Other Deferred Items and Liabilities - Summary of Other Deferred Items and Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Continuing operations:
Foreign deferred tax liability	$ 29,482	$ 21,336
Multi-employer pension plan withdrawal liability	14,366	15,864
Self-insured liability	7,754	6,662
Self-insured excess liability	6,358	6,358
Accrued compensation	5,656	5,821
Accrued restructuring	2,640	2,751
Other	1,590	1,479
Total continuing operations	67,846	60,271
Discontinued operations:
Environmental remediation liabilities	2,191	2,179
Self-insured liability	1,619	1,639
Other	250	539
Total discontinued operations	4,060	4,357
Total other deferred items and liabilities	$ 71,906	$ 64,628