INCOME TAXES (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income before income taxes:
United States	$ 55,278	$ 73,492	$ 31,681
International	225,219	221,079	254,620
Income before Income Taxes	280,497	294,571	286,301
Current:
U.S. Federal	24,045	19,749	14,023
State/Local	449	82	42
International	61,511	82,586	99,585
Total Current	86,005	102,417	113,650
Deferred:
U.S. Federal/State	(4,002)	1,605	(10,130)
International	(7,110)	(8,746)	(8,843)
Total Deferred	(11,112)	(7,141)	(18,973)
Total	$ 74,893	$ 95,276	$ 94,677
Statutory federal income tax rate (as a percent)	35.00%	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	$ 98,174	$ 103,100	$ 100,205
State income taxes (benefits), net of federal benefit (tax)	(980)	(1,254)	770
Investment incentives	(6,413)	(3,082)
Tax resolutions	(7,205)	2,375
Provision for distribution of current foreign earnings	3,494	2,031	695
Rate differential on earnings of foreign operations	(12,037)	(5,688)	(5,478)
Other items, net	(140)	(2,206)	(1,515)
Provision for Income Taxes	$ 74,893	$ 95,276	$ 94,677
Effective income tax rate (as a percent)	26.70%	32.30%	33.10%
Tax benefit related to reduction of allowances related to tax credits	$ 1,600	$ 1,100
Increase in tax provision due to transfer pricing issues in France		2,400
Income tax amount recognized under the US deemed dividend provisions	2,100	1,600
Income tax provision for planned cash movements in Europe	1,400	400
Deferred Tax Assets:
Pension liabilities	27,087	27,155
Stock compensation	18,943	20,170
Foreign tax credit carryforward	10,813	7,471
Net operating loss carryforwards	5,150	5,053
U.S. state tax credits	8,103	8,554
Vacation	4,783	4,167
Workers compensation	3,575	4,693
Other	12,651	6,503
Total gross deferred tax assets	91,105	83,766
Less valuation allowance	(4,070)	(6,125)
Net deferred tax assets	87,035	77,641
Deferred Tax Liabilities:
Depreciation, amortization and leases	39,189	47,154
Acquisition related intangibles	30,417	15,720
Total gross deferred tax liabilities	69,606	62,874
Net deferred tax assets / (liabilities)	17,429	14,767
Tax-effected net operating loss carryforwards not subject to expiration	4,700
Tax-effected net operating loss subject to expiration	400
France
Reconciliation of actual income tax provision and tax provision computed by applying statutory federal income tax rate
Increase in tax provision due to tax law changes in foreign nations		$ (3,100)
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 and Italy
Reconciliation of actual income tax provision and tax provision computed by applying statutory federal income tax rate
Increase in tax provision due to tax law changes in foreign nations	$ (6,400)
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