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Accumulated Other Comprehensive Loss (Tables)

9 Months Ended

Sep. 30, 2025

Equity [Abstract]

Net Change and Ending Balances for Various Components of Accumulated Other Comprehensive Loss

Net change and ending balances for the various components of accumulated other comprehensive loss as of and for the nine months ended September 30, 2025 and 2024 are summarized below. All amounts are net of tax where applicable.

		Foreign Currency Translation				Unrecognized Employee Benefit Costs				Cash Flow Hedges				Total Accumulated Other Comprehensive Loss				Less: Noncontrolling Interest				Accumulated Other Comprehensive Loss Attributable to Ampco-Pittsburgh
Balance at January 1, 2025		$	(27,691	)		$	(39,856	)		$	(102	)		$	(67,649	)		$	(813	)		$	(66,836	)
Net change			10,232				(1,343	)			236				9,125				333				8,792
Balance at September 30, 2025		$	(17,459	)		$	(41,199	)		$	134			$	(58,524	)		$	(480	)		$	(58,044	)
Balance at January 1, 2024		$	(23,161	)		$	(40,490	)		$	186			$	(63,465	)		$	(476	)		$	(62,989	)
Net change			3,130				(1,002	)			104				2,232				146				2,086
Balance at September 30, 2024		$	(20,031	)		$	(41,492	)		$	290			$	(61,233	)		$	(330	)		$	(60,903	)

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 condensed consolidated statements of operations for components reclassified from accumulated other comprehensive loss. Amounts in parentheses represent credits to net loss.

	Three Months Ended September 30,								Nine Months Ended September 30,
	2025				2024				2025				2024
Amortization of unrecognized employee benefit costs:
Other loss – net	$	(157	)		$	(177	)		$	(480	)		$	(534	)
Income tax effect		—				—				—				—
Net of tax	$	(157	)		$	(177	)		$	(480	)		$	(534	)
Settlements of cash flow hedges:
Depreciation and amortization (foreign currency purchase contracts)	$	(6	)		$	(6	)		$	(20	)		$	(20	)
Costs of products sold (excluding depreciation and amortization) (futures contracts – copper and aluminum)		(242	)			(7	)			(578	)			(267	)
Total before income tax		(248	)			(13	)			(598	)			(287	)
Income tax effect		4				—				14				7
Net of tax	$	(244	)		$	(13	)		$	(584	)		$	(280	)

Summary of Income Tax Effect Associated With Various Components of Other Comprehensive (Loss) Income

The income tax effect associated with the various components of other comprehensive (loss) income for the three and nine months ended September 30, 2025 and 2024 is summarized below. Amounts in parentheses represent credits to net loss when reclassified to earnings. Certain amounts have no tax effect due to the Corporation having a valuation allowance recorded against the deferred income tax assets for the jurisdiction where the income or expense is recognized. 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.

		Three Months Ended September 30,								Nine Months Ended September 30,
		2025				2024				2025				2024
Income tax effect associated with changes in:
Unrecognized employee benefit costs		$	—			$	—			$	—			$	—
Fair value of cash flow hedges		$	(3	)		$	(5	)		$	23			$	(10	)
Income tax effect associated with reclassification adjustments:
Amortization of unrecognized employee benefit costs		$	—			$	—			$	—			$	—
Settlement of cash flow hedges		$	4			$	—			$	14			$	7

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Tabular disclosure of information about items reclassified out of accumulated other comprehensive income (loss).

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- Definition

Tabular disclosure of the net gain (loss) and net prior service cost or credit recognized in other comprehensive income (loss) for the period for pension plans and/or other employee benefit plans, and reclassification adjustments of other comprehensive income (loss) for the period, as those amounts, including amortization of the net transition asset or obligation, are recognized as components of net periodic benefit cost.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480506/715-20-50-1

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (h)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480506/715-20-50-5

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Tabular disclosure of components of comprehensive income (loss). Includes, but is not limited to, foreign currency translation adjustments, foreign currency transactions designated as economic hedges of a net investment in foreign entity, gain (loss) and prior service cost (credit) for pension plans and other postretirement benefit plans.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Paragraph 1
-Section 45
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482790/220-10-45-1

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