Basis of Presentation	12 Months Ended
Dec. 31, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Basis of PresentationCore Molding Technologies and its subsidiaries operate in the engineered materials market as one operating segment as a molder of thermoplastic and thermoset structural products. During the year ended December 31, 2021 the Company's operating segment consisted of one component reporting unit, which changed from two component reporting units in prior periods. The Company produces and sells molded products for varied markets, including medium and heavy-duty trucks, automobiles, power sports, construction and agriculture, building products and other industrial markets. The Company offers customers a wide range of manufacturing processes to fit various program volume and investment requirements. These processes include compression molding of sheet molding compound ("SMC"), resin transfer molding ("RTM"), liquid molding of dicyclopentadiene ("DCPD"), spray-up and hand-lay-up, direct long-fiber thermoplastics ("D-LFT") and structural foam and structural web injection molding ("SIM"). Core Molding Technologies has its headquarters in Columbus, Ohio, and operates seven production facilities in Columbus and Batavia, Ohio; Gaffney, South Carolina; Winona, Minnesota; Matamoros and Escobedo, Mexico; and Cobourg, Ontario, Canada. All production facilities produce structural composite products. On November 5, 2020, the Company announced it will close the manufacturing facility located in Batavia, Ohio and completed the closure in the fourth quarter of 2021.

Basis of Presentation

12 Months Ended

Dec. 31, 2021

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Basis of PresentationCore Molding Technologies and its subsidiaries operate in the engineered materials market as one operating segment as a molder of thermoplastic and thermoset structural products. During the year ended December 31, 2021 the Company's operating segment consisted of one component reporting unit, which changed from two component reporting units in prior periods. The Company produces and sells molded products for varied markets, including medium and heavy-duty trucks, automobiles, power sports, construction and agriculture, building products and other industrial markets. The Company offers customers a wide range of manufacturing processes to fit various program volume and investment requirements. These processes include compression molding of sheet molding compound ("SMC"), resin transfer molding ("RTM"), liquid molding of dicyclopentadiene ("DCPD"), spray-up and hand-lay-up, direct long-fiber thermoplastics ("D-LFT") and structural foam and structural web injection molding ("SIM"). Core Molding Technologies has its headquarters in Columbus, Ohio, and operates seven production facilities in Columbus and Batavia, Ohio; Gaffney, South Carolina; Winona, Minnesota; Matamoros and Escobedo, Mexico; and Cobourg, Ontario, Canada. All production facilities produce structural composite products. On November 5, 2020, the Company announced it will close the manufacturing facility located in Batavia, Ohio and completed the closure in the fourth quarter of 2021.