Detail of Certain Balance Sheet Accounts - Other Liabilities and Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Other payables and accruals:
Employee related	$ 59,478	$ 52,145
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	Total other payables and accruals	Total other payables and accruals
Short-term operating lease liabilities	$ 20,123	$ 18,299
Interest payable	4,379	3,873
Capital project accruals	3,825	1,149
Customer related	12,935	10,484
Short-term deferred income	26,737	24,182
Income tax payable	40,657	26,367
Utilities payable	4,081	2,886
Property and other taxes	1,648	1,303
Other	22,064	26,676
Total other payables and accruals	195,927	167,364
Other long-term liabilities:
Pension and other postretirement benefits	92,151	133,634
Long-term tax liability	18,246	19,530
Other	15,679	15,402
Total other long-term liabilities	$ 126,076	$ 168,566