EQUITY (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2016		Jun. 30, 2015		Jun. 30, 2016		Jun. 30, 2015		Mar. 31, 2016	Dec. 31, 2015	Mar. 31, 2015	Dec. 31, 2014
Non-controlling interests	$ 804				$ 804					$ 861
Stockholders' Equity Attributable to Parent	$ 791,610				$ 791,610					931,587
Stock Repurchase Program, Number of Shares Authorized to be Repurchased	55,000,000				55,000,000
Treasury Stock, Shares, Acquired	1,670,289				3,615,694
Changes in equity
Balance at the beginning of the period					$ 932,448
Comprehensive income:
Net income including non-controlling interests	$ 31,309		$ 70,876		84,933		$ 139,194
Other comprehensive income (loss)	(17,025)		18,142		9,678		(33,772)
Total comprehensive income (loss)	$ 14,284		$ 89,018		94,611		$ 105,422
Cash dividends declared - $0.64 per share for the six months ended June 30, 2016					$ (43,792)
Cash dividends declared per share (in dollars per share)	$ 0.32		$ 0.29		$ 0.64		$ 0.58
Issuance of shares under benefit plans					$ 12,080
Purchase of shares for treasury					(202,933)
Balance at the end of the period	$ 792,414				792,414
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Accumulated Other Comprehensive Income (Loss), Net of Tax	(286,554)		$ (321,880)		(286,554)		$ (321,880)		$ (269,579)	(296,267)	$ (339,995)	$ (288,622)
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	(22,124)		14,230		3,789		(40,459)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	5,149		3,885		5,924		7,201
Net Current-Period Other Comprehensive Income (Loss), Net of Tax	(16,975)		18,115		9,713		(33,258)
Net sales	592,418		664,740		1,143,140		1,322,640
Cost of goods sold	389,491		438,959		751,111		876,469
Income Tax Expense (Benefit)	$ 14,449		23,558		$ 34,007		47,947
Stock Repurchase Program, Remaining Number of Shares Authorized to be Repurchased	11,132,227				11,132,227
Shareholders' Equity
Comprehensive income:
Net income including non-controlling interests					$ 84,955
Other comprehensive income (loss)					9,713
Total comprehensive income (loss)					94,668
Cash dividends declared - $0.64 per share for the six months ended June 30, 2016					(43,792)
Issuance of shares under benefit plans					12,080
Purchase of shares for treasury					(202,933)
Noncontrolling Interests
Comprehensive income:
Net income including non-controlling interests					(22)
Other comprehensive income (loss)					(35)
Total comprehensive income (loss)					(57)
Cash dividends declared - $0.64 per share for the six months ended June 30, 2016					0
Issuance of shares under benefit plans					0
Purchase of shares for treasury					0
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Accumulated Other Comprehensive Income (Loss), Net of Tax	$ 739		512		739		512		1,384	548	1,091	(9)
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	(339)		(893)		1,360		429
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	(306)	[1]	314	[1]	(1,169)	[2]	92	[2]
Net Current-Period Other Comprehensive Income (Loss), Net of Tax	(645)		(579)		191		521
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member] | Reclassification out of Accumulated Other Comprehensive Income | Sales
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Net sales	(152)		8		(939)		(521)
Income Tax Expense (Benefit)	(69)		(75)		(347)		(324)
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member] | Reclassification out of Accumulated Other Comprehensive Income | Cost of goods sold
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Cost of goods sold	(154)		306		(230)		613
Income Tax Expense (Benefit)	(16)		205		6		407
Accumulated Defined Benefit Plans Adjustment [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Accumulated Other Comprehensive Income (Loss), Net of Tax	(95,541)		(190,784)		(95,541)		(190,784)		(98,158)	(99,776)	(194,355)	(197,893)
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	5		0		(15)		0
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	2,612	[3]	3,571	[3]	4,250	[4]	7,109	[4]
Net Current-Period Other Comprehensive Income (Loss), Net of Tax	2,617		3,571		4,235		7,109
Accumulated Defined Benefit Plans Adjustment [Member] | Reclassification out of Accumulated Other Comprehensive Income
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Income Tax Expense (Benefit)	1,132		1,975		2,043		4,370
Accumulated Translation Adjustment [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Accumulated Other Comprehensive Income (Loss), Net of Tax	(191,752)		(131,608)		(191,752)		(131,608)		$ (172,805)	$ (197,039)	$ (146,731)	$ (90,720)
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	(21,790)	[5]	15,123	[5]	2,444	[6]	(40,888)	[6]
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	2,843	[7]	0		2,843	[8]	0
Net Current-Period Other Comprehensive Income (Loss), Net of Tax	(18,947)		15,123		5,287		(40,888)
Accumulated Translation Adjustment [Member] | Reclassification out of Accumulated Other Comprehensive Income
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Other Comprehensive (Income) Loss, Net of Tax, Portion Attributable to Noncontrolling Interest	$ (51)		$ 27		$ (36)		$ (514)

[1] During the 2016 period, this AOCI reclassification is a component of Net sales of $(152) (net of tax of $(69)) and Cost of goods sold of $(154) (net of tax of $(16)); during the 2015 period, the reclassification is a component of Net sales of $8 (net of tax of $(75)) and Cost of goods sold of $306 (net of tax of $205). (See Note 14 - Derivatives for additional details.)

[2] During the 2016 period, this AOCI reclassification is a component of Net sales of $(939) (net of tax of $(347)) and Cost of goods sold of $(230) (net of tax of $6); during the 2015 period, the reclassification is a component of Net sales of $(521) (net of tax of $(324)) and Cost of goods sold of $613 (net of tax of $407). (See Note 14 - Derivatives for additional details.)

[3] This AOCI component is included in the computation of net periodic pension costs (net of tax of $1,132 and $1,975 during the three months ended June 30, 2016 and 2015, respectively). (See Note 12 - Retirement and Postretirement Benefit Plans for additional details.)

[4] This AOCI component is included in the computation of net periodic pension costs (net of tax of $2,043 and $4,370 during the six months ended June 30, 2016 and 2015, respectively). (See Note 12 - Retirement and Postretirement Benefit Plans for additional details.)

[5] The Other comprehensive income (loss) before reclassifications excludes $(51) and $27 attributable to Non-controlling interests in the three months ended June 30, 2016 and 2015, respectively.

[6] The Other comprehensive income (loss) before reclassifications excludes $(36) and $(514) attributable to Non-controlling interests in the six months ended June 30, 2016 and 2015, respectively.

[7] The reclassification from AOCI reflects foreign currency translation losses recognized due to the Company's deconsolidation of its Venezuelan subsidiary. (See Note 1 - Significant Accounting Policies for additional details.)

[8] The reclassification from AOCI reflects foreign currency translation losses recognized due to the Company's deconsolidation of its Venezuelan subsidiary. (See Note 1 - Significant Accounting Policies for additional details.)