Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Net sales:
Net sales	$ 92,072	$ 102,200	$ 305,102	$ 311,491
Total net sales	96,166	102,218	317,369	314,232
Operating costs and expenses:
Costs of products sold (excluding depreciation and amortization)	76,389	84,490	256,563	256,333
Selling and administrative	13,332	11,821	39,855	38,101
Depreciation and amortization	4,586	4,382	13,954	13,110
Credit for asbestos litigation		(191)		(191)
(Gain) loss on disposal of assets	(11)	(6)	2	(124)
Total operating costs and expenses	94,296	100,496	310,374	307,229
Income from operations	1,870	1,722	6,995	7,003
Other expense - net:
Investment-related income	77	98	104	114
Interest expense	(2,976)	(2,468)	(8,750)	(6,784)
Other income - net	211	1,959	2,496	3,424
Total other expense - net	(2,688)	(411)	(6,150)	(3,246)
(Loss) income before income taxes	(818)	1,311	845	3,757
Income tax provision	(636)	(76)	(1,953)	(541)
Net (loss) income	(1,454)	1,235	(1,108)	3,216
Less: Net income attributable to noncontrolling interest	505	426	1,556	1,308
Net (loss) income attributable to Ampco-Pittsburgh	$ (1,959)	$ 809	$ (2,664)	$ 1,908
Net income (loss) per share attributable to Ampco-Pittsburgh common shareholders:
Basic	$ (0.1)	$ 0.04	$ (0.13)	$ 0.1
Diluted	$ (0.1)	$ 0.04	$ (0.13)	$ 0.1
Weighted-average number of common shares outstanding:
Basic	19,980	19,729	19,857	19,580
Diluted	19,980	19,729	19,857	19,633
Related Party [Member]
Net sales:
Net sales to related parties	$ 4,094	$ 18	$ 12,267	$ 2,741