Other Deferred Items and Liabilities - Summary of Other Deferred Items and Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Continuing operations:
Self-insured liability	$ 13,130	$ 12,918
Self-insured excess liability	10,442	10,442
Foreign deferred tax liability	8,590	8,267
Accrued compensation	6,237	9,740
Deferred rent	3,654	3,855
Accrued restructuring	1,790	1,827
Other	1,303	1,305
Total continuing operations	45,146	48,354
Discontinued operations:
Self-insured liability	2,358	2,557
Environmental remediation liabilities	1,616	1,728
Other	237	219
Total discontinued operations	4,211	4,504
Total other deferred items and liabilities	$ 49,357	$ 52,858