Losses Associated With Plant Shutdowns, Asset Impairments And Restructurings, Unusual Items, Gains From Sale Of Assets And Other Items - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019
Restructuring and Related Activities [Abstract]
Losses Associated With Plant Shutdowns, Asset Impairments And Restructurings, Unusual Items, Gains From Sale Of Assets And Other Items	In connection with the anticipated customer product transitions in Surface Protection, the Company recognized severance and other employee-related expenses of $1.6 million in the fourth quarter of 2020. The Company recognizes termination benefits that are covered by a contract or an ongoing benefit arrangement when it is probable that employees will be entitled to benefits and the amount can be reasonably estimated. Other accrued expenses and losses related to asset impairments and costs associated with exit and disposal activities for continuing operations were not material for the years ended December 31, 2020, 2019 and 2018, respectively.
Accrued Severance Liability	$ 1,894	$ 1,180

Losses Associated With Plant Shutdowns, Asset Impairments And Restructurings, Unusual Items, Gains From Sale Of Assets And Other Items - USD ($)
$ in Thousands

12 Months Ended

Dec. 31, 2020

Dec. 31, 2019

Restructuring and Related Activities [Abstract]

Losses Associated With Plant Shutdowns, Asset Impairments And Restructurings, Unusual Items, Gains From Sale Of Assets And Other Items

In connection with the anticipated customer product transitions in Surface Protection, the Company recognized severance and other employee-related expenses of $1.6 million in the fourth quarter of 2020. The Company recognizes termination benefits that are covered by a contract or an ongoing benefit arrangement when it is probable that employees will be entitled to benefits and the amount can be reasonably estimated. Other accrued expenses and losses related to asset impairments and costs associated with exit and disposal activities for continuing operations were not material for the years ended December 31, 2020, 2019 and 2018, respectively.

Accrued Severance Liability

$ 1,894

$ 1,180