Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Net sales:
Net sales	$ 402,799	$ 415,319
Total net sales	418,305	422,340
Operating costs and expenses:
Costs of products sold (excluding depreciation and amortization)	336,809	347,781
Selling and administrative	54,878	50,884
Depreciation and amortization	18,611	17,674
(Credit) charge for asbestos-related costs, net	(4,184)	40,696
Loss (gain) on disposal of assets	22	(121)
Total operating costs and expenses	406,136	456,914
Income (loss) from operations	12,169	(34,574)
Other expense:
Investment-related income	121	128
Interest expense	(11,620)	(9,347)
Other – net	4,376	4,516
Total other (expense) income	(7,123)	(4,703)
Income (loss) before income taxes	5,046	(39,277)
Income tax (provision) benefit	(2,695)	1,158
Net income (loss)	2,351	(38,119)
Less: Net income attributable to noncontrolling interest	1,913	1,809
Net income (loss) attributable to Ampco-Pittsburgh	$ 438	$ (39,928)
Net income (loss) per share attributable to Ampco-Pittsburgh common shareholders:
Basic	$ 0.02	$ (2.04)
Diluted	$ 0.02	$ (2.04)
Weighted-average number of common shares outstanding:
Basic	19,887	19,617
Diluted	19,887	19,617
Related Party [Member]
Net sales:
Net sales to related parties	$ 15,506	$ 7,021