Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	[1]
Revenues [Abstract]
Net sales		$ 380,255	$ 335,078
Net sales to related parties		9,934	9,842
Total net sales		390,189	344,920
Operating costs and expenses:
Costs of products sold (excluding depreciation and amortization)		327,996	278,805
Selling and administrative		43,527	45,998
Depreciation and amortization		17,408	17,877	[2]
(Credit) charge for asbestos-related costs		(2,226)	6,661
Loss on disposal of assets		706	361
Total operating costs and expenses		387,411	349,702
Income (loss) from operations		2,778	(4,782)
Other income (expense):
Investment-related income		519	1,084
Interest expense		(5,434)	(3,599)
Other – net		7,693	6,302
Total other income (expense)		2,778	3,787
Income (loss) before income taxes		5,556	(995)
Income tax provision		(1,576)	(2,305)
Net income (loss)	[3]	3,980	(3,300)	[2],[4]
Less: Net income attributable to noncontrolling interest		564	561
Net income attributable to Ampco-Pittsburgh		$ 3,416	$ (3,861)
Net income (loss) per share attributable to Ampco-Pittsburgh common shareholders:
Basic		$ 0.18	$ (0.20)
Diluted		$ 0.18	$ (0.20)
Weighted-average number of common shares outstanding:
Basic		19,319	18,953
Diluted		19,444	18,953

[1] Costs of products sold (excluding depreciation and amortization) and subsequent subtotals and totals along with net loss per share for 2021 were adjusted to include inventory costs using the FIFO basis of costing. See Note 2.

[2] Net loss and the change in inventories for 2021 were adjusted to include inventory costs using the FIFO basis of costing. See Note 2.   See Notes to Consolidated Financial Statements.

[3] Retained deficit as of January 1, 2021, net loss for 2021 and retained deficit as of December 31, 2021 were adjusted to include inventory costs using the FIFO basis of costing. See Note 2.   See Notes to Consolidated Financial Statements.

[4] Net loss for 2021 and subsequent subtotals and totals were adjusted to include inventory costs using the FIFO basis of costing. See Note 2