CONSOLIDATED STATEMENTS OF CASH FLOWS $ in Thousands	12 Months Ended
	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 287,066	$ 247,503	$ 198,399
Non-controlling interests in subsidiaries' (loss) earnings	(73)	(28)	(26)
Net income including non-controlling interests	286,993	247,475	198,373
Adjustments to reconcile Net income including non-controlling interests to Net cash provided by operating activities:
Rationalization and asset impairment net (gains) charges (Notes 5 and 7)	(5,978)	1,441	0
Loss on deconsolidation of Venezuelan subsidiary	0	0	34,348
Bargain purchase gain (Note 4)	0	(49,650)	0
Net impact of U.S. Tax Act (Note 14)	399	28,616	0
Depreciation and amortization	72,346	68,115	65,073
Equity earnings in affiliates, net	(3,034)	(337)	(261)
Deferred income taxes (Note 14)	1,490	4,058	(9,805)
Stock-based compensation (Note 10)	18,554	12,698	10,332
Pension expense, settlements and curtailments	3,068	2,517	13,988
Other, net	(11,002)	1,402	(26,560)
Changes in operating assets and liabilities, net of effects from acquisitions:
Increase in accounts receivable	(4,061)	(16,811)	(12,314)
(Increase) decrease in inventories	(23,904)	19,448	14,601
Decrease (increase) in other current assets	1,324	(8,143)	1,532
Increase in trade accounts payable	3,636	17,871	29,627
Decrease in other current liabilities	(13,657)	(13)	(9,286)
Net change in other assets and liabilities	2,978	6,158	2,909
NET CASH PROVIDED BY OPERATING ACTIVITIES	329,152	334,845	312,557
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures	(71,246)	(61,656)	(49,877)
Acquisition of businesses, net of cash acquired (Note 4)	(101,792)	(72,468)	(71,567)
Proceeds from sale of property, plant, and equipment	16,755	2,301	1,127
Purchase of marketable securities	(268,335)	(205,584)	(38,920)
Proceeds from marketable securities	447,459	65,380	0
Other investing activities	(2,000)	0	(709)
NET CASH PROVIDED BY (USED BY) INVESTING ACTIVITIES	20,841	(272,027)	(159,946)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from short-term borrowings	0	0	1,892
Payments on short-term borrowings	0	0	(1,822)
Amounts due banks, net	(835)	(491)	1,469
Proceeds from long-term borrowings	0	34	350,261
Payments on long-term borrowings	(107)	(39)	(481)
Proceeds from exercise of stock options	4,690	16,627	25,049
Purchase of shares for treasury	(201,650)	(43,164)	(342,003)
Cash dividends paid to shareholders	(102,058)	(92,452)	(87,330)
Other Financing Activities	(2,170)	(15,552)	(19,043)
NET CASH USED BY FINANCING ACTIVITIES	(302,130)	(135,037)	(72,008)
Effect of exchange rate changes on cash and cash equivalents	(15,715)	19,741	(5,607)
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	32,148	(52,478)	74,996
CASH AND CASH EQUIVALENTS AT END OF YEAR	358,849	326,701
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	$ 358,849	$ 326,701	$ 379,179