Condensed Consolidated Statements of Comprehensive (Loss) Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Statement of Comprehensive Income [Abstract]
Net income	$ 2,552	$ 996	$ 346	$ 1,981
Adjustments for changes in:
Foreign currency translation	(277)	(875)	(2,722)	1,037
Unrecognized employee benefit costs (including effects of foreign currency translation)	(24)	13	69	(136)
Fair value of cash flow hedges	158	(278)	210	(100)
Reclassification adjustments for items included in net income:
Amortization of unrecognized employee benefit costs	(174)	(298)	(357)	(493)
Settlements of cash flow hedges	(278)	(73)	(267)	(187)
Other comprehensive (loss) income	(595)	(1,511)	(3,067)	121
Comprehensive income (loss)	1,957	(515)	(2,721)	2,102
Less: Comprehensive income attributable to noncontrolling interest	471	56	778	404
Comprehensive income (loss) attributable to Ampco-Pittsburgh	$ 1,486	$ (571)	$ (3,499)	$ 1,698