CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Cash Flows from Operating Activities:
Net income	$ 193,689	$ 154,091
Adjustments to reconcile net income to net cash provided by operations:
Depreciation	124,787	113,555
Amortization	19,787	9,578
Stock based compensation	18,075	14,829
Provision for (recovery of) doubtful accounts	930	190
(Gain) loss on disposition of fixed assets	303	(979)
Deferred income taxes	5,948	(5,414)
Defined benefit plan expense	11,517	14,466
Equity in results of affiliates	(152)	130
Changes in balance sheet items, excluding effects from acquisitions and foreign currency adjustments:
Accounts and other receivables	724	(72,620)
Inventories	(16,025)	(41,183)
Prepaid and other current assets	(1,721)	(807)
Accounts payable and accrued liabilities	15,047	55,921
Income taxes payable	6,729	(7,481)
Retirement and deferred compensation plan liabilities	(935)	(21,534)
Other changes, net	1,678	(3,157)
Net Cash Provided by Operations	380,381	209,585
Cash Flows from Investing Activities:
Capital expenditures	(186,841)	(145,321)
Proceeds from sale of property, plant and equipment	3,658	4,056
Insurance proceeds		10,631
Acquisition of business, net of cash acquired	(49,062)	(527,916)
Acquisition of intangible assets	(4,621)	(346)
Investment in equity securities	(3,530)	(10,000)
Proceeds from sale of investment in equity securities	16,487
Notes receivable, net	(89)	216
Net Cash Used by Investing Activities	(223,998)	(668,680)
Cash Flows from Financing Activities:
Proceeds from notes payable	36,893	18,003
Repayments of notes payable	(41,145)	(6,395)
Proceeds and repayments of short term credit facility, net	(47,253)	139,384
Proceeds from long-term obligations	10,524	10,092
Repayments of long-term obligations	(64,924)	(67,026)
Dividends paid	(67,195)	(60,989)
Proceeds from stock option exercises	81,815	78,896
Purchase of treasury stock	(54,873)	(3,905)
Common stock repurchased and retired		(57,787)
Net Cash Provided (Used) by Financing Activities	(146,158)	50,273
Effect of Exchange Rate Changes on Cash	(6,471)	(7,436)
Net Increase (Decrease) in Cash and Equivalents and Restricted Cash	3,754	(416,258)
Cash and Equivalents and Restricted Cash at Beginning of Period	266,823	712,640
Cash and Equivalents and Restricted Cash at End of Period	$ 270,577	$ 296,382