INCOME TAXES (Details) - USD ($) $ in Thousands		12 Months Ended
	Jan. 01, 2018	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Recognized net tax charge as a result of U.S. Tax Reform			$ 24,700
Recognized charge representing provisional estimate of one-time transition tax			31,600
Estimate of deferred income tax benefit related to corporate rate change			(6,800)
Income before income taxes:
United States		$ 34,404	36,139	$ 55,278
International		231,616	258,686	225,219
Income before Income Taxes		266,020	294,825	280,497
Current:
U.S. Federal		10,273	(342)	24,045
State/Local		877	230	449
International		83,456	72,670	61,511
Total Current		94,606	72,558	86,005
Deferred:
U.S. Federal/State		(17,019)	2,570	(4,002)
International		(6,333)	(332)	(7,110)
Total Deferred		(23,352)	2,238	(11,112)
Total		$ 71,254	$ 74,796	$ 74,893
Statutory federal income tax rate (as a percent)	21.00%	21.00%	35.00%	35.00%
Reconciliation of actual income tax provision and tax provision computed by applying statutory federal income tax rate
Income tax at statutory rate		$ 55,864	$ 103,189	$ 98,174
State income taxes (benefits), net of federal benefit (tax)		(1,311)	(594)	(980)
Investment incentives		(1,900)	(1,900)	(6,413)
Tax resolutions		(3,400)	(5,188)	(7,205)
Excess tax benefits from equity compensation		(10,800)	(10,383)
Deferred benefits from tax rate changes		(2,800)	(5,055)
U.S. GILTI and BEAT		5,625
U.S. tax reform - transition tax		(2,570)	31,575
Results of forward contract		0	(23,883)
Rate differential on earnings of foreign operations		29,336	(17,318)	(12,037)
Other items, net		3,210	4,353	3,354
Total		$ 71,254	$ 74,796	$ 74,893
Effective income tax rate (as a percent)		26.80%	25.40%	26.70%
Tax benefit related to reduction of allowances related to tax credits				$ 1,600
Liability for distributions in Europe that will occur early in 2019		$ 2,200
Deferred Tax Assets:
Net operating loss carryforwards		22,462	$ 10,803
Pension liabilities		15,405	19,393
Stock compensation		10,130	9,101
U.S. federal tax credits		12,045	8,320
U.S. state tax credits		10,186	9,384
Vacation and bonus		6,891	4,748
Research and development		6,945
Inventory		6,038	3,052
Workers compensation		3,373	4,534
Other		13,985	9,698
Total gross deferred tax assets		107,460	79,033
Less valuation allowance		(11,189)	(5,414)
Net deferred tax assets		96,271	73,619
Deferred Tax Liabilities:
Depreciation, amortization and leases		33,174	25,062
Acquisition related intangibles		59,004	27,866
Other		10,351	8,090
Total gross deferred tax liabilities		102,529	61,018
Net deferred tax assets			12,601
Net deferred tax liabilities		(6,258)
Increase (decrease) in valuation allowance		5,700
Tax-effected net operating loss carryforwards not subject to expiration		18,400
Tax-effected net operating loss subject to expiration		4,000
Amount of net operating losses and state tax credit carryforwards subject to expiration in the next fiscal year		900
Foreign Tax Authority | Minimum
Deferred Tax Liabilities:
Estimated additional tax payable on previously unremitted earnings		20,000
Foreign Tax Authority | Maximum
Deferred Tax Liabilities:
Estimated additional tax payable on previously unremitted earnings		$ 30,000
Internal Revenue Service (IRS)
Reconciliation of actual income tax provision and tax provision computed by applying statutory federal income tax rate
Deferred benefits from tax rate changes			(6,800)
France
Reconciliation of actual income tax provision and tax provision computed by applying statutory federal income tax rate
Tax resolutions			(2,000)
Tax settlements attributable to dividends previously taxed in foreign nations				(5,000)
Income tax benefit attributable to reduction in foreign corporate income tax rate				$ 4,700
Corporate income tax rate				34.43%	38.00%
France, Italy, and Germany
Reconciliation of actual income tax provision and tax provision computed by applying statutory federal income tax rate
Tax settlements attributable to resolution of foreign tax issues				$ (2,200)
Germany
Reconciliation of actual income tax provision and tax provision computed by applying statutory federal income tax rate
Income tax benefit attributable to reduction in foreign corporate income tax rate				2,000
SWITZERLAND
Reconciliation of actual income tax provision and tax provision computed by applying statutory federal income tax rate
Income tax benefit attributable to reduction in foreign corporate income tax rate				2,200
CHINA
Reconciliation of actual income tax provision and tax provision computed by applying statutory federal income tax rate
Income tax benefit attributable to reduction in foreign corporate income tax rate				$ 2,200
France and Argentina
Reconciliation of actual income tax provision and tax provision computed by applying statutory federal income tax rate
Deferred benefits from tax rate changes			1,700
Europe
Reconciliation of actual income tax provision and tax provision computed by applying statutory federal income tax rate
Tax resolutions			$ (3,200)