CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2023		Dec. 31, 2022		Dec. 31, 2021
CONSOLIDATED STATEMENTS OF OPERATIONS [Abstract]
Net sales	[1]	$ 1,358,272		$ 1,371,815		$ 1,298,816
Cost of sales		969,446		989,276		921,885
Gross profit		388,826		382,539		376,931
Selling, general and administrative expenses		293,583		276,626		247,547
Restructuring and integration expenses		2,642	[2],[3]	1,891	[2]	392
Other income, net		76		113		7
Operating income		92,677		104,135		128,999
Other non-operating income, net		2,326		4,814		3,494
Interest expense		13,287		10,617		2,028
Earnings from continuing operations before taxes		81,716		98,332		130,465
Provision for income taxes		18,368		25,206		31,044
Earnings from continuing operations		63,348		73,126		99,421
Loss from discontinued operations, net of income tax benefit of $10,188, $6,216 and $2,975		(28,996)		(17,691)		(8,467)
Net earnings		34,352		55,435		90,954
Net earnings attributable to noncontrolling interest		204		84		68
Net earnings attributable to SMP	[4]	34,148		55,351		90,886
Net earnings attributable to SMP
Earnings from continuing operations		63,144		73,042		99,353
Discontinued operations		(28,996)		(17,691)		(8,467)
Net earnings attributable to SMP	[4]	$ 34,148		$ 55,351		$ 90,886
Net earnings per common share - Basic:
Earnings from continuing operations (in dollars per share)		$ 2.91		$ 3.37		$ 4.49
Discontinued operations (in dollars per share)		(1.34)		(0.82)		(0.39)
Net earnings per common share - Basic (in dollars per share)		1.57		2.55		4.1
Net earnings per common share - Diluted:
Earnings from continuing operations (in dollars per share)		2.85		3.3		4.39
Discontinued operations (in dollars per share)		(1.31)		(0.8)		(0.37)
Net earnings per common share - Diluted (in dollars per share)		1.54		2.5		4.02
Dividend declared per share (in dollars per share)		$ 1.16		$ 1.08		$ 1
Average number of common shares (in shares)		21,716,177		21,683,719		22,147,479
Average number of common shares and dilutive common shares (in shares)		22,161,341		22,139,981		22,616,456

[1] There are no intersegment sales among our Vehicle Control, Temperature Control and Engineered Solutions operating segments.

[2] Included in restructuring and integration costs in 2023 and 2022 is a $0.1 million and $0.2 million increase, respectively, in environmental cleanup costs related to ongoing monitoring and remediation in connection with the prior closure of our manufacturing operations at our Long Island City, New York location.  The environmental liability has been reclassed to accrued liabilities as of December 31, 2023 and 2022, respectively.

[3] Restructuring and integration expenses incurred during the year ended December 31, 2023 consist of $1.3 million in our Vehicle Control segment, $1.1 million in our Temperature Control segment and $0.2 million in our Engineered Solutions segment.

[4] Throughout this Form 10-K, “SMP” refers to Standard Motor Products, Inc. and subsidiaries.