Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Net sales:
Net sales	$ 108,933	$ 107,053	$ 208,159	$ 213,030
Total net sales	113,104	110,988	217,369	221,203
Operating costs and expenses:
Costs of products sold (excluding depreciation and amortization)	91,981	87,684	174,085	180,174
Selling and administrative	12,968	13,550	26,627	26,523
Depreciation and amortization	5,368	4,698	10,004	9,368
Severance charge (Note 2)	5,854		5,854
Loss on disposal of assets	11	13	27	13
Total operating costs and expenses	116,182	105,945	216,597	216,078
(Loss) income from operations	(3,078)	5,043	772	5,125
Other expense - net:
Interest expense	(2,825)	(3,017)	(5,551)	(5,774)
Other (expense) income - net	(225)	1,389	601	2,312
Total other expense - net	(3,050)	(1,628)	(4,950)	(3,462)
(Loss) income before income taxes	(6,128)	3,415	(4,178)	1,663
Income tax provision	(592)	(863)	(651)	(1,317)
Net (loss) income	(6,720)	2,552	(4,829)	346
Less: Net income attributable to noncontrolling interest	615	540	1,364	1,051
Net (loss) income attributable to Ampco-Pittsburgh	$ (7,335)	$ 2,012	$ (6,193)	$ (705)
Net (loss) income per share attributable to Ampco- Pittsburgh common shareholders:
Basic	$ (0.36)	$ 0.1	$ (0.31)	$ (0.04)
Diluted	$ (0.36)	$ 0.1	$ (0.31)	$ (0.04)
Weighted-average number of common shares outstanding:
Basic	20,108	19,859	20,044	19,794
Diluted	20,108	19,875	20,044	19,794
Related Party [Member]
Net sales:
Net sales to related parties	$ 4,171	$ 3,935	$ 9,210	$ 8,173