CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 293,109	$ 287,066	$ 247,503
Non-controlling interests in subsidiaries' (loss) earnings	(26)	(73)	(28)
Net income including non-controlling interests	293,083	286,993	247,475
Adjustments to reconcile Net income including non-controlling interests to Net cash provided by operating activities:
Rationalization and asset impairment net charges (gains) (Notes 5 and 7)	3,500	(5,978)	1,441
Bargain purchase gain (Note 4)	0	0	(49,650)
Net impact of U.S. Tax Act (Note 14)	0	399	28,616
Depreciation and amortization	81,487	72,346	68,115
Equity earnings in affiliates, net	(1,427)	(3,034)	(337)
Deferred income taxes (Note 14)	13,019	1,490	4,058
Stock-based compensation (Note 10)	16,624	18,554	12,698
Pension expense, settlements and curtailments	261	3,068	2,517
Business Combination, Step Acquisition, Equity Interest in Acquiree, Remeasurement Gain (Loss), Net	(7,601)	0	0
Other, net	(8,416)	(11,002)	1,402
Changes in operating assets and liabilities, net of effects from acquisitions:
Decrease (increase) in accounts receivable	50,394	(4,061)	(16,811)
(Increase) decrease in inventories	(12,023)	(23,904)	19,448
Decrease (increase) in other current assets	14,269	1,324	(8,143)
(Decrease) increase in trade accounts payable	(8,339)	3,636	17,871
Decrease in other current liabilities	(31,223)	(13,657)	(13)
Net change in other assets and liabilities	(423)	2,978	6,158
Net Cash Provided by (Used in) Operating Activities	403,185	329,152	334,845
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures	(69,615)	(71,246)	(61,656)
Acquisition of businesses, net of cash acquired (Note 4)	(134,717)	(101,792)	(72,468)
Proceeds from sale of property, plant, and equipment	9,509	16,755	2,301
Purchase of marketable securities	0	(268,335)	(205,584)
Proceeds from marketable securities	0	447,459	65,380
Other investing activities	2,000	(2,000)	0
Net Cash Provided by (Used in) Investing Activities	(192,823)	20,841	(272,027)
CASH FLOWS FROM FINANCING ACTIVITIES
Amounts due banks, net	24,429	(835)	(491)
Proceeds from long-term borrowings	0	0	34
Payments on long-term borrowings	(107)	(107)	(39)
Proceeds from exercise of stock options	14,347	4,690	16,627
Purchase of shares for treasury	(292,693)	(201,650)	(43,164)
Cash dividends paid to shareholders	(117,920)	(102,058)	(92,452)
Other Financing Activities	0	(2,170)	(15,552)
Net Cash Provided by (Used in) Financing Activities	(371,944)	(302,130)	(135,037)
Effect of exchange rate changes on cash and cash equivalents	2,296	(15,715)	19,741
(DECREASE) INCREASE IN CASH AND CASH EQUIVALENTS	(159,286)	32,148	(52,478)
Cash and cash equivalents at beginning of year	358,849	326,701	379,179
CASH AND CASH EQUIVALENTS AT END OF YEAR	$ 199,563	$ 358,849	$ 326,701