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Other Deferred Items and Liabilities - Summary of Other Deferred Items and Liabilities (Details) - USD ($)
$ in Thousands
Jun. 30, 2021
Dec. 31, 2020
Continuing operations:    
Foreign deferred tax liability $ 23,668 $ 21,336
Multi-employer pension plan withdrawal liability 14,471 15,864
Self-insured liability 7,019 6,662
Self-insured excess liability 6,358 6,358
Accrued compensation 5,811 5,821
Accrued restructuring 2,586 2,751
Other 1,996 1,479
Total continuing operations 61,909 60,271
Discontinued operations:    
Environmental remediation liabilities 2,192 2,179
Self-insured liability 1,720 1,639
Other 251 539
Total discontinued operations 4,163 4,357
Total other deferred items and liabilities $ 66,072 $ 64,628