Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Cash Flows From Operating Activities
Net income	$ 136,319	$ 120,837
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	69,958	67,953
Deferred compensation	(13,038)	2,148
Realized and unrealized (gains) losses on long-term investments	8,073	(2,497)
Stock-based compensation	10,012	8,069
Deferred income taxes	(2,110)	(51,542)
Goodwill impairment (Note 18)	978
Other non-cash items	1,698	139
Changes in assets and liabilities:
Receivables, net	(82,512)	(96,830)
Inventories	(100,101)	(63,769)
Other current assets	(5,030)	(356)
Accounts payable and accrued liabilities	42,625	39,222
Pension liabilities	(1,685)	(1,434)
Environmental and legal liabilities	10,264	(522)
Deferred revenues	(524)	(16)
Net Cash Provided By Operating Activities	74,927	21,402
Cash Flows From Investing Activities
Expenditures for property, plant and equipment	(205,337)	(119,541)
Asset acquisition (Note 17)		(3,503)
Business acquisition, net of cash acquired (Note 17)	(9,693)	(184,473)
Other, net	3,156	1,480
Net Cash Used In Investing Activities	(211,874)	(306,037)
Cash Flows From Financing Activities
Revolving debt and bank overdrafts, net (Note 14)	155,141	9,799
Other debt borrowings (Note 14)	75,000	100,000
Other debt repayments	(28,571)	(28,572)
Dividends paid	(22,458)	(20,572)
Company stock repurchased	(22,257)	(16,969)
Stock option exercises	353	1,087
Other, net	(2,650)	(1,801)
Net Cash Provided By Financing Activities	154,558	42,972
Effect of Exchange Rate Changes on Cash	(11,111)	(3,007)
Net Increase (Decrease) in Cash and Cash Equivalents	6,500	(244,670)
Cash and Cash Equivalents at Beginning of Period	159,186	349,938
Cash and Cash Equivalents at End of Period	165,686	105,268
Supplemental Cash Flow Information
Cash payments of income taxes, net of refunds/payments	23,595	85,271
Cash payments of interest	$ 11,297	$ 6,885