Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Net sales:
Net sales	$ 107,053	$ 106,908	$ 213,030	$ 209,291
Total net sales	110,988	107,211	221,203	212,014
Operating costs and expenses:
Costs of products sold (excluding depreciation and amortization)	87,684	85,471	180,174	171,843
Selling and administrative	13,550	14,093	26,523	26,280
Depreciation and amortization	4,698	4,354	9,368	8,728
Loss (gain) on disposal of assets	13	5	13	(118)
Total operating costs and expenses	105,945	103,923	216,078	206,733
Income from operations	5,043	3,288	5,125	5,281
Other expense - net:
Investment-related income	8	7	27	16
Interest expense	(3,017)	(2,245)	(5,774)	(4,316)
Other income - net	1,381	98	2,285	1,465
Total other expense - net	(1,628)	(2,140)	(3,462)	(2,835)
Income before income taxes	3,415	1,148	1,663	2,446
Income tax provision	(863)	(152)	(1,317)	(465)
Net income	2,552	996	346	1,981
Less: Net income attributable to noncontrolling interest	540	573	1,051	882
Net income (loss) attributable to Ampco-Pittsburgh	$ 2,012	$ 423	$ (705)	$ 1,099
Net income (loss) per share attributable to Ampco-Pittsburgh common shareholders:
Basic	$ 0.1	$ 0.02	$ (0.04)	$ 0.06
Diluted	$ 0.1	$ 0.02	$ (0.04)	$ 0.06
Weighted-average number of common shares outstanding:
Basic	19,859	19,541	19,794	19,504
Diluted	19,875	19,590	19,794	19,587
Related Party [Member]
Net sales:
Net sales to related parties	$ 3,935	$ 303	$ 8,173	$ 2,723