31, 2016 1,005,836 $ 24.07 4.2 $ 0 Exercisable at December 31, 2016 957,113 $ 24.28 4.0 $ 0 Vested or expected to vest at December 31, 2016 1,005,836 $ 24.07 4.2 $ 0

Accumulated Other Comprehensi44

Accumulated Other Comprehensive Loss (Tables)	12 Months Ended
	Dec. 31, 2016
Equity [Abstract]
Net Change and Ending Balances for Various Components of Other Comprehensive Income (Loss) and Accumulated Other Comprehensive Loss	Net change and ending balances for the various components of other comprehensive income (loss) and for accumulated other comprehensive loss as of and for the year ended December 31, 2014, 2015 and 2016 are summarized below. Foreign Currency Translation Adjustments Unrecognized Components of Employee Benefit Plans Unrealized on Securities Derivatives Accumulated Balance at January 1, 2014 $ 277 $ (47,462 ) $ 1,007 $ 313 $ (45,865 ) Net Change (4,703 ) (17,934 ) (23 ) (228 ) (22,888 ) Balance at December 31, 2014 (4,426 ) (65,396 ) 984 85 (68,753 ) Net Change (3,967 ) 15,453 (292 ) (40 ) 11,154 Balance at December 31, 2015 (8,393 ) (49,943 ) 692 45 (57,599 ) Net Change (14,580 ) 11,307 (633 ) 506 (3,400 ) Balance at December 31, 2016 $ (22,973 ) $ (38,636 ) $ 59 $ 551 $ (60,999 )
Line Items Affected on Consolidated Statements of Operations for Components Reclassified from Accumulated Other Comprehensive Loss	The following summarizes the line items affected on the consolidated statements of operations for components reclassified from accumulated other comprehensive loss for each of the years ended December 31. Amounts in parentheses represent credits to net income (loss). 2016 2015 2014 Amortization of unrecognized employee benefit costs: Costs of products sold (excluding depreciation and amortization) $ 2,463 $ 3,604 $ 3,601 Selling and administrative (719 ) 3,354 1,524 Other expense 166 355 174 Total before income tax 1,910 7,313 5,299 Income tax provision 0 (2,573 ) (1,841 ) Net of income tax $ 1,910 $ 4,740 $ 3,458 Realized gains on sale of marketable securities: Selling and administrative $ (1,404 ) $ (82 ) $ (171 ) Income tax provision 366 29 60 Net of income tax $ (1,038 ) $ (53 ) $ (111 ) Realized gains/losses from settlement of cash flow hedges: Net sales (foreign currency sales contracts) $ (6 ) $ (17 ) $ 33 Depreciation and amortization (foreign currency purchase contracts) (27 ) (27 ) (27 ) Costs of products sold (excluding depreciation and amortization) (futures contracts – copper and aluminum) 220 751 146 Total before income tax 187 707 152 Income tax provision (79 ) (272 ) (57 ) Net of income tax $ 108 $ 435 $ 95
Summary of Income Tax Expense (Benefit) Associated with Various Components of Other Comprehensive Income (Loss)	The income tax expense (benefit) associated with the various components of other comprehensive income (loss) for each of the years ended December 31 is summarized below. For 2016, there was no income tax benefit for certain items due to the Corporation having a valuation allowance recorded against its deferred income tax assets for the jurisdiction where the expense is recognized. See Note 15. Foreign currency translation adjustments exclude the effect of income taxes since earnings of non-U.S. subsidiaries are deemed to be reinvested for an indefinite period of time. 2016 2015 2014 Income tax expense (benefit) associated with changes in: Unrecognized employee benefit costs $ 0 $ (4,731) $ 10,265 Unrealized holding losses/gains on marketable securities 0 134 (47 ) Fair value of cash flow hedges 0 294 206 Income tax expense (benefit) associated with reclassification adjustments: Amortization of unrecognized employee benefit costs 0 (2,573 ) (1,841 ) Realized gains from sale of marketable securities 366 29 60 Realized losses from settlement of cash flow hedges (79 ) (272 ) (57 )

Derivative Instruments (Tables)

Derivative Instruments (Tables)	12 Months Ended
	Dec. 31, 2016
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Location and Fair Value of Foreign Currency Sales Contracts Recorded on Consolidated Balance Sheets	The following summarizes location and fair value of the foreign currency sales contracts recorded on the consolidated balance sheets as of December 31: Location 2016 2015 Cash flow hedge contracts Other current assets $ 0 $ 10 Fair value hedge contracts Other current assets 214 113 Other noncurrent assets 2 0 Other current liabilities 940 258 Other noncurrent liabilities 35 49 Fair value hedged item Receivables 121 27 Other current assets 808 255 Other noncurrent assets 45 39 Other current liabilities 233 116 Other noncurrent liabilities 5 0
Summary of Amount Recognized as and Reclassified from Accumulated Other Comprehensive Income (Loss)	The change in the fair value of the cash flow contracts is recorded as a component of accumulated other comprehensive loss. Amounts recognized as and reclassified from accumulated other comprehensive loss are recorded as a component of other comprehensive income (loss) and are summarized below. All amounts are after-tax. For the Year Ended December 31, 2016 Comprehensive Income (Loss) Beginning of Plus Recognized as Comprehensive Less Gain (Loss) Reclassified from Accumulated Other Comprehensive Loss Comprehensive Income (Loss) End of Foreign currency sales contracts – cash flow hedges $ 4 $ 0 $ 4 $ 0 Foreign currency purchase contracts 241 0 25 216 Future contracts – copper and aluminum (200 ) 398 (137 ) 335 $ 45 $ 398 $ (108 ) $ 551 For the Year Ended December 31, 2015 Foreign currency sales contracts – cash flow hedges $ 0 $ 14 $ 10 $ 4 Foreign currency purchase contracts 258 0 17 241 Future contracts – copper and aluminum (173 ) (489 ) (462 ) (200 ) $ 85 $ (475 ) $ (435 ) $ 45 For the Year Ended December 31, 2014 Foreign currency sales contracts – cash flow hedges $ 0 $ (21 ) $ (21 ) $ 0 Foreign currency purchase contracts 275 0 17 258 Future contracts – copper and aluminum 38 (302 ) (91 ) (173 ) $ 313 $ (323 ) $ (95 ) $ 85
Summary of Change in Fair Value Reclassified or Expected to be Reclassified from Accumulated Other Comprehensive Loss to Earnings	The change in fair value reclassified or expected to be reclassified from accumulated other comprehensive loss to earnings is summarized below. All amounts are pre-tax. Location of Estimated to be Year Ended December 31, of Operations 12 Months 2016 2015 2014 Foreign currency sales contracts – cash flow hedges Net sales $ 0 $ 6 $ 17 $ (33 ) Foreign currency purchase contracts Depreciation and amortization 27 27 27 27 Futures contracts – copper and aluminum Costs of products sold (excluding depreciation and amortization) 398 (220 ) (751 ) (146 )

Fair Value (Tables)

Fair Value (Tables)	12 Months Ended
	Dec. 31, 2016
Fair Value Disclosures [Abstract]
Fair Value of Financial Assets and Liabilities	The following summarizes financial assets and liabilities reported at fair value on a recurring basis in the accompanying consolidated balance sheets at December 31: 2016 Quoted Prices Identical Inputs (Level 1) Significant Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Total Investments Other noncurrent assets $ 3,863 $ 0 $ 0 $ 3,863 Foreign currency exchange contracts Other current assets 0 1,022 0 1,022 Other noncurrent assets 0 47 0 47 Other current liabilities 0 1,173 0 1,173 Other noncurrent liabilities 0 40 0 40 2015 Investments Other noncurrent assets $ 3,663 $ 0 $ 0 $ 3,663 Foreign currency exchange contracts Other current assets 0 378 0 378 Other noncurrent assets 0 39 0 39 Other current liabilities 0 374 0 374 Other noncurrent liabilities 0 49 0 49

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2016
Income Tax Disclosure [Abstract]
(Loss) Income Before Income Taxes and Equity Gains (Losses) in Chinese Joint Venture	(Loss) income before income taxes and equity gains (losses) in Chinese joint venture is comprised of the following: 2016 2015 2014 Domestic $ (26,326 ) $ 6,000 $ (1,182 ) Foreign (31,194 ) (1,480 ) 290 $ (57,520 ) $ 4,520 $ (892 )
Income Tax Provision (Benefit)	The income tax provision (benefit) consisted of the following: 2016 2015 2014 Current: Federal $ (1,574 ) $ 4,577 $ 3,458 State 465 378 210 Foreign 414 (20 ) 122 (695 ) 4,935 3,790 Deferred Federal (2,688 ) (2,203 ) (4,678 ) State (1,838 ) 197 54 Foreign (2,472 ) (296 ) 101 Increase (reversal) of valuation allowance 30,405 0 (33 ) 23,407 (2,302 ) (4,556 ) $ 22,712 $ 2,633 $ (766 )
Difference Between Statutory U.S. Federal Income Tax and the Corporation's Effective Income Tax	The difference between statutory U.S. federal income tax and the Corporation’s effective income tax was as follows: 2016 2015 (1) 2014 (1) Computed at statutory rate $ (19,984 ) $ 1,402 $ (683 ) Tax differential on non-U.S. earnings 1,790 106 128 State income taxes (1,535 ) 226 (227 ) Manufacturers deduction (I.R.C. Section 199) 204 (433 ) (359 ) Meals and entertainment 143 136 224 Tax credits 0 (243 ) (12 ) Goodwill impairment 9,191 0 0 Increase (reversal) of valuation allowance 30,405 0 (33 ) Change in tax rates 1,913 224 301 Change in uncertain tax positions 114 91 (80 ) Acquisition-related costs 571 981 0 Other – net (100 ) 143 (25 ) $ 22,712 $ 2,633 $ (766 ) (1) Certain reclassifications have been made to the prior year columns to conform to the current year presentation.
Deferred Income Tax Assets and Liabilities	Deferred income tax assets and liabilities as of December 31, 2016 and 2015 are summarized below. 2016 2015 Assets: Employment – related liabilities $ 18,659 $ 9,644 Pension liability – foreign 2,241 2,822 Pension liability – domestic 16,133 12,934 Liabilities related to discontinued operations 241 704 Capital loss carryforwards 282 223 Asbestos-related liability 21,024 16,356 Net operating loss – domestic 653 0 Net operating loss – state 2,123 1,445 Net operating loss – foreign 19,106 0 Inventory related 2,157 4,292 Impairment charge associated with investment in UES-MG 2,184 2,298 Investment tax credits – foreign 791 0 Other 6,660 3,311 Gross deferred income tax assets 92,254 54,029 Valuation allowance (1) (45,449 ) (2,481 ) 46,805 51,548 Liabilities: Depreciation (37,584 ) (29,223 ) Mark-to-market adjustment – derivatives (187 ) (40 ) Intangible assets – definite life (2,067 ) 0 Intangible assets – indefinite life (731 ) 0 Other (2,003 ) (1,716 ) Gross deferred income tax liabilities (42,572 ) (30,979 ) Net deferred income tax assets $ 4,233 $ 20,569 (1) Certain deferred income tax assets acquired in the ASW acquisition had valuation allowances recorded in the opening balance sheet. Accordingly, the valuation allowance indicated in the deferred income tax table differs from the valuation allowance recognized in the income tax provision for 2016.
Summary of Changes in Unrecognized Tax Benefits	The following summarizes changes in unrecognized tax benefits for the year ended December 31: 2016 2015 2014 Balance at the beginning of the year $ 315 $ 52 $ 270 Gross increases for tax positions taken in the current year 0 0 0 Gross increases for tax positions taken in prior years 0 283 2 Gross decreases in tax positions due to lapse in statute of limitations (79 ) (20 ) (61 ) Gross decreases for tax positions taken in prior years 0 0 (17 ) Gross decreases for tax settlements with taxing authorities 0 0 (142 ) Balance at the end of the year $ 236 $ 315 $ 52

Litigation (Tables)

Litigation (Tables)	12 Months Ended
	Dec. 31, 2016
Text Block [Abstract]
Schedule of Loss Contingencies by Contingency	The following table reflects approximate information about the claims for Asbestos Liability against the subsidiaries and the Corporation for the two years ended December 31, 2016 and 2015: 2016 2015 Total claims pending at the beginning of the period 6,212 8,457 New claims served 1,452 1,424 Claims dismissed (782 ) (3,339 ) Claims settled (264 ) (330 ) Total claims pending at the end of the period (1) 6,618 6,212 Gross settlement and defense costs (in 000’s) $ 17,960 $ 19,199 Average gross settlement and defense costs per claim resolved (in 000’s) $ 17.17 $ 5.23 (1) Included as “open claims” are approximately 444 and 430 claims in 2016 and 2015, respectively, classified in various jurisdictions as “inactive” or transferred to a state or federal judicial panel on multi-district litigation, commonly referred to as the MDL.
Summary of Activity in Asbestos Insurance Recoveries	The following table summarizes activity relating to insurance recoveries for each of the years ended December 31, 2016 and 2015. 2016 2015 Insurance receivable – asbestos, beginning of the year $ 125,423 $ 140,651 Settlement and defense costs paid by insurance carriers (1) (23,138 ) (15,228 ) Changes in estimated coverage 13,660 0 Insurance receivable – asbestos, end of the year $ 115,945 $ 125,423 (1) Settlement and defense costs paid by insurance carriers for 2016, includes a lump sum cash settlement with an insurance carrier of $9,808.

Business Segments (Tables)

Business Segments (Tables)	12 Months Ended
	Dec. 31, 2016
Segment Reporting [Abstract]
Business Segment Net Sales and (Loss) Income before Income Taxes	The accounting policies are the same as those described in Note 1. Net Sales (Loss) Income Before Income Taxes and Equity Losses in Chinese Joint Venture 2016 2015 2014 2016 2015 2014 Forged and Cast Engineered Products (1) $ 247,652 $ 152,267 $ 179,388 $ (42,878 ) $ (3,444 ) $ 4,380 Air and Liquid Processing (1) 84,214 86,213 93,470 5,123 23,166 4,222 Total Reportable Segments 331,866 238,480 272,858 (37,755 ) 19,722 8,602 Corporate costs, including other income (expense) (19,765 ) (15,202 ) (9,494 ) $ 331,866 $ 238,480 $ 272,858 $ (57,520 ) $ 4,520 $ (892 ) Capital Expenditures Depreciation and Identifiable Assets (2) 2016 2015 2014 2016 2015 2014 2016 2015 2014 Forged and Cast Engineered Products $ 9,440 $ 8,608 $ 12,884 $ 19,166 $ 10,468 $ 10,303 $ 348,331 $ 228,718 $ 260,384 Air and Liquid Processing 385 494 356 1,183 1,262 1,444 173,017 183,024 197,518 Corporate 741 305 69 114 57 71 44,541 94,414 78,507 $ 10,566 $ 9,407 $ 13,309 $ 20,463 $ 11,787 $ 11,818 $ 565,889 $ 506,156 $ 536,409 Net Sales (3) Long-Lived Assets (4) (Loss) Income Before Income Geographic Areas: 2016 2015 2014 2016 2015 2014 2016 2015 2014 United States $ 159,531 $ 126,417 $ 143,493 $ 206,460 $ 236,707 $ 252,739 $ (25,906 ) $ 5,855 $ (1,471 ) Foreign 172,335 112,063 129,365 133,141 29,198 31,359 (31,614 ) (1,335 ) 579 $ 331,866 $ 238,480 $ 272,858 $ 339,601 $ 265,905 $ 284,098 $ (57,520 ) $ 4,520 $ (892 ) Net Sales by Product Line (5) 2016 2015 2014 Forged and cast engineered products $ 247,652 $ 152,267 $ 179,388 Heat exchange coils 28,139 32,745 39,109 Centrifugal pumps 36,359 33,120 32,983 Air handling systems 19,716 20,348 21,378 $ 331,866 $ 238,480 $ 272,858 (1) Income (loss) before income taxes and equity losses in Chinese Joint Venture for the Forged and Cast Engineered Products segment includes a pre-tax charge of $26,676 principally for the write off of goodwill associated with the Forged and Cast Engineered Products reporting unit deemed to be impaired. Income (loss) before income taxes and equity losses in Chinese Joint Venture for the Air and Liquid Processing segment for 2016 includes pre-tax charge of $4,565 for estimated costs of asbestos-related litigation through 2026 net of estimated insurance recoveries and a settlement with an insurance carrier for an amount greater than originally estimated, 2015 includes pre-tax asbestos-related proceeds of $14,333 received from two insurance carriers in rehabilitation, and 2014 includes a pre-tax charge of $4,487 for estimated costs of asbestos-related litigation through 2024 net of estimated insurance recoveries. (2) Identifiable assets for the Forged and Cast Engineered Products segment include investments in joint ventures of $2,019, $3,097 and $3,914 at December 31, 2016, 2015 and 2014, respectively. The change in the identifiable assets of the Air and Liquid Processing segment relates primarily to the movement in asbestos-related insurance receivables, the balances of which equaled $115,945, $125,423 and $140,651 at December 31, 2016, 2015 and 2014, respectively. (3) Net sales are attributed to countries based on location of the customer. Sales to individual countries were less than 10% of consolidated net sales each of the years. (4) Foreign long-lived assets represent primarily investments in joint ventures of $2,019, $3,097 and $3,914 at December 31, 2016, 2015 and 2014, respectively, and assets of the U.K. and Åkers operations. Long-lived assets of the U.S. include noncurrent asbestos-related insurance receivables of $102,945, $108,423 and $123,651 for 2016, 2015 and 2014, respectively. (5) For the Forged and Cast Engineered Products segment, two customers accounted for 24%, 33% and 29% of its net sales for 2016, 2015 and 2014, respectively. For the Air and Liquid Processing segment, one customer accounted for 10% of its net sales for 2016 and no customers exceeded 10% of net sales for 2015 or 2014. One customer accounted for 11% of the Corporation’s consolidated sales in 2016.

Quarterly Information - Unaud50

Quarterly Information - Unaudited (Tables)	12 Months Ended
	Dec. 31, 2016
Quarterly Financial Information Disclosure [Abstract]
Quarterly Information	(in thousands, except per share amounts) First Quarter Second Quarter Third Quarter Fourth Quarter 2016 Net sales $ 63,578 $ 93,301 $ 82,861 $ 92,126 Gross profit (a) 12,473 15,849 15,594 11,454 Net (loss) income attributable to Ampco-Pittsburgh (b) (2,890 ) (6,486 ) (27,382 ) (43,062 ) Net (loss) income per common share attributable to Ampco-Pittsburgh: Basic (b) (0.26 ) (0.53 ) (2.23 ) (3.51 ) Diluted (b) (0.26 ) (0.53 ) (2.23 ) (3.51 ) Comprehensive (loss) income attributable to Ampco-Pittsburgh (c) (1,501 ) (10,739 ) (22,894 ) (47,972 ) 2015 Net sales $ 65,087 $ 59,973 $ 58,094 $ 55,326 Gross profit (a) 13,043 11,776 9,439 8,131 Net income (loss) attributable to Ampco-Pittsburgh (d) 72 (520 ) (1,511 ) 3,332 Net income (loss) per common share attributable to Ampco-Pittsburgh: Basic (d) 0.01 (0.05 ) (0.14 ) 0.32 Diluted (d) 0.01 (0.05 ) (0.14 ) 0.32 Comprehensive income (loss) attributable to Ampco-Pittsburgh (e) 3,692 2,789 (2,250 ) 8,296 (a) Gross profit excludes depreciation and amortization. (b) The second, third and fourth quarters of 2016 include valuation allowances of $1,419, $26,903 and $2,083, respectively, to recognize existing net deferred income tax assets to their estimated net realizable value. Fourth quarter of 2016 also includes an after-tax charge of $4,565 or $0.38 per common share for estimated costs of asbestos-related litigation through 2026 net of estimated insurance recoveries and a settlement with an insurance carrier for an amount greater than originally estimated, and an after-tax charge of $26,676 or $2.23 per common share primarily for the write off of goodwill in the Forged and Cast Engineered Products reporting unit deemed to be impaired. (c) Third quarter of 2016 includes an adjustment to recognize the effect of a plan amendment to one of its other postretirement benefit plans of $4,762. No income tax benefit was recognized due to the Corporation having a valuation allowance recorded against the deferred income tax assets for the jurisdiction affected by the plan amendment. (d) Fourth quarter of 2015 includes an after-tax credit of $9,316 or $0.89 per common share for the net benefit of proceeds received from an insurance carrier in rehabilitation offset by acquisition-related costs. (e) First quarter of 2015 includes a net-of-tax adjustment to recognize the effect of a plan amendment to the other postretirement benefit plan of $4,163. Fourth quarter of 2015 includes a net-of-tax adjustment to reflect the funded status of the various pension and other postretirement benefit plans of $5,231.

Description of Business - Addit

Description of Business - Additional Information (Detail) - Segment	12 Months Ended
	Dec. 31, 2016	Mar. 03, 2016
Schedule Of Description Of Business [Line Items]
Number of business segments	2
Akers AB [Member]
Schedule Of Description Of Business [Line Items]
Business acquisition, equity interest acquired		100.00%
Chinese Joint Venture Company [Member] | Akers AB [Member]
Schedule Of Description Of Business [Line Items]
Business acquisition, equity interest acquired		60.00%

Summary of Significant Accoun52

Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Schedule Of Significant Accounting Policies [Line Items]
Percentage of unrealized gains and losses used to determine market related value of plan asset	20.00%
Moving average period to determine market value of plan assets	5 years
Vesting period, years	3 years
Deferred tax liability recorded	$ 0
Weighted average diluted common shares outstanding	11,951,181	10,447,066	10,404,744
Restricted Stock Units (RSUs) [Member]
Schedule Of Significant Accounting Policies [Line Items]
Vesting period, years	3 years
Stock Option [Member]
Schedule Of Significant Accounting Policies [Line Items]
Vesting period, years	3 years
Stock Option [Member]
Schedule Of Significant Accounting Policies [Line Items]
Weighted average outstanding stock options	1,163,396	1,138,287	1,242,545
Minimum [Member]
Schedule Of Significant Accounting Policies [Line Items]
Investments in joint ventures	20.00%
Defined benefit plan actuarial gain loss percentage	10.00%
Minimum [Member] | Land and Land Improvements [Member]
Schedule Of Significant Accounting Policies [Line Items]
Property, plant and equipment, estimated useful life	15 years
Minimum [Member] | Buildings [Member]
Schedule Of Significant Accounting Policies [Line Items]
Property, plant and equipment, estimated useful life	25 years
Minimum [Member] | Machinery and Equipment [Member]
Schedule Of Significant Accounting Policies [Line Items]
Property, plant and equipment, estimated useful life	3 years
Maximum [Member]
Schedule Of Significant Accounting Policies [Line Items]
Investments in joint ventures	50.00%
Defined benefit plan actuarial gain loss percentage	10.00%
Maximum [Member] | Land and Land Improvements [Member]
Schedule Of Significant Accounting Policies [Line Items]
Property, plant and equipment, estimated useful life	20 years
Maximum [Member] | Buildings [Member]
Schedule Of Significant Accounting Policies [Line Items]
Property, plant and equipment, estimated useful life	50 years
Maximum [Member] | Machinery and Equipment [Member]
Schedule Of Significant Accounting Policies [Line Items]
Property, plant and equipment, estimated useful life	25 years

Acquisition - Additional Inform

Acquisition - Additional Information (Detail) $ in Thousands	Nov. 01, 2016USD ($)	Mar. 03, 2016USD ($)Officeshares	Jul. 29, 2015USD ($)	Dec. 31, 2016USD ($)	Dec. 31, 2016USD ($)	Dec. 31, 2016USD ($)	Dec. 31, 2015USD ($)
Akers AB [Member]
Business Acquisition [Line Items]
Business acquisition, equity interest acquired		100.00%
Total base purchase price		$ 74,155
Purchase price in the form of cash		29,399
Purchase price in the form of three-year promissory note		$ 22,619
Purchase price in the form of shares | shares		1,776,604
Business acquisition, fair value		$ 22,137
Post-closing adjustments on Purchase price		3,100
Business acquisition, net sales					$ 121,079
Business acquisition, loss before income taxes					$ (10,130)
Fair value adjustment to property, plant and equipment		3,700
Fair value adjustment to noncontrolling interest		9,600
Fair value adjustment to deferred income taxes		7,400
Intangible assets acquired		11,784
Loans payable with accrued interest		$ 7,468
Akers AB [Member] | Developed Technology [Member]
Business Acquisition [Line Items]
Acquired intangible assets, economic lives		5 years
Intangible assets acquired		$ 4,429
Akers AB [Member] | Customer Relationships [Member]
Business Acquisition [Line Items]
Acquired intangible assets, economic lives		20 years
Intangible assets acquired		$ 4,736
Akers AB [Member] | Trade Name [Member]
Business Acquisition [Line Items]
Intangible assets acquired		$ 2,619
Akers Ab and ASW Steel Inc [Member]
Business Acquisition [Line Items]
Acquisition-related transaction costs						$ 3,056	$ 3,383
Alloys Unlimited & Processing, Inc. [Member]
Business Acquisition [Line Items]
Purchase price in the form of cash			$ 5,000
Forged and Cast Engineered Products [Member]
Business Acquisition [Line Items]
Impairment of goodwill						$ 26,261
ASW Steel Inc [Member]
Business Acquisition [Line Items]
Total base purchase price	$ 3,500
Purchase price in the form of cash	3,500
Business acquisition, net sales				$ 7,523
Business acquisition, loss before income taxes				$ (1,781)
Total purchase price	13,116
Outstanding indebtedness	$ 9,616
U.S. [Member]
Business Acquisition [Line Items]
Number of sales offices | Office		1

Acquisition - Summary of Fair V

Acquisition - Summary of Fair Value of Assets Acquired and Liabilities Assumed (Detail) - USD ($) $ in Thousands	Nov. 01, 2016	Mar. 03, 2016
Akers AB [Member]
Business Acquisition [Line Items]
Current assets (excluding inventories)		$ 41,703
Inventories		30,332
Property, plant and equipment		71,871
Intangible assets		11,784
Other noncurrent assets		8,068
Current liabilities		(71,690)
Noncurrent liabilities		(43,153)
Net assets acquired		48,915
Noncontrolling interest		(2,019)
Goodwill		27,259
Base purchase price		$ 74,155
ASW Steel Inc [Member]
Business Acquisition [Line Items]
Current assets (excluding inventories)	$ 6,525
Inventories	6,956
Property, plant and equipment	10,310
Current liabilities	(10,675)
Outstanding indebtedness	(9,616)
Base purchase price	$ 3,500

Acquisition - Summary of Pro Fo

Acquisition - Summary of Pro Forma Financial Information (Detail) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Business Acquisition [Line Items]
Net loss attributable to Ampco-Pittsburgh	$ (85,778)	$ (24,740)
Net loss per common share (basic) attributable to Ampco-Pittsburgh	$ (6.94)	$ (2.03)
Akers AB [Member]
Business Acquisition [Line Items]
Net sales	$ 393,243	$ 440,265
Loss before income taxes (includes noncontrolling interest)	$ (63,498)	$ (11,945)

Investments in Joint Ventures -

Investments in Joint Ventures - Additional Information (Detail) - USD ($)	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Nov. 30, 2016	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Nov. 30, 2016
Maximum [Member]
Schedule of Investments [Line Items]
Percentage of ownership in joint venture	50.00%				50.00%
UES [Member]
Schedule of Investments [Line Items]
Percentage of ownership in joint venture	49.00%				49.00%
Cash payment for joint venture					$ 14,700,000
Percentage of equity sold				16.00%
Amount of equity method investment sold				$ 2,400,000
Period of payment for equity interest sold				3 years
Percentage of intercompany profit					49.00%
Recognized gain on sale of equity interest percentage								$ 111,000
Losses of the joint venture approximated						$ (1,050,000)	$ (2,165,000)
Dividend declared	$ 395,000	$ 0	$ 0
UES [Member] | Maximum [Member]
Schedule of Investments [Line Items]
Carrying amount of investment	$ 700,000				$ 700,000
Maanshan [Member]
Schedule of Investments [Line Items]
Percentage of ownership in joint venture	51.00%				51.00%
ATR [Member] | Akers AB [Member]
Schedule of Investments [Line Items]
Ownership interest by primary beneficiary	59.88%				59.88%
ATR [Member] | TISCO [Member]
Schedule of Investments [Line Items]
Ownership interest by minority holder	40.12%				40.12%
Gongchang [Member]
Schedule of Investments [Line Items]
Recorded cost in Gongchang	$ 1,340,000				$ 1,340,000
Percentage of ownership in Gongchang	24.00%				24.00%

Investments in Joint Ventures57

Investments in Joint Ventures - Assets, Liabilities and Shareholders' Equity of Joint Venture (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Assets:
Current assets (includes receivables from related parties of $187 and $935, respectively)	$ 7,856	$ 8,332
Noncurrent assets	16,080	28,993
Total assets	23,936	37,325
Liabilities and Shareholders' Equity:
Current liabilities (includes liabilities to related parties of $3,651 and $17,230, respectively)	4,551	17,455
Noncurrent liabilities (includes liabilities to related parties of $813 and $0, respectively)	813	0
Shareholders' equity	18,572	19,870
Total liabilities and shareholders' equity	$ 23,936	$ 37,325

Investments in Joint Ventures58

Investments in Joint Ventures - Assets, Liabilities and Shareholders' Equity of Joint Venture (Parenthetical) (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Investment In Joint Venture [Abstract]
Receivables from related parties	$ 187	$ 935
Liabilities to related parties	3,651	17,230
Noncurrent liabilities to related parties	$ 813	$ 0

Inventories - Schedule of Inven

Inventories - Schedule of Inventories (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Inventory Disclosure [Abstract]
Raw materials	$ 23,964	$ 18,314
Work-in-progress	29,198	21,583
Finished goods	20,046	9,897
Supplies	10,371	9,940
Inventories	$ 83,579	$ 59,734

Inventories - Additional Inform

Inventories - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Inventory Disclosure [Abstract]
Percentage of inventories valued on the LIFO method	45.00%	60.00%
The LIFO reserve approximated	$ (15,139)	$ (24,647)
Decrease in costs of products sold	936	216	$ 2,196
Net income	$ 936	$ 141	$ 1,427
Common per share	$ 0.08	$ 0.01	$ 0.14

Property, Plant and Equipment -

Property, Plant and Equipment - Schedule of Property, Plant and Equipment (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Gross	$ 411,538	$ 327,491
Accumulated depreciation and amortization	(197,130)	(180,578)
Property, plant and equipment, Net	214,408	146,913
Land and Land Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Gross	11,747	5,223
Buildings [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Gross	66,017	44,570
Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Gross	323,684	266,358
Construction-in-Progress [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Gross	2,595	3,566
Other [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Gross	$ 7,495	$ 7,774

Property, Plant and Equipment62

Property, Plant and Equipment - Additional Information (Detail) - Dec. 31, 2016 £ in Thousands, $ in Thousands	USD ($)	GBP (£)
Property, Plant and Equipment [Abstract]
Land and Building	$ 2,556	£ 2,072
Capital leased assets gross value	3,610
Capital lease, lease related accumulated amortization	$ 691

Intangible Assets - Schedule of

Intangible Assets - Schedule of Intangible Assets (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items]
Intangible assets, Trade name	$ 2,537	$ 0
Intangible assets, gross	13,029	1,245
Accumulated amortization	(1,428)	(52)
Intangible assets, net	11,601	1,193	$ 0
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, gross	6,244	1,245
Developed Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, gross	$ 4,248	$ 0

Intangible Assets - Summary of

Intangible Assets - Summary of Changes in Intangible Assets (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Intangible Assets, Net (Excluding Goodwill) [Abstract]
Balance at the beginning of the year	$ 1,193	$ 0
Changes in intangible assets	11,784	1,245
Amortization of intangible assets	(1,106)	(52)
Other, primarily impact from changes in foreign currency exchange rates	(270)	0
Balance at the end of the year	$ 11,601	$ 1,193

Intangible Assets - Additional

Intangible Assets - Additional Information (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Goodwill [Line Items]
Indefinite-lived trade name	$ 2,537	$ 0
Akers AB [Member]
Goodwill [Line Items]
Indefinite-lived trade name	2,537
Estimated future amortization expense in 2017	1,150
Estimated future amortization expense in 2018	1,150
Estimated future amortization expense in 2019	1,150
Estimated future amortization expense in 2020	1,150
Estimated future amortization expense in 2021	485
Estimated future amortization expense, thereafter	$ 3,979

Other Current Liabilities - Sch

Other Current Liabilities - Schedule of Other Current Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Other Liabilities Disclosure [Abstract]
Customer-related liabilities	$ 21,564	$ 12,195
Accrued interest payable	2,274	3
Income taxes payable	0	3,256
Accrued sales commissions	1,693	1,506
Other	16,666	6,920
Other current liabilities	$ 42,197	$ 23,880

Other Current Liabilities - S67

Other Current Liabilities - Schedule of Changes in Liability for Product Warranty Claims (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Other Liabilities Disclosure [Abstract]
Balance at the beginning of the year	$ 6,358	$ 6,672	$ 6,899
Acquisitions - opening balance sheet liability for warranty claims	7,130	0	0
Satisfaction of warranty claims	(4,297)	(2,452)	(2,335)
Provision for warranty claims	3,282	2,293	2,300
Other, primarily impact from changes in foreign currency exchange rates	(952)	(155)	(192)
Balance at the end of the year	$ 11,521	$ 6,358	$ 6,672

Borrowing Arrangements - Additi

Borrowing Arrangements - Additional Information (Detail) ¥ in Thousands	12 Months Ended
	Dec. 31, 2016USD ($)	Dec. 31, 2015USD ($)	Dec. 31, 2014USD ($)	Dec. 31, 2016GBP (£)	Dec. 31, 2016EUR (€)	Dec. 31, 2016CNY (¥)
Line of Credit Facility [Line Items]
Initial borrowing capacity	$ 750,000			£ 250,000	€ 400,000
Credit amount outstanding	0	$ 0
Future principal payments, next twelve months	26,825,000
Future principal payments, in year two	585,000
Future principal payments, in year three	24,257,000
Future principal payments, in year four	337,000
Future principal payments, in year five	210,000
Deferred financing fees	1,250,000
Notes issued	22,619,000	0	$ 0
Accrued interest	2,274,000	3,000
Industrial Revenue Bonds [Member]
Line of Credit Facility [Line Items]
Debt outstanding	$ 13,311,000	13,311,000
Promissory Notes (and Interest) [Member]
Line of Credit Facility [Line Items]
Debt, interest rate	6.50%			6.50%	6.50%	6.50%
Accrued interest	$ 1,225,000
Debt, maturity date	Mar. 3, 2019
Debt outstanding	$ 23,844,000	0
Promissory Notes (and Interest) [Member] | Akers AB [Member]
Line of Credit Facility [Line Items]
Notes issued	$ 22,619,000
Minority Shareholder Loan [Member]
Line of Credit Facility [Line Items]
Debt, interest rate	4.90%			4.90%	4.90%	4.90%
Accrued interest	$ 2,265,000					¥ 15,730
Debt outstanding	4,990,000	0				¥ 34,655
Credit Facilities [Member]
Line of Credit Facility [Line Items]
Initial borrowing capacity	$ 20,000,000
Debt instrument description of interest rate	Interest at 4% plus the higher of LIBOR or 1%
Debt instrument basis spread	4.00%
Credit amount outstanding	$ 7,146,000
Debt, interest rate	5.11%			5.11%	5.11%	5.11%
Collateral fee percentage	1.20%
Commitment fee percentage	0.50%
Debt instrument, maturity date	2017-06
Early termination fee percentage	2.00%
Early termination fee	$ 400,000
Fixed-Rate Term Loan Facility [Member]
Line of Credit Facility [Line Items]
Initial borrowing capacity	$ 5,000,000
Debt instrument description of interest rate	Interest at 7.25% plus the higher of LIBOR or 1%.
Debt instrument basis spread	7.25%
Credit amount outstanding	$ 762,000
Debt, interest rate	9.16%			9.16%	9.16%	9.16%
Debt instrument, maturity date	2017-06
Early termination fee percentage	2.00%
Early termination fee	$ 400,000
Letter of Credit [Member]
Line of Credit Facility [Line Items]
Initial borrowing capacity	$ 40,000,000
Credit Facility [Member]
Line of Credit Facility [Line Items]
Revolving credit term	5 years
Additional borrowing capacity	$ 50,000,000
Line of credit, remaining borrowing capacity	54,000
Debt outstanding	$ 7,146,000	$ 0
Credit Facility [Member] | London Interbank Offered Rate (LIBOR) [Member]
Line of Credit Facility [Line Items]
Debt instrument description of interest rate	LIBOR plus an applicable margin ranging between 1.25% to 1.75%
Credit Facility [Member] | Base Rate [Member]
Line of Credit Facility [Line Items]
Debt instrument description of interest rate	Base Rate plus an applicable margin ranging between 0.25% to 0.75%
European Credit Facility [Member]
Line of Credit Facility [Line Items]
Initial borrowing capacity	$ 15,000,000
Canadian Credit Facility [Member]
Line of Credit Facility [Line Items]
Initial borrowing capacity	$ 15,000,000
Minimum [Member] | Capital Leases [Member]
Line of Credit Facility [Line Items]
Effective interest rate	1.20%			1.20%	1.20%	1.20%
Minimum [Member] | Credit Facility [Member]
Line of Credit Facility [Line Items]
Commitment fee payable percentage	0.25%
Minimum [Member] | Credit Facility [Member] | London Interbank Offered Rate (LIBOR) [Member]
Line of Credit Facility [Line Items]
Debt instrument basis spread	1.25%
Minimum [Member] | Credit Facility [Member] | Base Rate [Member]
Line of Credit Facility [Line Items]
Debt instrument basis spread	0.25%
Maximum [Member] | Capital Leases [Member]
Line of Credit Facility [Line Items]
Effective interest rate	5.30%			5.30%	5.30%	5.30%
Maximum [Member] | Credit Facility [Member]
Line of Credit Facility [Line Items]
Initial borrowing capacity	$ 100,000,000
Commitment fee payable percentage	0.375%
Fixed charge coverage ratio	1			1	1	1
Maximum [Member] | Credit Facility [Member] | London Interbank Offered Rate (LIBOR) [Member]
Line of Credit Facility [Line Items]
Debt instrument basis spread	1.75%
Maximum [Member] | Credit Facility [Member] | Base Rate [Member]
Line of Credit Facility [Line Items]
Debt instrument basis spread	0.75%
Tax Exempt Industrial Revenue Bond One [Member] | Industrial Revenue Bonds [Member]
Line of Credit Facility [Line Items]
Tax-exempt IRB maturing in 2020/2027/2029	$ 4,120,000
Interest at a floating rate on tax-exempt IRB maturing in 2020/2027/2029	0.50%			0.50%	0.50%	0.50%
Taxable Industrial Revenue Bond [Member] | Industrial Revenue Bonds [Member]
Line of Credit Facility [Line Items]
Tax-exempt IRB maturing in 2020/2027/2029	$ 7,116,000
Interest at a floating rate on tax-exempt IRB maturing in 2020/2027/2029	0.65%			0.65%	0.65%	0.65%
Tax Exempt Industrial Revenue Bond Two [Member] | Industrial Revenue Bonds [Member]
Line of Credit Facility [Line Items]
Tax-exempt IRB maturing in 2020/2027/2029	$ 2,075,000
Interest at a floating rate on tax-exempt IRB maturing in 2020/2027/2029	0.59%			0.59%	0.59%	0.59%

Borrowing Arrangements - Schedu

Borrowing Arrangements - Schedule of Outstanding Borrowings (Detail) ¥ in Thousands, $ in Thousands	Dec. 31, 2016USD ($)	Dec. 31, 2016CNY (¥)	Dec. 31, 2015USD ($)
Debt Instrument [Line Items]
Capital leases	$ 2,161		$ 0
Long term debt	52,214		13,311
Long term debt	52,214		13,311
Current portion	(26,825)		(13,311)
Debt non current	25,389		0
Credit Facility [Member]
Debt Instrument [Line Items]
Long term debt	7,146		0
Industrial Revenue Bonds [Member]
Debt Instrument [Line Items]
Long term debt	13,311		13,311
Promissory Notes (and Interest) [Member]
Debt Instrument [Line Items]
Long term debt	23,844		0
Minority Shareholder Loan [Member]
Debt Instrument [Line Items]
Long term debt	4,990	¥ 34,655	0
Term Loan [Member]
Debt Instrument [Line Items]
Long term debt	$ 762		$ 0

Pension and Other Postretirem70

Pension and Other Postretirement Benefits - Additional Information (Detail) £ in Thousands	12 Months Ended
	Dec. 31, 2016USD ($)CustomerPension_PlanEmployeesLocation	Dec. 31, 2016GBP (£)CustomerEmployeesLocation	Dec. 31, 2015USD ($)	Dec. 31, 2014USD ($)	Dec. 31, 2016GBP (£)Pension_Plan	Dec. 31, 2015GBP (£)
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]
Defined benefit pension contribution plan, non-elective base contribution rate	3.00%	3.00%
Number of employees participate in the plan | Employees	100,000	100,000
Multiemployer plan number of employees description	Approximately 100,000	Approximately 100,000
Total amount of assets collected	$ 11,600,000,000
Percentage of funded status in excess	101.00%	101.00%
Participation of corporation's employees in the plan	Less than 100	Less than 100
Corporation's contributions	$ 237,000		$ 236,000	$ 233,000
Percentage of employers contributions	5.00%				5.00%
Contributions expected in 2017	$ 259,000
Contributions to defined contribution pension plan | £		£ 1,123
Service period to avail existing pension plan	15 years	15 years
Maximum maturity period of fixed income investments	10 years	10 years
Investments in diversified portfolio	Invests primarily in a diversified portfolio of fixed-income securities of varying maturities or in commingled funds which invest in a diversified portfolio of fixed-income securities of varying maturities.	Invests primarily in a diversified portfolio of fixed-income securities of varying maturities or in commingled funds which invest in a diversified portfolio of fixed-income securities of varying maturities.
Target allocation	Generate a minimum annual inflation adjusted return of 5% and outperform a traditional 70/30 equities/bond portfolio.	Generate a minimum annual inflation adjusted return of 5% and outperform a traditional 70/30 equities/bond portfolio.
High-quality fixed-income investments maturity	10 years	10 years
Assumed health care cost trend rate for 2017	6.00%	6.00%
Akers AB [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]
Employer non-elective contributions, percentage of employee compensation	3.00%	3.00%
Reduction in pension liability due to exit from defined benefit plan	$ 1,181,000
Curtailment gain (loss)	$ 887,000
Number of postretirement benefit plans | Pension_Plan	2				2
Ampco Pittsburgh [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]
Voluntary contributions made	$ 2,466,000		882,000
Employer contribution expected in 2017	$ 2,810,000
Minimum [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]
Defined benefit plan actuarial gain loss percentage	10.00%				10.00%
Minimum [Member] | Multi-Employer Plan [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]
Number of employer locations contributed to the plan | Location	1,650	1,650
Maximum [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]
Defined benefit pension contribution plan, matching contribution rate	4.00%	4.00%
Defined benefit plan actuarial gain loss percentage	10.00%				10.00%
U.S. Pension Benefits [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]
Number of defined benefit pension plans | Pension_Plan	1				1
Curtailment gain (loss)	$ 887,000		(1,303,000)	0
Voluntary contributions made	376,000		324,000
Minimum contributions required	0
Estimated benefit payments, in 2017	13,206,000
Estimated benefit payments, in 2018	13,535,000
Estimated benefit payments, in 2019	13,944,000
Estimated benefit payments, in 2020	14,195,000
Estimated benefit payments, in 2021	14,485,000
Estimated benefit payments, in 2022-2026	73,814,000
Fair value of plan assets	188,722,000		139,376,000	157,048,000
Accumulated benefit obligations	235,299,000		173,243,000
Projected benefit obligations	68,081,000		0
Reduction in plan liability	$ 0		447,000
U.S. Pension Benefits [Member] | Akers AB [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]
Number of defined benefit pension plans | Pension_Plan	2				2
Nonqualified Defined Benefit Pension Plan [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]
Minimum contributions expected in 2017	$ 0
Estimated benefit payments, in 2017	417,000
Estimated benefit payments, in 2018	438,000
Estimated benefit payments, in 2019	452,000
Estimated benefit payments, in 2020	463,000
Estimated benefit payments, in 2021	482,000
Estimated benefit payments, in 2022-2026	2,548,000
Accumulated benefit obligations	6,639,000		5,676,000
Defined benefit plan contribution made to trusts	0
Fair market value included in other noncurrent assets	3,863,000		3,663,000
Foreign Pension Benefits [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]
Curtailment gain (loss)	0		0	0
Voluntary contributions made	1,687,000		1,715,000	1,849,000
Estimated benefit payments, in 2017	1,249,000
Estimated benefit payments, in 2018	1,752,000
Estimated benefit payments, in 2019	2,042,000
Estimated benefit payments, in 2020	1,906,000
Estimated benefit payments, in 2021	1,883,000
Estimated benefit payments, in 2022-2026	11,679,000
Fair value of plan assets	48,055,000		49,628,000	50,533,000	£ 38,955	£ 33,528
Accumulated benefit obligations	61,277,000		63,750,000		£ 49,673	£ 43,069
Contributions to defined contribution pension plan	252,000		382,000	407,000
Contributions to the defined contribution pension plan expected in 2017	276,000
Projected benefit obligations	5,393,000		0
Reduction in plan liability	$ 0		0
Foreign Pension Benefits [Member] | Akers AB [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]
Number of defined benefit pension plans | Pension_Plan	2				2
Estimated benefit payments, in 2017	$ 189,000
Estimated benefit payments, in 2018	224,000
Estimated benefit payments, in 2019	274,000
Estimated benefit payments, in 2020	274,000
Estimated benefit payments, in 2021	306,000
Estimated benefit payments, in 2022-2026	1,333,000
Projected benefit obligations	5,633,000
Other Postretirement Benefits [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]
Curtailment gain (loss)	0		0	0
Voluntary contributions made	1,391,000		610,000
Estimated benefit payments, in 2017	1,289,000
Estimated benefit payments, in 2018	1,331,000
Estimated benefit payments, in 2019	1,358,000
Estimated benefit payments, in 2020	1,455,000
Estimated benefit payments, in 2021	1,279,000
Estimated benefit payments, in 2022-2026	5,825,000
Fair value of plan assets	0		0	$ 0
Projected benefit obligations	$ 17,467,000		$ 0
Number of subsidiary having postretirement health care benefits | Customer	1	1
Monthly reimbursement period			5 years
Reduction in plan liability	$ (4,762,000)		$ (4,437,000)
Percentage decrease in other postretirement benefits in 2018	4.75%	4.75%
Year related to decrease in health care cost trend rate	2,020				2,020
Percentage point increase or decrease in the assumed health care cost trend rate	1.00%	1.00%
Other Postretirement Benefits [Member] | Akers AB [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]
Reduction in pension liability due to exit from defined benefit plan	$ 4,762,000
Other Postretirement Benefits [Member] | Minimum [Member] | Akers AB [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]
Amortization period of pension liability	7 years 6 months	7 years 6 months
Other Postretirement Benefits [Member] | Maximum [Member] | Akers AB [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]
Amortization period of pension liability	12 years	12 years
Remeasurement of Pension Plan Liability [Member] | Electric Steel Corporation Carnegie [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]
Curtailment gain (loss)			(1,303,000)
Pension benefit plan decrease in liability			$ 10,306,000

Pension and Other Postretirem71

Pension and Other Postretirement Benefits - Schedule of Changes in Projected Benefit Obligations (PBO) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
U.S. Pension Benefits [Member]
Change in projected benefit obligations:
PBO, beginning balance	$ 181,803	$ 205,399
Åkers acquisition - PBO at March 3	68,081	0
Service cost	1,714	2,743	$ 3,683
Interest cost	9,977	7,990	8,762
Plan amendments	0	447
Plan settlements	(2,739)	(5,494)
Plan curtailments	(1,181)	(10,306)
Foreign currency exchange rate changes	0	0
Actuarial (gain) loss	(160)	(9,880)
Participant contributions	0	0
Benefits paid from plan assets	(12,679)	(8,772)
Benefits paid by the Corporation	(376)	(324)
PBO, Ending balance	244,440	181,803	205,399
Foreign Pension Benefits [Member]
Change in projected benefit obligations:
PBO, beginning balance	63,750	70,523
Åkers acquisition - PBO at March 3	5,393	0
Service cost	314	0	0
Interest cost	2,250	2,394	2,695
Plan amendments	0	0
Plan settlements	0	0
Plan curtailments	0	0
Foreign currency exchange rate changes	(11,477)	(3,413)
Actuarial (gain) loss	8,869	(4,005)
Participant contributions	0	0
Benefits paid from plan assets	(2,189)	(1,749)
Benefits paid by the Corporation	0	0
PBO, Ending balance	66,910	63,750	70,523
Other Postretirement Benefits [Member]
Change in projected benefit obligations:
PBO, beginning balance	8,117	13,739
Åkers acquisition - PBO at March 3	17,467	0
Service cost	504	384	505
Interest cost	722	474	688
Plan amendments	(4,762)	(4,437)
Plan settlements	0	0
Plan curtailments	0	0
Foreign currency exchange rate changes	0	0
Actuarial (gain) loss	(1,598)	(1,433)
Participant contributions	80	79
Benefits paid from plan assets	0	0
Benefits paid by the Corporation	(1,471)	(689)
PBO, Ending balance	$ 19,059	$ 8,117	$ 13,739

Pension and Other Postretirem72

Pension and Other Postretirement Benefits - Schedule of Changes in Plan Assets (Detail) £ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2016USD ($)	Dec. 31, 2016GBP (£)	Dec. 31, 2015USD ($)	Dec. 31, 2014USD ($)
U.S. Pension Benefits [Member]
Change in plan assets:
Fair value of plan assets, Beginning balance	$ 139,376		$ 157,048
Åkers acquisition - fair value of plan assets at March 3	50,108		0
Actual return on plan assets	14,656		(3,406)
Foreign currency exchange rate changes	0		0
Corporate contributions	376		324
Participant contributions	0		0
Plan settlements	(2,739)		(5,494)
Gross benefits paid	(13,055)		(9,096)
Fair value of plan assets, Ending balance	188,722		139,376	$ 157,048
Foreign Pension Benefits [Member]
Change in plan assets:
Fair value of plan assets, Beginning balance	49,628	£ 33,528	50,533
Åkers acquisition - fair value of plan assets at March 3	0		0
Actual return on plan assets	7,859		1,701
Foreign currency exchange rate changes	(8,930)		(2,572)
Corporate contributions	1,687		1,715	1,849
Participant contributions	0		0
Plan settlements	0		0
Gross benefits paid	(2,189)		(1,749)
Fair value of plan assets, Ending balance	48,055	£ 38,955	49,628	50,533
Other Postretirement Benefits [Member]
Change in plan assets:
Fair value of plan assets, Beginning balance	0		0
Åkers acquisition - fair value of plan assets at March 3	0		0
Actual return on plan assets	0		0
Foreign currency exchange rate changes	0		0
Corporate contributions	1,391		610
Participant contributions	80		79
Plan settlements	0		0
Gross benefits paid	(1,471)		(689)
Fair value of plan assets, Ending balance	$ 0		$ 0	$ 0

Pension and Other Postretirem73

Pension and Other Postretirement Benefits - Schedule of Net Funded Status of the Plans (Detail) £ in Thousands, $ in Thousands	Dec. 31, 2016USD ($)	Dec. 31, 2016GBP (£)	Dec. 31, 2015USD ($)	Dec. 31, 2015GBP (£)	Dec. 31, 2014USD ($)
U.S. Pension Benefits [Member]
Funded status of the plans:
Fair value of plan assets	$ 188,722		$ 139,376		$ 157,048
Less benefit obligations	244,440		181,803		205,399
Funded status at December 31	(55,718)		(42,427)
Foreign Pension Benefits [Member]
Funded status of the plans:
Fair value of plan assets	48,055	£ 38,955	49,628	£ 33,528	50,533
Less benefit obligations	66,910		63,750		70,523
Funded status at December 31	(18,855)		(14,122)
Other Postretirement Benefits [Member]
Funded status of the plans:
Fair value of plan assets	0		0		0
Less benefit obligations	19,059		8,117		$ 13,739
Funded status at December 31	$ (19,059)		$ (8,117)

Pension and Other Postretirem74

Pension and Other Postretirement Benefits - Schedule of Amounts Recognized in the Balance Sheets (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Employee benefit obligations:
Employee benefit obligations	$ (91,947)	$ (63,702)
U.S. Pension Benefits [Member]
Employee benefit obligations:
Accrued payrolls and employee benefits	(409)	(352)
Employee benefit obligations	(55,309)	(42,075)
Employee benefit obligations current and non current	(55,718)	(42,427)
Foreign Pension Benefits [Member]
Employee benefit obligations:
Accrued payrolls and employee benefits	0	0
Employee benefit obligations	(18,855)	(14,122)
Employee benefit obligations current and non current	(18,855)	(14,122)
Other Postretirement Benefits [Member]
Employee benefit obligations:
Accrued payrolls and employee benefits	(1,276)	(612)
Employee benefit obligations	(17,783)	(7,505)
Employee benefit obligations current and non current	$ (19,059)	$ (8,117)

Pension and Other Postretirem75

Pension and Other Postretirement Benefits - Schedule of Accumulated Other Comprehensive Loss (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
U.S. Pension Benefits [Member]
Accumulated other comprehensive loss:
Net actuarial loss	$ 48,153	$ 53,163
Prior service cost	209	237
Total	48,362	53,400
Foreign Pension Benefits [Member]
Accumulated other comprehensive loss:
Net actuarial loss	25,547	27,594
Prior service cost	0	0
Total	25,547	27,594
Other Postretirement Benefits [Member]
Accumulated other comprehensive loss:
Net actuarial loss	936	2,570
Prior service cost	(15,581)	(12,097)
Total	$ (14,645)	$ (9,527)

Pension and Other Postretirem76

Pension and Other Postretirement Benefits - Amounts Included in Accumulated Other Comprehensive Loss to be Recognized over Next Year (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2016USD ($)
U.S. Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Net actuarial loss	$ 1,212
Prior service cost (credit)	52
Total amounts included in accumulated other comprehensive loss to be recognized over next year	1,264
Foreign Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Net actuarial loss	790
Prior service cost (credit)	0
Total amounts included in accumulated other comprehensive loss to be recognized over next year	790
Other Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Net actuarial loss	67
Prior service cost (credit)	(1,620)
Total amounts included in accumulated other comprehensive loss to be recognized over next year	$ (1,553)

Pension and Other Postretirem77

Pension and Other Postretirement Benefits - Summary of Target Asset Allocations and Major Asset Categories (Detail)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
U.S. Pension Benefits [Member] | Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Target Allocation	65.00%
Percentage of Plan Assets	47.00%	58.00%
U.S. Pension Benefits [Member] | Fixed Income Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Target Allocation	15.00%
Percentage of Plan Assets	21.00%	19.00%
U.S. Pension Benefits [Member] | Alternative Investments [Member]
Defined Benefit Plan Disclosure [Line Items]
Target Allocation	15.00%
Percentage of Plan Assets	8.00%	13.00%
U.S. Pension Benefits [Member] | Other (Primarily Cash and Cash Equivalents) [Member]
Defined Benefit Plan Disclosure [Line Items]
Target Allocation	5.00%
Percentage of Plan Assets	24.00%	10.00%
Foreign Pension Benefits [Member] | Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Target Allocation	44.00%
Percentage of Plan Assets	48.00%	46.00%
Foreign Pension Benefits [Member] | Fixed Income Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Target Allocation	35.00%
Percentage of Plan Assets	34.00%	33.00%
Foreign Pension Benefits [Member] | Alternative Investments [Member]
Defined Benefit Plan Disclosure [Line Items]
Target Allocation	21.00%
Percentage of Plan Assets	18.00%	21.00%
Foreign Pension Benefits [Member] | Other (Primarily Cash and Cash Equivalents) [Member]
Defined Benefit Plan Disclosure [Line Items]
Target Allocation	0.00%
Percentage of Plan Assets	0.00%	0.00%

Pension and Other Postretirem78

Pension and Other Postretirement Benefits - Asset Categories Based on the Nature and Risks of the Plan Assets (Detail) £ in Thousands, $ in Thousands	Dec. 31, 2016USD ($)	Dec. 31, 2016GBP (£)	Dec. 31, 2015USD ($)	Dec. 31, 2015GBP (£)	Dec. 31, 2014USD ($)
Transportation [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	$ 18
Wholesale Distribution [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	16		$ 789
Fixed Income Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	36,601
Fixed Income Securities [Member] | Mutual Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	36,601
U.S. Pension Benefits [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	188,722		139,376		$ 157,048
U.S. Pension Benefits [Member] | Equity Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	74,215		68,208
U.S. Pension Benefits [Member] | Equity Securities [Member] | U.S. [Member] | Commercial Property [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets			906
U.S. Pension Benefits [Member] | Equity Securities [Member] | U.S. [Member] | Capital Goods [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	75		1,531
U.S. Pension Benefits [Member] | Equity Securities [Member] | U.S. [Member] | Chemicals [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	20		1,811
U.S. Pension Benefits [Member] | Equity Securities [Member] | U.S. [Member] | Commercial Services [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	16		925
U.S. Pension Benefits [Member] | Equity Securities [Member] | U.S. [Member] | Common Collective Trust Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets			31,291
U.S. Pension Benefits [Member] | Equity Securities [Member] | U.S. [Member] | Electronics [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	67		785
U.S. Pension Benefits [Member] | Equity Securities [Member] | U.S. [Member] | Food Processing [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets			2,856
U.S. Pension Benefits [Member] | Equity Securities [Member] | U.S. [Member] | Health Care [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	201		1,815
U.S. Pension Benefits [Member] | Equity Securities [Member] | U.S. [Member] | Limited Partnerships - Public Equity [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets			4,173
U.S. Pension Benefits [Member] | Equity Securities [Member] | U.S. [Member] | Manufacturing [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets			1,536
U.S. Pension Benefits [Member] | Equity Securities [Member] | U.S. [Member] | Oil & Gas [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	87		1,499
U.S. Pension Benefits [Member] | Equity Securities [Member] | U.S. [Member] | Retail [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	101		706
U.S. Pension Benefits [Member] | Equity Securities [Member] | U.S. [Member] | Technology [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	188		1,674
U.S. Pension Benefits [Member] | Equity Securities [Member] | U.S. [Member] | Transportation [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets			484
U.S. Pension Benefits [Member] | Equity Securities [Member] | U.S. [Member] | U.S., Other [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	211		5,695
U.S. Pension Benefits [Member] | Equity Securities [Member] | U.S. [Member] | Bank & Financial Services [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	631
U.S. Pension Benefits [Member] | Equity Securities [Member] | U.S. [Member] | Mutual Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	72,571
U.S. Pension Benefits [Member] | Equity Securities [Member] | International [Member] | Chemicals [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	7
U.S. Pension Benefits [Member] | Equity Securities [Member] | International [Member] | Common Collective Trust Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets			3,078
U.S. Pension Benefits [Member] | Equity Securities [Member] | International [Member] | Oil & Gas [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets			807
U.S. Pension Benefits [Member] | Equity Securities [Member] | International [Member] | Technology [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	6		265
U.S. Pension Benefits [Member] | Equity Securities [Member] | International [Member] | Bank & Financial Services [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets			1,525
U.S. Pension Benefits [Member] | Equity Securities [Member] | International [Member] | Engineering & Construction [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets			729
U.S. Pension Benefits [Member] | Equity Securities [Member] | International [Member] | Real Estate [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets			937
U.S. Pension Benefits [Member] | Equity Securities [Member] | International [Member] | International, Other [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets			2,391
U.S. Pension Benefits [Member] | Fixed Income Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets			22,666
U.S. Pension Benefits [Member] | Fixed Income Securities [Member] | Commingled Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets			14,697
U.S. Pension Benefits [Member] | Fixed Income Securities [Member] | Preferred (Fixed Income Securities) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets			6,689
U.S. Pension Benefits [Member] | Fixed Income Securities [Member] | Other (Fixed Income Securities) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets			1,280
U.S. Pension Benefits [Member] | Alternative Investments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	33,830		37,177
U.S. Pension Benefits [Member] | Alternative Investments [Member] | Hedge and Absolute Return Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets			4,967
U.S. Pension Benefits [Member] | Alternative Investments [Member] | Managed Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	33,830		32,210
U.S. Pension Benefits [Member] | Other (Primarily Cash and Cash Equivalents) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	44,076		11,325
U.S. Pension Benefits [Member] | Other (Primarily Cash and Cash Equivalents) [Member] | Commingled Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	154		1,005
U.S. Pension Benefits [Member] | Other (Primarily Cash and Cash Equivalents) [Member] | Mutual Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets			1,836
U.S. Pension Benefits [Member] | Other (Primarily Cash and Cash Equivalents) [Member] | Other [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	16,020		8,484
U.S. Pension Benefits [Member] | Other (Primarily Cash and Cash Equivalents) [Member] | Money Market Mutual Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	27,902
Foreign Pension Benefits [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	48,055	£ 38,955	49,628	£ 33,528	50,533
Foreign Pension Benefits [Member] | Equity Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	22,862		22,627
Foreign Pension Benefits [Member] | Equity Securities [Member] | International [Member] | Commingled Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	19,146		18,930
Foreign Pension Benefits [Member] | Equity Securities [Member] | U.K. [Member] | Commingled Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	3,716		3,697
Foreign Pension Benefits [Member] | Fixed Income Securities [Member] | U.K. [Member] | Commingled Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	16,426		16,298
Foreign Pension Benefits [Member] | Alternative Investments [Member] | Hedge and Absolute Return Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	8,593		10,571
Foreign Pension Benefits [Member] | Other (Primarily Cash and Cash Equivalents) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	174		132
Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Transportation [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	18
Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Wholesale Distribution [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	16		789
Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Fixed Income Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	36,601
Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Fixed Income Securities [Member] | Mutual Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	36,601
Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | U.S. Pension Benefits [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	154,738		50,848
Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | U.S. Pension Benefits [Member] | Equity Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	74,215		33,839
Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | U.S. Pension Benefits [Member] | Equity Securities [Member] | U.S. [Member] | Commercial Property [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets			906
Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | U.S. Pension Benefits [Member] | Equity Securities [Member] | U.S. [Member] | Capital Goods [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	75		1,531
Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | U.S. Pension Benefits [Member] | Equity Securities [Member] | U.S. [Member] | Chemicals [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	20		1,811
Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | U.S. Pension Benefits [Member] | Equity Securities [Member] | U.S. [Member] | Commercial Services [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	16		925
Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | U.S. Pension Benefits [Member] | Equity Securities [Member] | U.S. [Member] | Common Collective Trust Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets			0
Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | U.S. Pension Benefits [Member] | Equity Securities [Member] | U.S. [Member] | Electronics [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	67		785
Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | U.S. Pension Benefits [Member] | Equity Securities [Member] | U.S. [Member] | Food Processing [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets			2,856
Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | U.S. Pension Benefits [Member] | Equity Securities [Member] | U.S. [Member] | Health Care [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	201		1,815
Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | U.S. Pension Benefits [Member] | Equity Securities [Member] | U.S. [Member] | Limited Partnerships - Public Equity [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets			4,173
Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | U.S. Pension Benefits [Member] | Equity Securities [Member] | U.S. [Member] | Manufacturing [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets			1,536
Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | U.S. Pension Benefits [Member] | Equity Securities [Member] | U.S. [Member] | Oil & Gas [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	87		1,499
Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | U.S. Pension Benefits [Member] | Equity Securities [Member] | U.S. [Member] | Retail [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	101		706
Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | U.S. Pension Benefits [Member] | Equity Securities [Member] | U.S. [Member] | Technology [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	188		1,674
Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | U.S. Pension Benefits [Member] | Equity Securities [Member] | U.S. [Member] | Transportation [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets			484
Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | U.S. Pension Benefits [Member] | Equity Securities [Member] | U.S. [Member] | U.S., Other [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	211		5,695
Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | U.S. Pension Benefits [Member] | Equity Securities [Member] | U.S. [Member] | Bank & Financial Services [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	631
Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | U.S. Pension Benefits [Member] | Equity Securities [Member] | U.S. [Member] | Mutual Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	72,571
Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | U.S. Pension Benefits [Member] | Equity Securities [Member] | International [Member] | Chemicals [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	7
Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | U.S. Pension Benefits [Member] | Equity Securities [Member] | International [Member] | Common Collective Trust Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets			0
Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | U.S. Pension Benefits [Member] | Equity Securities [Member] | International [Member] | Oil & Gas [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets			807
Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | U.S. Pension Benefits [Member] | Equity Securities [Member] | International [Member] | Technology [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	6		265
Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | U.S. Pension Benefits [Member] | Equity Securities [Member] | International [Member] | Bank & Financial Services [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets			1,525
Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | U.S. Pension Benefits [Member] | Equity Securities [Member] | International [Member] | Engineering & Construction [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets			729
Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | U.S. Pension Benefits [Member] | Equity Securities [Member] | International [Member] | Real Estate [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets			937
Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | U.S. Pension Benefits [Member] | Equity Securities [Member] | International [Member] | International, Other [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets			2,391
Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | U.S. Pension Benefits [Member] | Fixed Income Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets			6,689
Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | U.S. Pension Benefits [Member] | Fixed Income Securities [Member] | Commingled Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets			0
Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | U.S. Pension Benefits [Member] | Fixed Income Securities [Member] | Preferred (Fixed Income Securities) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets			6,689
Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | U.S. Pension Benefits [Member] | Fixed Income Securities [Member] | Other (Fixed Income Securities) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets			0
Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | U.S. Pension Benefits [Member] | Alternative Investments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	0		0
Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | U.S. Pension Benefits [Member] | Alternative Investments [Member] | Hedge and Absolute Return Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets			0
Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | U.S. Pension Benefits [Member] | Alternative Investments [Member] | Managed Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	0		0
Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | U.S. Pension Benefits [Member] | Other (Primarily Cash and Cash Equivalents) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	43,922		10,320
Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | U.S. Pension Benefits [Member] | Other (Primarily Cash and Cash Equivalents) [Member] | Commingled Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	0		0
Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | U.S. Pension Benefits [Member] | Other (Primarily Cash and Cash Equivalents) [Member] | Mutual Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets			1,836
Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | U.S. Pension Benefits [Member] | Other (Primarily Cash and Cash Equivalents) [Member] | Other [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	16,020		8,484
Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | U.S. Pension Benefits [Member] | Other (Primarily Cash and Cash Equivalents) [Member] | Money Market Mutual Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	27,902
Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Foreign Pension Benefits [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	174		132
Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Foreign Pension Benefits [Member] | Equity Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	0		0
Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Foreign Pension Benefits [Member] | Equity Securities [Member] | International [Member] | Commingled Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	0		0
Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Foreign Pension Benefits [Member] | Equity Securities [Member] | U.K. [Member] | Commingled Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	0		0
Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Foreign Pension Benefits [Member] | Fixed Income Securities [Member] | U.K. [Member] | Commingled Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	0		0
Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Foreign Pension Benefits [Member] | Alternative Investments [Member] | Hedge and Absolute Return Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	0		0
Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Foreign Pension Benefits [Member] | Other (Primarily Cash and Cash Equivalents) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	174		132
Significant Other Observable Inputs (Level 2) [Member] | Transportation [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	0
Significant Other Observable Inputs (Level 2) [Member] | Wholesale Distribution [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	0		0
Significant Other Observable Inputs (Level 2) [Member] | Fixed Income Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	0
Significant Other Observable Inputs (Level 2) [Member] | Fixed Income Securities [Member] | Mutual Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	0
Significant Other Observable Inputs (Level 2) [Member] | U.S. Pension Benefits [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	154		51,351
Significant Other Observable Inputs (Level 2) [Member] | U.S. Pension Benefits [Member] | Equity Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	0		34,369
Significant Other Observable Inputs (Level 2) [Member] | U.S. Pension Benefits [Member] | Equity Securities [Member] | U.S. [Member] | Commercial Property [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets			0
Significant Other Observable Inputs (Level 2) [Member] | U.S. Pension Benefits [Member] | Equity Securities [Member] | U.S. [Member] | Capital Goods [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	0		0
Significant Other Observable Inputs (Level 2) [Member] | U.S. Pension Benefits [Member] | Equity Securities [Member] | U.S. [Member] | Chemicals [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	0		0
Significant Other Observable Inputs (Level 2) [Member] | U.S. Pension Benefits [Member] | Equity Securities [Member] | U.S. [Member] | Commercial Services [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	0		0
Significant Other Observable Inputs (Level 2) [Member] | U.S. Pension Benefits [Member] | Equity Securities [Member] | U.S. [Member] | Common Collective Trust Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets			31,291
Significant Other Observable Inputs (Level 2) [Member] | U.S. Pension Benefits [Member] | Equity Securities [Member] | U.S. [Member] | Electronics [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	0		0
Significant Other Observable Inputs (Level 2) [Member] | U.S. Pension Benefits [Member] | Equity Securities [Member] | U.S. [Member] | Food Processing [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets			0
Significant Other Observable Inputs (Level 2) [Member] | U.S. Pension Benefits [Member] | Equity Securities [Member] | U.S. [Member] | Health Care [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	0		0
Significant Other Observable Inputs (Level 2) [Member] | U.S. Pension Benefits [Member] | Equity Securities [Member] | U.S. [Member] | Limited Partnerships - Public Equity [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets			0
Significant Other Observable Inputs (Level 2) [Member] | U.S. Pension Benefits [Member] | Equity Securities [Member] | U.S. [Member] | Manufacturing [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets			0
Significant Other Observable Inputs (Level 2) [Member] | U.S. Pension Benefits [Member] | Equity Securities [Member] | U.S. [Member] | Oil & Gas [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	0		0
Significant Other Observable Inputs (Level 2) [Member] | U.S. Pension Benefits [Member] | Equity Securities [Member] | U.S. [Member] | Retail [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	0		0
Significant Other Observable Inputs (Level 2) [Member] | U.S. Pension Benefits [Member] | Equity Securities [Member] | U.S. [Member] | Technology [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	0		0
Significant Other Observable Inputs (Level 2) [Member] | U.S. Pension Benefits [Member] | Equity Securities [Member] | U.S. [Member] | Transportation [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets			0
Significant Other Observable Inputs (Level 2) [Member] | U.S. Pension Benefits [Member] | Equity Securities [Member] | U.S. [Member] | U.S., Other [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	0		0
Significant Other Observable Inputs (Level 2) [Member] | U.S. Pension Benefits [Member] | Equity Securities [Member] | U.S. [Member] | Bank & Financial Services [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	0
Significant Other Observable Inputs (Level 2) [Member] | U.S. Pension Benefits [Member] | Equity Securities [Member] | U.S. [Member] | Mutual Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	0
Significant Other Observable Inputs (Level 2) [Member] | U.S. Pension Benefits [Member] | Equity Securities [Member] | International [Member] | Chemicals [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	0
Significant Other Observable Inputs (Level 2) [Member] | U.S. Pension Benefits [Member] | Equity Securities [Member] | International [Member] | Common Collective Trust Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets			3,078
Significant Other Observable Inputs (Level 2) [Member] | U.S. Pension Benefits [Member] | Equity Securities [Member] | International [Member] | Oil & Gas [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets			0
Significant Other Observable Inputs (Level 2) [Member] | U.S. Pension Benefits [Member] | Equity Securities [Member] | International [Member] | Technology [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	0		0
Significant Other Observable Inputs (Level 2) [Member] | U.S. Pension Benefits [Member] | Equity Securities [Member] | International [Member] | Bank & Financial Services [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets			0
Significant Other Observable Inputs (Level 2) [Member] | U.S. Pension Benefits [Member] | Equity Securities [Member] | International [Member] | Engineering & Construction [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets			0
Significant Other Observable Inputs (Level 2) [Member] | U.S. Pension Benefits [Member] | Equity Securities [Member] | International [Member] | Real Estate [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets			0
Significant Other Observable Inputs (Level 2) [Member] | U.S. Pension Benefits [Member] | Equity Securities [Member] | International [Member] | International, Other [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets			0
Significant Other Observable Inputs (Level 2) [Member] | U.S. Pension Benefits [Member] | Fixed Income Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets			15,977
Significant Other Observable Inputs (Level 2) [Member] | U.S. Pension Benefits [Member] | Fixed Income Securities [Member] | Commingled Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets			14,697
Significant Other Observable Inputs (Level 2) [Member] | U.S. Pension Benefits [Member] | Fixed Income Securities [Member] | Preferred (Fixed Income Securities) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets			0
Significant Other Observable Inputs (Level 2) [Member] | U.S. Pension Benefits [Member] | Fixed Income Securities [Member] | Other (Fixed Income Securities) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets			1,280
Significant Other Observable Inputs (Level 2) [Member] | U.S. Pension Benefits [Member] | Alternative Investments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	0		0
Significant Other Observable Inputs (Level 2) [Member] | U.S. Pension Benefits [Member] | Alternative Investments [Member] | Hedge and Absolute Return Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets			0
Significant Other Observable Inputs (Level 2) [Member] | U.S. Pension Benefits [Member] | Alternative Investments [Member] | Managed Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	0		0
Significant Other Observable Inputs (Level 2) [Member] | U.S. Pension Benefits [Member] | Other (Primarily Cash and Cash Equivalents) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	154		1,005
Significant Other Observable Inputs (Level 2) [Member] | U.S. Pension Benefits [Member] | Other (Primarily Cash and Cash Equivalents) [Member] | Commingled Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	154		1,005
Significant Other Observable Inputs (Level 2) [Member] | U.S. Pension Benefits [Member] | Other (Primarily Cash and Cash Equivalents) [Member] | Mutual Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets			0
Significant Other Observable Inputs (Level 2) [Member] | U.S. Pension Benefits [Member] | Other (Primarily Cash and Cash Equivalents) [Member] | Other [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	0		0
Significant Other Observable Inputs (Level 2) [Member] | U.S. Pension Benefits [Member] | Other (Primarily Cash and Cash Equivalents) [Member] | Money Market Mutual Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	0
Significant Other Observable Inputs (Level 2) [Member] | Foreign Pension Benefits [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	39,288		38,925
Significant Other Observable Inputs (Level 2) [Member] | Foreign Pension Benefits [Member] | Equity Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	22,862		22,627
Significant Other Observable Inputs (Level 2) [Member] | Foreign Pension Benefits [Member] | Equity Securities [Member] | International [Member] | Commingled Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	19,146		18,930
Significant Other Observable Inputs (Level 2) [Member] | Foreign Pension Benefits [Member] | Equity Securities [Member] | U.K. [Member] | Commingled Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	3,716		3,697
Significant Other Observable Inputs (Level 2) [Member] | Foreign Pension Benefits [Member] | Fixed Income Securities [Member] | U.K. [Member] | Commingled Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	16,426		16,298
Significant Other Observable Inputs (Level 2) [Member] | Foreign Pension Benefits [Member] | Alternative Investments [Member] | Hedge and Absolute Return Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	0		0
Significant Other Observable Inputs (Level 2) [Member] | Foreign Pension Benefits [Member] | Other (Primarily Cash and Cash Equivalents) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	0		0
Significant Unobservable Inputs (Level 3) [Member] | Transportation [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	0
Significant Unobservable Inputs (Level 3) [Member] | Wholesale Distribution [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	0		0
Significant Unobservable Inputs (Level 3) [Member] | Fixed Income Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	0
Significant Unobservable Inputs (Level 3) [Member] | Fixed Income Securities [Member] | Mutual Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	0
Significant Unobservable Inputs (Level 3) [Member] | U.S. Pension Benefits [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	33,830		37,177
Significant Unobservable Inputs (Level 3) [Member] | U.S. Pension Benefits [Member] | Hedge and Absolute Return Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	0		4,967		8,592
Significant Unobservable Inputs (Level 3) [Member] | U.S. Pension Benefits [Member] | Equity Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	0		0
Significant Unobservable Inputs (Level 3) [Member] | U.S. Pension Benefits [Member] | Equity Securities [Member] | U.S. [Member] | Commercial Property [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets			0
Significant Unobservable Inputs (Level 3) [Member] | U.S. Pension Benefits [Member] | Equity Securities [Member] | U.S. [Member] | Capital Goods [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	0		0
Significant Unobservable Inputs (Level 3) [Member] | U.S. Pension Benefits [Member] | Equity Securities [Member] | U.S. [Member] | Chemicals [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	0		0
Significant Unobservable Inputs (Level 3) [Member] | U.S. Pension Benefits [Member] | Equity Securities [Member] | U.S. [Member] | Commercial Services [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	0		0
Significant Unobservable Inputs (Level 3) [Member] | U.S. Pension Benefits [Member] | Equity Securities [Member] | U.S. [Member] | Common Collective Trust Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets			0
Significant Unobservable Inputs (Level 3) [Member] | U.S. Pension Benefits [Member] | Equity Securities [Member] | U.S. [Member] | Electronics [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	0		0
Significant Unobservable Inputs (Level 3) [Member] | U.S. Pension Benefits [Member] | Equity Securities [Member] | U.S. [Member] | Food Processing [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets			0
Significant Unobservable Inputs (Level 3) [Member] | U.S. Pension Benefits [Member] | Equity Securities [Member] | U.S. [Member] | Health Care [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	0		0
Significant Unobservable Inputs (Level 3) [Member] | U.S. Pension Benefits [Member] | Equity Securities [Member] | U.S. [Member] | Limited Partnerships - Public Equity [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets			0
Significant Unobservable Inputs (Level 3) [Member] | U.S. Pension Benefits [Member] | Equity Securities [Member] | U.S. [Member] | Manufacturing [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets			0
Significant Unobservable Inputs (Level 3) [Member] | U.S. Pension Benefits [Member] | Equity Securities [Member] | U.S. [Member] | Oil & Gas [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	0		0
Significant Unobservable Inputs (Level 3) [Member] | U.S. Pension Benefits [Member] | Equity Securities [Member] | U.S. [Member] | Retail [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	0		0
Significant Unobservable Inputs (Level 3) [Member] | U.S. Pension Benefits [Member] | Equity Securities [Member] | U.S. [Member] | Technology [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	0		0
Significant Unobservable Inputs (Level 3) [Member] | U.S. Pension Benefits [Member] | Equity Securities [Member] | U.S. [Member] | Transportation [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets			0
Significant Unobservable Inputs (Level 3) [Member] | U.S. Pension Benefits [Member] | Equity Securities [Member] | U.S. [Member] | U.S., Other [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	0		0
Significant Unobservable Inputs (Level 3) [Member] | U.S. Pension Benefits [Member] | Equity Securities [Member] | U.S. [Member] | Bank & Financial Services [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	0
Significant Unobservable Inputs (Level 3) [Member] | U.S. Pension Benefits [Member] | Equity Securities [Member] | U.S. [Member] | Mutual Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	0
Significant Unobservable Inputs (Level 3) [Member] | U.S. Pension Benefits [Member] | Equity Securities [Member] | International [Member] | Chemicals [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	0
Significant Unobservable Inputs (Level 3) [Member] | U.S. Pension Benefits [Member] | Equity Securities [Member] | International [Member] | Common Collective Trust Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets			0
Significant Unobservable Inputs (Level 3) [Member] | U.S. Pension Benefits [Member] | Equity Securities [Member] | International [Member] | Oil & Gas [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets			0
Significant Unobservable Inputs (Level 3) [Member] | U.S. Pension Benefits [Member] | Equity Securities [Member] | International [Member] | Technology [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	0		0
Significant Unobservable Inputs (Level 3) [Member] | U.S. Pension Benefits [Member] | Equity Securities [Member] | International [Member] | Bank & Financial Services [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets			0
Significant Unobservable Inputs (Level 3) [Member] | U.S. Pension Benefits [Member] | Equity Securities [Member] | International [Member] | Engineering & Construction [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets			0
Significant Unobservable Inputs (Level 3) [Member] | U.S. Pension Benefits [Member] | Equity Securities [Member] | International [Member] | Real Estate [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets			0
Significant Unobservable Inputs (Level 3) [Member] | U.S. Pension Benefits [Member] | Equity Securities [Member] | International [Member] | International, Other [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets			0
Significant Unobservable Inputs (Level 3) [Member] | U.S. Pension Benefits [Member] | Fixed Income Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets			0
Significant Unobservable Inputs (Level 3) [Member] | U.S. Pension Benefits [Member] | Fixed Income Securities [Member] | Commingled Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets			0
Significant Unobservable Inputs (Level 3) [Member] | U.S. Pension Benefits [Member] | Fixed Income Securities [Member] | Preferred (Fixed Income Securities) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets			0
Significant Unobservable Inputs (Level 3) [Member] | U.S. Pension Benefits [Member] | Fixed Income Securities [Member] | Other (Fixed Income Securities) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets			0
Significant Unobservable Inputs (Level 3) [Member] | U.S. Pension Benefits [Member] | Alternative Investments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	33,830		37,177
Significant Unobservable Inputs (Level 3) [Member] | U.S. Pension Benefits [Member] | Alternative Investments [Member] | Hedge and Absolute Return Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets			4,967
Significant Unobservable Inputs (Level 3) [Member] | U.S. Pension Benefits [Member] | Alternative Investments [Member] | Managed Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	33,830		32,210
Significant Unobservable Inputs (Level 3) [Member] | U.S. Pension Benefits [Member] | Other (Primarily Cash and Cash Equivalents) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	0		0
Significant Unobservable Inputs (Level 3) [Member] | U.S. Pension Benefits [Member] | Other (Primarily Cash and Cash Equivalents) [Member] | Commingled Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	0		0
Significant Unobservable Inputs (Level 3) [Member] | U.S. Pension Benefits [Member] | Other (Primarily Cash and Cash Equivalents) [Member] | Mutual Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets			0
Significant Unobservable Inputs (Level 3) [Member] | U.S. Pension Benefits [Member] | Other (Primarily Cash and Cash Equivalents) [Member] | Other [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	0		0
Significant Unobservable Inputs (Level 3) [Member] | U.S. Pension Benefits [Member] | Other (Primarily Cash and Cash Equivalents) [Member] | Money Market Mutual Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	0
Significant Unobservable Inputs (Level 3) [Member] | Foreign Pension Benefits [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	8,593		10,571		$ 10,799
Significant Unobservable Inputs (Level 3) [Member] | Foreign Pension Benefits [Member] | Equity Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	0		0
Significant Unobservable Inputs (Level 3) [Member] | Foreign Pension Benefits [Member] | Equity Securities [Member] | International [Member] | Commingled Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	0		0
Significant Unobservable Inputs (Level 3) [Member] | Foreign Pension Benefits [Member] | Equity Securities [Member] | U.K. [Member] | Commingled Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	0		0
Significant Unobservable Inputs (Level 3) [Member] | Foreign Pension Benefits [Member] | Fixed Income Securities [Member] | U.K. [Member] | Commingled Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	0		0
Significant Unobservable Inputs (Level 3) [Member] | Foreign Pension Benefits [Member] | Alternative Investments [Member] | Hedge and Absolute Return Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	8,593		10,571
Significant Unobservable Inputs (Level 3) [Member] | Foreign Pension Benefits [Member] | Other (Primarily Cash and Cash Equivalents) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset categories based on the nature and risks of the plans assets	$ 0		$ 0

Pension and Other Postretirem79

Pension and Other Postretirement Benefits - Asset Categories Based on the Nature and Risks of the Plan Assets (Parenthetical) (Detail) - U.S. Pension Benefits [Member]	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Equity Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Percentage of managed fund	65.00%
Equity Securities [Member] | Managed Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Percentage of managed fund	45.90%	38.00%
Fixed Income Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Percentage of managed fund	15.00%
Fixed Income Securities [Member] | Managed Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Percentage of managed fund	7.40%
Alternative Investments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Percentage of managed fund	15.00%
Alternative Investments [Member] | Managed Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Percentage of managed fund	44.50%	43.00%
Fixed Income and Cash and Cash Equivalents [Member] | Managed Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Percentage of managed fund		19.00%
Other, Primarily Cash And Cash Equivalents [Member] | Managed Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Percentage of managed fund	2.20%

Pension and Other Postretirem80

Pension and Other Postretirement Benefits - Summary of Changes in the Fair Value of the Level 3 Plan Assets for U.S. and Foreign Pension Plans (Detail) £ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2016USD ($)	Dec. 31, 2016GBP (£)	Dec. 31, 2015USD ($)	Dec. 31, 2014USD ($)
U.S. Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, Beginning balance	$ 139,376		$ 157,048
Contributions	376		324
Change in net unrealized (losses) gains	(160)		(9,880)
Other, primarily impact from changes in foreign currency exchange rates	0		0
Fair value of plan assets, Ending balance	188,722		139,376	$ 157,048
U.S. Pension Benefits [Member] | Significant Unobservable Inputs (Level 3) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, Beginning balance	37,177
Fair value of plan assets, Ending balance	33,830		37,177
U.S. Pension Benefits [Member] | Significant Unobservable Inputs (Level 3) [Member] | Hedge and Absolute Return Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, Beginning balance	4,967		8,592
Contributions	0		5,900
Withdrawals	(4,967)		(9,843)
Realized gains (losses)	0		2,334
Change in net unrealized (losses) gains	0		(2,016)
Other, primarily impact from changes in foreign currency exchange rates	0		0
Fair value of plan assets, Ending balance	0		4,967	8,592
U.S. Pension Benefits [Member] | Managed Funds [Member] | Significant Unobservable Inputs (Level 3) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, Beginning balance	32,210		33,602
Contributions	0		0
Withdrawals	0		(2,424)
Realized gains (losses)	1,857		(19)
Change in net unrealized (losses) gains	(237)		1,051
Other, primarily impact from changes in foreign currency exchange rates	0		0
Fair value of plan assets, Ending balance	33,830		32,210	33,602
Foreign Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, Beginning balance	49,628	£ 33,528	50,533
Contributions	1,687		1,715	1,849
Change in net unrealized (losses) gains	8,869		(4,005)
Other, primarily impact from changes in foreign currency exchange rates	(8,930)		(2,572)
Fair value of plan assets, Ending balance	48,055	£ 38,955	49,628	50,533
Foreign Pension Benefits [Member] | Significant Unobservable Inputs (Level 3) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, Beginning balance	10,571		10,799
Contributions	0		0
Withdrawals	0		0
Realized gains (losses)	0		0
Change in net unrealized (losses) gains	(280)		320
Other, primarily impact from changes in foreign currency exchange rates	(1,698)		(548)
Fair value of plan assets, Ending balance	$ 8,593		$ 10,571	$ 10,799

Pension and Other Postretirem81

Pension and Other Postretirement Benefits - Net Periodic Pension and Other Postretirement Benefit Costs (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
U.S. Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 1,714	$ 2,743	$ 3,683
Interest cost	9,977	7,990	8,762
Expected return on plan assets	(13,424)	(10,996)	(10,747)
Amortization of:
Prior service cost (credit)	44	371	854
Actuarial loss	3,324	5,440	4,183
Curtailment (gain) loss	(887)	1,303	0
Net cost	748	6,851	6,735
Foreign Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	314	0	0
Interest cost	2,250	2,394	2,695
Expected return on plan assets	(2,461)	(2,681)	(3,157)
Amortization of:
Prior service cost (credit)	0	0	0
Actuarial loss	670	845	599
Curtailment (gain) loss	0	0	0
Net cost	773	558	137
Other Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	504	384	505
Interest cost	722	474	688
Expected return on plan assets	0	0	0
Amortization of:
Prior service cost (credit)	(1,277)	(672)	(441)
Actuarial loss	36	26	104
Curtailment (gain) loss	0	0	0
Net cost	$ (15)	$ 212	$ 856

Pension and Other Postretirem82

Pension and Other Postretirement Benefits - Discount Rates and Weighted-Average Wage Increases Used to Determine the Benefit Obligations (Detail)	Dec. 31, 2016	Dec. 31, 2015
U.S. Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate		4.40%
Wage increases	3.00%	3.00%
U.S. Pension Benefits [Member] | Minimum [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate	4.02%
U.S. Pension Benefits [Member] | Maximum [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate	4.25%
Foreign Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate		3.65%
Foreign Pension Benefits [Member] | Minimum [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate	2.50%
Foreign Pension Benefits [Member] | Maximum [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate	2.65%
Other Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate		4.20%
Other Postretirement Benefits [Member] | Minimum [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate	3.90%
Other Postretirement Benefits [Member] | Maximum [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate	4.13%

Pension and Other Postretirem83

Pension and Other Postretirement Benefits - Assumptions Regarding Net Periodic Pension and Other Postretirement Benefit Costs (Detail)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
U.S. Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate			5.00%
Expected long-term rate of return		8.00%	8.00%
Wages increases	3.00%	4.00%	4.00%
U.S. Pension Benefits [Member] | Minimum [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate	4.20%	4.00%
Expected long-term rate of return	6.90%
U.S. Pension Benefits [Member] | Maximum [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate	4.40%	4.10%
Expected long-term rate of return	7.75%
Foreign Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate		3.50%	4.50%
Expected long-term rate of return	5.40%	5.40%	6.50%
Foreign Pension Benefits [Member] | Minimum [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate	3.00%
Foreign Pension Benefits [Member] | Maximum [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate	3.65%
Other Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate		4.00%	5.00%
Other Postretirement Benefits [Member] | Minimum [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate	3.80%
Other Postretirement Benefits [Member] | Maximum [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate	4.20%

Commitments and Contingent Li84

Commitments and Contingent Liabilities - Additional Information (Detail) SEK in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2016USD ($)Bonds	Dec. 31, 2016SEK
Commitments and Contingent Liabilities [Line Items]
Outstanding standby and commercial letters of credit | $	$ 22,305
Percentage on employees covered by collective bargaining agreements	38.00%	38.00%
Bargaining agreement beginning expiration year	2017-09
Bargaining agreement ending expiration year	2020-02
Akers AB [Member]
Commitments and Contingent Liabilities [Line Items]
Number of surety bonds issued | Bonds	2
Amount covered by guarantees	$ 4,000	SEK 33,900
Collective Bargaining Agreement Two [Member]
Commitments and Contingent Liabilities [Line Items]
Percentage of covered employees	28.00%

Stock-Based Compensation - Addi

Stock-Based Compensation - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	May 31, 2016	May 31, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity based awards grant date fair value			$ 7.40
Restricted stock units vesting period, years	3 years
Unrecognized stock-based compensation expense	$ 120
Shares Under Options, Granted			176,000
Stock options life, years	4 years 2 months 12 days	5 years 2 months 12 days
Exercise price of stock option	$ 0		$ 20
Expected life of stock option	6 years
Risk-free interest rate			1.98%
Expected annual dividend yield			3.60%
Expected forfeiture rate			8.00%
Expected volatility			53.02%
Stock-based compensation expense	$ 2,332	$ 1,328	$ 1,199
Income tax benefit from stock-based compensation expense		$ 465	$ 386
Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized under Omnibus Incentive Plan				1,100,000
Number of shares available for issuance	2,500
Equity based awards grant date fair value	$ 200
Shares of common stock issued to non-employee directors	32,090
Predecessor Plans [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized under Omnibus Incentive Plan					1,000,000
Number of shares granted under Omnibus Incentive Plan				0
Shares of common stock issued to non-employee directors		14,310	12,500
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock units vesting period, years	3 years
Unrecognized stock-based compensation expense to be recognized in period, years	2 years
Unrecognized stock-based compensation expense	$ 2,897
Performance-based Restricted Stock Units (PSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Cumulative earnings achievement period	3 years
PSUs earning conditions	(1) achievement of a targeted basic earnings per share during the performance period beginning in the year of grant and continuing for two subsequent years, (2) achievement of a three-year cumulative relative total shareholder return as ranked against other companies included in the Corporation's peer group and (3) remaining continuously employed with the Corporation through the end of the year following three years from the date of grant.
Unrecognized stock-based compensation expense to be recognized in period, years	2 years
Unrecognized stock-based compensation expense	$ 2,897
Non-Qualified Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options life, years	10 years

Stock-Based Compensation - Summ

Stock-Based Compensation - Summary of Outstanding and Exercisable Incentive Options (RSUs and PSUs) (Detail)	12 Months Ended
	Dec. 31, 2016$ / sharesshares
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of incentive options, Outstanding, Beginning balance | shares	90,836
Number of incentive options, Granted | shares	94,644
Number of incentive options, Converted | shares	(29,635)
Number of incentive options, Forfeited/cancelled | shares	0
Number of incentive options, Outstanding, Ending balance | shares	155,845
Weighted Average Fair Value of incentive options, Outstanding, Beginning balance | $ / shares	$ 15.72
Weighted Average Fair Value of incentive options, Granted | $ / shares	18.70
Weighted Average Fair Value of incentive options, Converted | $ / shares	15.72
Weighted Average Fair Value of incentive options, Forfeited/cancelled | $ / shares	0
Weighted Average Fair Value of incentive options, Outstanding, Ending Balance | $ / shares	$ 17.53
Performance-based Restricted Stock Units (PSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of incentive options, Outstanding, Beginning balance | shares	26,263
Number of incentive options, Granted | shares	21,164
Number of incentive options, Converted | shares	0
Number of incentive options, Forfeited/cancelled | shares	(8,079)
Number of incentive options, Outstanding, Ending balance | shares	39,348
Weighted Average Fair Value of incentive options, Outstanding, Beginning balance | $ / shares	$ 15.89
Weighted Average Fair Value of incentive options, Granted | $ / shares	26.54
Weighted Average Fair Value of incentive options, Converted | $ / shares	0
Weighted Average Fair Value of incentive options, Forfeited/cancelled | $ / shares	15.89
Weighted Average Fair Value of incentive options, Outstanding, Ending Balance | $ / shares	$ 21.62

Stock-Based Compensation - Su87

Stock-Based Compensation - Summary of Outstanding and Exercisable Stock Options (Detail) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Number of Shares Under Options, Outstanding at January 1, 2016	1,013,336
Number of Shares Under Options, Granted	0
Number of Shares Under Options, Exercised	0
Number of Shares Under Options, Forfeited	(7,500)
Number of Shares Under Options, Outstanding at December 31, 2016	1,005,836	1,013,336
Number of Shares Under Options, Exercisable at December 31, 2016	957,113
Number of Shares Under Options, Vested or expected to vest at December 31, 2016	1,005,836
Weighted Average Exercise Price, Outstanding at January 1, 2016	$ 24.03
Weighted Average Exercise Price, Granted	0		$ 20
Weighted Average Exercise Price, Exercised	0
Weighted Average Exercise Price, Forfeited	19.37
Weighted Average Exercise Price, Outstanding at December 31, 2016	24.07	$ 24.03
Weighted Average Exercise Price, Exercisable at December 31, 2016	24.28
Weighted Average Exercise Price, Vested or expected to vest at December 31, 2016	$ 24.07
Remaining Contractual Life In Years, Outstanding at December 31, 2016	4 years 2 months 12 days	5 years 2 months 12 days
Stock options life, years	4 years 2 months 12 days	5 years 2 months 12 days
Remaining Contractual Life In Years, Exercisable at December 31, 2016	4 years
Remaining Contractual Life In Years, Vested or expected to vest at December 31, 2016	4 years 2 months 12 days
Intrinsic Value, Outstanding at January 1, 2016	$ 0
Intrinsic Value, Outstanding at December 31, 2016	0	$ 0
Intrinsic Value, Exercisable at December 31, 2016	0
Intrinsic Value, Vested or expected to vest at December 31, 2016	$ 0

Accumulated Other Comprehensi88

Accumulated Other Comprehensive Loss - Net Change and Ending Balances for Various Components of Other Comprehensive Income (Loss) and Accumulated Other Comprehensive Loss (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	$ 211,423
Net Change	(3,400)	$ 11,154	$ (22,888)
Ending balance	149,834	211,423
Foreign Currency Translation Adjustments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(8,393)	(4,426)	277
Net Change	(14,580)	(3,967)	(4,703)
Ending balance	(22,973)	(8,393)	(4,426)
Unrecognized Components of Employee Benefit Plans [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(49,943)	(65,396)	(47,462)
Net Change	11,307	15,453	(17,934)
Ending balance	(38,636)	(49,943)	(65,396)
Unrealized Holding Gains on Securities [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	692	984	1,007
Net Change	(633)	(292)	(23)
Ending balance	59	692	984
Realized Gains/Losses from Settlement of Cash Flow Hedges [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	45	85	313
Net Change	506	(40)	(228)
Ending balance	551	45	85
AOCI Including Portion Attributable to Noncontrolling Interest [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(57,599)	(68,753)	(45,865)
Net Change	(3,400)	11,154	(22,888)
Ending balance	$ (60,999)	$ (57,599)	$ (68,753)

Accumulated Other Comprehensi89

Accumulated Other Comprehensive Loss - Line Items Affected on Consolidated Statements of Operations for Components Reclassified from Accumulated Other Comprehensive Loss (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net sales (foreign currency sales contracts)	$ 92,126	$ 82,861	$ 93,301	$ 63,578	$ 55,326	$ 58,094	$ 59,973	$ 65,087	$ 331,866	$ 238,480	$ 272,858
Depreciation and amortization (foreign currency purchase contracts)									(20,463)	(11,787)	(11,818)
Costs of products sold (excluding depreciation and amortization)									(276,496)	(196,091)	(218,597)
Selling and administrative									(58,175)	(39,510)	(37,380)
Other expense									(1,074)	(475)	(907)
Income tax provision									(22,712)	(2,633)	766
Net (loss) income attributable to Ampco-Pittsburgh	$ (43,062)	$ (27,382)	$ (6,486)	$ (2,890)	$ 3,332	$ (1,511)	$ (520)	$ 72	(79,820)	1,373	(1,187)
Reclassification Out of Accumulated Other Comprehensive Income (Loss) [Member] | Amortization of Unrecognized Employee Benefit Costs [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Costs of products sold (excluding depreciation and amortization)									2,463	3,604	3,601
Selling and administrative									(719)	3,354	1,524
Other expense									166	355	174
Total before income tax									1,910	7,313	5,299
Income tax provision									0	(2,573)	(1,841)
Net (loss) income attributable to Ampco-Pittsburgh									1,910	4,740	3,458
Reclassification Out of Accumulated Other Comprehensive Income (Loss) [Member] | Realized Gains from Sale of Marketable Securities [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Selling and administrative									(1,404)	(82)	(171)
Income tax provision									366	29	60
Net (loss) income attributable to Ampco-Pittsburgh									(1,038)	(53)	(111)
Reclassification Out of Accumulated Other Comprehensive Income (Loss) [Member] | Realized Gains/Losses from Settlement of Cash Flow Hedges [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net sales (foreign currency sales contracts)									(6)	(17)	33
Depreciation and amortization (foreign currency purchase contracts)									(27)	(27)	(27)
Costs of products sold (excluding depreciation and amortization)									220	751	146
Total before income tax									187	707	152
Income tax provision									(79)	(272)	(57)
Net (loss) income attributable to Ampco-Pittsburgh									$ 108	$ 435	$ 95

Accumulated Other Comprehensi90

Accumulated Other Comprehensive Loss - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2016USD ($)
Valuation Allowance Against Gross Deferred Income Tax Assets [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Income tax benefit for certain items	$ 0

Accumulated Other Comprehensi91

Accumulated Other Comprehensive Loss - Summary of Income Tax Expense (Benefit) Associated with Various Components of Other Comprehensive Income (Loss) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income tax expense (benefit) associated with changes in:
Unrecognized employee benefit costs	$ 0	$ (4,731)	$ 10,265
Unrealized holding losses/gains on marketable securities	0	134	(47)
Fair value of cash flow hedges	0	294	206
Income tax expense (benefit) associated with reclassification adjustments:
Amortization of unrecognized employee benefit costs	0	(2,573)	(1,841)
Realized gains from sale of marketable securities	366	29	60
Realized losses from settlement of cash flow hedges	$ (79)	$ (272)	$ (57)

Derivative Instruments - Additi

Derivative Instruments - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2016USD ($)Customer	Dec. 31, 2015USD ($)	Dec. 31, 2014USD ($)
Derivative [Line Items]
Anticipated foreign-denominated sales hedge	$ 18,727,000
Percentage of purchase commitments covering anticipated natural gas usage	24.00%
Purchase commitment amount of anticipated natural gas usage	$ 1,298,000
Number of subsidiaries purchased commitments for natural gas usage | Customer	1
Purchase commitments covering period anticipated usage, Description	For 2017 for one of its subsidiaries
Purchase of natural gas	$ 1,936,000	$ 2,452,000	$ 2,190,000
(Losses) gains on foreign exchange transactions included in other income (expense)	(1,161,000)	$ (324,000)	$ (488,000)
Foreign Currency Sales Contract - Fair Value Hedges [Member]
Derivative [Line Items]
Fair value of assets held as collateral related to forward exchange contracts	$ 600,000
Copper Purchases [Member]
Derivative [Line Items]
Percentage of anticipated purchases hedged	48.00%
Copper Purchases [Member] | Cash Flow Hedges [Member]
Derivative [Line Items]
Anticipated purchases, hedged	$ 2,200,000
Aluminum Purchases [Member]
Derivative [Line Items]
Percentage of anticipated purchases hedged	56.00%
Time period for hedged purchases	6 months
Aluminum Purchases [Member] | Cash Flow Hedges [Member]
Derivative [Line Items]
Anticipated purchases, hedged	$ 400,000

Derivative Instruments - Locati

Derivative Instruments - Location and Fair Value of Foreign Currency Sales Contracts Recorded on Consolidated Balance Sheets (Detail) - Foreign Currency Sales Contracts [Member] - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Receivables [Member]
Derivative [Line Items]
Fair value hedged item	$ 121	$ 27
Other Current Assets [Member]
Derivative [Line Items]
Cash flow hedge contracts	0	10
Fair value hedge contracts	214	113
Fair value hedged item	808	255
Other Noncurrent Assets [Member]
Derivative [Line Items]
Fair value hedge contracts	2	0
Fair value hedged item	45	39
Other Current Liabilities [Member]
Derivative [Line Items]
Fair value hedge contracts	940	258
Fair value hedged item	233	116
Other Noncurrent Liabilities [Member]
Derivative [Line Items]
Fair value hedge contracts	35	49
Fair value hedged item	$ 5	$ 0

Derivative Instruments - Summar

Derivative Instruments - Summary of Amount Recognized as and Reclassified from Accumulated Other Comprehensive Income (Loss) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Derivative [Line Items]
Comprehensive Income (Loss) Beginning of the Year	$ 45	$ 85	$ 313
Plus Recognized as Comprehensive Income (Loss)	398	(475)	(323)
Less Gain (Loss) Reclassified from Accumulated Other Comprehensive Loss	(108)	(435)	(95)
Comprehensive Income (Loss) End of the Year	551	45	85
Foreign Currency Sales Contracts [Member] | Cash Flow Hedges [Member]
Derivative [Line Items]
Comprehensive Income (Loss) Beginning of the Year	4	0	0
Plus Recognized as Comprehensive Income (Loss)	0	14	(21)
Less Gain (Loss) Reclassified from Accumulated Other Comprehensive Loss	4	10	(21)
Comprehensive Income (Loss) End of the Year	0	4	0
Foreign Currency Purchase Contracts [Member]
Derivative [Line Items]
Comprehensive Income (Loss) Beginning of the Year	241	258	275
Plus Recognized as Comprehensive Income (Loss)	0	0	0
Less Gain (Loss) Reclassified from Accumulated Other Comprehensive Loss	25	17	17
Comprehensive Income (Loss) End of the Year	216	241	258
Futures Contracts - Copper and Aluminum [Member]
Derivative [Line Items]
Comprehensive Income (Loss) Beginning of the Year	(200)	(173)	38
Plus Recognized as Comprehensive Income (Loss)	398	(489)	(302)
Less Gain (Loss) Reclassified from Accumulated Other Comprehensive Loss	(137)	(462)	(91)
Comprehensive Income (Loss) End of the Year	$ 335	$ (200)	$ (173)

Derivative Instruments - Summ95

Derivative Instruments - Summary of Change in Fair Value Reclassified or Expected to be Reclassified from Accumulated Other Comprehensive Loss to Earnings (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Derivative [Line Items]
Amount released to pre - tax earnings	$ (43,062)	$ (27,382)	$ (6,486)	$ (2,890)	$ 3,332	$ (1,511)	$ (520)	$ 72	$ (79,820)	$ 1,373	$ (1,187)
Foreign Currency Sales Contracts [Member] | Cash Flow Hedges [Member]
Derivative [Line Items]
Amount released to pre - tax earnings	0								0
Amount released to pre - tax earnings									6	17	(33)
Foreign Currency Purchase Contracts [Member]
Derivative [Line Items]
Amount released to pre - tax earnings	27								27
Amount released to pre - tax earnings									27	27	27
Futures Contracts - Copper and Aluminum [Member]
Derivative [Line Items]
Amount released to pre - tax earnings	$ 398								398
Amount released to pre - tax earnings									$ (220)	$ (751)	$ (146)

Fair Value - Fair Value of Fina

Fair Value - Fair Value of Financial Assets and Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Foreign Currency Exchange Contracts [Member] | Other Noncurrent Assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value	$ 47	$ 39
Foreign Currency Exchange Contracts [Member] | Other Current Assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value	1,022	378
Foreign Currency Exchange Contracts [Member] | Other Current Liabilities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Liabilities, fair value	1,173	374
Foreign Currency Exchange Contracts [Member] | Other Noncurrent Liabilities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Liabilities, fair value	40	49
Investments [Member] | Other Noncurrent Assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value	3,863	3,663
Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Foreign Currency Exchange Contracts [Member] | Other Noncurrent Assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value	0	0
Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Foreign Currency Exchange Contracts [Member] | Other Current Assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value	0	0
Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Foreign Currency Exchange Contracts [Member] | Other Current Liabilities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Liabilities, fair value	0	0
Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Foreign Currency Exchange Contracts [Member] | Other Noncurrent Liabilities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Liabilities, fair value	0	0
Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member] | Investments [Member] | Other Noncurrent Assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value	3,863	3,663
Significant Other Observable Inputs (Level 2) [Member] | Foreign Currency Exchange Contracts [Member] | Other Noncurrent Assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value	47	39
Significant Other Observable Inputs (Level 2) [Member] | Foreign Currency Exchange Contracts [Member] | Other Current Assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value	1,022	378
Significant Other Observable Inputs (Level 2) [Member] | Foreign Currency Exchange Contracts [Member] | Other Current Liabilities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Liabilities, fair value	1,173	374
Significant Other Observable Inputs (Level 2) [Member] | Foreign Currency Exchange Contracts [Member] | Other Noncurrent Liabilities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Liabilities, fair value	40	49
Significant Other Observable Inputs (Level 2) [Member] | Investments [Member] | Other Noncurrent Assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value	0	0
Significant Unobservable Inputs (Level 3) [Member] | Foreign Currency Exchange Contracts [Member] | Other Noncurrent Assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value	0	0
Significant Unobservable Inputs (Level 3) [Member] | Foreign Currency Exchange Contracts [Member] | Other Current Assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value	0	0
Significant Unobservable Inputs (Level 3) [Member] | Foreign Currency Exchange Contracts [Member] | Other Current Liabilities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Liabilities, fair value	0	0
Significant Unobservable Inputs (Level 3) [Member] | Foreign Currency Exchange Contracts [Member] | Other Noncurrent Liabilities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Liabilities, fair value	0	0
Significant Unobservable Inputs (Level 3) [Member] | Investments [Member] | Other Noncurrent Assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value	$ 0	$ 0

Income Taxes - (Loss) Income Be

Income Taxes - (Loss) Income Before Income Taxes and Equity Gains (Losses) in Chinese Joint Venture (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Domestic	$ (26,326)	$ 6,000	$ (1,182)
Foreign	(31,194)	(1,480)	290
(Loss) income before income taxes and equity gains (losses) in Chinese joint venture	$ (57,520)	$ 4,520	$ (892)

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2016USD ($)
Income Tax Contingency [Line Items]
Deferred tax liability recorded	$ 0
Unrecognized tax benefits	$ 49,000
Expiration period of unrecognized tax benefits due to lapse in statue of limitations	Within the next 12 months
Expiring in the Next Twelve Months [Member]
Income Tax Contingency [Line Items]
Unrecognized tax benefits	$ 134,000
State [Member]
Income Tax Contingency [Line Items]
Net operating loss carryforwards	$ 26,757,000
Operating loss carry forwards expiration period	2,036
Foreign Tax Authority [Member]
Income Tax Contingency [Line Items]
Net operating loss carryforwards	$ 78,548,000
Capital loss carryforwards	$ 745,000
Capital loss carry forwards expiration period	Capital loss carryforwards of $745 which do not expire
Operating loss carry forwards expiration period	2,026
Domestic Tax Authority [Member]
Income Tax Contingency [Line Items]
Net operating loss carryforwards	$ 1,865,000
Operating loss carry forwards expiration period	2,036

Income Taxes - Income Tax Provi

Income Taxes - Income Tax Provision (Benefit) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Current:
Federal	$ (1,574)	$ 4,577	$ 3,458
State	465	378	210
Foreign	414	(20)	122
Total current income tax expense	(695)	4,935	3,790
Deferred:
Federal	(2,688)	(2,203)	(4,678)
State	(1,838)	197	54
Foreign	(2,472)	(296)	101
Increase (reversal) of valuation allowance	30,405	0	(33)
Deferred income tax expense benefit	23,407	(2,302)	(4,556)
Total provision (benefit) for taxes on income	$ 22,712	$ 2,633	$ (766)

Income Taxes - Difference Betwe

Income Taxes - Difference Between Statutory U.S. Federal Income Tax and the Corporation's Effective Income Tax (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Computed at statutory rate	$ (19,984,000)	$ 1,402,000	$ (683,000)
Tax differential on non-U.S. earnings	1,790,000	106,000	128,000
State income taxes	(1,535,000)	226,000	(227,000)
Manufacturers deduction (I.R.C. Section 199)	204,000	(433,000)	(359,000)
Meals and entertainment	143,000	136,000	224,000
Tax credits	0	(243,000)	(12,000)
Goodwill impairment	9,191	0	0
Increase (reversal) of valuation allowance	30,405,000	0	(33,000)
Change in tax rates	1,913,000	224,000	301,000
Change in uncertain tax positions	114,000	91,000	(80,000)
Acquisition-related costs	571,000	981,000	0
Other - net	(100,000)	143,000	(25,000)
Total provision (benefit) for taxes on income	$ 22,712,000	$ 2,633,000	$ (766,000)

Income Taxes - Deferred Income

Income Taxes - Deferred Income Tax Assets and Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Assets:
Employment - related liabilities	$ 18,659	$ 9,644
Liabilities related to discontinued operations	241	704
Capital loss carryforwards	282	223
Asbestos-related liability	21,024	16,356
Net operating loss - domestic	653	0
Net operating loss - state	2,123	1,445
Net operating loss - foreign	19,106	0
Inventory related	2,157	4,292
Impairment charge associated with investment in UES-MG	2,184	2,298
Investment tax credits - foreign	791	0
Other	6,660	3,311
Gross deferred income tax assets	92,254	54,029
Valuation allowance	(45,449)	(2,481)
Deferred tax assets, net, Total	46,805	51,548
Liabilities:
Depreciation	(37,584)	(29,223)
Mark-to-market adjustment - derivatives	(187)	(40)
Intangible assets - definite life	(2,067)	0
Intangible assets - indefinite life	(731)	0
Other	(2,003)	(1,716)
Gross deferred income tax liabilities	(42,572)	(30,979)
Net deferred income tax assets	4,233	20,569
Foreign Tax Authority [Member]
Assets:
Pension liability	2,241	2,822
Domestic Tax Authority [Member]
Assets:
Pension liability	$ 16,133	$ 12,934

Income Taxes - Summary of Chang

Income Taxes - Summary of Changes in Unrecognized Tax Benefits (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Balance at the beginning of the year	$ 315	$ 52	$ 270
Gross increases for tax positions taken in the current year	0	0	0
Gross increases for tax positions taken in prior years	0	283	2
Gross decreases in tax positions due to lapse in statute of limitations	(79)	(20)	(61)
Gross decreases for tax positions taken in prior years	0	0	(17)
Gross decreases for tax settlements with taxing authorities	0	0	(142)
Balance at the end of the year	$ 236	$ 315	$ 52

Operating Leases - Additional I

Operating Leases - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Leases [Abstract]
Operating lease expense	$ 1,148	$ 1,043	$ 995
Operating lease payments, in 2017	719
Operating lease payments, in 2018	578
Operating lease payments, in 2019	522
Operating lease payments, in 2020	414
Operating lease payments, in 2021	395
Operating lease payments, thereafter	$ 804

Research and Development Costs

Research and Development Costs - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Research and Development [Abstract]
Expenses relating to product development	$ 2,716	$ 1,137	$ 1,328

Related Parties - Additional In

Related Parties - Additional Information (Detail) ¥ in Thousands	12 Months Ended
	Dec. 31, 2016USD ($)	Dec. 31, 2016CNY (¥)	Dec. 31, 2015USD ($)	Dec. 31, 2014USD ($)	Dec. 31, 2016CNY (¥)
Related Party Transaction [Line Items]
Accrued interest	$ 2,274,000		$ 3,000
ATR [Member]
Related Party Transaction [Line Items]
Purchases	140,000	¥ 931
LB Co paid Corporation for administrative services	206,000	¥ 1,429
Loan outstanding	$ 4,990,000				¥ 34,655
Debt, interest rate	4.90%				4.90%
Accrued interest	$ 2,265,000				¥ 15,730
Debt, maturity date	2,008	2,008
Debt, renewal period	1 year	1 year
ATR [Member] | Minimum [Member]
Related Party Transaction [Line Items]
Interest accrual period	3 years	3 years
ATR [Member] | Maximum [Member]
Related Party Transaction [Line Items]
Interest accrual period	5 years	5 years
LB Co [Member]
Related Party Transaction [Line Items]
Purchases	$ 955,000		1,270,000	$ 1,358,000
LB Co paid Corporation for administrative services			72,000	$ 100,000
Net amount payable	$ 0		$ 93,000

Litigation - Schedule of Loss C

Litigation - Schedule of Loss Contingencies by Contingency (Detail) - Asbestos Claims [Member]	12 Months Ended
	Dec. 31, 2016USD ($)Claim	Dec. 31, 2015USD ($)Claim
Loss Contingencies [Line Items]
Total claims pending at the beginning of the period	6,212	8,457
New claims served	1,452	1,424
Claims dismissed	(782)	(3,339)
Claims settled	(264)	(330)
Total claims pending at the end of the period	6,618	6,212
Gross settlement and defense costs | $	$ 17,960,000	$ 19,199,000
Average gross settlement and defense costs per claim resolved | $	$ 17,170	$ 5,230

Litigation - Schedule of Los107

Litigation - Schedule of Loss Contingencies by Contingency (Parenthetical) (Detail) - Claim	Dec. 31, 2016	Dec. 31, 2015
Commitments and Contingencies Disclosure [Abstract]
Number of claims inactive or transferred to MDL panel	444	430

Litigation - Additional Informa

Litigation - Additional Information (Detail) $ in Thousands	Feb. 24, 2011DefendantCompany	Dec. 31, 2016USD ($)
Commitments and Contingencies Disclosure [Abstract]
Number of domestic insurance companies, lawsuit filed against | Company	13
Number of defendant insurers in the coverage action | Defendant	2
Number of domestic defendant insurers in action | Defendant	8
Number of domestic insurance companies, remain in litigation | Company	2
Reserves for total costs for asbestos liability claims pending or projected | $		$ 171,181
Percentage attributable to settlement costs for unasserted claims projected to be filed		70.00%
Insurance recoveries receivable | $		$ 115,945

Litigation - Summary of Activit

Litigation - Summary of Activity in Asbestos Insurance Recoveries (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Loss Contingencies [Line Items]
Insurance receivable - asbestos, end of the year	$ 115,945
Asbestos Claims [Member]
Loss Contingencies [Line Items]
Insurance receivable - asbestos, beginning of the year	125,423	$ 140,651
Settlement and defense costs paid by insurance carriers	(23,138)	(15,228)
Changes in estimated coverage	13,660	0
Insurance receivable - asbestos, end of the year	$ 115,945	$ 125,423

Litigation - Summary of Acti110

Litigation - Summary of Activity in Asbestos Insurance Recoveries (Parenthetical) (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2016USD ($)
Asbestos Claims [Member]
Loss Contingencies [Line Items]
Cash settlement with an insurance carrier	$ 9,808

Environmental Matters - Additio

Environmental Matters - Additional Information (Detail) $ in Thousands	Dec. 31, 2016USD ($)
Environmental Remediation Obligations [Abstract]
Potential liability for all environmental compliance	$ 2,457

Business Segments - Additional

Business Segments - Additional Information (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2016USD ($)Segment	Dec. 31, 2015USD ($)
Segment Reporting Information [Line Items]
Number of reportable business segments | Segment	2
Corporate Costs, Including Other Income (Expense) [Member]
Segment Reporting Information [Line Items]
Internal reorganization associated costs | $	$ 2,400	$ 1,600

Business Segments - Business Se

Business Segments - Business Segment Net Sales and (Loss) Income before Income Taxes (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Revenue from External Customer [Line Items]
Net sales	$ 92,126	$ 82,861	$ 93,301	$ 63,578	$ 55,326	$ 58,094	$ 59,973	$ 65,087	$ 331,866	$ 238,480	$ 272,858
(Loss) Income Before Income Taxes and Equity Losses in Chinese Joint Venture									(57,520)	4,520	(892)
Capital Expenditures									10,566	9,407	13,309
Depreciation and Amortization Expense									20,463	11,787	11,818
Identifiable Assets	565,889				506,156				565,889	506,156	536,409
Long-Lived Assets	339,601				265,905				339,601	265,905	284,098
Heat Exchange Coils [Member]
Revenue from External Customer [Line Items]
Net sales									28,139	32,745	39,109
Centrifugal Pumps [Member]
Revenue from External Customer [Line Items]
Net sales									36,359	33,120	32,983
Air Handling Systems [Member]
Revenue from External Customer [Line Items]
Net sales									19,716	20,348	21,378
Operating Segments [Member]
Revenue from External Customer [Line Items]
Net sales									331,866	238,480	272,858
(Loss) Income Before Income Taxes and Equity Losses in Chinese Joint Venture									(37,755)	19,722	8,602
Corporate Costs, Including Other Income (Expense) [Member]
Revenue from External Customer [Line Items]
(Loss) Income Before Income Taxes and Equity Losses in Chinese Joint Venture									(19,765)	(15,202)	(9,494)
Capital Expenditures									741	305	69
Depreciation and Amortization Expense									114	57	71
Identifiable Assets	44,541				94,414				44,541	94,414	78,507
U.S. [Member]
Revenue from External Customer [Line Items]
Net sales									159,531	126,417	143,493
(Loss) Income Before Income Taxes and Equity Losses in Chinese Joint Venture									(25,906)	5,855	(1,471)
Long-Lived Assets	206,460				236,707				206,460	236,707	252,739
Foreign [Member]
Revenue from External Customer [Line Items]
Net sales									172,335	112,063	129,365
(Loss) Income Before Income Taxes and Equity Losses in Chinese Joint Venture									(31,614)	(1,335)	579
Long-Lived Assets	133,141				29,198				133,141	29,198	31,359
Forged and Cast Engineered Products [Member]
Revenue from External Customer [Line Items]
Net sales									247,652	152,267	179,388
Write off of goodwill associated with the Akers acquisition									26,676
Forged and Cast Engineered Products [Member] | Operating Segments [Member]
Revenue from External Customer [Line Items]
Net sales									247,652	152,267	179,388
(Loss) Income Before Income Taxes and Equity Losses in Chinese Joint Venture									(42,878)	(3,444)	4,380
Capital Expenditures									9,440	8,608	12,884
Depreciation and Amortization Expense									19,166	10,468	10,303
Identifiable Assets	348,331				228,718				348,331	228,718	260,384
Air and Liquid Processing [Member] | Operating Segments [Member]
Revenue from External Customer [Line Items]
Net sales									84,214	86,213	93,470
(Loss) Income Before Income Taxes and Equity Losses in Chinese Joint Venture									5,123	23,166	4,222
Capital Expenditures									385	494	356
Depreciation and Amortization Expense									1,183	1,262	1,444
Identifiable Assets	$ 173,017				$ 183,024				$ 173,017	$ 183,024	$ 197,518

Business Segments - Business114

Business Segments - Business Segment Net Sales and (Loss) Income before Income Taxes (Parenthetical) (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2016USD ($)CustomerCustomers	Dec. 31, 2015USD ($)Customer	Dec. 31, 2014USD ($)Customer
Revenue from External Customer [Line Items]
Investments in joint ventures	$ 2,019	$ 3,097	$ 3,914
Change in the identifiable assets of the Air and Liquid / Long-lived assets	$ 102,945	108,423	123,651
Number of customers accounted for net sales | Customers	1
Forged and Cast Engineered Products [Member]
Revenue from External Customer [Line Items]
Investments in joint ventures	$ 2,019	$ 3,097	$ 3,914
Number of customers accounted for net sales | Customer	2	2	2
Air and Liquid Processing [Member]
Revenue from External Customer [Line Items]
Estimated costs of asbestos-related litigation, net of estimated insurance recoveries	$ 4,565	$ 14,333	$ 4,487
Number of customers accounted for net sales | Customer	1	0	0
Air and Liquid Processing [Member] | U.S. [Member]
Revenue from External Customer [Line Items]
Change in the identifiable assets of the Air and Liquid / Long-lived assets	$ 115,945	$ 125,423	$ 140,651
Sales Revenue, Net [Member] | Individual Countries [Member] | Maximum [Member]
Revenue from External Customer [Line Items]
Net sales	10.00%	10.00%	10.00%
Sales Revenue, Net [Member] | Customer Concentration Risk [Member]
Revenue from External Customer [Line Items]
Net sales	11.00%
Sales Revenue, Net [Member] | Customer Concentration Risk [Member] | Air and Liquid Processing [Member]
Revenue from External Customer [Line Items]
Net sales	10.00%	10.00%	10.00%
Sales Revenue, Net [Member] | Customer Concentration Risk [Member] | Customer Two [Member] | Forged and Cast Engineered Products [Member]
Revenue from External Customer [Line Items]
Net sales	24.00%	33.00%	29.00%

Subsequent Event - Additional I

Subsequent Event - Additional Information (Detail)	Mar. 02, 2017USD ($)	Dec. 31, 2016USD ($)	Dec. 31, 2015USD ($)	Dec. 31, 2014USD ($)	Dec. 31, 2016GBP (£)	Dec. 31, 2016EUR (€)
Subsequent Event [Line Items]
Initial borrowing capacity		$ 750,000			£ 250,000	€ 400,000
Repayment of outstanding balance of credit facility and term loan		11,217,000	$ 0	$ 0
Credit Facilities [Member]
Subsequent Event [Line Items]
Initial borrowing capacity		$ 20,000,000
Subsequent Event [Member] | Credit Facilities [Member]
Subsequent Event [Line Items]
Repayment of outstanding balance of credit facility and term loan	$ 7,596,000
Subsequent Event [Member] | Europe [Member] | Maximum [Member]
Subsequent Event [Line Items]
Initial borrowing capacity	25,000,000
Subsequent Event [Member] | Europe [Member] | Minimum [Member]
Subsequent Event [Line Items]
Initial borrowing capacity	15,000,000
Subsequent Event [Member] | CANADA
Subsequent Event [Line Items]
Initial borrowing capacity	$ 15,000,000

Quarterly Information - Quarter

Quarterly Information - Quarterly Information - Unaudited (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Quarterly Financial Information Disclosure [Abstract]
Net sales	$ 92,126	$ 82,861	$ 93,301	$ 63,578	$ 55,326	$ 58,094	$ 59,973	$ 65,087	$ 331,866	$ 238,480	$ 272,858
Gross profit	11,454	15,594	15,849	12,473	8,131	9,439	11,776	13,043
Net (loss) income attributable to Ampco-Pittsburgh	$ (43,062)	$ (27,382)	$ (6,486)	$ (2,890)	$ 3,332	$ (1,511)	$ (520)	$ 72	$ (79,820)	$ 1,373	$ (1,187)
Net (loss) income per common share attributable to Ampco-Pittsburgh:
Basic	$ (3.51)	$ (2.23)	$ (0.53)	$ (0.26)	$ 0.32	$ (0.14)	$ (0.05)	$ 0.01	$ (6.68)	$ 0.13	$ (0.11)
Diluted	$ (3.51)	$ (2.23)	$ (0.53)	$ (0.26)	$ 0.32	$ (0.14)	$ (0.05)	$ 0.01	$ (6.68)	$ 0.13	$ (0.11)
Comprehensive (loss) income attributable to Ampco-Pittsburgh	$ (47,972)	$ (22,894)	$ (10,739)	$ (1,501)	$ 8,296	$ (2,250)	$ 2,789	$ 3,692	$ (83,106)	$ 12,527	$ (24,075)

Quarterly Information - Quar117

Quarterly Information - Quarterly Information - Unaudited (Parenthetical) (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended					12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Dec. 31, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Quarterly Financial Information Disclosure [Abstract]
After-tax charge	$ 4,565					$ 26,676
After-tax charge per common share to recognize	$ 0.38					$ 2.23
Unrecognized employee benefit costs		$ 4,762		$ 5,231	$ 4,163	$ 9,397	$ 10,713	$ (21,392)
After-tax credit				$ 9,316
After-tax credit per common share for the estimated additional insurance recoveries				$ 0.89
Valuation allowance	$ 2,083	$ 26,903	$ 1,419

Schedule II - Valuation and Qua

Schedule II - Valuation and Qualifying Accounts (Detail) - USD ($) $ in Thousands	3 Months Ended			12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Valuation and Qualifying Accounts Disclosure [Line Items]
Other	$ 2,083	$ 26,903	$ 1,419
Allowance for Doubtful Accounts [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period				$ 983	$ 1,374	$ 551
Charged to Costs and Expenses				1,598	408	1,381
Charged to Other Accounts				0	(762)	0
Deductions				(353)	(25)	(531)
Other				0	(12)	(27)
Balance at End of Period	2,228			2,228	983	1,374
Valuation Allowance Against Gross Deferred Income Tax Assets [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period				2,481	3,254	2,639
Charged to Costs and Expenses				0	0	0
Charged to Other Accounts				30,405	(715)	721
Deductions				0	0	(33)
Other				12,563	(58)	(73)
Balance at End of Period	$ 45,449			$ 45,449	$ 2,481	$ 3,254